Bjørn E. Christensen

About

Areas of speciality/Fields of responsibilityBiopolymers

Publications

2022

Ballance, Simon; Lu, Yudong; Zobel, Hanne; Rieder, Anne; Knutsen, Svein Halvor; Dinu, Vlad T.; Christensen, Bjørn E.; Ulset, Ann-Sissel Teialeret; Schmid, Marius; Maina, Ndegwa; Potthast, Antje; Schiehser, Sonja; Ellis, Peter R.; Harding, Stephen Ernest. (2022) Inter-laboratory analysis of cereal beta-glucan extracts of nutritional importance: An evaluation of different methods for determining weight-average molecular weight and molecular weight distribution. Food Hydrocolloids. volum 127.
Academic article
Münster, Lukáš; Capáková, Zdenka; Humpolíček, Petr; Kuřitka, Ivo; Christensen, Bjørn E.; Vícha, Jan. (2022) Dicarboxylated hyaluronate: Synthesis of a new, highly functionalized and biocompatible derivative. Carbohydrate Polymers. volum 292.
Academic article
Yoshiba, Kazuto; Yasuda, Yota; Christensen, Bjørn E.; Kondo, Chisaki; Miyazaki, Yuji; Nakano, Motohiro. (2022) Association with Imidazole in the Cooperative Order–Disorder Transition in Aqueous Solution of Schizophyllan. Langmuir. volum 38.
Academic article

2021

Mo, Ingrid Vikøren; Schatz, Christophe; Christensen, Bjørn E.. (2021) Functionalisation of the non-reducing end of chitin by selective periodate oxidation: A new approach to form complex block polysaccharides and water-soluble chitin-based block polymers. Carbohydrate Polymers. volum 267.
Academic article
Solberg, Amalie; Mo, Ingrid Vikøren; Aachmann, Finn Lillelund; Schatz, Christophe; Christensen, Bjørn E.. (2021) Alginate-based diblock polymers: preparation, characterization and Ca-induced self-assembly. Polymer Chemistry. volum 12 (38).
Academic article
Solberg, Amalie; Mo, Ingrid Vikøren; Omtvedt, Line Aanerud; Strand, Berit Løkensgard; Aachmann, Finn Lillelund; Schatz, Christophe; Christensen, Bjørn E.. (2021) Carbohydr Polym Special Issue Invited contribution: Click chemistry for block polysaccharides with dihydrazide and dioxyamine linkers - A review. Carbohydrate Polymers.
Scientific translation/review
Tafjord, Joakim; Rytter, Erling; Holmen, Anders; Myrstad, Rune; Svenum, Ingeborg-Helene; Christensen, Bjørn E.; Yang, Jia. (2021) Transition-Metal Nanoparticle Catalysts Anchored on Carbon Supports via Short-Chain Alginate Linkers. ACS Applied Nano Materials. volum 4 (4).
Academic article

2020

Christensen, Bjørn E.. (2020) Recent trends in carbohydrate chemistry. Synthesis, structure and functions of carbohydrates Vol. 1-2. Elsevier. 2020. ISBN 978-0-12-817467-8.
Scientific anthology
Dalheim, Marianne Øksnes; Christensen, Bjørn E.; Comesse, Sébastien; Renou, Frédéric. (2020) Modification of xanthan in the ordered and disordered states. Recent trends in carbohydrate chemistry. Synthesis, structure and functions of carbohydrates Vol. 1-2.
Academic chapter/article
Mo, Ingrid Vikøren; Dalheim, Marianne Øksnes; Aachmann, Finn Lillelund; Schatz, Christophe; Christensen, Bjørn E.. (2020) 2,5-Anhydro-d-Mannose End-Functionalized Chitin Oligomers Activated by Dioxyamines or Dihydrazides as Precursors of Diblock Oligosaccharides. Biomacromolecules. volum 21 (7).
Academic article
Mo, Ingrid Vikøren; Feng, Yiming; Dalheim, Marianne Øksnes; Solberg, Amalie; Aachmann, Finn Lillelund; Schatz, Christophe; Christensen, Bjørn E.. (2020) Activation of enzymatically produced chitooligosaccharides by dioxyamines and dihydrazides. Carbohydrate Polymers. volum 232.
Academic article

2019

Kucko, Nathan W.; Li, Wenliang; Martinez, Marcela A. Garcia; Rehman, Ihtesham ur; Ulset, Ann-Sissel Teialeret; Christensen, Bjørn E.; Leeuwenburgh, Sander C.G.; Herber, Ralf-Peter. (2019) Sterilization effects on the handling and degradation properties of calcium phosphate cements containing poly (D,L-lactic-co-glycolic acid) porogens and carboxymethyl cellulose. Journal of Biomedical Materials Research. Part B - Applied biomaterials. volum 107 (7).
Academic article
Stender, Emil GP; Andersen, Christian Dybdahl; Fredslund, Folmer; Holck, Jesper; Solberg, Amalie; Teze, David; Peters, Gunther HJ; Christensen, Bjørn E.; Aachmann, Finn Lillelund; Welner, Ditte H; Svensson, Birte. (2019) Structural and functional aspects of mannuronic acid–specific PL6 alginate lyase from the human gut microbe Bacteroides cellulosilyticus. Journal of Biological Chemistry. volum 294 (47).
Academic article
Tomofuji, Yu; Yoshiba, Kazuto; Christensen, Bjørn E.; Terao, Ken. (2019) Single-chain conformation of carboxylated schizophyllan, a triple helical polysaccharide, in dilute alkaline aqueous solution. Polymer. volum 185.
Academic article
Yoshiba, Kazuto; Saheki, Toshihiko; Christensen, Bjørn E.; Dobashi, Toshiaki. (2019) Conformation and cooperative order-disorder transition in aqueous solutions of β-1,3-d-glucan with different degree of branching varied by the Smith degradation. Biopolymers. volum 110 (9).
Academic article

2018

Christensen, Bjørn E.; Strand, Sabina P.; Basset, Coraline; Kristiansen, Kåre Andre; Ulset, Ann-Sissel Teialeret; Ballance, Simon; Granum, Per Einar. (2018) Macromolecular acidic coating increases shelf life by inhibition of bacterial growth. International journal of food microbiology. volum 285.
Academic article
Yoshiba, Kazuto; Dobashi, Toshiaki; Ulset, Ann-Sissel Teialeret; Christensen, Bjørn E.. (2018) Cooperative Order−Disorder Transition of Carboxylated Schizophyllan in Water−Dimethylsulfoxide Mixtures. Journal of Physical Chemistry B. volum 122 (25).
Academic article

2017

Dalheim, Marianne Øksnes; Ulset, Ann-Sissel Teialeret; Jenssen, Ina Beate; Christensen, Bjørn E.. (2017) Degradation kinetics of peptide-coupled alginates prepared via the periodate oxidation reductive amination route. Carbohydrate Polymers. volum 157.
Academic article
Wold, Christian Winther; Kjeldsen, Christian; Corthay, Alexandre; Rise, Frode; Christensen, Bjørn E.; Duus, Jens Øllgaard; Inngjerdingen, Kari Tvete. (2017) Structural characterization of bioactive heteropolysaccharides from the medicinal fungus Inonotus obliquus (Chaga). Carbohydrate Polymers. volum 185.
Academic article
Yoshiba, Kazuto; Okamoto, Satoka; Dobashi, Toshiaki; Oku, Hiroyuki; Christensen, Bjørn E.; Sato, Takahiro. (2017) Effects of carboxylation of the side chains on the order-disorder transition in aqueous solution of schizophyllan, a triple helical polysaccharide. Carbohydrate Polymers. volum 168.
Academic article

2016

Dalheim, Marianne Øksnes; Arnfinnsdottir, Nina Bjørk; Widmalm, Göran; Christensen, Bjørn E.. (2016) The size and shape of three water-soluble, non-ionic polysaccharides produced by lactic acid bacteria: A comparative study. Carbohydrate Polymers. volum 142.
Academic article
Dalheim, Marianne Øksnes; Vanacker, Julie; Najmi, Maryam A.; Aachmann, Finn Lillelund; Strand, Berit Løkensgard; Christensen, Bjørn E.. (2016) Efficient functionalization of alginate biomaterials. Biomaterials. volum 80.
Academic article

2015

Rieder, Anne; Knutsen, Svein Halvor; Ulset, Ann-Sissel Teialeret; Christensen, Bjørn E.; Andersson, Roger; Mikkelson, Atte; Tuomainen, Päivi; Maina, Ndegwa; Ballance, Simon. (2015) Inter-laboratory evaluation of SEC-post-column calcofluor for determination of the weight-average molar mass of cereal β-glucan. Carbohydrate Polymers. volum 124.
Academic article
Yoshiba, Kazuto; Sato, Takahiro; Osumi, Takaaki; Ulset, Ann-Sissel Teialeret; Christensen, Bjørn E.. (2015) Conformation of carboxylated schizophyllan in aqueous solution. Carbohydrate Polymers. volum 134.
Academic article

2014

Andersen, Therese; Markussen, Christine; Dornish, John Michael; Heier-Baardson, Helene; Melvik, Jan Egil; Alsberg, Eben; Christensen, Bjørn E.. (2014) In situ gelation for cell immobilization and culture in alginate foam scaffolds. Tissue Engineering Part A. volum 20 (3-4).
Academic article
Andersen, Therese; Melvik, Jan Egil; Gåserød, Olav; Alsberg, Eben; Christensen, Bjørn E.. (2014) Ionically gelled alginate foams: Physical properties controlled by type, amount and source of gelling ions. Carbohydrate Polymers. volum 99.
Academic article
Austarheim, Ingvild; Christensen, Bjørn E.; Aas, Hoai Thi Nguyen; Thöle, Christian; Diallo, Drissa; Paulsen, Berit Smestad. (2014) Chemical characterization and complement fixation of pectins from Cola cordifolia leaves. Carbohydrate Polymers. volum 102 (1).
Academic article
Cardoso, DA; Ulset, Ann-Sissel Teialeret; Bender, Johan; Jansen, John A; Christensen, Bjørn E.; Leeuwenburgh, Sander. (2014) Effects of physical and chemical treatments on the molecular weight and degradation of alginate-hydroxyapatite composites. Macromolecular Bioscience. volum 14 (6).
Academic article
Courtade, Gaston; Christensen, Bjørn E.; Ulset, Ann-Sissel Teialeret. (2014) Video demonstration of Biopolymers lab exercises. NTNU. 2014.
Digital teaching aids
Ulset, Ann-Sissel Teialeret; Mori, Hideki; Dalheim, Marianne Øksnes; Hara, Masayuki; Christensen, Bjørn E.. (2014) Influence of amino acids, buffers, and pH on the γ-irradiation-induced degradation of alginates. Biomacromolecules. volum 15 (12).
Academic article

2013

Kelesoglu, Murside Kes; Christensen, Bjørn E.. (2013) Degradation of cellulosic insulation in power transformers: a SEC-MALLS study of artificially aged transformer papers. Cellulose. volum 20 (4).
Academic article
Kelesoglu, Murside Kes; Christensen, Bjørn Erik. (2013) A re-investigation of the Mark-Houwink-Sakurada parameters for cellulose in Cuen: A study based on size-exclusion chromatography combined with multi-angle light scattering and viscometry. Journal of Chromatography A. volum 1281.
Academic article
Kes, Murside; Christensen, Bjørn Erik; Moe, Størker T.. (2013) Ageing of Cellulosic Insulations in Transformer Oil. 2013. ISBN 978-82-471-4260-8. Doktoravhandlinger ved NTNU (80).
PhD thesis
Kristiansen, Kåre Andre; Dalheim, Marianne Øksnes; Christensen, Bjørn E.. (2013) Periodate oxidation and macromolecular compaction of hyaluronan. Pure and Applied Chemistry. volum 85 (9).
Academic article
Qin, Fen; Kelesoglu, Murside Kes; Christensen, Bjørn E.. (2013) A study of bioactive, branched (1→3)-b-d-glucans in dimethylacetamide/LiCl and dimethyl sulphoxide/LiCl using size-exclusion chromatography with multi-angle light scattering detection. Journal of Chromatography A. volum 1305.
Academic article
Qin, Fen; Sletmoen, Marit; Stokke, Bjørn Torger; Christensen, Bjørn Erik. (2013) Higher order structures of a bioactive, water-soluble (1→3)-b-d-glucan derived from Saccharomyces cerevisiae. Carbohydrate Polymers. volum 92 (2).
Academic article

