Browsing Brage NMBU by Author "Afseth, Nils Kristian"
Now showing items 1-20 of 34
-
Assessment of the scalability of a microtiter plate system for screening of oleaginous microorganisms
Kòsa, Gergely; Vuoristo, Kiira; Horn, Svein Jarle; Zimmermann, Boris; Afseth, Nils Kristian; Kohler, Achim; Shapaval, Volha (Journal article; Peer reviewed, 2018) -
Average molecular weight, degree of hydrolysis and dry-film FTIR fingerprint of milk protein hydrolysates: Intercorrelation and application in process monitoring.
Kristoffersen, Kenneth Aase; Afseth, Nils Kristian; Böcker, Ulrike; Lindberg, Diana; Wubshet, Sileshi Gizachhew; de Vogel-vanden Bosch, Heleen; Ruud, Mari Linnea (Peer reviewed; Journal article, 2020)Fourier-transform infrared (FTIR) spectroscopy was applied to predict the degree of hydrolysis (DH%) and weight-average molecular weight (Mw) in milk protein hydrolysates. Both DH% and Mw are important quality parameters ... -
Effects of poultry raw material variation and choice of protease on protein hydrolysate quality
Lindberg, Diana; Kristoffersen, Kenneth Aase; de Vogel-van den Bosch, Heleen; Wubshet, Sileshi Gizachew; Böcker, Ulrike; Rieder, Anne; Fricke, Enno; Afseth, Nils Kristian (Peer reviewed; Journal article, 2021)The aim of this study was to investigate the role of compositional variations in side-streams from the chicken and turkey industry on product characteristics after enzymatic protein hydrolysis (EPH). Variation was obtained ... -
Encoder–decoder neural networks for predicting future FTIR spectra – application to enzymatic protein hydrolysis
Kuchta, Miroslav; Wubshet, Sileshi Gizachew; Afseth, Nils Kristian; Mardal, Kent-Andre; Liland, Kristian Hovde (Peer reviewed; Journal article, 2022)In the process of converting food-processing by-products to value-addedingredients, fine grained control of the rawmaterials, enzymes and process conditionsensures the best possible yield and eco-nomic return. However, ... -
Expanding the analytical toolbox for characterization of proteolytic reactions : advances in FTIR spectroscopy and classical methods
Kristoffersen, Kenneth Aase (PhD Thesis;2019:85, Doctoral thesis, 2019)Enzymatic protein hydrolysis is a well-established industrial process recognized for its potential to improve sustainability in food production by valorization of protein-rich byproducts from the food industry. Monitoring ... -
Exploring dry-film ftir spectroscopy to characterize milk composition and subclinical ketosis throughout a cow’s lactation
Rachah, Amira; Reksen, Olav; Tafintseva, Valeria; Stehr, Felicia Judith Marie; Rukke, Elling-Olav; Prestløkken, Egil; Martin, Adam Dunstan; Kohler, Achim; Afseth, Nils Kristian (Peer reviewed; Journal article, 2021) -
Exploring Dry-Film FTIR Spectroscopy to Characterize Milk Composition and Subclinical Ketosis throughout a Cow’s Lactation
Rachah, Amira; Reksen, Olav; Tafintseva, Valeria; Stehr, Felicia Judith Marie; Rukke, Elling-Olav; Prestløkken, Egil; Martin, Adam Dunstan; Kohler, Achim; Afseth, Nils Kristian (Peer reviewed; Journal article, 2021)The use of technologies for measurements of health parameters of individual cows may ensure early detection of diseases and maximization of individual cow and herd potential. In the present study, dry-film Fourier transform ... -
Factors influencing the processing quality of potatoes : development of analytical tools for process monitoring and optimization
Helgerud, Trygve (PhD Thesis;2015:30, Doctoral thesis, 2017-11-30)Potatoes are notoriously heterogeneous, and manufacturers of processed potato products are therefore faced with a number of challenges during processing. The motivation behind this thesis is to reduce waste and cut production ... -
Fourier transform infrared spectral data as a tool to predict energy balance, energy- and dry matter intake in lactating dairy cows
Rachah, Amira; Reksen, Olav; Afseth, Nils Kristian; Tafintseva, Valeria; Ferneborg, Sabine; Martin, Adam Dunstan; Kohler, Achim; Prestløkken, Egil (Peer reviewed; Journal article, 2020) -
Fourier transform infrared spectroscopy (FTIR) for detection and quantification of milk components for cattle health monitoring
