Ragnar-L.-Olsen

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Professor

Ragnar Ludvig Olsen

Professor
The Norwegian College of Fishery Science




Publications in CRIStin


  • Ageeva, Tatiana Nikolaevna; Olsen, Ragnar Ludvig; Joensen, Sjurdur; Esaiassen, Margrethe. Effects of long-term feed deprivation on the development of rigor mortis and aspects of muscle quality in live-stored mature Atlantic cod (Gadus Morhua L.). Journal of Aquatic Food Product Technology 2018; Volum 27 (4). ISSN 1049-8850.s 477 - 485.s doi: 10.1080/10498850.2018.1448919.

  • Ageeva, Tatiana Nikolaevna; Olsen, Ragnar Ludvig; Joensen, Sjurdur; Esaiassen, Margrethe. Quality aspects of fillet, loin and tail products made from live-stored feed-deprived Atlantic cod (Gadus morhua L.) at different times post mortem. Lebensmittel-Wissenschaft + Technologie 2018; Volum 97. ISSN 0023-6438.s 656 - 661.s doi: 10.1016/j.lwt.2018.06.031.

  • Ageeva, Tatiana Nikolaevna; Jobling, Malcolm; Olsen, Ragnar Ludvig; Esaiassen, Margrethe. Gender-specific responses of mature Atlantic cod (Gadus morhua L.) to feed deprivation. Fisheries Research 2017; Volum 188. ISSN 0165-7836.s 95 - 99.s doi: 10.1016/j.fishres.2016.12.010.

  • Olsen, Ragnar Ludvig; Toppe, Jogeir. Fish silage hydrolysates: Not only a feed nutrient, but also a useful feed additive. Trends in Food Science & Technology 2017; Volum 66. ISSN 0924-2244.s 93 - 97.s doi: 10.1016/j.tifs.2017.06.003.

  • Erdaide, Oihane; Lekube, Xabier; Olsen, Ragnar Ludvig; Ganzedo, Unai; Martinez, iciar. Comparative study of muscle proteins in relation to the development of yake in three tropical tuna species yellowfin (Thunnus albacares), big eye (Thunnus obesus) and skipjack (Katsuwonus pelamis). Food Chemistry 2016; Volum 201. ISSN 0308-8146.s 284 - 291.s doi: 10.1016/j.foodchem.2016.01.059.

  • Lorentzen, Grete Elisabeth; Breiland, Mette Serine Wesmajervi; Østli, Jens; Wang-Andersen, Jarle; Olsen, Ragnar Ludvig. Growth of halophilic microorganisms and histamine content in dried salt-cured cod (Gadus morhua L.) stored at elevated temperature. Lebensmittel-Wissenschaft + Technologie 2015; Volum 60 (1). ISSN 0023-6438.s 598 - 602.s doi: 10.1016/j.lwt.2014.08.035.

  • Pedersen, Alice Marie; Vang, Birthe; Olsen, Ragnar Ludvig. Oil from calanus finmarchicus - Composition and possible use: A review. Journal of Aquatic Food Product Technology 2014; Volum 23 (6). ISSN 1049-8850.s 633 - 646.s doi: 10.1080/10498850.2012.741662.

  • Pedersen, Alice Marie; Salma, Wahida; Höper, Anje Christina; Larsen, Terje; Olsen, Ragnar Ludvig. Lipid profile of mice fed a high-fat diet supplemented with a wax ester-rich marine oil. European Journal of Lipid Science and Technology 2014; Volum 116 (12). ISSN 1438-7697.s 1718 - 1726.s doi: 10.1002/ejlt.201400052.

  • Hofer, Tim; Jørgensen, Trond Ø.; Olsen, Ragnar Ludvig. Comparison of Food antioxidants and Iron Chelators in Two Cellular Free Radical Assays: Strong Protection by Luteolin. Journal of Agricultural and Food Chemistry 2014; Volum 62 (33). ISSN 0021-8561.s 8402 - 8410.s doi: 10.1021/jf5022779.

  • Aune, Tone Friis; Olsen, Ragnar Ludvig; Akse, Leif; Ytterstad, Elinor; Esaiassen, Margrethe. Influence of different cold storage temperatures during the Rigor mortis phase on fillet contraction and longer-term quality changes of Atlantic cod fillets. Lebensmittel-Wissenschaft + Technologie 2014; Volum 59 (1). ISSN 0023-6438.s 583 - 586.s doi: 10.1016/j.lwt.2014.04.018.

  • Olsen, Ragnar Ludvig; Toppe, Jogeir; Karunasagar, Iddya. Challenges and realistic opportunities in the use of by-products from processing of fish and shellfish. Trends in Food Science & Technology 2014; Volum 36. ISSN 0924-2244.s 144 - 151.s doi: 10.1016/j.tifs.2014.01.007.

  • Vang, Birthe; Pedersen, Alice; Olsen, Ragnar Ludvig. Oil extraction From the Copepod Calanus finmarchicus Using Proteolytic Enzymes. Journal of Aquatic Food Product Technology 2013; Volum 22 (6). ISSN 1049-8850.s 619 - 628.s doi: 10.1080/10498850.2012.686008.

  • Vang, Birthe; Mæhre, Hanne K; Jensen, Ida-Johanne; Olsen, Ragnar Ludvig. Detection of tropomyosin and determination of proteins in crustacean oils. Food Chemistry 2013; Volum 141 (1). ISSN 0308-8146.s 72 - 76.s doi: 10.1016/j.foodchem.2013.02.125.

  • Sone, Izumi; Olsen, Ragnar Ludvig; Sivertsen, Agnar Holten; Eilertsen, Guro; Heia, Karsten. Classification of fresh Atlantic salmon (Salmo salar L.) fillets stored under different atmospheres by hyperspectral imaging. Journal of Food Engineering 2012; Volum 109 (3). ISSN 0260-8774.s 482 - 489.s doi: 10.1016/j.jfoodeng.2011.11.001.

  • Sone, Izumi; Olsen, Ragnar Ludvig; Heia, Karsten. Spectral Changes of Atlantic Salmon (Salmo solar L.) Muscle during Cold Storage As Affected by the Oxidation State of Heme. Journal of Agricultural and Food Chemistry 2012; Volum 60 (38). ISSN 0021-8561.s 9719 - 9726.s doi: 10.1021/jf302505y.

  • Olsen, Ragnar Ludvig; Hasan, Mohammad R.. A limited supply of fishmeal: Impact on future increases in global aquaculture production. Trends in Food Science & Technology 2012; Volum 27 (2). ISSN 0924-2244.s 120 - 128.s doi: 10.1016/j.tifs.2012.06.003.

  • Jensen, Ida-Johanne; Mæhre, Hanne K; Tømmerås, Siri; Eilertsen, Karl-Erik; Olsen, Ragnar Ludvig; Elvevoll, Edel Oddny. Farmed Atlantic salmon (Salmo salar L.) is a good source of long chain omega-3 fatty acids. Nutrition Bulletin 2012; Volum 37. ISSN 1471-9827.s 25 - 29.s doi: 10.1111/j.1467-3010.2011.01941.x.

  • Wang, Pål Anders; Vang, Birthe; Pedersen, Alice Marie; Martinez, Iciar; Olsen, Ragnar Ludvig. Post-mortem degradation of myosin heavy chain in intact fish muscle: Effects of pH and enzyme inhibitors. Food Chemistry 2011; Volum 124 (3). ISSN 0308-8146.s 1090 - 1095.s doi: 10.1016/j.foodchem.2010.07.093.