2012

Andersen, Therese; Melvik, Jan Egil; Gåserød, Olav; Alsberg, Eben; Christensen, Bjørn Erik. (2012) Ionically Gelled Alginate Foams: Physical Properties Controlled by Operational and Macromolecular Parameters. Biomacromolecules. volum 13 (11).
Academic article
Andersen, Therese; Strand, Berit Løkensgard; Formo, Kjetil Ødegård; Alsberg, Eben; Christensen, Bjørn Erik. (2012) Alginates as biomaterials in tissue engineering. Carbohydrate Chemistry - Chemical and Biological Approaches.
Academic chapter/article
Austarheim, Ingvild; Christensen, Bjørn Erik; Hegna, Ida Kristin; Petersen, Bent O.; Duus, Jens O; Bye, Ragnar; Michaelsen, Terje Einar; Diallo, Drissa; Inngjerdingen, Marit; Paulsen, Berit Smestad. (2012) Chemical and biological characterization of pectin-like polysaccharides from the bark of the Malian medicinal tree Cola cordifolia. Carbohydrate Polymers. volum 89 (1).
Academic article
Ballance, Simon; Kristiansen, Kåre Andre; Skogaker, Nan E Tostrup; Tvedt, Kåre E; Christensen, Bjørn Erik. (2012) The localisation of pectin in Sphagnum moss leaves and its role in preservation. Carbohydrate Polymers. volum 87 (2).
Academic article
Qin, Fen; Aachmann, Finn Lillelund; Christensen, Bjørn Erik. (2012) Chain length distribution and aggregation of branched (1→3)-b-D-glucans from Saccharomyces cerevisae. Carbohydrate Polymers. volum 90 (2).
Academic article

2011

Kristiansen, Kåre Andre; Tomren, Henrik Berg; Christensen, Bjørn Erik. (2011) Periodate oxidized alginates: Depolymerization kinetics. Carbohydrate Polymers. volum 86 (4).
Academic article
Liland, Knut Brede; Kes, Murside; Ese, Marit-Helen; Lundgaard, Lars Esben; Christensen, Bjørn Erik. (2011) Study of Oxidation and Hydrolysis of Oil Impregnated Paper Insulation for Transformers using a Microcalorimeter. IEEE transactions on dielectrics and electrical insulation. volum 18 (6).
Academic article
Mellegård, Hilde; From, Cecilie; Christensen, Bjørn Erik; Granum, Per Einar. (2011) Inhibition of Bacillus cereus spore outgrowth and multiplication by chitosan. International journal of food microbiology. volum 149 (3).
Academic article
Mellegård, Hilde; Kovács, Ákos T.; Lindback, Toril; Christensen, Bjørn Erik; Kuipers, Oscar P.; Granum, Per Einar. (2011) Transcriptional responses of Bacillus cereus towards challenges with the polysaccharide chitosan. PLOS ONE. volum 6 (9).
Academic article
Mellegård, Hilde; Strand, Sabina P.; Christensen, Bjørn Erik; Granum, Per Einar; Hardy, Simon P.. (2011) Antibacterial activity of chemically defined chitosans: Influence of molecular weight, degree of acetylation and test organism. International journal of food microbiology. volum 148 (1).
Academic article
Suzuki, Shiho; Christensen, Bjørn Erik; Kitamura, Shinichi. (2011) Effect of mannuronate content and molecular weight of alginates on intestinal immunological activity through Peyer’s patch cells of C3H/HeJ mice. Carbohydrate Polymers. volum 83 (2).
Academic article
Tømmeraas, Kristoffer; Strand, Sabina P.; Christensen, Bjørn Erik; Smidsrød, Olav; Vårum, Kjell Morten. (2011) Preparation and characterization of branched chitosans. Carbohydrate Polymers. volum 83 (4).
Academic article

2010

Chytil, Martin; Strand, Sabina P.; Christensen, Bjørn Erik; Pekar, Miloslav. (2010) Calorimetric and light scattering study of interactions and macromolecular properties of native and hydrophobically modified hyaluronan. Carbohydrate Polymers. volum 81 (4).
Academic article
Hara, Masayuki; Koshimizu, Naoki; Yoshida, Mayumi; Haug, Ingvild; Ulset, Ann-Sissel Teialeret; Christensen, Bjørn Erik. (2010) Cross-Linking and Depolymerisation of gamma-Irradiated Fish Gelatin and Porcine Gelatin Studied by SEC-MALLS and SDS-PAGE: A Comparative Study. Journal of Biomaterials Science. Polymer Edition. volum 21 (6-7).
Academic article
Kristiansen, Kåre Andre; Potthast, Antje; Christensen, Bjørn Erik. (2010) Periodate oxidation of polysaccharides for modification of chemical and physical properties. Carbohydrate Research. volum 345 (10).
Academic article

2009

Ballance, Simon; Aarstad, Olav Andreas; Aachmann, Finn Lillelund; Skjåk-Bræk, Gudmund; Christensen, Bjørn Erik. (2009) Preparation of high purity monodisperse oligosaccharides derived from mannuronan by size-exclusion chromatography followed by semi-preparative high-performance anion-exchange chromatography with pulsed amperometric detection. Carbohydrate Research. volum 344.
Academic article
Kristiansen, Kåre Andre; Ballance, Simon; Potthast, A; Christensen, Bjørn Erik. (2009) An evaluation of tritium and fluorescence labelling combined with multi-detector SEC for the detection of carbonyl groups in polysaccharides. Carbohydrate Polymers. volum 76 (2).
Academic article
Kristiansen, Kåre Andre; Schirmer, Bjørn Christian; Aachmann, Finn Lillelund; Skjåk-Bræk, Gudmund; Draget, Kurt Ingar; Christensen, Bjørn Erik. (2009) Novel alginates prepared by independent control of chain stiffness and distribution of G-residues: Structure and gelling properties. Carbohydrate Polymers. volum 77 (4).
Academic article
Stalheim, Torunn; Ballance, Simon; Christensen, Bjørn Erik; Granum, P.E.. (2009) Sphagnan – a pectin-like polymer isolated from Sphagnum moss can inhibit the growth of some typical food spoilage and food poisoning bacteria by lowering the pH. Journal of Applied Microbiology. volum 106 (3).
Academic article
Stalheim, Torunn; Ballance, Simon; Christensen, Bjørn Erik; Granum, Per Einar. (2009) Sphagnan - a pectin-like polymer isolated from Sphagnum moss can inhibit the growth of some typical food spoilage and food poisoning bacteria by lowering the pH. Journal of Applied Microbiology. volum 106 (3).
Academic article

2008

Ballance, Simon; Kristiansen, Kåre Andre; Holt, Jarle; Christensen, Bjørn Erik. (2008) Interactions of polysaccharides extracted by mild acid hydrolysis from the leaves of Sphagnum papillosum with either phenylhydrazine, o-phenylenediamine and its oxidation products or collagen. Carbohydrate Polymers. volum 71.
Academic article
Christensen, Bjørn Erik; Vold, Inger Mari Nygård; Vårum, Kjell Morten. (2008) Chain stiffness and extension of chitosans and periodate oxidised chitosans studied by size-exclusion chromatography combined with light scattering and viscosity detectors. Carbohydrate Polymers. volum 74 (3).
Academic article
Steigedal, Magnus; Sletta, Håvard; Moreno, Soledad; Mærk, Mali; Christensen, Bjørn Erik; Bjerkan, Tonje Marita; Ellingsen, Trond Erling; Espín, Guadalupe; Ertesvåg, Helga; Valla, Svein. (2008) The Azotobacter vinelandii AlgE mannuronan C-5-epimerase family is essential for the in vivo control of alginate monomer composition and for functional cyst formation. Environmental Microbiology. volum 10 (7).
Academic article
Strand, Sabina P.; Issa, Mohamed M.; Christensen, Bjørn Erik; Vårum, Kjell Morten; Artursson, Per. (2008) Tailoring of Chitosans for Gene Delivery: Novel Self-Branched Glycosylated Chitosan Oligomers with Improved Functional Properties. Biomacromolecules. volum 9 (11).
Academic article

2007

Ballance, Simon; Borsheim, Knut Yngve; Børsheim, Knut Yngve; Inngjerdingen, Kari Tvete; Ingjerdingen, Kari; Paulsen, Berit Smestad; Christensen, Bjørn Erik. (2007) A re-examination and partial characterisation of polysaccharides released by mild acid hydrolysis from the chlorite-treated leaves of Sphagnum papillosum. Carbohydrate Polymers. volum 67.
Academic article
Christensen, Bjørn Erik; Skjåk-Bræk, Gudmund; Smidsrød, Olav. (2007) Comment and Reply - Comment on “Conformational changes and aggregation of alginic acid as determined by fluorescence correlation spectroscopy”. Biomacromolecules. volum 8.
Editorial
Iotti, M.; Fava, P.; Ballance, Simon; Christensen, Bjørn Erik; Rustad, Turid. (2007) Absorbent pads for food trays made from Sphagnum moss. Italian journal of food sciences.
Academic article
Salehi, Payam; Walker, John; Madsen, Karen L.; Sigurdson, Grant T.; Strand, Berit Løkensgard; Christensen, Bjørn Erik; Jewell, Laurence D.; Churchill, Thomas A.. (2007) Relationship between energetic stress and pro-apoptotic/cytoprotective kinase mechanisms in intestinal preservation. Surgery. volum 141 (6).
Academic article

2006

Gimmestad, Martin; Steigedal, Magnus; Ertesvåg, Helga; Moreno, Soledad; Christensen, Bjørn Erik; Espín, Guadalupe; Valla, Svein. (2006) Identification and characterization of an Azotobacter vinelandii type I secretion system responsible for export of the AlgE-Type mannuronan C-5-epimerases. Journal of Bacteriology. volum 188 (15).
Academic article
Issa, Mohamed M.; Köping-Höggård, Magnus; Tømmeraas, Kristoffer; Vårum, Kjell Morten; Christensen, Bjørn Erik; Strand, Sabina P.; Artursson, Per. (2006) Targeted gene delivery with trisaccharide-substituted chitosan oligomers in vitro and after lung administration in vivo. Journal of Controlled Release. volum 115.
Academic article
Stalheim, Torunn; Ballance, Simon; Børsheim, Knut Yngve; Christensen, Bjørn Erik; Granum, Per Einar. (2006) MICROBIOCIDAL ACTIVITY OF BIOPOLYMERS ISOLATED FROM SPHAGNUM PAPILLOSUM. Fouling, Cleaning & Disinfection in Food Processing 2006 : proceedings of a conference. Cambridge 2006.
Academic chapter/article
Vold, Inger Mari Nygård; Kristiansen, Kåre Andre; Christensen, Bjørn Erik. (2006) A study of the chain stiffness and extension of alginates, in vitro epimerized alginates, and periodate-oxidized alginates using size-exclusion chromatography combined with light scattering and viscosity detectors. Biomacromolecules. volum 7.
Academic article

