Effects of Delayed Processing of Pink Salmon (Oncorhynchus gorbuscha) By-products on Fishmeal Quality |
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| Authors: | T H Wu P J Bechtel C K Bower |
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| Institution: | 1. United States Department of Agriculture/Agricultural Research Service , Subarctic Agricultural Research Unit, University of Alaska Fairbanks , Fairbanks, Alaska, USA ted.wu@ars.usda.gov;3. United States Department of Agriculture/Agricultural Research Service , Subarctic Agricultural Research Unit, University of Alaska Fairbanks , Fairbanks, Alaska, USA |
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| Abstract: | The effects of storage temperature and time on raw pink salmon by-products were evaluated in relation to the fishmeal produced. Chemical analyses were performed on the raw and processed by‐products at two temperatures. Total volatile base nitrogen values indicated substantial spoilage by day 2 at 15.4 ± 1.4°C and day 6 at 6.0 ± 0.8°C. For most biogenic amines in raw by-products stored at 15.4°C, there were many significant differences from the fresh by-products by day 2. For by-products stored at 6.0°C, significant changes in biogenic amine were evident by day 2 and continued to increase. The thiobarbituric acid reactive substances (TBARS) values of the raw material stored at 15.4°C started showing significant changes from fresh on day 3 and at 6.0°C on day 4. The lipid oxidation (TBARS) was significantly different from fresh by day 2. Biogenic amines in fishmeals suggested some changes occurred between day 0 and day 3 at 15.4°C and by day 7 at 6.0°C. |
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| Keywords: | biogenic amines fish by-products fishmeal total volatile base nitrogen lipid oxidation TBARS |
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