Investigation on the Shelf Life and Changes of Lipid and Fatty Acid Composition of Sturgeon (Acipenser stellatus) in Frozen Storage
Investigation on the Shelf Life and Changes of Lipid and Fatty Acid Composition of Sturgeon (Acipenser stellatus) in Frozen Storage
Date
2007
Authors
Hedayatifard, M
Yousefian, M
Journal Title
Journal ISSN
Volume Title
Publisher
Society of Fisheries Technologists (India)Cochin
Abstract
A study was carried out on the shelf life, fatty acid composition and changes in lipid
profile of Sturgeon (Acipenser stellatus) from the Southern Caspian Sea for twelve months in
frozen storage at -220C. Fresh fish tissue had 84.41% unsaturated fatty acids whereas in the
case of twelve month frozen samples it was 77.45%. Significant amount of polyunsaturated
fatty acids (PUFA) was present in the samples. The amount of tissue lipid (9.71%) and co-
3 fatty acids (16.64%) has come down to 8.03 and 8.98%, respectively during frozen storage.
The peroxide value increased to 20.11 meq/kg by twelve months in frozen storage from the
initial level of 7.24 meq/kg. There were significant variations in the amount of some fatty
acids like myristic, a - linolenic and arachidonic acids. Significant difference was also observed
in co-3 and co-6 fatty acids series during frozen storage. The results of this study indicate
that the maximum shelf life for Sturgeon is up to six-months in frozen storage.
Description
Keywords
Acipenser stellatus, Fatty acids, Lipid, Frozen storage
Citation
Fishery Tech 44(2):193-198