2005

Bakkevig, Karianne; Sletta, Håvard; Gimmestad, Martin; Aune, Randi; Ertesvåg, Helga; Degnes, Kristin; Christensen, Bjørn Erik; Ellingsen, Trond Erling; Valla, Svein. (2005) Role of the Pseudomonas fluorescens alginate lyase (AlgL) in clearing the periplasm of alginates not exported to the extracellular environment. Journal of Bacteriology. volum 187 (24).
Academic article
Ballance, Simon; Holtan, Synnøve; Aarstad, Olav Andreas; Sikorski, Pawel T.; Skjåk-Bræk, Gudmund; Christensen, Bjørn Erik. (2005) Application of high-performance anion-exchange chromatography with pulsed amperometric detection and statistical analysis to study oligosaccharide distributions - a complementary method to investigate the structure and some properties of alginates. Journal of Chromatography A. volum 1093.
Academic article
Eikenes, Morten; Alfredsen, Gry; Christensen, Bjørn Erik; Militz, Holger; Solheim, Halvor. (2005) Comparison of chitosans with different molecular weights as possible wood preservatives. Journal of Wood Science. volum 51.
Academic article
Strand, Sabina P.; Danielsen, Signe; Christensen, Bjørn Erik; Vårum, Kjell Morten. (2005) Influence of chitosan structure on the formation and stability of DNA-chitosan polyelectrolyte complexes. Biomacromolecules. volum 6.
Academic article
Sletmoen, Marit; Christensen, Bjørn Erik; Stokke, Bjørn Torger. (2005) Probing macromolecular architectures of nanosized cyclic structures of (1-3)-beta-D-glucans by AFM and SEC-MALLS. Carbohydrate Research. volum 340.
Academic article
Vold, Inger Mari Nygård; Christensen, Bjørn Erik. (2005) Periodate oxidation of chitosans with different chemical compositions. Carbohydrate Research. volum 340.
Academic article

2004

Ballance, Simon; Børsheim, Yngve; Christensen, Bjørn Erik. (2004) A unique 5-keto sugar in the leaves of Sphagnum moss: A review of the evidence. 2004.
Scientific anthology
Roubroeks, J.P.; Skjåk-Bræk, Gudmund; Ryan, L.; Christensen, Bjørn Erik. (2004) Molecular weight dependency on the production of the TNF stimulated by fractions of rye (1-3),(1-4)-b-D-glucan. Scandinavian Journal of Immunology. volum 52.
Academic article
Campa, Cristiana; Oust, Astrid; Skjåk-Bræk, Gudmund; Skjak-Braek, G; Paulsen, Berit Smestad; Paoletti, Sergio; Christensen, Bjørn Erik; Ballance, Simon. (2004) Determination of average degree of polymerisation and distribution of oligosaccharides in a partially acid-hydrolysed homopolysaccharide: A comparison of four experimental methods applied to mannuronan. Journal of Chromatography A. volum 1026.
Academic article
Köping-Höggård, M.; Vårum, Kjell Morten; Issa, M.; Danielsen, Signe; Christensen, Bjørn Erik; Stokke, Bjørn Torger; Artursson, P.. (2004) Improved chitosan-mediated gene delivery based on easily dissociated chitosan polyplexes of highly defined chitosan oligomers. Gene Therapy. volum 11.
Academic article

2003

Fredheim, Guro Elise; Braaten, Svein Magne; Christensen, Bjørn Erik. (2003) Comparison of molecular weight and molecular weight distributions of softwood and hardwood lignosulfonates. Journal of wood chemistry and technology. volum 23 (2).
Academic article
Fredheim, Guro Elise; Christensen, Bjørn Erik. (2003) Polyelectrolyte complexes: Interactions between lignosulfonate and chitosan. Biomacromolecules. volum 4 (2).
Academic article
Fredheim, Guro Elise; Braaten, Svein Magne; Christensen, Bjørn Erik. (2003) Comparison of molecular weight and molecular weight distributions of softwood and hardwood lignosulfonates. Journal of wood chemistry and technology. volum 23 (2).
Academic article
Fredheim, Guro Elise; Christensen, Bjørn Erik. (2003) Polyelectrolyte complexes: Interactions between lignosulfonate and chitosan. Biomacromolecules. volum 4 (2).
Academic article

2002

Fredheim, Guro Elise; Braaten, Svein Magne; Christensen, Bjørn Erik. (2002) Molecular weight determination of lignosulfonates by size-exclusion chromatography and multi-angle laser light scattering. Journal of Chromatography A. volum 942 (1-2).
Academic article
Tømmeraas, Kristoffer; Köping-Höggård, M.; Vårum, Kjell Morten; Christensen, Bjørn Erik; Artursson, P.; Smidsrød, Olav. (2002) Preparation and characterisation of chitosans with oligosaccharide branches. Carbohydrate Research. volum 337.
Academic article
Fredheim, Guro Elise; Braaten, Svein Magne; Christensen, Bjørn Erik. (2002) Molecular weight determination of lignosulfonates by size-exclusion chromatography and multi-angle laser light scattering. Journal of Chromatography A. volum 942 (01.feb).
Academic article

2001

Christensen, Bjørn Erik; Ertesvåg, Helga; Beyenal, Haluk; Lewandowski, Zbigniew. (2001) Resistance of biofilms containing alginate-producing bacteria to disintegration by an alginate degrading enzyme (AlgL). Biofouling (Print). volum 17.
Academic article
Christensen, Bjørn Erik; Stokke, Bjørn Torger; Aasprong, Einar. (2001) Gelation of periodate oxidised scleroglucan (scleraldehyde). Carbohydrate Polymers. volum 46.
Academic article

2000

Roubroeks, J. P.; Mastromauro, D I.; Andersson, R.; Christensen, Bjørn Erik; Åman, P.. (2000) Molecular weight, structure, and shape of oat (1@h3),(1@h4)-_B-D-glucan fractions obtained by enzymatic degradation with lichenase. Biomacromolecules. volum 1 (4).
Academic article
Schult, Tove; Moe, Størker; Hjerde, Torgeir; Christensen, Bjørn Erik. (2000) Size exclusion chromatography of cellulose dissolved in LiCl/DMAc using macroporous monodisperse poly(styrene-co-divinylbenzene) particles. Journal of Liquid Chromatography & Related Technologies. volum 23 (15).
Academic article

1999

Christensen, Bjørn Erik. (1999) Physical and chemical properties of extracellular polysaccharides associated with biofilms and related systems. Microbial extracellular polymeric substances.
Academic chapter/article
Hjerde, Torgeir; Smidsrød, Olav; Christensen, Bjørn Erik. (1999) Analysis of the conformational properties of _k- and _i-Carrageenan bysize-exclusion chromatography combined with low-angle laser light scattering. Biopolymers. volum 49.
Academic article

1998

Guo, Bo; Elgsaeter, Arnljot; Christensen, Bjørn Erik; Stokke, Bjørn Torger. (1998) Sclerox-chitosan co-gels: Effects of charge density on swelling of gels in ionic aqueous solution and in poor solvents, and on the rehydration of dried gels. Polymer gels and networks. volum 6.
Academic article
Hjerde, Torgeir; Smidsrød, Olav; Stokke, Bjørn Torger; Christensen, Bjørn Erik. (1998) Acid hydrolysis of k- and i-carrageenan in the disordered and ordered conformations : characterization of partially hydrolyzed samples and single-stranded oligomers released from the ordered structures. Macromolecules. volum 31 (6).
Academic article
Hjerde, Torgeir; Stokke, Bjørn Torger; Smidsrød, Olav; Christensen, Bjørn Erik. (1998) Free-radical degradation of triple-stranded scleroglucan by hydrogen peroxide and ferrous ions. Carbohydrate Polymers. volum 37.
Academic article
Hjerde, Torgeir; Stokke, Bjørn Torger; Smidsrød, Olav; Christensen, Bjørn Erik. (1998) Free-radical degradation of triple-stranded scleroglucan by hydrogen peroxide and ferrous ions. Carbohydrate Polymers. volum 37.
Academic article
Stokke, Bjørn Torger; Christensen, Bjørn Erik; Smidsrød, Olav. (1998) Macromolecular properties of xanthan. Polysaccharides : structural diversity and functional versatility.
Academic chapter/article
Stokke, Bjørn Torger; Christensen, Bjørn Erik; Smidsrød, Olav. (1998) Macromolecular properties of xanthan. Polysaccharides. Structural diversity and functional versat ility.
Academic chapter/article