  • Lorentzen, Grete Elisabeth; Mennen, Saskia; Olsen, Ragnar Ludvig; Skjerdal, Taran. Invasiveness of Listeria monocytogenes strains of Caco-2 cells in response to a period of extreme salt stress reflecting salt-curing and rehydration of cod (Gadus morhua L.). Food Control 2011; Volum 22 (7). ISSN 0956-7135.s 1040 - 1045.s doi: 10.1016/j.foodcont.2010.12.013.

  • Hofer, Tim; Eriksen, Tonje Engevik; Hansen, Espen; Varmedal, Ingrid; Jensen, Ida-Johanne; Hammer-Andersen, Jeanette; Olsen, Ragnar Ludvig. Cellular and chemical assays for discovery of novel antioxidants in marine organisms. Humana Press 2011 ISBN 9781607619550.

  • Herland, Hilde; Cooper, Marie; Esaiassen, margrethe; Olsen, Ragnar Ludvig. Effects of Dietary Mineral Supplementation on Quality of Fresh and Salt-Cured Fillets from Farmed Atlantic Cod, Gadus morhua. Journal of the World Aquaculture Society 2011; Volum 42 (2). ISSN 0893-8849.s 261 - 267.s doi: 10.1111/j.1749-7345.2011.00462.x.

  • Sone, Izumi; Olsen, Ragnar Ludvig; Dahl, Reidun Wenche; Heia, Karsten. Visible/Near-Infrared Spectroscopy Detects Autolytic Changes during Storage of Atlantic Salmon (Salmo salar L.). Journal of Food Science 2011; Volum 76 (3). ISSN 0022-1147.s S203 - S209.s doi: 10.1111/j.1750-3841.2011.02062.x.

  • Cooper, Marie; Olsen, Ragnar Ludvig; Seliussen, Jørgen; Gannefors, Charlotte. Dietary Trace Metal Supplements Promote Blood Vessel Melanosis in Fillets of Juvenile Farmed Atlantic Cod, Gadus morhua L. Journal of the World Aquaculture Society 2011; Volum 42 (2). ISSN 0893-8849.s 222 - 229.s doi: 10.1111/j.1749-7345.2011.00458.x.

  • Martinez, iciar; Wang, Pål Anders; Slizyte, Rasa; Jorge, Alberto; Dahle, Stine Veronica Wiborg; Canas, Benito; Yamashita, Michiaki; Olsen, Ragnar Ludvig; Erikson, Ulf Gøran. Protein expression and enzymatic activities in normal and soft textured Atlantic salmon (Salmo salar) muscle. Food Chemistry 2011; Volum 126 (1). ISSN 0308-8146.s 140 - 148.s doi: 10.1016/j.foodchem.2010.10.090.

  • Lorentzen, Grete Elisabeth; Ytterstad, Elinor; Olsen, Ragnar Ludvig; Skjerdal, Taran. Thermal inactivation and growth potential of Listeria innocua in rehydrated salt-cured cod prepared for ready-to-eat products. Food Control 2010; Volum 21 (8). ISSN 0956-7135.s 1121 - 1126.s doi: 10.1016/j.foodcont.2010.01.306.

  • Hofer, Tim; Olsen, Ragnar Ludvig. Cellebasert metode for måling av lipidperoksidasjon og antioksidantaktivitet. Bioingeniøren 2010; Volum 10. ISSN 0801-6828.s 6 - 12.

  • Felberg, Hanne Solvang; Hagen, Lars; Slupphaug, Geir; Batista, Irineu; Nunes, Maria Leonora; Olsen, Ragnar Ludvig; Martinez, iciar. Partial characterisation of gelatinolytic activities in herring (Clupea harengus) and sardine (Sardina pilchardus) possibly involved in post-mortem autolysis of ventral muscle. Food Chemistry 2010; Volum 119 (2). ISSN 0308-8146.s 675 - 683.s doi: 10.1016/j.foodchem.2009.07.012.

  • Lorentzen, Grete Elisabeth; Olsen, Ragnar Ludvig; Bjørkevoll, Ingebrigt; Mikkelsen, Helene Viktoria; Skjerdal, Taran. Survival of Listeria innocua and Listeria monocytogenes in muscle of cod (Gadus morhua L.) during salt-curing and growth during chilled storage of rehydrated product. Food Control 2010; Volum 21 (3). ISSN 0956-7135.s 292 - 297.s doi: 10.1016/j.foodcont.2009.06.012.

  • Herland, Hilde; Esaiassen, margrethe; Cooper, Marie; Olsen, Ragnar Ludvig. Quality of farmed Atlantic cod: effects of season and storage. Aquaculture Research 2010; Volum 41 (8). ISSN 1355-557X.s 1203 - 1210.s doi: 10.1111/j.1365-2109.2009.02407.x.

  • Felberg, Hanne Solvang; Slizyte, Rasa; Mozuraityte, Revilija; Dahle, Stine Veronica Wiborg; Olsen, Ragnar Ludvig; Martinez, iciar. Proteolytic activities of ventral muscle and intestinal content of North Sea herring (Clupea harengus) with full and emptied stomachs. Food Chemistry 2009; Volum 116. ISSN 0308-8146.s 40 - 46.

  • Wang, Pål Anders; Martinez, Iciar; Olsen, Ragnar Ludvig. Myosin heavy chain degradation during post mortem storage of Atlantic cod (Gadus morhua L.). Food Chemistry 2009; Volum 115 (4). ISSN 0308-8146.s 1228 - 1233.s doi: 10.1016/j.foodchem.2009.01.031.

  • Felberg, Hanne Solvang; Slizyté, Rasa; Mozuraityte, Revilija; Dahle, Stine Wiborg; Olsen, Ragnar Ludvig; Martinez, iciar. Proteolytic activities of ventral muscle and intestinal content of North sea herring (Clupea harengus) with full and emptied stomachs. Food Chemistry 2009; Volum 116 (1). ISSN 0308-8146.s 40 - 46.s doi: 10.1016/j.foodchem.2009.02.001.

  • Herland, Hilde; Esaiassen, margrethe; Cooper, Marie; Olsen, Ragnar Ludvig. Changes in trimethylamine oxide and trimethylamine in muscle of wild and farmed cod(Gadus morhua) during iced storage. Aquaculture Research 2009; Volum 41 (1). ISSN 1355-557X.s 95 - 102.s doi: 10.1111/j.1365-2109.2009.02309.x.

  • Leroi, F; Jofftaud, J.J.; Arboleya, J.C.; Amarita, F.; Cruz, Z.; Izurieta, E.; Lasagabaster, A.; Martinez de Maranon, I.; Miranda, I.; Nuin, M.; Olabarrieta, I.; Lauzon, H.L.; Lorentzen, G.; Bjørkevoll, I.; Olsen, Ragnar Ludvig; Pilet, M.F.; Prevost, H.; Dousset, X.; Matamoros, S.; Skjerdal, T.. Hurdle technology to ensure the safety of seafood products. Woodhead Publishing Limited 2008 ISBN 978-1-84569-019-9.s 399 - 425.

  • Wang, Pål Anders; Stenvik, Jørgen; Larsen, Rannveig; Mæhre, Hanne K; Olsen, Ragnar Ludvig. Cathepsin D from Atlantic cod (Gadus morhua L.) liver. Isolation and comparative studies. Comparative Biochemistry and Physiology - Part B: Biochemistry & Molecular Biology 2007; Volum 147. ISSN 1096-4959.s 504 - 511.s doi: 10.1016/j.cbpb.2007.03.004.

  • Olsson, Gunn Berit; Seppola, Magnus A.; Olsen, Ragnar Ludvig. Water-holding capacity of wild and farmed cod (Gadus morhua) and haddock (Melanogrammus aeglefinus) muscle during ice storage. Lebensmittel-Wissenschaft + Technologie 2007; Volum 40. ISSN 0023-6438.s 793 - 799.s doi: 10.1016/j.lwt.2006.04.004.

