Quality of Crude Fish Oil Extracted from Herring Byproducts of Varying States of Freshness
Article first published online: 20 JUL 2006
DOI: 10.1111/j.1365-2621.2003.tb05694.x
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How to Cite
Aidos, I., Van Der Padt, A., Boom, R. and Luten, J. (2003), Quality of Crude Fish Oil Extracted from Herring Byproducts of Varying States of Freshness. Journal of Food Science, 68: 458–465. doi: 10.1111/j.1365-2621.2003.tb05694.x
Publication History
- Issue published online: 20 JUL 2006
- Article first published online: 20 JUL 2006
- MS 20020343 Submitted 6/6/02, Revised 7/1/02, Accepted 7/17/02, Received 8/8/02
- Abstract
- References
- Cited By
Keywords:
- crude oil;
- PUFAs;
- freshness herring byproducts;
- lipid oxidation;
- storage;
- processing
ABSTRACT: Herring byproducts were stored at 2 and 15 °C for up to 72 h. Over time, significant increases of total volatile bases (TVB), histamine, putrescine, cadaverine, and tyramine were detected. However, only tyramine and TVB levels were temperature-dependent. The level of total polyunsaturated fatty acids (PUFAs) was constant. Longer byproducts storage gave rise to an oil with higher levels of free fatty acids, eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), and total PUFAs, while fluorescent compounds were lower. A higher storage temperature led to oil higher in α-tocopherol and EPA levels and lower in anisidine value. Surprisingly, the oil with the highest content of PUFAs was not produced from the freshest byproducts, and oil with low oxidation products can be extracted from stored byproducts.

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