Scientific articles

Ballance, Simon; Lu, Yudong; Zobel, Hanne; Rieder, Anne; Knutsen, Svein Halvor; Dinu, Vlad T.; Christensen, Bjørn E.; Ulset, Ann-Sissel Teialeret; Schmid, Marius; Maina, Ndegwa; Potthast, Antje; Schiehser, Sonja; Ellis, Peter R.; Harding, Stephen Ernest. (2022) Inter-laboratory analysis of cereal beta-glucan extracts of nutritional importance: An evaluation of different methods for determining weight-average molecular weight and molecular weight distribution. Food Hydrocolloids. volum 127.
Academic article
Münster, Lukáš; Capáková, Zdenka; Humpolíček, Petr; Kuřitka, Ivo; Christensen, Bjørn E.; Vícha, Jan. (2022) Dicarboxylated hyaluronate: Synthesis of a new, highly functionalized and biocompatible derivative. Carbohydrate Polymers. volum 292.
Academic article
Yoshiba, Kazuto; Yasuda, Yota; Christensen, Bjørn E.; Kondo, Chisaki; Miyazaki, Yuji; Nakano, Motohiro. (2022) Association with Imidazole in the Cooperative Order–Disorder Transition in Aqueous Solution of Schizophyllan. Langmuir. volum 38.
Academic article
Mo, Ingrid Vikøren; Schatz, Christophe; Christensen, Bjørn E.. (2021) Functionalisation of the non-reducing end of chitin by selective periodate oxidation: A new approach to form complex block polysaccharides and water-soluble chitin-based block polymers. Carbohydrate Polymers. volum 267.
Academic article
Solberg, Amalie; Mo, Ingrid Vikøren; Aachmann, Finn Lillelund; Schatz, Christophe; Christensen, Bjørn E.. (2021) Alginate-based diblock polymers: preparation, characterization and Ca-induced self-assembly. Polymer Chemistry. volum 12 (38).
Academic article
Tafjord, Joakim; Rytter, Erling; Holmen, Anders; Myrstad, Rune; Svenum, Ingeborg-Helene; Christensen, Bjørn E.; Yang, Jia. (2021) Transition-Metal Nanoparticle Catalysts Anchored on Carbon Supports via Short-Chain Alginate Linkers. ACS Applied Nano Materials. volum 4 (4).
Academic article
Mo, Ingrid Vikøren; Dalheim, Marianne Øksnes; Aachmann, Finn Lillelund; Schatz, Christophe; Christensen, Bjørn E.. (2020) 2,5-Anhydro-d-Mannose End-Functionalized Chitin Oligomers Activated by Dioxyamines or Dihydrazides as Precursors of Diblock Oligosaccharides. Biomacromolecules. volum 21 (7).
Academic article
Mo, Ingrid Vikøren; Feng, Yiming; Dalheim, Marianne Øksnes; Solberg, Amalie; Aachmann, Finn Lillelund; Schatz, Christophe; Christensen, Bjørn E.. (2020) Activation of enzymatically produced chitooligosaccharides by dioxyamines and dihydrazides. Carbohydrate Polymers. volum 232.
Academic article
Kucko, Nathan W.; Li, Wenliang; Martinez, Marcela A. Garcia; Rehman, Ihtesham ur; Ulset, Ann-Sissel Teialeret; Christensen, Bjørn E.; Leeuwenburgh, Sander C.G.; Herber, Ralf-Peter. (2019) Sterilization effects on the handling and degradation properties of calcium phosphate cements containing poly (D,L-lactic-co-glycolic acid) porogens and carboxymethyl cellulose. Journal of Biomedical Materials Research. Part B - Applied biomaterials. volum 107 (7).
Academic article
Stender, Emil GP; Andersen, Christian Dybdahl; Fredslund, Folmer; Holck, Jesper; Solberg, Amalie; Teze, David; Peters, Gunther HJ; Christensen, Bjørn E.; Aachmann, Finn Lillelund; Welner, Ditte H; Svensson, Birte. (2019) Structural and functional aspects of mannuronic acid–specific PL6 alginate lyase from the human gut microbe Bacteroides cellulosilyticus. Journal of Biological Chemistry. volum 294 (47).
Academic article
Tomofuji, Yu; Yoshiba, Kazuto; Christensen, Bjørn E.; Terao, Ken. (2019) Single-chain conformation of carboxylated schizophyllan, a triple helical polysaccharide, in dilute alkaline aqueous solution. Polymer. volum 185.
Academic article
Yoshiba, Kazuto; Saheki, Toshihiko; Christensen, Bjørn E.; Dobashi, Toshiaki. (2019) Conformation and cooperative order-disorder transition in aqueous solutions of β-1,3-d-glucan with different degree of branching varied by the Smith degradation. Biopolymers. volum 110 (9).
Academic article
Christensen, Bjørn E.; Strand, Sabina P.; Basset, Coraline; Kristiansen, Kåre Andre; Ulset, Ann-Sissel Teialeret; Ballance, Simon; Granum, Per Einar. (2018) Macromolecular acidic coating increases shelf life by inhibition of bacterial growth. International journal of food microbiology. volum 285.
Academic article
Yoshiba, Kazuto; Dobashi, Toshiaki; Ulset, Ann-Sissel Teialeret; Christensen, Bjørn E.. (2018) Cooperative Order−Disorder Transition of Carboxylated Schizophyllan in Water−Dimethylsulfoxide Mixtures. Journal of Physical Chemistry B. volum 122 (25).
Academic article
Dalheim, Marianne Øksnes; Ulset, Ann-Sissel Teialeret; Jenssen, Ina Beate; Christensen, Bjørn E.. (2017) Degradation kinetics of peptide-coupled alginates prepared via the periodate oxidation reductive amination route. Carbohydrate Polymers. volum 157.
Academic article
Wold, Christian Winther; Kjeldsen, Christian; Corthay, Alexandre; Rise, Frode; Christensen, Bjørn E.; Duus, Jens Øllgaard; Inngjerdingen, Kari Tvete. (2017) Structural characterization of bioactive heteropolysaccharides from the medicinal fungus Inonotus obliquus (Chaga). Carbohydrate Polymers. volum 185.
Academic article
Yoshiba, Kazuto; Okamoto, Satoka; Dobashi, Toshiaki; Oku, Hiroyuki; Christensen, Bjørn E.; Sato, Takahiro. (2017) Effects of carboxylation of the side chains on the order-disorder transition in aqueous solution of schizophyllan, a triple helical polysaccharide. Carbohydrate Polymers. volum 168.
Academic article
Dalheim, Marianne Øksnes; Arnfinnsdottir, Nina Bjørk; Widmalm, Göran; Christensen, Bjørn E.. (2016) The size and shape of three water-soluble, non-ionic polysaccharides produced by lactic acid bacteria: A comparative study. Carbohydrate Polymers. volum 142.
Academic article
Dalheim, Marianne Øksnes; Vanacker, Julie; Najmi, Maryam A.; Aachmann, Finn Lillelund; Strand, Berit Løkensgard; Christensen, Bjørn E.. (2016) Efficient functionalization of alginate biomaterials. Biomaterials. volum 80.
Academic article
Rieder, Anne; Knutsen, Svein Halvor; Ulset, Ann-Sissel Teialeret; Christensen, Bjørn E.; Andersson, Roger; Mikkelson, Atte; Tuomainen, Päivi; Maina, Ndegwa; Ballance, Simon. (2015) Inter-laboratory evaluation of SEC-post-column calcofluor for determination of the weight-average molar mass of cereal β-glucan. Carbohydrate Polymers. volum 124.
Academic article
Yoshiba, Kazuto; Sato, Takahiro; Osumi, Takaaki; Ulset, Ann-Sissel Teialeret; Christensen, Bjørn E.. (2015) Conformation of carboxylated schizophyllan in aqueous solution. Carbohydrate Polymers. volum 134.
Academic article
Andersen, Therese; Markussen, Christine; Dornish, John Michael; Heier-Baardson, Helene; Melvik, Jan Egil; Alsberg, Eben; Christensen, Bjørn E.. (2014) In situ gelation for cell immobilization and culture in alginate foam scaffolds. Tissue Engineering Part A. volum 20 (3-4).
Academic article
Andersen, Therese; Melvik, Jan Egil; Gåserød, Olav; Alsberg, Eben; Christensen, Bjørn E.. (2014) Ionically gelled alginate foams: Physical properties controlled by type, amount and source of gelling ions. Carbohydrate Polymers. volum 99.
Academic article
Austarheim, Ingvild; Christensen, Bjørn E.; Aas, Hoai Thi Nguyen; Thöle, Christian; Diallo, Drissa; Paulsen, Berit Smestad. (2014) Chemical characterization and complement fixation of pectins from Cola cordifolia leaves. Carbohydrate Polymers. volum 102 (1).
Academic article
Cardoso, DA; Ulset, Ann-Sissel Teialeret; Bender, Johan; Jansen, John A; Christensen, Bjørn E.; Leeuwenburgh, Sander. (2014) Effects of physical and chemical treatments on the molecular weight and degradation of alginate-hydroxyapatite composites. Macromolecular Bioscience. volum 14 (6).
Academic article
Ulset, Ann-Sissel Teialeret; Mori, Hideki; Dalheim, Marianne Øksnes; Hara, Masayuki; Christensen, Bjørn E.. (2014) Influence of amino acids, buffers, and pH on the γ-irradiation-induced degradation of alginates. Biomacromolecules. volum 15 (12).
Academic article
Kelesoglu, Murside Kes; Christensen, Bjørn E.. (2013) Degradation of cellulosic insulation in power transformers: a SEC-MALLS study of artificially aged transformer papers. Cellulose. volum 20 (4).
Academic article
Kelesoglu, Murside Kes; Christensen, Bjørn Erik. (2013) A re-investigation of the Mark-Houwink-Sakurada parameters for cellulose in Cuen: A study based on size-exclusion chromatography combined with multi-angle light scattering and viscometry. Journal of Chromatography A. volum 1281.
Academic article
Kristiansen, Kåre Andre; Dalheim, Marianne Øksnes; Christensen, Bjørn E.. (2013) Periodate oxidation and macromolecular compaction of hyaluronan. Pure and Applied Chemistry. volum 85 (9).
Academic article
Qin, Fen; Kelesoglu, Murside Kes; Christensen, Bjørn E.. (2013) A study of bioactive, branched (1→3)-b-d-glucans in dimethylacetamide/LiCl and dimethyl sulphoxide/LiCl using size-exclusion chromatography with multi-angle light scattering detection. Journal of Chromatography A. volum 1305.
Academic article
Qin, Fen; Sletmoen, Marit; Stokke, Bjørn Torger; Christensen, Bjørn Erik. (2013) Higher order structures of a bioactive, water-soluble (1→3)-b-d-glucan derived from Saccharomyces cerevisiae. Carbohydrate Polymers. volum 92 (2).
Academic article
Andersen, Therese; Melvik, Jan Egil; Gåserød, Olav; Alsberg, Eben; Christensen, Bjørn Erik. (2012) Ionically Gelled Alginate Foams: Physical Properties Controlled by Operational and Macromolecular Parameters. Biomacromolecules. volum 13 (11).
Academic article
Austarheim, Ingvild; Christensen, Bjørn Erik; Hegna, Ida Kristin; Petersen, Bent O.; Duus, Jens O; Bye, Ragnar; Michaelsen, Terje Einar; Diallo, Drissa; Inngjerdingen, Marit; Paulsen, Berit Smestad. (2012) Chemical and biological characterization of pectin-like polysaccharides from the bark of the Malian medicinal tree Cola cordifolia. Carbohydrate Polymers. volum 89 (1).
Academic article
Ballance, Simon; Kristiansen, Kåre Andre; Skogaker, Nan E Tostrup; Tvedt, Kåre E; Christensen, Bjørn Erik. (2012) The localisation of pectin in Sphagnum moss leaves and its role in preservation. Carbohydrate Polymers. volum 87 (2).
Academic article
Qin, Fen; Aachmann, Finn Lillelund; Christensen, Bjørn Erik. (2012) Chain length distribution and aggregation of branched (1→3)-b-D-glucans from Saccharomyces cerevisae. Carbohydrate Polymers. volum 90 (2).
Academic article
Kristiansen, Kåre Andre; Tomren, Henrik Berg; Christensen, Bjørn Erik. (2011) Periodate oxidized alginates: Depolymerization kinetics. Carbohydrate Polymers. volum 86 (4).
Academic article
Liland, Knut Brede; Kes, Murside; Ese, Marit-Helen; Lundgaard, Lars Esben; Christensen, Bjørn Erik. (2011) Study of Oxidation and Hydrolysis of Oil Impregnated Paper Insulation for Transformers using a Microcalorimeter. IEEE transactions on dielectrics and electrical insulation. volum 18 (6).
Academic article
Mellegård, Hilde; From, Cecilie; Christensen, Bjørn Erik; Granum, Per Einar. (2011) Inhibition of Bacillus cereus spore outgrowth and multiplication by chitosan. International journal of food microbiology. volum 149 (3).
Academic article
Mellegård, Hilde; Kovács, Ákos T.; Lindback, Toril; Christensen, Bjørn Erik; Kuipers, Oscar P.; Granum, Per Einar. (2011) Transcriptional responses of Bacillus cereus towards challenges with the polysaccharide chitosan. PLOS ONE. volum 6 (9).
Academic article
Mellegård, Hilde; Strand, Sabina P.; Christensen, Bjørn Erik; Granum, Per Einar; Hardy, Simon P.. (2011) Antibacterial activity of chemically defined chitosans: Influence of molecular weight, degree of acetylation and test organism. International journal of food microbiology. volum 148 (1).
Academic article
Suzuki, Shiho; Christensen, Bjørn Erik; Kitamura, Shinichi. (2011) Effect of mannuronate content and molecular weight of alginates on intestinal immunological activity through Peyer’s patch cells of C3H/HeJ mice. Carbohydrate Polymers. volum 83 (2).
Academic article
Tømmeraas, Kristoffer; Strand, Sabina P.; Christensen, Bjørn Erik; Smidsrød, Olav; Vårum, Kjell Morten. (2011) Preparation and characterization of branched chitosans. Carbohydrate Polymers. volum 83 (4).
Academic article
Chytil, Martin; Strand, Sabina P.; Christensen, Bjørn Erik; Pekar, Miloslav. (2010) Calorimetric and light scattering study of interactions and macromolecular properties of native and hydrophobically modified hyaluronan. Carbohydrate Polymers. volum 81 (4).