  • Hannesson, Kirsten; Tingbø, Monica Gausdal; Olsen, Ragnar Ludvig; Enersen, Grethe; Bævre, Anne Birgit; Ofstad, Ragni. An immunological study of glycosaminoglycans in the connective tissue of bovine and cod skeletal muscle. Comparative Biochemistry and Physiology - Part B: Biochemistry & Molecular Biology 2007; Volum 146. ISSN 1096-4959.s 512 - 520.s doi: 10.1016/j.cbpb.2006.11.024.

  • Kristoffersen, Silje; Vang, Birthe; Larsen, Rune; Olsen, Ragnar Ludvig. Pre-rigor filleting and drip loss from fillets of farmed Atlantic cod (Gadus morhua L.). Aquaculture Research 2007; Volum 38 (16). ISSN 1355-557X.s 1721 - 1731.s doi: 10.1111/j.1365-2109.2007.01843.x.

  • Herland, Hilde; Esaiassen, Margrethe; Olsen, Ragnar Ludvig. Muscle quality and storage stability of farmed cod (Gadus morhua L.) compared to wild cod. Journal of Aquatic Food Product Technology 2007; Volum 16 (4). ISSN 1049-8850.s 55 - 65.s doi: 10.1300/J030v16n04_06.

  • Kristoffersen, Silje; Tobiassen, Torbjørn; Esaiassen, Margrethe; Olsson, Gunn Berit; Godvik, Lars Andre; Seppola, Magnus A.; Olsen, Ragnar Ludvig. Effects of pre-rigour filleting on quality aspects of Atlantic cod (Gadus morhua L.). Aquaculture Research 2006; Volum 37. ISSN 1355-557X.s 1556 - 1564.

  • Kristoffersen, Silje; Tobiassen, Torbjørn; Steinsund, Victoria; Olsen, Ragnar Ludvig. Slaughter stress, postmortem muscle pH and rigor development in farmed Atlantic cod (Gadus morhua L.). International journal of food science & technology 2006; Volum 41 (7). ISSN 0950-5423.s 861 - 864.s doi: 10.1111/j.1365-2621.2005.01149.x.

  • Ofstad, Ragni; Olsen, Ragnar Ludvig; Taylor, Richard; Hannesson, Kirsten. Breakdown of intramuscular connective tissue in cod (Gadus morhua L.) and spotted wolffish (Anarhichas minor O.) related to gaping. Lebensmittel-Wissenschaft + Technologie 2006; Volum 39. ISSN 0023-6438.s 1143 - 1154.s doi: 10.1016/j.lwt.2005.06.019.

  • Pedersen, Guro M; Johansen, Audny; Olsen, Ragnar Ludvig; Jørgensen, Jorunn B. Stimulation of type I IFN activity in Atlantic salmon (Salmo salar L.)leukocytes: Synergistic effects of cationic proteins and CpG ODN. Fish and Shellfish Immunology 2006; Volum 20 (4). ISSN 1050-4648.s 503 - 518.s doi: 10.1016/j.fsi.2005.06.009.

  • Lodemel, JB; Lødemel, Jørgen Blikra; Egge-Jacobsen, Wolfgang; Olsen, Ragnar Ludvig. Detection of TIMP-2-like protein in Atlantic cod (Gadus morhua) muscle using two-dimensional real-time reverse zymography. Comparative Biochemistry and Physiology - Part B: Biochemistry & Molecular Biology 2004; Volum 139. ISSN 1096-4959.s 253 - 259.

  • Lauritzsen, Kristin; Akse, Leif; Gundersen, Bjørn; Olsen, Ragnar Ludvig. Effects of calcium, magnesium and pH during salt curing of cod (Gadus morhua L). Journal of the Science of Food and Agriculture 2004; Volum 84. ISSN 0022-5142.s 683 - 692.

  • Lauritzsen, Kristin; Olsen, Ragnar Ludvig. Effects of antioxidants on copper induced lipid oxidation during salting of cod (Gadus morhua L.). Journal of Food Lipids 2004; Volum 11. ISSN 1065-7258.s 105 - 122.

  • Lauritzsen, Kristin; Akse, Leif; Gundersen, Bjørn; Olsen, Ragnar Ludvig. Effects of calcium, magnesium and pH during salt curing of cod (Gagus morhua L). Journal of the Science of Food and Agriculture 2004; Volum 84. ISSN 0022-5142.s 683 - 692.s doi: 10.1002/jsfa.1697.

  • Bjørkevoll, Ingebrigt; Olsen, Jan-Vidar; Olsen, Ragnar Ludvig. Rehydration of salt-cured cod using injection and tumbling technologies. Food Research International 2004; Volum 37. ISSN 0963-9969.s 925 - 931.s doi: 10.1016/j.foodres.2004.06.002.

  • Lauritzsen, Kristin; Akse, Leif; Johansen, Arvid; Joensen, Sjurdur; Sørensen, Nils Kristian; Olsen, Ragnar Ludvig. Physical and quality attributes of salted cod (Gadus morhua L.) as affected by the state of rigor and freezing prior to salting. Food Research International 2004; Volum 37. ISSN 0963-9969.s 677 - 688.

  • Pedersen, Guro M.; Gildberg, Asbjørn; Olsen, Ragnar Ludvig. Effects of including cationic proteins from cod milt in the feed to Atlantic cod (Gadus morhua) fry during a challenge trial with Fibrio anguillarum. Aquaculture 2004; Volum 233. ISSN 0044-8486.s 31 - 43.s doi: 10.1016/j.aquaculture.2003.09.026.

  • Lødemel, Jørgen Blikra; Mæhre, Hanne K.; Winberg, Jan-Olof; Olsen, Ragnar Ludvig. Tissue distribution, inhibition and activation of gelatinolytic activities in Atlantic cod (Gadus morhua). Comparative Biochemistry and Physiology - Part B: Biochemistry & Molecular Biology 2004; Volum 137. ISSN 1096-4959.s 363 - 371.

  • Pedersen, Guro M.; Gildberg, Asbjørn; Steiro, Kari; Olsen, Ragnar Ludvig. Histone-like proteins from Atlantic cod milt: Stimulatory effect on Atlantic salmon leucocytes in vivo and in vitro. Comparative Biochemistry and Physiology - Part B: Biochemistry & Molecular Biology 2003; Volum 134. ISSN 1096-4959.s 407 - 416.s doi: 10.1016/S1096-4959(02)00230-0.

  • Bjørkevoll, Ingebrigt; Olsen, Ragnar Ludvig; Skjerdal, Olaug Taran. Origin and and spoilage potential of the microbiota dominating genus Psychrobacter in sterile rehydrated salt-cured and dried salt-cured cod (Gadus morhua). International Journal of Food Microbiology 2003; Volum 84. ISSN 0168-1605.s 175 - 187.

  • Olsson, Gunn Berit; Ofstad, Ragni; Lødemel, Jørgen Blikra; Olsen, Ragnar Ludvig. Changes in water-holding capacity of halibut muscle during cold storage. Lebensmittel-Wissenschaft + Technologie 2003; Volum 36. ISSN 0023-6438.s 771 - 778.s doi: 10.1111/j.1745-4573.2003.tb00708.x.

  • Bjørkevoll, Ingebrigt; Olsen, Ragnar Ludvig; Skjerdal, Olaug Taran. Origin and spoilage potential of the microbiota dominating genus Psychrobacter in sterile rehydrated salt-cured and dried salt-cured cod (Gadus morhua). International Journal of Food Microbiology 2003; Volum 84. ISSN 0168-1605.s 175 - 187.s doi: 10.1016/S0168-1605(02)00418-X.

