Background and activities

Areas of speciality

Research activities are mainly oriented to raw material- and product quality and how processing affects properties of fish and seafood products. The activity are mainly focused on processing of Atlantic salmon and codfish, and especially salt curing, drying and smoking, together with heat processing and packaging. The use of CO2 in innovative combinations to increase quality and shelf life of lightly processed seafood products are important in several active research projects.

Characterization of chemical-, physiochemical-, physical-, sensorial-, and microbial quality are important tools for validation of processing parameters. In the food science group, we have good skills in all competences, where my specialities are within chemical analyses (micro- and macro components), biochemical analyses (enzyme activity and respirometry), imaging, spectroscopy (NIR and Raman) and food texture. We are particular good in carotenoid analyses and have in addition several methods for analyses of food pigments, amino acids, ATP-metabolites, biogenic amines, vitamins, antioxidants, and protein denaturation, rancidity, and antioxidant capacity. Infrastructure to be mentioned are UHPLC-DAD, HPLC-DAD-RID-ELSD, GC-FID, DSC, Oroboro, Raman spectrometer, Digyeye, Videometer, Texture analyzer etc.

Jørgen Lerfall is leading the “Food Science” division at the Department of Biotechnology and Food Science, and coordinate the priority area «Optimal utilization of the ocean's natural resources, Optimat» (2015-2023) at the Faculty of Natural Sciences.

 

Teaching:

TMAT1002       Introduction in Food Technology

TMAT3002       Food Technology

YFL8202          Raw material and Product technology – Meat and Fish

TMMT4002       Seafood – Technology and Processing

Scientific, academic and artistic work

Displaying a selection of activities. See all publications in the database

Journal publications

Part of book/report

  • Bar, Eirin Marie Skjøndal; Hoel, Sunniva; Lerfall, Jørgen. (2017) New Product Development - Eirin M. Skjøndal Bar, Sunniva Hoel and Jørgen Lerfall. Trends in Fish Processing Technologies.
  • Lerfall, Jørgen. (2015) Carotenoids: Occurrence, Properties and Determination. Encyclopedia of food and health.
  • Lerfall, Jørgen. (2015) Sodium Nitrite, Salt-Curing and Effects on Carotenoid and N-Nitrosoamines in Marine Foods. Processing and impact on active components in food.

Report/dissertation

  • Lerfall, Jørgen. (2011) Effekt av pankreas sykdom og ulike saltebetingelser på kvaliteten til rå og kaldrøkt Atlantisk laks (Salmo salar L.) / The effect of pancreas disease and salting conditions on the quality of raw and cold-smoked Atlantic salmon (Salmo salar L.). 2011. ISBN 978-82-575-0971-2. Philosophiae Doctor (PhD) Thesis (07).
  • Birkeland, Sveinung; Akse, Leif; Lerfall, Jørgen. (2010) Effekt av rigor status og saltemetode på fargeegenskaper og retensjon av astaxanthin under produksjon og lagring av kaldrøykte laksefileter. 2010. ISBN 978-82-7251-753-2. Nofima rapportserie (8/2010).
  • Lerfall, Jørgen. (2002) Syntetisk kombinasjon av B-apo-8'-karotensyre, Vitamin C, EPA, Trolox og selenafettsyre. 2002.