Academic article
Hara, Masayuki; Koshimizu, Naoki; Yoshida, Mayumi; Haug, Ingvild; Ulset, Ann-Sissel Teialeret; Christensen, Bjørn Erik. (2010) Cross-Linking and Depolymerisation of gamma-Irradiated Fish Gelatin and Porcine Gelatin Studied by SEC-MALLS and SDS-PAGE: A Comparative Study. Journal of Biomaterials Science. Polymer Edition. volum 21 (6-7).
Academic article
Kristiansen, Kåre Andre; Potthast, Antje; Christensen, Bjørn Erik. (2010) Periodate oxidation of polysaccharides for modification of chemical and physical properties. Carbohydrate Research. volum 345 (10).
Academic article
Ballance, Simon; Aarstad, Olav Andreas; Aachmann, Finn Lillelund; Skjåk-Bræk, Gudmund; Christensen, Bjørn Erik. (2009) Preparation of high purity monodisperse oligosaccharides derived from mannuronan by size-exclusion chromatography followed by semi-preparative high-performance anion-exchange chromatography with pulsed amperometric detection. Carbohydrate Research. volum 344.
Academic article
Kristiansen, Kåre Andre; Ballance, Simon; Potthast, A; Christensen, Bjørn Erik. (2009) An evaluation of tritium and fluorescence labelling combined with multi-detector SEC for the detection of carbonyl groups in polysaccharides. Carbohydrate Polymers. volum 76 (2).
Academic article
Kristiansen, Kåre Andre; Schirmer, Bjørn Christian; Aachmann, Finn Lillelund; Skjåk-Bræk, Gudmund; Draget, Kurt Ingar; Christensen, Bjørn Erik. (2009) Novel alginates prepared by independent control of chain stiffness and distribution of G-residues: Structure and gelling properties. Carbohydrate Polymers. volum 77 (4).
Academic article
Stalheim, Torunn; Ballance, Simon; Christensen, Bjørn Erik; Granum, P.E.. (2009) Sphagnan – a pectin-like polymer isolated from Sphagnum moss can inhibit the growth of some typical food spoilage and food poisoning bacteria by lowering the pH. Journal of Applied Microbiology. volum 106 (3).
Academic article
Stalheim, Torunn; Ballance, Simon; Christensen, Bjørn Erik; Granum, Per Einar. (2009) Sphagnan - a pectin-like polymer isolated from Sphagnum moss can inhibit the growth of some typical food spoilage and food poisoning bacteria by lowering the pH. Journal of Applied Microbiology. volum 106 (3).
Academic article
Ballance, Simon; Kristiansen, Kåre Andre; Holt, Jarle; Christensen, Bjørn Erik. (2008) Interactions of polysaccharides extracted by mild acid hydrolysis from the leaves of Sphagnum papillosum with either phenylhydrazine, o-phenylenediamine and its oxidation products or collagen. Carbohydrate Polymers. volum 71.
Academic article
Christensen, Bjørn Erik; Vold, Inger Mari Nygård; Vårum, Kjell Morten. (2008) Chain stiffness and extension of chitosans and periodate oxidised chitosans studied by size-exclusion chromatography combined with light scattering and viscosity detectors. Carbohydrate Polymers. volum 74 (3).
Academic article
Steigedal, Magnus; Sletta, Håvard; Moreno, Soledad; Mærk, Mali; Christensen, Bjørn Erik; Bjerkan, Tonje Marita; Ellingsen, Trond Erling; Espín, Guadalupe; Ertesvåg, Helga; Valla, Svein. (2008) The Azotobacter vinelandii AlgE mannuronan C-5-epimerase family is essential for the in vivo control of alginate monomer composition and for functional cyst formation. Environmental Microbiology. volum 10 (7).
Academic article
Strand, Sabina P.; Issa, Mohamed M.; Christensen, Bjørn Erik; Vårum, Kjell Morten; Artursson, Per. (2008) Tailoring of Chitosans for Gene Delivery: Novel Self-Branched Glycosylated Chitosan Oligomers with Improved Functional Properties. Biomacromolecules. volum 9 (11).
Academic article
Ballance, Simon; Borsheim, Knut Yngve; Børsheim, Knut Yngve; Inngjerdingen, Kari Tvete; Ingjerdingen, Kari; Paulsen, Berit Smestad; Christensen, Bjørn Erik. (2007) A re-examination and partial characterisation of polysaccharides released by mild acid hydrolysis from the chlorite-treated leaves of Sphagnum papillosum. Carbohydrate Polymers. volum 67.
Academic article
Iotti, M.; Fava, P.; Ballance, Simon; Christensen, Bjørn Erik; Rustad, Turid. (2007) Absorbent pads for food trays made from Sphagnum moss. Italian journal of food sciences.
Academic article
Salehi, Payam; Walker, John; Madsen, Karen L.; Sigurdson, Grant T.; Strand, Berit Løkensgard; Christensen, Bjørn Erik; Jewell, Laurence D.; Churchill, Thomas A.. (2007) Relationship between energetic stress and pro-apoptotic/cytoprotective kinase mechanisms in intestinal preservation. Surgery. volum 141 (6).
Academic article
Gimmestad, Martin; Steigedal, Magnus; Ertesvåg, Helga; Moreno, Soledad; Christensen, Bjørn Erik; Espín, Guadalupe; Valla, Svein. (2006) Identification and characterization of an Azotobacter vinelandii type I secretion system responsible for export of the AlgE-Type mannuronan C-5-epimerases. Journal of Bacteriology. volum 188 (15).
Academic article
Issa, Mohamed M.; Köping-Höggård, Magnus; Tømmeraas, Kristoffer; Vårum, Kjell Morten; Christensen, Bjørn Erik; Strand, Sabina P.; Artursson, Per. (2006) Targeted gene delivery with trisaccharide-substituted chitosan oligomers in vitro and after lung administration in vivo. Journal of Controlled Release. volum 115.
Academic article
Vold, Inger Mari Nygård; Kristiansen, Kåre Andre; Christensen, Bjørn Erik. (2006) A study of the chain stiffness and extension of alginates, in vitro epimerized alginates, and periodate-oxidized alginates using size-exclusion chromatography combined with light scattering and viscosity detectors. Biomacromolecules. volum 7.
Academic article
Bakkevig, Karianne; Sletta, Håvard; Gimmestad, Martin; Aune, Randi; Ertesvåg, Helga; Degnes, Kristin; Christensen, Bjørn Erik; Ellingsen, Trond Erling; Valla, Svein. (2005) Role of the Pseudomonas fluorescens alginate lyase (AlgL) in clearing the periplasm of alginates not exported to the extracellular environment. Journal of Bacteriology. volum 187 (24).
Academic article
Ballance, Simon; Holtan, Synnøve; Aarstad, Olav Andreas; Sikorski, Pawel T.; Skjåk-Bræk, Gudmund; Christensen, Bjørn Erik. (2005) Application of high-performance anion-exchange chromatography with pulsed amperometric detection and statistical analysis to study oligosaccharide distributions - a complementary method to investigate the structure and some properties of alginates. Journal of Chromatography A. volum 1093.
Academic article
Eikenes, Morten; Alfredsen, Gry; Christensen, Bjørn Erik; Militz, Holger; Solheim, Halvor. (2005) Comparison of chitosans with different molecular weights as possible wood preservatives. Journal of Wood Science. volum 51.
Academic article
Strand, Sabina P.; Danielsen, Signe; Christensen, Bjørn Erik; Vårum, Kjell Morten. (2005) Influence of chitosan structure on the formation and stability of DNA-chitosan polyelectrolyte complexes. Biomacromolecules. volum 6.
Academic article
Sletmoen, Marit; Christensen, Bjørn Erik; Stokke, Bjørn Torger. (2005) Probing macromolecular architectures of nanosized cyclic structures of (1-3)-beta-D-glucans by AFM and SEC-MALLS. Carbohydrate Research. volum 340.
Academic article
Vold, Inger Mari Nygård; Christensen, Bjørn Erik. (2005) Periodate oxidation of chitosans with different chemical compositions. Carbohydrate Research. volum 340.
Academic article
Roubroeks, J.P.; Skjåk-Bræk, Gudmund; Ryan, L.; Christensen, Bjørn Erik. (2004) Molecular weight dependency on the production of the TNF stimulated by fractions of rye (1-3),(1-4)-b-D-glucan. Scandinavian Journal of Immunology. volum 52.
Academic article
Campa, Cristiana; Oust, Astrid; Skjåk-Bræk, Gudmund; Skjak-Braek, G; Paulsen, Berit Smestad; Paoletti, Sergio; Christensen, Bjørn Erik; Ballance, Simon. (2004) Determination of average degree of polymerisation and distribution of oligosaccharides in a partially acid-hydrolysed homopolysaccharide: A comparison of four experimental methods applied to mannuronan. Journal of Chromatography A. volum 1026.
Academic article
Köping-Höggård, M.; Vårum, Kjell Morten; Issa, M.; Danielsen, Signe; Christensen, Bjørn Erik; Stokke, Bjørn Torger; Artursson, P.. (2004) Improved chitosan-mediated gene delivery based on easily dissociated chitosan polyplexes of highly defined chitosan oligomers. Gene Therapy. volum 11.
Academic article
Fredheim, Guro Elise; Braaten, Svein Magne; Christensen, Bjørn Erik. (2003) Comparison of molecular weight and molecular weight distributions of softwood and hardwood lignosulfonates. Journal of wood chemistry and technology. volum 23 (2).
Academic article
Fredheim, Guro Elise; Christensen, Bjørn Erik. (2003) Polyelectrolyte complexes: Interactions between lignosulfonate and chitosan. Biomacromolecules. volum 4 (2).
Academic article
Fredheim, Guro Elise; Braaten, Svein Magne; Christensen, Bjørn Erik. (2003) Comparison of molecular weight and molecular weight distributions of softwood and hardwood lignosulfonates. Journal of wood chemistry and technology. volum 23 (2).
Academic article
Fredheim, Guro Elise; Christensen, Bjørn Erik. (2003) Polyelectrolyte complexes: Interactions between lignosulfonate and chitosan. Biomacromolecules. volum 4 (2).
Academic article
Fredheim, Guro Elise; Braaten, Svein Magne; Christensen, Bjørn Erik. (2002) Molecular weight determination of lignosulfonates by size-exclusion chromatography and multi-angle laser light scattering. Journal of Chromatography A. volum 942 (1-2).
Academic article
Tømmeraas, Kristoffer; Köping-Höggård, M.; Vårum, Kjell Morten; Christensen, Bjørn Erik; Artursson, P.; Smidsrød, Olav. (2002) Preparation and characterisation of chitosans with oligosaccharide branches. Carbohydrate Research. volum 337.
Academic article
Fredheim, Guro Elise; Braaten, Svein Magne; Christensen, Bjørn Erik. (2002) Molecular weight determination of lignosulfonates by size-exclusion chromatography and multi-angle laser light scattering. Journal of Chromatography A. volum 942 (01.feb).
Academic article
Christensen, Bjørn Erik; Ertesvåg, Helga; Beyenal, Haluk; Lewandowski, Zbigniew. (2001) Resistance of biofilms containing alginate-producing bacteria to disintegration by an alginate degrading enzyme (AlgL). Biofouling (Print). volum 17.
Academic article
Christensen, Bjørn Erik; Stokke, Bjørn Torger; Aasprong, Einar. (2001) Gelation of periodate oxidised scleroglucan (scleraldehyde). Carbohydrate Polymers. volum 46.
Academic article
Roubroeks, J. P.; Mastromauro, D I.; Andersson, R.; Christensen, Bjørn Erik; Åman, P.. (2000) Molecular weight, structure, and shape of oat (1@h3),(1@h4)-_B-D-glucan fractions obtained by enzymatic degradation with lichenase. Biomacromolecules. volum 1 (4).
Academic article
Schult, Tove; Moe, Størker; Hjerde, Torgeir; Christensen, Bjørn Erik. (2000) Size exclusion chromatography of cellulose dissolved in LiCl/DMAc using macroporous monodisperse poly(styrene-co-divinylbenzene) particles. Journal of Liquid Chromatography & Related Technologies. volum 23 (15).
Academic article
Hjerde, Torgeir; Smidsrød, Olav; Christensen, Bjørn Erik. (1999) Analysis of the conformational properties of _k- and _i-Carrageenan bysize-exclusion chromatography combined with low-angle laser light scattering. Biopolymers. volum 49.
Academic article
Guo, Bo; Elgsaeter, Arnljot; Christensen, Bjørn Erik; Stokke, Bjørn Torger. (1998) Sclerox-chitosan co-gels: Effects of charge density on swelling of gels in ionic aqueous solution and in poor solvents, and on the rehydration of dried gels. Polymer gels and networks. volum 6.
Academic article
Hjerde, Torgeir; Smidsrød, Olav; Stokke, Bjørn Torger; Christensen, Bjørn Erik. (1998) Acid hydrolysis of k- and i-carrageenan in the disordered and ordered conformations : characterization of partially hydrolyzed samples and single-stranded oligomers released from the ordered structures. Macromolecules. volum 31 (6).
Academic article
Hjerde, Torgeir; Stokke, Bjørn Torger; Smidsrød, Olav; Christensen, Bjørn Erik. (1998) Free-radical degradation of triple-stranded scleroglucan by hydrogen peroxide and ferrous ions. Carbohydrate Polymers. volum 37.
Academic article
Hjerde, Torgeir; Stokke, Bjørn Torger; Smidsrød, Olav; Christensen, Bjørn Erik. (1998) Free-radical degradation of triple-stranded scleroglucan by hydrogen peroxide and ferrous ions. Carbohydrate Polymers. volum 37.
Academic article