  • Lødemel, Jørgen Blikra; Olsen, Ragnar Ludvig. Gelatinolytic activities in muscle of Atlantic cod (Gadus morhua), spotted wolffish (Anarhichas minor) and Atlantic salmon (Salmo salar). Journal of the Science of Food and Agriculture 2003; Volum 83. ISSN 0022-5142.s 1031 - 1036.

  • Olsson, Gunn Berit; Olsen, Ragnar Ludvig; Ofstad, Ragni. Post-mortem structural characteristics and water-holding capacity in Atlantic halibut muscle. Lebensmittel-Wissenschaft + Technologie 2003; Volum 36. ISSN 0023-6438.s 125 - 133.s doi: 10.1016/S0023-6438(02)00205-0.

  • Olsson, Gunn Berit; Olsen, Ragnar Ludvig; Carlehög, Mats; Ofstad, Ragni. Seasonal variations in chemical and sensory characteristics of farmed and wild Atlantic halibut (Hippoglossus hippoglossus). Aquaculture 2003; Volum 217. ISSN 0044-8486.s 191 - 205.s doi: 10.1016/S0044-8486(02)00191-6.

  • Nilsen, Inge Waller; Øverbø, Kersti; Olsen, Ragnar Ludvig. Thermolabile alkaline phosphatase from Northern shrimp (Pandalus borealis): protein and cDNA sequence analyses. Comparative Biochemistry and Physiology - Part B: Biochemistry & Molecular Biology 2001; Volum 129 (4). ISSN 1096-4959.s 853 - 861.s doi: 10.1016/S1096-4959(01)00391-8.

  • Esaiassen, Margrethe; Myrnes, Bjørnar; Olsen, Ragnar Ludvig. Isolation and substrate specificities of five chitinases from the hepatopancreas of Northern shrimp, Pandalus borealis. Comparative Biochemistry and Physiology - Part B: Biochemistry & Molecular Biology 1996; Volum 113B (4). ISSN 1096-4959.s 717 - 723.

  • Esaiassen, Margrethe; Øverbø, Kersti; Olsen, Ragnar Ludvig. Analysis of N-acetyl-chitooligasaccharides by the Iatroscan TLC/FID system. Carbohydrate Research 1995; Volum 273. ISSN 0008-6215.s 77 - 81.

  • Esaiassen, Margrethe; Myrnes, Bjørnar; Olsen, Ragnar Ludvig. Purification and some properties of two -N-acetylhexosaminidases from the hepatopancreas of Northern shrimp, Pandalus borealis. Comparative Biochemistry and Physiology - Part B: Biochemistry & Molecular Biology 1992; Volum 101. ISSN 1096-4959.s 513 - 517.

  • Martinez, iciar; Christiansen, Jørgen Schou; Ofstad, Ragni; Olsen, Ragnar Ludvig. Comparison of myosin isoenzymes present in skeletal and cardiac muscles of Arctic charr Salvelinus alpinus (L.) Sequential expression of different myosin heavy chains during development of the fast white skeletal muscle. European Journal of Biochemistry 1991; Volum 195. ISSN 0014-2956.s 743 - 753.s doi: 10.1111/j.1432-1033.1991.tb15762.x.

  • Olsen, Ragnar Ludvig. Lønnsom utnyttelse av marine restråstoffer - nå og i framtida. Faroexpo 2018-10-24 - 2018-10-26 2018.

  • Olsen, Ragnar Ludvig. Calanus finmarchicus - Harvest, processing and properties of products. The Future Potential of Zooplankton and Meopelagic Species 2018-10-01 - 2018-10-02 2018.

  • Ageeva, Tatiana Nikolaevna; Esaiassen, Margrethe; Olsen, Ragnar Ludvig. Live-Storage of Wild mature cod (Gadus morhua L.) without feed supply. Effects on biological and quality Properties. a dissertation for the degree of Philosophiae Doctor. 2018 (-) ISBN 978-82-8266-158-4.

  • Olsen, Ragnar Ludvig. Oppdrettslaks som mat - nok næringsstoffer?. Tore Vorren seminaret 2018-03-14 - 2018-03-14 2018.

  • Olsen, Ragnar Ludvig. Norges fiskerihøgskole - Samarbeid mellom studenter og næringsliv. Nor-Fishing, Trondheim 2018-08-24 - 2018-08-24 2018.

  • Guldberg, Mia Brattli; Olsen, Ragnar Ludvig. Isolering av etylester og triacylglycerol ved hjelp av fast fase ekstraksjon.. 2018.

  • Toppe, Jogeir; Olsen, Ragnar Ludvig; Peñarubia, Omar R.; James, David G.. Production and utilization of fish silage. A manual on how to turn fish waste into profit and a valuable feed ingredient or fertilizer.. 2018 ISBN 978-92-5-130590-4.

  • Olsen, Ragnar Ludvig. Lipidkjemi - med vekt på fisk, 4 utg.. 2017.

  • Sjøvoll, Anja; Pedersen, Alice Marie; Olsen, Ragnar Ludvig. Lipids in the press cake obtained during the production of oil from Calanus finmarchicus. The 8th International Conference on Marine Biotechnology 2017-03-08 - 2017-03-10 2017.

  • Udin, Therese Christina; Pedersen, Alice Marie; Olsen, Ragnar Ludvig. Proteins and chitin in the press cake from production of oil from the copepod Calanus finmarchicus. The 8th International Conference on Marine Biotechnology 2017-03-08 - 2017-03-10 2017.

  • Olsen, Ragnar Ludvig. Biprodukter fra fiskeri- og havbruksnæringen: Er produksjon av biogass et alternativ?. Potensiale for industriell symbiose 2017-05-31 - 2017-05-31 2017.

  • Skjold, Vetle; Olsen, Ragnar Ludvig. Måling av pH i pre-rigor fiskemuskel - en analytisk utfordring. 2017.

  • Frederic, Hovind kvamme; Olsen, Ragnar Ludvig. Egenskaper til konservert grakse fra tranproduksjon basert på isoelektrisk utfelling. 2017.

  • Nicklaes, Damkær Thomsen; Olsen, Ragnar Ludvig. Kvalitet av vedlikeholdsfôret levendelagret torsk sultet i opptil 12 uker. 2017.

  • Therese Christina, Udin; Olsen, Ragnar Ludvig. Protein og kitin i grakse fra produksjon av Calanus olje. 2017.

  • Sjøvoll, Anja; Olsen, Ragnar Ludvig. Biokjemiske egenskaper til grakse fra produksjon av Calanus olje. 2017.

  • Olsen, Ragnar Ludvig. Havet og fremtidens mat. Fagforeningskonferanse 2017-11-09 - 2017-11-09 2017.

  • Olsen, Ragnar Ludvig. What are the options for marine biomass when it is not suitable as food?. The 8th International Conference on Marine Biotechnology 2017-03-08 - 2017-03-10 2017.

  • Olsen, Ragnar Ludvig. Slog og restråstoff blir til gull?. Husøydagan 2016-08-19 - 2016-08-19 2016.

  • Olsen, Ragnar Ludvig. Realistiske muligheter for utnyttelse av restråstoffer fra foredling av hvitfisk. Oppstartsmøte Råstoff og kompetanse 2016-08-25 - 2016-08-25 2016.

  • Olsen, Ragnar Ludvig. Havet og fremtidens mat. East-West Arena 2016-10-18 - 2016-10-19 2016.

  • Habbestad Andersen, Andreas; Olsen, Ragnar Ludvig. Frie fettsyrer i olje utvunnet fra ensilert lakseslo. 2016.

  • Halldórson, Snorri; Olsen, Ragnar Ludvig. Utilization of cod backbones. 2016.