Stehr, Felicia Judith Marie (Master thesis, 2017)Antallet automatiske melkesystemer (AMS-er) har økt jevnt de siste årene på grunn av større besetninger og høyere krav til effektivitet. Med et AMS kan kua velge når og hvor ofte hun vil melkes. Ulike målinger av kua og ... -
Fourier-transform infrared spectroscopy for characterization of liquid protein solutions: A comparison of two sampling techniques
Kafle, Bijay; Böcker, Ulrike; Wubshet, Sileshi Gizachew; Dankel, Elin Katinka; Måge, Ingrid; O'Farrell, Marion; Afseth, Nils Kristian (Peer reviewed; Journal article, 2023) -
Fourier-transform infrared spectroscopy for monitoring proteolytic reactions using dry-films treated with trifluoroacetic acid
Kristoffersen, Kenneth Aase; van Amerongen, Aart; Böcker, Ulrike; Lindberg, Diana; Wubshet, Sileshi Gizachew; de Vogel-van den Bosch, Heleen; Horn, Svein Jarle; Afseth, Nils Kristian (Peer reviewed; Journal article, 2020)In this study we explore the potential of using Fourier-transform infrared (FTIR) spectra of trifluoroacetate-protein and peptide complexes for monitoring proteolytic reactions. The idea of treating dry-films of protein ... -
Fra restmaterialer til verdifulle proteinprodukter
Farstad, Paul (Master thesis, 2016-09-30)Det har i de siste få tiårene vært en økende interesse for bioaktive peptider. Bioaktive peptider er kortere proteinkjeder, som har vist seg for å ha noen gunstige egenskaper. De kan utvinnes fra alt av proteinholdige ... -
From laboratory to industrial use: Understanding process variation during enzymatic protein hydrolysis with dry film fourier-transform infrared spectroscopy
Kafle, Bijay; Måge, Ingrid; Wubshet, Sileshi Gizachew; Dankel, Elin Katinka; Cattaldo, Marco; Böcker, Ulrike; O'Farrell, Marion; Afseth, Nils Kristian (Peer reviewed; Journal article, 2024) -
FTIR-based hierarchical modeling for prediction of average molecular weights of protein hydrolysates
Kristoffersen, Kenneth Aase; Liland, Kristian Hovde; Böcker, Ulrike; Wubshet, Sileshi Gizachhew; Lindberg, Diana; Horn, Svein Jarle; Afseth, Nils Kristian (Journal article; Peer reviewed, 2019)In the presented study, Fourier-transform infrared (FTIR) spectroscopy is used to predict the average molecular weight of protein hydrolysates produced from protein-rich by-products from food industry using commercial ... -
FTIR-based prediction of collagen content in hydrolyzed protein samples
Kristoffersen, Kenneth Aase; Måge, Ingrid; Wubshet, Sileshi Gizachew; Böcker, Ulrike; Riiser Dankel, Katinka; Lislelid, Andreas; Rønningen, Mats Aksnes; Afseth, Nils Kristian (Peer reviewed; Journal article, 2023) -
High-throughput screening of Mucoromycota fungi for production of low- and high-value lipids
Kosa, Gergely; Zimmermann, Boris; Kohler, Achim; Ekeberg, Dag; Afseth, Nils Kristian; Mounier, Jerome; Shapaval, Volha (Journal article; Peer reviewed, 2018) -
Infrarød spektroskopi og størrelsesfordelingskromatografi for analyse av industrielt relevante parametere innen enzymatisk protein hydrolyse
Sebulonsen, Christopher Freidon Alboshokeh (Master thesis, 2020)Matindustrirelevante parametere som grad av hydrolyse (DH %), gjennomsnittlig molekylvekt (Mw) og proteininnhold (Protein %) kan brukes for å effektivisere matproduksjonen, samtidig som det er med på å forbedre opplevelsen ... -
Low salt products Final report
Aursand, Ida Grong; Greiff, Kirsti; Erikson, Ulf Gøran; Gallart-Jornet, Lorena; Perisic, Nebojsa; Kohler, Achim; Afseth, Nils Kristian; Ofstad, Ragni; Storrø, Ivar; Josefsen, Kjell Domaas (Research report, 2014)Salt (NaCl) is the world's most established food additive, because of its excellent preservative effects, the sensorial properties and the increased food processability. In the European countries, 75-80% of salt we consume ... -
Microtiter plate cultivation of oleaginous fungi and monitoring of lipogenesis by high-throughput FTIR spectroscopy
Kosa, Gergely; Kohler, Achim; Tafintseva, Valeria; Zimmermann, Boris; Forfang, Kristin; Afseth, Nils Kristian; Tzimorotas, Dimitrios; Vuoristo, Kiira; Horn, Svein Jarle; Mounier, Jerome; Shapaval, Volha (Journal article; Peer reviewed, 2017)Background Oleaginous fungi can accumulate lipids by utilizing a wide range of waste substrates. They are an important source for the industrial production of omega-6 polyunsaturated fatty acids (gamma-linolenic and ...