Journal publications

Solberg, Amalie; Mo, Ingrid Vikøren; Omtvedt, Line Aanerud; Strand, Berit Løkensgard; Aachmann, Finn Lillelund; Schatz, Christophe; Christensen, Bjørn E.. (2021) Carbohydr Polym Special Issue Invited contribution: Click chemistry for block polysaccharides with dihydrazide and dioxyamine linkers - A review. Carbohydrate Polymers.
Scientific translation/review
Christensen, Bjørn Erik; Skjåk-Bræk, Gudmund; Smidsrød, Olav. (2007) Comment and Reply - Comment on “Conformational changes and aggregation of alginic acid as determined by fluorescence correlation spectroscopy”. Biomacromolecules. volum 8.
Editorial

Books

Christensen, Bjørn E.. (2020) Recent trends in carbohydrate chemistry. Synthesis, structure and functions of carbohydrates Vol. 1-2. Elsevier. 2020. ISBN 978-0-12-817467-8.
Scientific anthology
Ballance, Simon; Børsheim, Yngve; Christensen, Bjørn Erik. (2004) A unique 5-keto sugar in the leaves of Sphagnum moss: A review of the evidence. 2004.
Scientific anthology

Part of book/report

Dalheim, Marianne Øksnes; Christensen, Bjørn E.; Comesse, Sébastien; Renou, Frédéric. (2020) Modification of xanthan in the ordered and disordered states. Recent trends in carbohydrate chemistry. Synthesis, structure and functions of carbohydrates Vol. 1-2.
Academic chapter/article
Andersen, Therese; Strand, Berit Løkensgard; Formo, Kjetil Ødegård; Alsberg, Eben; Christensen, Bjørn Erik. (2012) Alginates as biomaterials in tissue engineering. Carbohydrate Chemistry - Chemical and Biological Approaches.
Academic chapter/article
Stalheim, Torunn; Ballance, Simon; Børsheim, Knut Yngve; Christensen, Bjørn Erik; Granum, Per Einar. (2006) MICROBIOCIDAL ACTIVITY OF BIOPOLYMERS ISOLATED FROM SPHAGNUM PAPILLOSUM. Fouling, Cleaning & Disinfection in Food Processing 2006 : proceedings of a conference. Cambridge 2006.
Academic chapter/article
Christensen, Bjørn Erik. (1999) Physical and chemical properties of extracellular polysaccharides associated with biofilms and related systems. Microbial extracellular polymeric substances.
Academic chapter/article
Stokke, Bjørn Torger; Christensen, Bjørn Erik; Smidsrød, Olav. (1998) Macromolecular properties of xanthan. Polysaccharides : structural diversity and functional versatility.
Academic chapter/article
Stokke, Bjørn Torger; Christensen, Bjørn Erik; Smidsrød, Olav. (1998) Macromolecular properties of xanthan. Polysaccharides. Structural diversity and functional versat ility.
Academic chapter/article

Report

Kes, Murside; Christensen, Bjørn Erik; Moe, Størker T.. (2013) Ageing of Cellulosic Insulations in Transformer Oil. 2013. ISBN 978-82-471-4260-8. Doktoravhandlinger ved NTNU (80).
PhD thesis

Teaching

Courses

Media

2022

Academic lecture

Solberg, Amalie; Schatz, Christophe; Christensen, Bjørn E.. (2022) Alginates – Physiochemical properties and state-of-the art applications. Materials from biomass - Summer school . Green Chemistry of Advanced Materials (GREENCAM), a collaboration between NTNU and University of Bucharest; Trondheim, Norway. 2022-09-12 - 2022-09-16.

2021

Academic lecture

Christensen, Bjørn E.. (2021) BLOCK POLYSACCHARIDES BY TERMINAL BLOCK CONJUGATION. EPNOE 2021 . EPNOE; Nantes. 2021-10-11 - 2021-10-15.
Academic lecture

Christensen, Bjørn E.. (2021) Block polysaccharides by terminal conjugation. Polysolvat-13 . Osaka University; Osaka. 2021-11-09 - 2021-11-12.

2019

Lecture

Christensen, Bjørn E.. (2019) Plast og mikroplast: Uavklarte spørsmål og nye muligheter?. Tekna Biotec seminar . Tekna; NTNU. 2019-10-28 - 2019-10-28.
Academic lecture

Christensen, Bjørn E.. (2019) Structure-function properties of polysaccharides studied by multidetector SEC. 6th EPNOE International Polysaccharide Conference . EPNOE; 2019-10-21 - 2019-10-25.

2018

Lecture

Christensen, Bjørn E.. (2018) Alginates. Summer Course Glycosciences 15th European Training Course on Carbohydrates 24 – 28 June 2018, Wageningen, the Netherlands ; Wageningen. 2018-06-24 - 2018-06-28.
Academic lecture

Christensen, Bjørn E.. (2018) Characterisation of polysaccharides. 10th Microencapsulation Training School . NTNU Bioencapsulation Research Group; Trondheim. 2018-09-18 - 2018-09-21.
Lecture

Christensen, Bjørn E.. (2018) Characterising physicochemical properties of polysaccharides. Summer Course Glycosciences 15th European Training Course on Carbohydrates 24 – 28 June 2018, Wageningen, the Netherlands ; Wageningen. 2018-06-24 - 2018-06-28.
Academic lecture

Christensen, Bjørn E.. (2018) ICS 2018: Polysaccharide Engineering: Lateral and terminal modification. 29th Int. Carbohydrate Symposium . ICO: Int. Carbohydrate Organization og Univ. Lisboa, Portuga; Lisboa. 2018-07-14 - 2018-07-19.
Academic lecture

Christensen, Bjørn E.. (2018) Next generation polysaccharides. Gjesteforelesning . Ehime University. Japan; Matsuyama. 2018-11-30 - 2018-11-30.
Academic lecture

Christensen, Bjørn E.. (2018) Next generation polysaccharides - Namba talk. Workshop on interdisciplinary approaches on carbohydrate engineering . Osaka Prefecture University; Namba. 2018-03-09 - 2018-03-09.
Academic lecture

Christensen, Bjørn E.. (2018) Xanthan and Next generation polysaccharides. Seminar Osaka University . Osaka University (Prof. Takahiro Sato); Osaka University. 2018-03-13 - 2018-03-13.
Poster

Mo, Ingrid Vikøren; Solberg, Amalie; Dalheim, Marianne Øksnes; Schatz, Christophe; Christensen, Bjørn E.. (2018) Modular block polysaccharides based on renewable resources. 12th SPSJ International Polymer Conference . The Society of Polymer Science, Japan; Hiroshima. 2018-12-04 - 2018-12-07.
Poster

Mo, Ingrid Vikøren; Solberg, Amalie; Dalheim, Marianne Øksnes; Schatz, Christophe; Christensen, Bjørn E.. (2018) Modular block polysaccharides based on renewable resources (Poster). ICP 12 ; 2018-12-04 - 2018-12-07.
Poster

Yoshiba, Kazuto; Tomufuji, Yu; Terao, Ken; Dobashi, Toshiaki; Christensen, Bjørn E.. (2018) Molecular conformation of carboxylated schizophyllan after the denaturation from SEC-MALS and SAXS measurements. 12th SPSJ International Polymer Conference . The Society of Polymer Science, Japan; Hiroshima. 2018-12-04 - 2018-12-07.

2017

Academic lecture

Christensen, Bjørn E.. (2017) Alginates: Structure, function, and chemical modifications. 3ème Séminaire du GDR Symbiose . Cermav-CNRS/INRA, France; Montpellier. 2017-05-29 - 2017-06-01.
Academic lecture

Christensen, Bjørn E.. (2017) Nex generation polysaccharides. Instituttseminar IBT . IBT, NTNU; IBT, NTNU. 2017-06-21 - 2017-06-21.
Academic lecture

Christensen, Bjørn E.. (2017) Polysaccharide Engineering: Lateral and terminal functionalization - a few examples from recent research. Seminar Osaka Prefecture University . Osaka Prefecture University (Prof. S. Kitamura); Namba, Osaka. 2017-03-06 - 2017-03-06.
Academic lecture

Christensen, Bjørn E.. (2017) Polysaccharide Engineering: Lateral and terminal substitutions (OL 135). 19th Eurocarb 2017 . ECO; Barcelona. 2017-07-02 - 2017-07-06.
Academic lecture

Christensen, Bjørn E.; Dalheim, Marianne Øksnes; Vikøren Mo, Ingrid; Schatz, Christophe. (2017) POLYSACCHARIDE ENGINEERING: LATERAL AND TERMINAL MODIFICATIONS. 5 th EPNOE International Polysaccharide Conference . EPNOE; Jena. 2017-08-20 - 2017-08-24.
Poster

Mo, Ingrid Vikøren; Dalheim, Marianne Øksnes; Schatz, Christophe; Christensen, Bjørn E.; Solberg, Amalie. (2017) Preparation and Characterization of Oligosaccharide-Dihydrazide Conjugates. European Carbohydrate Symposium, Eurocarb 2017 . European Carbohydrate Organisation; Barcelona. 2017-07-02.
Poster

Yoshiba, Kazuto; Christensen, Bjørn E.. (2017) Structural change of the carboxylated schizophyllan (sclerox) in aqueous solutions. 19th Eurocarb 2017 . Eur. Carbohydrate Organisation (ECO); Barcelona. 2017-07-02 - 2017-07-06.

2016

Academic lecture

Christensen, Bjørn E.. (2016) Characterisation physico-chemical properties of polysaccharides. 14th European Training Course on Carbohydrates ; Groningen. 2016-06-12 - 2016-06-16.
Lecture

Christensen, Bjørn E.. (2016) Peptide-substituted alginate biomaterials. 28th Int. Carbohydrate Symposium . Int. Carbohydrate Organization; New Orleans. 2016-07-17 - 2016-07-22.
Academic lecture

Christensen, Bjørn E.. (2016) Polysaccharide Engineering: Some recent examples and future perspectives II. Invited guest lecture, Max Planck Institute of Colloids and Surfaces . Max Planck Institute of Colloids and Surfaces; Golm. 2016-05-24 - 2016-05-25.
Academic lecture

Christensen, Bjørn E.. (2016) Polysaccharide Engineering: Some recent examples. Seminar San Sebastian. Gjesteforelesning . CIC BiomaGUNE; San Sebastian. 2016-05-11 - 2016-05-11.
Academic lecture

Christensen, Bjørn E.. (2016) Structure, properties and applications of alginates. 14th European Training Course on Carbohydrates ; Groningen. 2016-06-12 - 2016-06-16.
Lecture

Christensen, Bjørn E.. (2016) Structure-function relationships in polysaccharides. Institute seminar . IECB; Bordeaux. 2016-09-23 - 2016-09-23.
Poster

Dalheim, Marianne Ø.; Widmalm, Gøran; Christensen, Bjørn E.. (2016) Structural features influencing size and chain extension of O-antigenic polysaccharides from E. coli strains 44, 125, 142 and 173. 28th Int. Carbohydr. Conference . ICO; New Orleans. 2016-07-17 - 2016-07-22.
Academic lecture

Dalheim, Marianne Øksnes; Vanacker, Julie; Sandvig, Ioanna; Aachmann, Finn Lillelund; Skjåk-Bræk, Gudmund; Christensen, Bjørn E.; Strand, Berit Løkensgard. (2016) Functionalization of alginate for tissue engineering applications. 9th meeting of the Scandinavian Society for Biomaterials . Scandinavian Society for Biomaterials; Reykjavik. 2016-06-01 - 2016-06-03.
Poster

Mo, Ingrid Vikøren; Dalheim, Marianne Øksnes; Christensen, Bjørn E.; Schatz, Christophe. (2016) Perparation and Characterization of Chitin-Dihydrazide Conjugates. International Carbohydrate Symposium, ICS 2016 . International Carbohydrate Organization; New Orleans. 2016-07-17 - 2016-07-21.
Academic lecture

Strand, Berit Løkensgard; Dalheim, Marianne Øksnes; Arlov, Øystein; Aachmann, Finn Lillelund; Christensen, Bjørn E.; Skjåk-Bræk, Gudmund. (2016) Chemoenzymatic modification of alginates for tissue engineering applications. 5th Portuguese Young Chemists (5th PYCheM) and 1st European Young Chemists (1st EYCheM) Meeting. . CHEM2NATURE; Guimarães. 2016-04-26 - 2016-04-29.