  • Vang, Birthe; Olsen, Ragnar Ludvig. Recovery and properties of oil from the copepod Calanus finmarchicus. 2016 ISBN 978-82-8266-110-2.

  • Pedersen, Alice Marie; Olsen, Ragnar Ludvig. Calanus Oil. Utilization, composition and digestion.. 2016 ISBN 978-82-8266-117-1.

  • Olsen, Ragnar Ludvig; Elvevoll, Edel Oddny. Sjømat og helse - og noen nyheter om mattrygghet. Lørdagsuniversitetet i Tromsø 2015-02-28 - 2015-02-28 2015.

  • Ageeva, Tatiana Nikolaevna; Joensen, Sjurdur; Olsen, Ragnar Ludvig; Esaiassen, Margrethe. Levendelagret torsk og filetkvalitet. Workshop 2015-12-02 - 2015-12-02 2015.

  • Olsen, Ragnar Ludvig. Challenges and possibilities in use of by-Products from Processing of Fish and shellfish. Transatlantic Science week. Blue futures 2015-11-04 - 2015-11-06 2015.

  • Ageeva, Tatiana Nikolaevna; Olsen, Ragnar Ludvig; Joensen, Sjurdur; Olsen, Stein Harris; Esaiassen, Margrethe. Live Storage of Atlantic cod (Gadus morhua L.) without feeding – effects on fillet quality. TAFT 2015 5th Trans-Atlantic Fisheries Technology conference (fulltekst) 2015-10-13 - 2015-10-15 2015.

  • Dalheim, Lars; Olsen, Ragnar Ludvig. Trans isomers of EPA and DHA in refining and concentration of fish oils. 2015.

  • Olsen, Terje Antero; Olsen, Ragnar Ludvig. Triploid Laks- Produktegenskaper og omdømmeperspektiver. 2015.

  • Olsen, Ragnar Ludvig. Hvordan samarbeide med UiT?. Aqua Nor, Trondheim 2015-08-19 - 2015-08-19 2015.

  • Olsen, Ragnar Ludvig. Er det farlig å spise oppdrettslaks?. Forskningsdagene i Sør-Tromsø 2015-09-19 - 2015-09-19 2015.

  • Olsen, Ragnar Ludvig. Fiskeoppdrett og fôr - er det uetisk å fore oppdrettsfisk med fisk?. Foredrag for lærere i grunnskolen 2015-03-24 - 2015-03-24 2015.

  • Olsen, Ragnar Ludvig; Elvevoll, Edel Oddny. Sjømat og helse - og noen nyheter om mattrygghet. Lørdagsuniversitet på Finnsnes 2015-03-07 - 2015-03-07 2015.

  • Olsen, Ragnar Ludvig. Wasted potential? FAO review highlights food and feed uses for fish and shellfish by-products. FOOD navigator.com, 15.sept. 2014.

  • Hofer, Tim; Jørgensen, Trond Ø.; Olsen, Ragnar Ludvig. Antioxidant protection from intracellular free radicals and lipid peroxidation in two microplate format cellular assays. HNE Club Satellite meeting, Food and health Symposium and Cost Action 2014-09-08 - 2014-09-10 2014.

  • Olsen, Ragnar Ludvig. Frie fettsyrer i olje fra ensilert lakseslo. Foredrag for bedriften Hordafor AS, Austevoll, Hordaland 2014-12-11 - 2014-12-11 2014.

  • Olsen, Ragnar Ludvig. Utnyttelse av biprodukter fra foredling av fisk og skalldyr - utfordringer og realistiske muligheter. Maring fagdag 2014-11-27 - 2014-11-27 2014.

  • Zaytseva, Anastasia; Olsen, Ragnar Ludvig. Composition and quality of marine Omega-3 supplements on the Russian and Norwegian markets: A comparative study. 2014.

  • Joensen, Joan Karl; Olsen, Ragnar Ludvig. Effekt av fileterings- og frysetidspunkt på kvalitet av ferske og tinte pre-rigor produserte laksefileter. 2014.

  • Ageeva, Tatiana Nikolaevna; Olsen, Ragnar Ludvig. Sammenlignende in vitro fordøyelse av fiskemuskel og kjøtt. 2014.

  • Didriksen, Jan Tore; Olsen, Ragnar Ludvig. Frysing av pre-rigor produserte torskefileter. Effekt på rigorkontraksjon, pH-utvikling og vekttap etter tining. 2013.

  • Vang, Birthe; Mæhre, Hanne K; Jensen, Ida-Johanne; Olsen, Ragnar Ludvig. Tropomyosin allergen may be present in commercial crustacean oils. The 6th. International Conference on Marine Bioprospecting 2013-02-20 - 2013-02-22 2013.

  • Huang, Tien-Sheng; Eilertsen, Hans Christian; Olsen, Ragnar Ludvig; Hofer, Tim; Jørgensen, Trond Ø.. Antioxidant property of the Arctic microalgae Attheya longicornis and Pyramimoras sp. upon abiotic stress from metal and UV radiation. The 6th International Conference on Marine Bioprospecting 2013-02-20 - 2013-02-22 2013.

  • Olsen, Ragnar Ludvig. Er oppdrettslaks sunn?. Tekna samling 2013-10-23 - 2013-10-23 2013.

  • Olsen, Ragnar Ludvig. Fiskerikandidatstudiet før og nå. Reunion kull- 96 2013-10-04 - 2013-10-04 2013.

  • Olsen, Ragnar Ludvig. Challenges and realistic use of by-products from processing of fish - a global view. 43. WEFTA Meeting 2013-10-09 - 2013-10-11 2013.

  • Pedersen, Alice Marie; Salma, Wahida; Höper, Anje Christina; Larsen, Terje; Olsen, Ragnar Ludvig. Digestion and absorption of marine wax esters as a dietary supplement. 27th Nordic Lipidforums Symposium 2013-06-17 - 2013-06-19 2013.

  • Pedersen, Alice Marie; Höper, Anje Christina; Salma, Wahida; Larsen, Terje; Olsen, Ragnar Ludvig. Digestion and absorption of Calanus Oil. BIOPROSP_13 2013-02-20 - 2013-02-22 2013.

  • Ringø, Einar; Jørgensen, Jorunn B; Olsen, Ragnar Ludvig; Stensvåg, Klara. Advances and prospects of biotechnology in aquaculture. Symposium 2013-07-22 - 2013-07-26 2013.

  • Sone, Izumi; Olsen, Ragnar Ludvig; Heia, Karsten. Effects of heme oxidation states on spectral variations of Atlantic slmon (Salmo salar L.) during cold storage. TAFT 2012-10-30 - 2012-11-02 2012.

  • Aune, Tone Friis; Esaiassen, margrethe; Akse, Leif; Ytterstad, Elinor; Olsen, Ragnar Ludvig. Pre rigor produced fillets of Atlantic cod (Gadus morhua L.) show no cold shortening. TAFT 2012-10-30 - 2012-11-02 2012.

  • Vang, Birthe; Pedersen, Alice Marie; Olsen, Ragnar Ludvig. Enzymatic oil extraction from the copepod Calanus finmarchicus. Euro Lipid Fed Congress 2012-09-23 - 2012-09-26 2012.

  • Cancio, Ibo; Diaz de Cerio, O; Rojo-Bartolomé, I; Bizzaro, C; Ortiz-Zarragoitia, Maren; Wang, PA; Olsen, Ragnar Ludvig; Erikson, Ulf Gøran; Martinez, Iciar. Identification of biomarkers for sex and fecundity and skeletal muscle texture in teleost fish. World Aquaculture Society 2012-09-01 - 2012-09-05 2012.

