Comparison of Polyunsaturated Fatty Acids Content in Filets of Anadromous and Landlocked Sockeye Salmon Oncorhynchus Nerka
Article first published online: 13 DEC 2012
© 2012 Institute of Food Technologists®
Journal of Food Science
Volume 77, Issue 12, pages C1307–C1310, December 2012
How to Cite
Gladyshev, M. I., Lepskaya, E. V., Sushchik, N. N., Makhutova, O. N., Kalachova, G. S., Malyshevskaya, K. K. and Markevich, G. N. (2012), Comparison of Polyunsaturated Fatty Acids Content in Filets of Anadromous and Landlocked Sockeye Salmon Oncorhynchus Nerka. Journal of Food Science, 77: C1307–C1310. doi: 10.1111/j.1750-3841.2012.02998.x
- Issue published online: 13 DEC 2012
- Article first published online: 13 DEC 2012
- MS 20121152 Submitted 8/22/2012, Accepted 10/9/2012.
- kokanee salmon;
- polyunsaturated fatty acids;
- sockeye salmon
Abstract: Fatty acid composition and content of 2 forms of sockeye salmon Oncorhynchus nerka from lakes in Kamchatka Peninsula (Russia) were compared. One form of sockeye salmon was anadromous (“marine”), that is, adult fish migrated in ocean to feed and grow and than return in the lake to breed. Fish of another form, kokanee, never migrate in the ocean. Per cent levels of the main indicators of nutritive value, eicosapentaenoic acid (EPA, 20:5n-3), and docosahexaenoic acid (DHA, 22:6n-3), were significantly higher in the landlocked O. nerka. However, concentrations of EPA and DHA per wet weight of filets were higher in the marine form, because of the relatively higher content of sum of fatty acids in their muscle tissue. As concluded, fish fed in marine environment had higher contents of long-chain n-3 fatty acids per wet weight than fish of the same species, fed in fresh waters. In general, both the anadromous sockeye salmon and the landlocked kokanee salmon can be recommended for human diet as a valuable product concerning contents of EPA and DHA.
Practical Application: The long-chain polyunsaturated acids (PUFA) have been specifically recommended for humans to prevent cardiovascular disease and psychiatric disorders. Fish are known to be the main source of PUFA in human diet. Data on PUFA content in diverse food fish is essential to compare the benefits they offer for consumers’ health. We compared PUFA contents in 2 forms of popular food fish Oncorhynchus nerka, migrating sockeye salmon and landlocked kokanee salmon, and found that both forms are valuable product concerning PUFA content.