R. Olsen

Publications116
h-index31
Citations2,962
Highly Influential Citations152
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Purification and characterization of two trypsin-like enzymes from the digestive tract of anchovy Engraulis encrasicholus.
1. Two trypsin-like enzymes, designated Trypsin A and B, were purified from the pyloric caeca and intestine of anchovy by (NH4)2SO4 fractionation, affinity chromatography (Benzamidine-Sepharose-6B)… Expand
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A limited supply of fishmeal: Impact on future increases in global aquaculture production
The global farming of fish and shellfish has been the fastest growing food producing sector in the last few decades and has become an important industry in many countries. Fishmeal made from pelagic… Expand
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Liquid loss as effected by Post mortem ultrastructural changes in fish muscle : Cod (Gadus morhua L) and Salmon (Salmo salar)
This study was performed in order to assess the effect of early post mortem structural changes in the muscle upon the liquid-holding capacity of wild cod, net-pen-fed cod (fed cod) and farmed salmon.… Expand
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Seasonal variations in chemical and sensory characteristics of farmed and wild Atlantic halibut (Hippoglossus hippoglossus)
Abstract Quality characteristics of farmed and wild halibut from the period of May to December were investigated by measuring liquid-holding capacity, muscle pH, fatty acid (FA) composition and by a… Expand
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Catalytic properties and chemical composition of pepsins from Atlantic cod (Gadus morhua).
1. Three pepsins were purified from the gastric mucosa of Atlantic cod (Gadus morhua). 2. The enzymes, called Pepsin I and Pepsin IIa and b, had isoelectric points 6.9, 4.0 and 4.1, respectively, and… Expand
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Challenges and realistic opportunities in the use of by-products from processing of fish and shellfish
By-products may constitute as much as 70% of fish and shellfish after industrial processing and much focus has been on converting these into commercial products. The aim of this paper is therefore to… Expand
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Purification and some properties of myeloperoxidase and eosinophil peroxidase from human blood.
Myeloperoxidase and eosinophil peroxidase have been isolated from outdated human blood. Peroxidase activity was extracted from washed leucocytes using 0.5 M-CaCl2 and the extract further purified by… Expand
  • 106
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Farmed Atlantic salmon (Salmo salar L.) is a good source of long chain omega‐3 fatty acids
Summary The limited amount of fish oils available has resulted in an increased use of vegetable oils in the feed for farmed fish, such as Atlantic salmon. The aim of this study was to evaluate how… Expand
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Muscle Quality and Storage Stability of Farmed Cod (Gadus morhua L.) Compared to Wild Cod
Abstract Quality characteristics of farmed and wild cod were compared during ice storage by measuring pH, water content, water-holding capacity (WHC), trimethylamine oxide (TMAO), trimethylamine… Expand
  • 25
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Classification of fresh Atlantic salmon (Salmo salar L.) fillets stored under different atmospheres by hyperspectral imaging
Abstract Hyperspectral imaging (HSI) was used to investigate spectroscopic changes in fresh salmon stored under different atmospheres (air, 60% CO 2 /40% N 2 and 90% vacuum) and to determine whether… Expand
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