  • Sone, Izumi; Olsen, Ragnar Ludvig; Heia, Karsten. Spectral changes in fillet of Atlantic salmon as affected by freshness loss and spoilage during cold storage. 2012 ISBN 978-82-8266-043-3.

  • Stokvik Ovesen, Marte; Svendsen, John Sigurd; Jensen, Einar; Olsen, Ragnar Ludvig. Karakterisering av kommersielle omega-3 produkter og utvikling av en ny metode for separasjon av lipidklasser med fast-fase ekstraksjon. 2012.

  • Brun, Alf Thorstein; Olsen, Ragnar Ludvig; Seternes, Tore. Oksidativ stabilitet til kommersielle fiskeoljeprodukter. 2012.

  • Olsen, Ragnar Ludvig. Vil det være nok fiskefôr til fortsatt vekst innen akvakultur. besøk av representanter for utenriksdepartement 2012-11-19 - 2012-11-19 2012.

  • Olsen, Ragnar Ludvig. Seafood science at the Norwegian College of Fishery Science. Besøk av portugisiske journalister ved Norges fiskerihøgskole 2012-11-07 - 2012-11-07 2012.

  • Olsen, Ragnar Ludvig. Fiskerikandidatstudiet ved NFH - før og nå. 20-års jubileum for kull 1992 fiskerifagstudenter 2012-08-18 - 2012-08-18 2012.

  • Olsen, Ragnar Ludvig. Marin bioteknologi - også 40 år i Tromsø. 40-års jubileum for Fiskerikandidatstudiet 2012-02-17 - 2012-02-17 2012.

  • Oldeide, Linda Agathe; Olsen, Ragnar Ludvig. Bruk av frysebehandling, tilsetjingsstoff eller saltemetodar ved produksjon av saltfisk. verknad på farge og utbytte hos saltmodna og utvatna produkt. 2011.

  • Nicolaisen, Jan Roger; Mæhre, Hanne K; Olsen, Ragnar Ludvig; Martinsen, Tony; Jensen, Einar. Characterization of lipids isolated from Cucumaria frondosa. 14. Norske seminar i massespektrometri 2011-01-23 - 2011-01-26 2011.

  • Wang, Pål Anders; Olsen, Ragnar Ludvig. Post mortem proteolytic degradation of myosin heavy chain in skeletal muscle of Atlantic cod. 2011 ISBN 978-82-8266-005-1.

  • Nicolaisen, Jan Roger; Jensen, Einar; Olsen, Ragnar Ludvig. Lipidklasser og fettsyresammensetning i brunpølse (Cucumaria frondosa). 2011.

  • Tømmerås, Siri; Olsen, Ragnar Ludvig; Elvevoll, Edel Oddny. Fat, fatty acids and fat soluble nutrients in fillet of farmed and wild Atlantic salmon (Salmon salar L.). 2011.

  • Martinez, iciar; Careche, M.; Edvardsen, T.; Sanchez-Alonso, I; Olsen, Ragnar Ludvig; Larsen, Rune; Elvevoll, Edel Oddny. Quality and safety of seafood products for the European consumer - an overview. Aquaculture Europe 2011 2011-10-18 - 2011-10-21 2011.

  • Sone, Izumi; Olsen, Ragnar Ludvig; Sivertsen, Agnar Holten; Eilertsen, Guro; Heia, Karsten. Classification of fresh Atlantic salmon according to the type of atmosphere packaging used during storage. 15th. International Conference on Near infrared Spectroscopy 2011-05-16 - 2011-05-20 2011.

  • Lorentzen, Grete Elisabeth; Mennen, Saskia; Olsen, Ragnar Ludvig; Bjørkevoll, Ingebrigt; Mikkelsen, Helene; Skjerdal, Taran. Food safety of salt-cured products. Effects of salt-curing, rehydration on survival, growth and invasiveness of Listeria spp. 41th. WEFTA Conference, Chalmers 2011-09-27 - 2011-09-30 2011.

  • Sone, Izumi; Olsen, Ragnar Ludvig; Sivertsen, Agnar Holten; Eilertsen, Guro; Heia, Karsten. Use of hyperspectral imaging for classifying fresh salmon (Salmo salar L.)according to the type packaging used during storage. 41th. WEFTA 2011 Conference, Chalmers 2011-09-27 - 2011-09-30 2011.

  • Olsen, Ragnar Ludvig; Elvevoll, Edel O.. Fiskeoppdrett og etikk. Side 3 kronikk i Nordlys 18. februar 2011. Dagavisen Nordlys 2011.s 3 - .

  • Hofer, Tim; Olsen, Ragnar Ludvig. A cellular lipidperoxidation antioxidant activity assay. SFRR/EEMS meeting 2010-09-12 - 2010-09-18 2010.

  • Sone, Izumi; Olsen, Ragnar Ludvig; Dahl, Reidun Wenche; Heia, Karsten. Spectroscopic study of freshness loss and spoilage of Atlantic salmon (Salmo salar L.). WEFTA Conference 2010-10-04 - 2010-10-07 2010.

  • Martinez, iciar; Slizyte, Rasa; Wang, Pål Anders; Jorge, Alberto; Dahle, Stine Veronica Wiborg; Canas, Benito; Yamashita, Michiaki; Olsen, Ragnar Ludvig; Erikson, Ulf Gøran. Higher gelatinase activation and ubiquitination in Atlantic salmon with soft than with firmer muscle. Aquaculture Europe 2010. Annual Meeting of the European Aquaculture Society 2010-10-05 - 2010-10-08 2010.

  • Herland, Hilde; Esaiassen, Margrethe; Cooper, Marie; Olsen, Ragnar Ludvig. Trimethylamine oxide (TMAO) and trimethylamine (TMA) in wild and farmed cod. WEFTA Conference 2010-10-04 - 2010-10-07 2010.

  • Olsen, Ragnar Ludvig. Er det uetisk å bruke fisk som mat til fisk?. Forskningsdagene 2010-09-24 - 2010-09-24 2010.

  • Lorentzen, Grete; Olsen, Ragnar Ludvig. Food safety of salt-cured cod products. Effects of salt-curing, rehydration and thermal treatment on survival, growth and invasiveness of Listeria spp. 2010 ISBN 978-82-8266-001-3.

  • Olsen, Ragnar Ludvig; Elvevoll, Edel Oddny. Fisk - mer enn bare til middag. Side 3 kronikk i Nordlys 26.august 2010. Dagavisen Nordlys 2010.s 3 - 3.

  • Olsen, Ragnar Ludvig. Fisk - mer enn bare middagsmat. Norsk Sjømat 2010 (1). ISSN 0807-1551.s 16 - 17.

  • Pedersen, Renate Birgitte; Olsen, Ragnar Ludvig. Egenskaper til fett i proteinkonsentrat framstilt ved ensilering av biprodukter fra oppdrettet laks og ørret. 2010.

  • Andersen, Toril; Jensen, Einar; Olsen, Ragnar Ludvig. Isolation and characterization of wax esters from Calanus finmarchicus. 2010.

  • Tveter, Ida Giæver; Elvevoll, Edel Oddny; Olsen, Ragnar Ludvig. Marine fosfolipider (MPL) - karakterisering av et nytt produkt på kosttilskuddsmarkedet. 2010.

  • Olsen, Ragnar Ludvig. Is it sustainable to use fish as feed?. The Pelagic Complex in the Northeast Atlantic 2010-09-07 - 2010-09-09 2010.

  • Herland, Hilde; Olsen, Ragnar Ludvig; Cooper, Marie. Effects of dietary minerals supplements on quality of fresh and salt cured fillets from farmed Atlantic cod. 2nd International Feed for Health Conference 2010-06-14 - 2010-06-15 2010.