2015

Poster

Rieder, Anne; Knutsen, Svein Halvor; Ulset, Ann-Sissel Teialeret; Christensen, Bjørn E.; Andersson, Roger; Mikkelson, Atte; Tuomainen, Päivi; Maina, Ndegwa; Ballance, Simon. (2015) Inter-laboratory evaluation of SEC-post-column calcofluor for determination of the weight-average molar mass of cereal β-glucan. 6th International Dietary Fibre Conference 2015 . ICC (Int. Association for Cereal Science and Technology); Paris. 2015-06-01 - 2015-06-03.
Academic lecture

Strand, Berit Løkensgard; Dalheim, Marianne Øksnes; Vanacker, Julie; Aachmann, Finn Lillelund; Skjåk-Bræk, Gudmund; Christensen, Bjørn E.. (2015) Functionalization of alginate for tissue engineering applications. KiFEE . NTNU; Trondheim. 2015-09-20 - 2015-09-23.

2014

Lecture

Christensen, Bjørn E.; Stokke, Bjørn Torger; Vårum, Kjell Morten; Kitamura, Shinichi. (2014) The variety of practical uses of kombu (Laminaria) apart from as a cooking ingredient. Kyoto International Forum for Environment and Energy ; Doshisha University. 2014-03-15 - 2014-03-15.

2013

Interview

Christensen, Bjørn Erik. (2013) Brunalger skal forlenge holdbarheten. http://www.kyst.no [Internett]. 2013-01-17.
Interview

Christensen, Bjørn Erik. (2013) Ny metode bevarer maten lengre. NRK Trøndelag [Radio]. 2013-01-16.
Interview

Christensen, Bjørn Erik. (2013) Tang forlenger holdbarhet på mat. Nordlys [Avis]. 2013-01-19.
Interview

Christensen, Bjørn Erik. (2013) Tangspray skal gjøre mat mer holdbar. Bergens Tidende [Avis]. 2013-01-16.
Interview

Christensen, Bjørn Erik; Aursand, Eli Grong. (2013) Økt levetidfor mat: -Gir bedre utnyttelse av råvarer. Adresseavisen [Avis]. 2013-01-16.

2011

Academic lecture

Kristiansen, Kåre Andre; Strand, Sabina P.; Christensen, Bjørn Erik. (2011) Novel polysaccharide architectures for biomedical applications. 7th International Conference on Polysaccharides-Glycoscience 2011 ; Prague. 2011-11-02 - 2011-11-04.

2008

Academic lecture

Strand, Sabina P.; Issa, Mohamed M.; Christensen, Bjørn Erik; Artursson, Per; Vårum, Kjell Morten. (2008) Molecular tailoring of chitosans for gene delivery. 24th Int. Carbohydrate Symposium ; Oslo. 2008-07-27 - 2008-08-01.
Academic lecture

Strand, Sabina P.; Issa, Mohamed M.; Christensen, Bjørn Erik; Artursson, Per; Vårum, Kjell Morten. (2008) Tailoring of chitosans for gene delivery. 8th World Biomaterials Congress ; Amsterdam. 2008-05-28 - 2008-06-01.

2007

Poster

Aarstad, Olav Andreas; Ballance, Simon; Christensen, Bjørn Erik; Skjåk-Bræk, Gudmund. (2007) Application of HPAEC-PAD to derermine the distribution of oligosaccharides in acid hydrolysed alginate with varying composition. 14th European Carbohydrate Symposium ; Lübeck. 2007-09-02 - 2007-09-07.
Academic lecture

Christensen, Bjørn Erik. (2007) Application of GPC-MALLS-Viscosity measurements to characterization of biopolymers. Seminar lecture ; Osaka Prefecture University. 2007-04-19 - 2007-04-19.
Academic lecture

Christensen, Bjørn Erik. (2007) Chain stiffness of semiflexible polysaccharides: a comparative analysis. 14th European Carbohydrate Conference ; Lübeck. 2007-09-02 - 2007-09-07.
Academic lecture

Christensen, Bjørn Erik. (2007) Master of Science in Nanotechnology (at NTNU). Int. Conference on Nanoscience and Technology (Session on nano education) ; Stockholm. 2007-07-04 - 2007-07-06.
Academic lecture

Christensen, Bjørn Erik. (2007) Polysaccharides with reactive carbonyl groups. KIFEE seminar ; Biwako. 2007-12-04 - 2007-12-07.
Academic lecture

Christensen, Bjørn Erik; Vold, Inger Mari Nygård; Kristiansen, Kåre Andre; Stokke, Bjørn Torger; Sletmoen, Marit. (2007) Analysis of shape and interactions of polysaccharides and polysaccharide complexes using size-exclusion chromatography with multiple detectors. SCM-3 Third International Symposium on Separation and Characterization of Natural and Synthetic Macromolecules ; Rhône Congress Centre, Amsterdam.. 2007-01-31 - 2007-02-02.

2006

Academic lecture

Ballance, Simon; Stalheim, T.; Granum, P.E.; Christensen, Bjørn Erik. (2006) Antimicrobial polysaccharides from Sphagnum moss. The second KIFFE symposium on materials and processes for environment and energy ; NTNU, Trondheim. 2006-09-06 - 2006-09-08.
Academic lecture

Christensen, Bjørn Erik. (2006) Biomaterials based on polysaccharides with reactive carbonyl groups: applications in biomedicine and food preservation. Lecture/seminar at Dept. Biochemistry, Lund University ; Lund. 2006-03-30 - 2006-03-30.
Academic lecture

Christensen, Bjørn Erik. (2006) NOBIPOL - The Norwegian Biopolymer Laboratory at NTNU. Seminar for the Ambassador of Thailand ; NTNU. 2006-02-17 - 2006-02-17.
Academic lecture

Christensen, Bjørn Erik. (2006) Polysaccharide research in Trondheim. History and selected examples from current research. CAP seminar ; Lund. 2006-05-09 - 2006-05-09.
Academic lecture

Stalheim, T.; Ballance, Simon; Christensen, Bjørn Erik; Granum, P.E.. (2006) Microbiocidal activity of biopolymers isolated from Sphagnum papillosum. Fouling, Cleaning & Disinfection in Food Processing 2006 ; University of Cambridge. 2006-03-20 - 2006-03-22.
Academic lecture

Vold, Inger Mari Nygård; Kristiansen, Kåre A.; Christensen, Bjørn Erik. (2006) Chain extension and flexibility of oxidised and in vitro epimerised alginates studied by size-exclusion chromatography using light scattering and viscosity detectors. 8th International Hydrocolloids Conference ; Trondheim. 2006-06-18 - 2006-06-22.
Poster

Ballance, Simon; Børsheim, Knut Yngve; Ingjerdingen, K.; Paulsen, B.S.; Christensen, Bjørn Erik. (2006) A re-examination and partial characterisation of polysaccharides released by mild acid hydrolysis from the chlorite treated leaves of Sphagnum papillosum. 8th International Hydrocolloids conference ; NTNU, Trondheim. 2006-06-18 - 2006-06-22.
Poster

Ballance, Simon; Børsheim, Knut Yngve; Ingjerdingen, K.; Paulsen, B.S.; Christensen, Bjørn Erik. (2006) A re-examination and partial characterisation of polysaccharides released by mild acid hydrolysis from the chlorite treated leaves of Sphagnum papillosum. 13th International Carbohydrate Symposium ; Whistler. 2006-07-23 - 2006-07-28.
Academic lecture

Ballance, Simon; Børsheim, Knut Yngve; Stalheim, T.; Christensen, Bjørn Erik. (2006) The characterisation and microbiocidal activity of polysaccharides released from the leaves of Sphagnum papillosum. Invited guest lecture ; Universitetet i Bergen. 2006-02-28.
Academic lecture

Christensen, Bjørn Erik; Vold, Inger Mari Nygård; Kristiansen, Kåre Andre; Stokke, Bjørn Torger; Sletmoen, Marit. (2006) Analysis of Shape and Interactions of Polysaccharides and Polysaccharide Complexes Using Size-Exclusion Chromatography With Multiple Detectors. XXIIIrd International Carbohydrate Symposium ; Whistler, British Columbia. 2006-07-23 - 2006-07-28.
Academic lecture

Iotti, M.; Fava, P.; Ballance, Simon; Christensen, Bjørn Erik; Rustad, Turid. (2006) Anti-microbial bio-pad for food applications. Shelf-life international meeting ; University of Catania. 2006-06-21 - 2006-06-23.
Poster

Kristiansen, Kåre Andre; Ballance, Simon; Christensen, Bjørn Erik. (2006) A New Method to Measure Carbonyl Groups in Polysaccharides by Reduction with Tritiated Borohydride Combined with Multi-detector SEC. ICS-2006 (International Carbohydrate Symposium 2006) ; Telus Whistler Conference centre, Whistler. 2006-07-23 - 2006-07-28.
Academic lecture

Sletmoen, Marit; Christensen, Bjørn Erik; Stokke, Bjørn Torger. (2006) Structure and behaviour of Scleroglucan and polyC-scleroglucan complexes. the second KIFEE symposium . Kyoto international forum for environment and energy; NTNU. 2006-09-06 - 2006-09-08.
Academic lecture

Stalheim, Torunn; Hegna, Ida Kristin; Ballance, Simon; Christensen, Bjørn Erik; Granum, Per Einar. (2006) Antimicrobial activity of biopolymers isolated from Sphagnum moss. 1st Norwegian Microbiology Meeting 2006, NoMi-06 ; Geilo. 2006-10-22 - 2006-10-24.

2005

Academic lecture

Christensen, Bjørn Erik. (2005) A study of the chain stiffness in alginates using size-exclusion chromatography combined with light-scattering and viscosity detectors. Second International Symposium on Separation and Characterization of Natural and Synthetic Macromolecules (SCM-2) ; 2005-02-02 - 2005-02-04.
Academic lecture

Christensen, Bjørn Erik. (2005) Antimicrobial polysaccharides from Sphagnum mosses. Innovation seminar . NT faculty, NTNU; Trondheim. 2005-09-26 - 2005-09-26.
Academic lecture

Christensen, Bjørn Erik. (2005) Biomaterials based on polysaccharides with reactive carbonyl groups: applications in biomedicine and food preservation. KIFEE workshop ; Kyoto. 2005-10-07 - 2005-10-07.
Academic lecture

Christensen, Bjørn Erik. (2005) Presentation of NOBIPOL research. BASF Plant Science ; 2005-04-13 - 2005-04-13.
Academic lecture

Christensen, Bjørn Erik; Vold, Inger Mari Nygård. (2005) Chain extension and flexibility of oxidised and in vitro epimerised alginates studied by size-exclusion chromatography using light scattering and viscosity detectors. 13th Eur. Carbohydr. Conference ; Bratislava. 2005-08-21 - 2005-08-26.
Poster

Gimmestad, Martin; Steigedal, Magnus; Christensen, Bjørn Erik; Sletta, Håvard; Ellingsen, Trond E; Valla, Svein; Ertesvåg, Helga. (2005) Identification and characterization of an Azotobacter vinelandii Type I secretion system responsible for export of the AlgE-type mannuronan C5-epimerase. 2nd European Conference on Prokaryotic Genomes. PROKAGEN 2005 . Dechema e.V.; Göttingen. 2005-09-23 - 2005-09-26.
Academic lecture

Sletmoen, Marit; Christensen, Bjørn Erik; Stokke, Bjørn Torger. (2005) Probind macromolecular architecture of (1,3)-beta-D-Glucans and (1,3)-beta-D-Glucan-polynucleotide complexes. 13th European Carbohydrate Symposium ; Bratislava. 2005-08-21 - 2005-08-26.
Academic lecture

Sletmoen, Marit; Kitamura, Shinichi; Falch, Berit H.; Christensen, Bjørn Erik; Stokke, Bjørn Torger. (2005) Scleroglucan morphologies observed by ultramicroscopy and solution techniques. Second Symposium of Kyoto International Forum for Environment and Energy (KIFEE) ; Kyoto. 2005-10-05 - 2005-10-07.