  • Cooper, Marie; Olsen, Ragnar Ludvig. Beware of unintended consequences: A cautionary tale. 2nd International Feed for Health conference 2010-06-14 - 2010-06-15 2010.

  • Varmedal, Ingrid; Hansen, Espen; Olsen, Ragnar Ludvig; Jørgensen, Trond Ø.; Andersen, Jeanette hammer. Bioactive metabolites in marine sponges. Bioprosp konferansen 2009 2009-02-24 - 2009-02-25 2009.

  • Kristoffersen, Silje; Kristiansen, Frank; Eilertsen, Guro; Olsen, Ragnar Ludvig. Torsk fra merd: Pre-rigor produksjon av loins med skinn. (fulltekst) 2009 (13/2009) ISBN 978-82-7251-677-1. ISSN 1890-579X.

  • Martinez, iciar; Slizyte, Rasa; Wang, Pål Anders; Jorge, Alberto; Dahle, Stine Veronica Wiborg; Canas, Benito; Yamashita, Michiaki; Olsen, Ragnar Ludvig; Erikson, Ulf Gøran. Protein expression and enzymatic activities in Atlantic salmon fillets with different textures. 3rd TAFT conference 2009-09-15 - 2009-09-18 2009.

  • Hofer, Tim; Eriksen, TE; Jensen, Ida-Johanne; Elvevoll, Edel Oddny; Jørgensen, Trond Ø.; Andersen, Jeanette hammer; Olsen, Ragnar Ludvig. Screening for antioxidants in Arctic marine organisms. Free radical research 2009; Volum 43. ISSN 1071-5762.s 75 - 75.

  • Varmedal, Ingrid; Olsen, Ragnar Ludvig. Bioactive molecules extracted from the marine sponge Aplysilla sulfurea and the marine phytoplankton Porosira glacialis. 2009.

  • Johnsen, Thomas; Olsen, Ragnar Ludvig. Slakting og pre-rigor filetering av oppdrettstorsk i industrien. Filetkvalitet og kvalitetsforandringer under islagring av fileter. 2009.

  • Herland, Hilde; Olsen, Ragnar Ludvig. Farmed Atlantic cod (Gadus morhua L.). Fillet quality and quality changes during iced storage. 2009.

  • Felberg, Hanne Solvang; Martinez, Iciar; Olsen, Ragnar Ludvig. Belly bursting in herring (Clupea harengus). A study on some gelatinolytic activities possibly involved in the process. 2009 ISBN 978-82-91086-75-0.

  • Olsen, Ragnar Ludvig. Uppdrag granskning. 2009.

  • Martinez, iciar; Slizyté, Raisa; Wang, Pål Anders; Jorge, Alberto; Dahle, Stine Wiborg; Canas, Benito; Yamashita, Michiaki; Olsen, Ragnar Ludvig; Erikson, Ulf. Protein expression and enzymatic activities in Atlantic salmon fillets with differnt textures. Vitenskapelig konferanse: 3th TAFT Meeting, 2009-09-15 - 2009-09-18 2009.

  • Olsen, Ragnar Ludvig. Marin bioprospektering. Foredrag for Fiskeri og kystdepartementet, Seksjon for fiskeriøkonomi og struktur 2009-03-11 - 2009.

  • Olsen, Ragnar Ludvig. Filetering av laks pre- eller post-rigor. Fordeler og ulemper. Foredrag for bedriften Lerøy Aurora AS, Skjervøy 2009-05-28 - 2009.

  • Hofer, Tim; Eriksen, TE; Jensen, Ida-Johanne; Elvevoll, Edel Oddny; Jørgensen, Trond Ø.; Andersen, Jeanette hammer; Olsen, Ragnar Ludvig. Screening for antioxidants in Arctic marine organisms. SFRR Europe 2009-08-26 - 2009-08-29 2009.

  • Hofer, Tim; Eriksen, TE; Jensen, Ida-Johanne; Elvevoll, Edel Oddny; Andersen, Jeanette hammer; Olsen, Ragnar Ludvig. Screening for Compounds with Antioxidant Activities from Arctic and sub-Arctic Marine Organisms. Bioprosp konferensen 2009 2009-02-24 - 2009-02-25 2009.

  • Kristoffersen, silje; Vang, Birthe; Håkonsen, Håvard; Olsen, Ragnar Ludvig. Foredling av torsk fra merd. Norsk Fiskeoppdrett 2008; Volum 7. ISSN 0332-7132.s 50 - 51.

  • Vang, Birthe; Pedersen, Alice Marie; Rørstad, Gunnar; Angell, Snorre; Tande, Kurt Steinar; Olsen, Ragnar Ludvig. Calanus finmarchicus - A new raw material for the bio-marine industry. 38th WEFTA Meeting 2008-09-17 - 2008-09-19 2008.

  • Håkonsen, Håvard; Olsen, Ragnar Ludvig. Fileter fra oppdrettstorsk produsert pre- og post rigor og lagret med og uten skinn. Vekttap og proteinnedbrytning under islagring i 14 dager. 2008.

  • Eilertsen, Steinar; Styrvold, Olaf B.; Olsen, Ragnar Ludvig. Islagring av torsk (Gadus morhua) og brosme (Brosme brosme. Har brosme spesiell lang holdbarhet?. 2008.

  • Hofer, Tim; Eriksen, Tonje Engevik; Andersen, Jeanette hammer; Olsen, Ragnar Ludvig. Screening for compounds from Arctic and sub-Arctic marine invertebrates with antioxidant activities. Konferanse 2008-10-31 - 2008-11-04 2008.

  • Olsen, Ragnar Ludvig. Foredling av oppdrettstorsk og kvalitet. Foredrag for bedriften Codfarmers AS, Halsa, Bodø 2008-12-19 - 2008.

  • Olsen, Ragnar Ludvig. Kvalitet av oljer. Foredrag for bedriften Hordafor AS, Aabybro, Danmark 2008-11-28 - 2008.

  • Olsen, Ragnar Ludvig. Syremåling og oljekvalitet. Foredrag for bedriften ProBio ASA, Tromsø 2008-09-01 - 2008.

  • Olsen, Ragnar Ludvig. Sjømat og helse. Populærvitenskapelig møte 2007-06-06 - 2007-06-06 2007.

  • Holmvåg, Thommy R.; Olsen, Ragnar Ludvig. Pre-rigor filletering av laks - bare fordeler. Norsk Fiskeoppdrett 2007 (11). ISSN 0332-7132.s 54 - 57.

  • Olsen, Ragnar Ludvig. Biprodukter - en rask veg til økonomisk lykke?. Fiskerikandidaten 2007.s 38 - 39.

  • Kristoffersen, silje; Olsen, Ragnar Ludvig. Atlantic cod (Gadus morhua L.) in captivity. Muscle quality as effected by slaughter procedures and filleting time. 2007 ISBN 978-82-91086-50-7.

  • Swan, Karoline; Olsen, Ragnar Ludvig. Kvalitet av olje framstilt ved ensilering av lakseslo. 2007.

  • Holmvåg, Thommy R.; Olsen, Ragnar Ludvig. Mikrobiologisk kvalitet og vekttap hos islagrede laksefileter produsert pre- og post rigor. 2007.

  • Olsen, Ragnar Ludvig. Lipidkjemi - med vekt på fisk. 2007.

  • Olsen, Ragnar Ludvig. Antioksidanter: Hva er de godt for og hvor finner man dem. Fagdag, MabCent 2007-11-19 - 2007-11-19 2007.

  • Pedersen, Alice Marie; Olsen, Ragnar Ludvig. Olje fra raudåte (Calanus finmarchicus). Oksidativ stabilitet, fettklasser og karotenoidinnhold. 2007.

  • Vang, Birthe; Olsen, Ragnar Ludvig. Farmed Atlantic cod (Gadus morhua L.). Comparative studies on fillets produced pre- and post-rigor and on drip lost during ice storage. 2007.

  • Fretheim, Ole Ramse; Olsen, Ragnar Ludvig. Stability of commercial fish oil products and effect of antioxidants added. 2007.

  • Olsen, Ragnar Ludvig. Sjømat og Mattrygghet. Fagkonferanse 2006-08-23 - 2006.

  • Wang, Pål Anders; Olsen, Ragnar Ludvig. Cathepsin D from cod (Gadus morhua L.) liver. Isolation and comparative studies. 2006.

  • Stangeland, Janne; Olsen, Ragnar Ludvig. Enzymatisk hydrolyse av kitin. 2006.

  • Pettersen, Michael; Olsen, Ragnar Ludvig. Mikrobiologiske aspekter under tørking og utvanning av tørrfisk. 2006.

  • Ervik, Stine; Olsen, Ragnar Ludvig. Filetspalting og utblødning hos laks (Salmo salar L.) etter slakting. 2006.

  • Fjellstad, Jørn Tore; Olsen, Ragnar Ludvig. Kollagen og glykosaminoglykaner i fiskemuskel. 2006.

  • Seliussen, Jørgen; Olsen, Ragnar Ludvig. Trace metal uptake and distribution in wild and both fed and starved farmed cod (Gadus morhua). The importance of trace metals uptake in the development of blood vessel melanosis. 2006.

  • Olsen, Ragnar Ludvig. Professor Olsen fikk undervisningsprisen 2006 - Bindeleddet til næringslivet. 2006.

  • Ofstad, Ragni; Olsen, Ragnar Ludvig; Taylor, Richard; Hannesson, Kirsten. breakdown of intramuscular connective tissue in pen-raised Atlantic cod (Gadus morhua L.) and farmed spotted wolffish (Anarhichas minor O.) related to gaping. Programkonferansen HAVBRUK 2006 2006-03-29 - 2006-03-31 2006.

  • Cooper, Marie; Jakobsen Friis, Tone; Seliussen, Jørgen; Olsen, Ragnar Ludvig. Black lines in the muscle of cultured Atlantic cod (Gadus morhua). Programkonferansen HAVBRUK 2006 2006-03-29 - 2006-03-31 2006.

  • Olsson, Gunn Berit; Cooper, Marie; Olsen, Ragnar Ludvig. Effekt av spormetaller på gelatinolytisk aktivitet i torskemuskel post mortem. programkonferansen HAVBRUK 2006 2006-03-29 - 2006-03-31 2006.

  • Lorentzen, Grete; Skjerdal, Taran; Bjørkevoll, Ingebrigt; Olsen, Ragnar Ludvig. Survival of Listeria spp. during salt-curing of cod (Gadus morhua L.). The 20th International ICFMH Symposium Food Micro 2006 2006-08-29 - 2006-09-02 2006.

  • Olsen, Ragnar Ludvig. NFH og FoU i fiskerinæringen. Håp i Havet 2006-02-02 - 2006.

  • Olsen, Ragnar Ludvig. Slakting og kvalitet av oppdrettstorsk. faglig møte 2005-04-23 - 2005.

  • Seppola, Magnus Andrè; Olsen, Ragnar Ludvig. Vannbindingsevne i filet fra torsk (Gadus morhua L.) og hyse (Melanogrammus aeglefinus L.). 2005.

  • Olsen, Tom Eirik; Olsen, Ragnar Ludvig. Kvalitet av saltfisk produsert fra oppdrettet torsk (Gadus morhua L.) - Misfarging og effect av dårlig utblødning. 2005.

  • Reinholdtsen, Rolf-Arne; Olsen, Ragnar Ludvig. Levendelagring av torsk fisket med line og snurrevad. 2005.

  • Ernstsen, Stein Roar; Olsen, Ragnar Ludvig. Fordøyelsesenzymer i ulike egg- og larvestadier hos torsk (Gadus morhua L.) og laks (Salmo salar L.) - en sammenlignende studie. 2005.

  • Holm Ernstsen, Hege; Olsen, Ragnar Ludvig. Fettsyresammensetning i hundefôr og i blodserum til hund. 2005.

  • Pedersen, Guro Meldre; Olsen, Ragnar Ludvig. Modulation of innate defence in teleosts by histone-like cationic proteins. 2005.

  • Lauritzsen, Kristin; Olsen, Ragnar Ludvig. Effects of antioxidants on copper induced lipid oxidation during salting of cod (Gadus morhua L.). 35th WEEFTA Meeting 2005-09-19 - 2005-09-22 2005.

  • Lorentzen, Grete; Skjerdal, Taran; Olsen, Ragnar Ludvig. Survival of Listeria innocua through salt-curing of cod. 35th WEEFTA Meeting 2005-09-19 - 2005-09-22 2005.

  • Olsson, Gunn Berit; Cooper, Marie; Olsen, Ragnar Ludvig. Gelatinolytic activity in muscle of farmed and wild Atlantic cod. 35th WEEFTA Meeting 2005-09-19 - 2005-09-22 2005.

  • Olsen, Ragnar Ludvig. Fett i matvarer - det gode, det onde og det nyttige. Spektroskopiske metoder i industriell matanalyse. 2005-04-06 - 2005.

  • Ofstad, Ragni; Taylor, Richard; Olsen, Ragnar Ludvig; Hannesson, Kirsten. Differences in structural decomposition of connective tissue in cod (Gadus morhua) and spotted wolffish (Anarhichas minor). 34th WEFTA Meeting 2004-09-12 - 2004-09-15 2004.

  • Lødemel, Jørgen Blikra; Olsen, Ragnar Ludvig. Gelatinolytic activities, matrix metalloproteinases and tissue inhibitors of metalloproteinases in fish. 2004.

  • Lauritzsen, Kristin; Olsen, Ragnar Ludvig. Quality of salted cod (Gadus morhua L.) as influenced by raw material and salt composition. 2004.

  • Kristoffersen, Silje; Tobiassen, Torbjørn; Godvik, Lars André; Esaiassen, Margrethe; Olsen, Ragnar Ludvig. pre-rigor filleting and quality of fed Atlantic cod (Gadus morhua L.). 34th WEFTA Meeting 2004-09-12 - 2004-09-15 2004.

  • Pedersen, Guro M.; Gildberg, Asbjørn; Olsen, Ragnar Ludvig. Novel applications of cod milt cationic proteins - advantageous additive in fish feed. 1. Trans Atlantic Fisheries Technology Conference (TAFT) 2003-06-10 - 2003-06-14 2003.

  • Lødemel, Jørgen Blikra; Olsen, Ragnar Ludvig. Matrix metalloproteinase in in fish muscle. 1. Trans Atlantic Fisheries Technology Conference (TAFT) 2003-06-10 - 2003-06-14 2003.

  • Olsen, Ragnar Ludvig; Olsson, Gunn Berit. Water-holding capacity and quality - studies on Atlantic halibut (Hippoglossus hippoglossus) muscle. 2003.

  • Olsen, Ragnar Ludvig; Godvik, Lars André. Blir det flere blautfisker i norsk fiskerinæring?. Fisk - Industri og Marked 2003 (1). ISSN 0803-5822.s 32 - 33.

  • Olsen, Ragnar Ludvig; Strøm, Terje; Sunnanå, Knut; Akse, Leif; Edvardsen, Torgeir. Nye FoU-tilbud til sjømatindustri. Forslag til strategi for fiskeriforskningsmiljøet i Tromsø. (fulltekst) 2000 (11/2000) ISBN 82-7251-450-8. ISSN 1890-579X.

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