2004

Poster

Aarstad, Olav; Holtan, Synnøve; Skjåk-Bræk, Gudmund; Christensen, Bjørn Erik; Ballance, Simon. (2004) Application of HPAEC-PAD to determine the average degree of polymerisation and distribution of oligosaccharides from partially acid hydrolysed mannuronan and guluronan. Marine Biopolymers . NOBIPOL, NTNU; Trondheim. 2004-06-27 - 2004-06-29.
Poster

Andersen, Therese; Christensen, Bjørn Erik. (2004) Relation between chemical composition and chain length in alginates. Marine Biopolymers Conference . NOBIPOL, NTNU; Trondheim. 2004-06-27 - 2004-06-29.
Poster

Andersen, Therese; Christensen, Bjørn Erik. (2004) Relationships between chemical composition and chain length in alginates. Marine Biopolymers . NOBIPOL, NTNU; Trondheim. 2004-06-27 - 2004-06-29.
Academic lecture

Ballance, Simon; Børsheim, Yngve; Christensen, Bjørn Erik. (2004) Chemical composition and antimicrobial properties of sphagnan: A pectin-related polysaccharide with reactive carbonyl groups. 22nd Int. Carbohydr. Symp. ; Glasgow. 2004-07-23 - 2004-07-27.
Poster

Christensen, Bjørn Erik. (2004) Antimicrobial nanoparticles from Sphagnum moss. Nanomat Conference ; Oslo. 2004-06-03 - 2004-06-04.
Academic lecture

Christensen, Bjørn Erik. (2004) Research collaboration between Norway and Japan within the science of marine and microbial biopolymers. Japan-seminar ; Trondheim. 2004-08-12 - 2004-08-12.
Academic lecture

Christensen, Bjørn Erik. (2004) Sphagnum mosses and peat: New possibilities for the food- and packaging industries?. Emballasjeforsk, Matforsk ; Ås. 2004-10-12 - 2004-10-12.
Poster

Sletmoen, Marit; Christensen, Bjørn Erik; Stokke, Bjørn Torger. (2004) Nanosized cyclic structures of beta-1,3-D-glucans: Competing species in renaturation gelation of scleroglucan. Polymer Networks 2004, 17th Polymer Networks Group meeting . Polymer Networks Group; Bethesda. 2004-08-15 - 2004-08-19.
Academic lecture

Strand, Sabina P.; Danielsen, Signe; Christensen, Bjørn Erik; Vårum, Kjell Morten. (2004) Formation and stability of DNA-chitosan polyelectrolyte complexes. Marine Biopolymers . NOBIPOL, NTNU; Trondheim. 2004-06-27 - 2004-06-29.
Academic lecture

Vold, Inger Mari Nygård; Christensen, Bjørn Erik. (2004) A study of the chain stiffness in alginates using size-exclusion chromatography combined with light-scattering and viscosity detectors. Marine Biopolymers . NOBIPOL, NTNU; Trondheim. 2004-06-27 - 2004-06-29.
Poster

Vold, Inger Mari Nygård; Christensen, Bjørn Erik. (2004) Periodate oxidation of chitosans. Marine Biopolymers . NOBIPOL, NTNU; Trondheim. 2004-06-27 - 2004-06-29.

2003

Academic lecture

Ballance, Simon; Børsheim, Knut Yngve; Christensen, Bjørn Erik. (2003) Sphagnan: a novel polysaccharide with reactive carbonyl groups that protects other biomaterials from biodegradation. [Mangler data] . Dept. of Pharmacy, Univ. Oslo; Oslo. 2003-11-13.
Academic lecture

Ballance, Simon; Børsheim, Knut Yngve; Christensen, Bjørn Erik. (2003) Sphagnan: a novel polysaccharide with reactive carbonyl groups that protects other biomaterials from biodegradation. Seminar innen polymerer og kompositter. Tematisk satsningsområde materialer, NTNU . [Mangler data]; Jægtvolden fjord hotel. 2003-10-24.
Academic lecture

Ballance, Simon; Børsheim, Knut Yngve; Engtrø, Helle; Christensen, Bjørn Erik. (2003) Sphagnan: A novel polysaccharide with reactive carbonyl groups protect other biomaterials from biodegradation. 6. Norske Polymer- og kolloidvitenskapelige Vårmøte . [Mangler data]; Wadahl. 2003-04-09.
Academic lecture

Ballance, Simon; Børsheim, Knut Yngve; Engtrø, Helle; Christensen, Bjørn Erik. (2003) Sphagnan: a novel polysaccharide with reactive carbonyl groups that protects other biomaterials from biodegradation. International Symposium on Polysaccharide Engineering . [Mangler data]; Osaka Prefecture University, Sakai, Osaka, Japan. 2003-06-10.
Academic lecture

Ballance, Simon; Børsheim, Knut Yngve; Painter, Terence John; Christensen, Bjørn Erik. (2003) Sphagnan: a novel polysaccharide with reactive carbonyl groups that protects other biomaterials from biodegradation. 12th European Carbohydrate Symposium (EUROCARB XII) . [Mangler data]; Grenoble. 2003-07-11.
Academic lecture

Christensen, Bjørn Erik. (2003) Forskning på sphagnan og Sphagnan-moser. Norske torv-og jordprodusenters bransjeforbund . [Mangler data]; Vikhamar. 2003-09-04.
Academic lecture

Danielsen, Signe; Maurstad, Gjertrud; Sletmoen, Marit; Skjåk-Bræk, Gudmund; Vårum, Kjell Morten; Christensen, Bjørn Erik; Stokke, Bjørn Torger. (2003) Nanotechnology at the interface of biopolymers. Nanotech 2003 + future . [Mangler data]; Tokyo. 2003-02-28.
Academic lecture

Nygård, Inger Mari; Ulset, Ann-Sissel; Christensen, Bjørn Erik. (2003) A study of alginates by size-exclusion chromatography combined with light-scattering and viscosity detectors. Teveltunet conference (NOBIPOL) . [Mangler data]; Teveltunet. 2003-05-20.
Academic lecture

Nygård, Inger Mari; Ulset, Ann-Sissel; Smidsrød, Olav; Christensen, Bjørn Erik. (2003) A study of the chain stiffness in alginates using size-exclusion chromatography combined with light-scattering and viscosity detectors. European Polymer Federation Symposium 03 . [Mangler data]; Stockholm. 2003-06-27.
Academic lecture

Schult, Tove; Christensen, Bjørn Erik; Moe, Størker. (2003) Degradation of cellulose during carboxymethylation. 12th International Symposium on Wood and Pulping Chemistry. . [Mangler data]; Madison, WI, USA. 2003-06-12.

2002

Academic lecture

Ballance, Simon; Børsheim, Knut Yngve; Painter, Terence John; Christensen, Bjørn Erik. (2002) Sphagnan: A novel polysaccharide that protects other biomaterials from degradation. 7th European Training Course on Carbohydrates . [Mangler data]; Wageningen, The Netherlands. 2002-06-27.
Poster

Ballance, Simon; Børsheim, Knut Yngve; Painter, Terence John; Christensen, Bjørn Erik. (2002) Sphagnan: A novel polysaccharide that protects other biomaterials from degradation. 7th European Training Course on Carbohydrates . [Mangler data]; Wageningen, The Netherlands. 2002-06-27.
Academic lecture

Ballance, Simon; Børsheim, Knut Yngve; Painter, Terence John; Christensen, Bjørn Erik. (2002) Sphagnan: A novel polysaccharide with reactive carbonyl groups that bind ammonium and can also protect other biomaterials from degradation. Third International symposium on the biology of Sphagnum . [Mangler data]; Uppsala, Sweden-Trondheim, Norway. 2002-08-23.
Poster

Ballance, Simon; Børsheim, Knut Yngve; Painter, Terence John; Christensen, Bjørn Erik. (2002) Sphagnan: A pectin-like, chemically reactive polysaccharide found in Sphagnum mosses. Plant Polysaccharide Workshop . [Mangler data]; Palm Cove, Queensland, Australia. 2002-07-06.
Poster

Ballance, Simon; Børsheim, Knut Yngve; Painter, Terence John; Christensen, Bjørn Erik. (2002) Sphagnan: a novel polysaccharide with reactive carbonyl groups that protects other biomaterials from biodegradation. 21st International Carbohydrate Symposium . [Mangler data]; Cairns, Australia. 2002-07-12.
Academic lecture

Ballance, Simon; Børsheim, Knut Yngve; Painter, Terence John; Christensen, Bjørn Erik. (2002) Sphangnan and Sphagnum holocellulose: Novel polysaccharides with reactive carbonyl groups that protect other biomaterials from biodegradation. Norsk Biokjemisk kontaktmøte . [Mangler data]; Røros. 2002-01-19.
Poster

Børsheim, Knut Yngve; Ballance, Simon; Painter, Terence John; Christensen, Bjørn Erik. (2002) Bacteria adhere strongly to the hollocellulose component of Sphagnum mosses and this interaction may form an important part of the preservative nature of peat bogs. Third International symposium on the biology of Sphagnum . [Mangler data]; Uppsala, Sweden-Trondheim, Norway. 2002-08-23.
Academic lecture

Christensen, Bjørn Erik. (2002) The shape, extension and flexibility of polysaccharides in aqueous solutions. Ph.D. course 'Polysaccharides-Chemistry and Materials' . [Mangler data]; Chalmer, Göteborg. 2002-08-28.
Academic lecture

Christensen, Bjørn Erik; Stokke, Bjørn Torger; Smidsrød, Olav; Hjerde, Torgeir; Myhr, Mildrid H.; Kitamura, Shinichi. (2002) The degradation of xanthan by acid or peroxide: Effects on side chain composition and conformational properties. Seminar Japan 2002 . [Mangler data]; Trondheim. 2002-10-04.
Poster

Fredheim, Guro Elise; Christensen, Bjørn Erik. (2002) Polyelectrolyte complexes: interactions between lignosulfonate and chitosan. 5th International Conference of the European Chitin Society . [Mangler data]; Trondheim. 2002-06-28.

2001

Poster

Børsheim, Knut Yngve; Christensen, Bjørn Erik; Painter, Terence John. (2001) Bacteria adhere strongly to the holocellulose component characteristic of Sphagnum mosses, and this interaction may form an important part of the remarkable presevative nature of peat bogs. International Symposium on Microbial Ecology . [Mangler data]; Amsterdam, The Netherlands. 2001-08-31.

1999

Academic lecture

Schult, Tove; Hjerde, Torgeir; Christensen, Bjørn Erik; Moe, Størker. (1999) The Application of Macroporous, Monodisperse poly(styrene-co-divinylbenzene) Particles for Determining the Molecular Weight of Cellulose in DMAc/ LiCl by SEC-MALLS. 3. Norske polymer- og kolloidvitenskapelige vårmøte . [Mangler data]; Wadahl, Norway, 1999.

1998

Academic lecture

Schult, Tove; Christensen, Bjørn Erik; Moe, Størker. (1998) Size exclusion chromatography of cellulose : a novel application of macroporous monodisperse particles. International Carbohydrate Symposium . [Mangler data]; San Diego, USA.

1997

Popular scientific lecture

Christensen, Bjørn Erik. (1997) Conformational properties of k- and i-carrageenan studied by SEC-LALLA. 9th European Carbohydrate Symposium . [Mangler data]; Utrecht, 05-11.07.97.
Academic lecture

Christensen, Bjørn Erik. (1997) Polysaccharides. Tema Nord 1997, Nordic Council of Ministers . [Mangler data]; København.

Språkvelger

Bjørn E. Christensen

Bjørn E. Christensen

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Areas of speciality/Fields of responsibilityBiopolymers

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