Abstract
ABSTRACTMonthly variations of lipid and fatty acid contents in muscle, liver, and roes of Alosa immaculata from the Black Sea were investigated. Lipid contents of muscle were higher than the levels obtained for liver and roes at 15.8–21.2%. Significant variations occurred in fatty acid levels (p < 0.05). Edible muscle and roe samples contained higher total polyunsaturated fatty acids (∑PUFA) in comparison with total saturated (∑SFA) and monounsaturated fatty acids (∑MUFA), while the majority of fatty acids were represented by ∑MUFA for liver samples. The highest ∑PUFA for edible muscles and roes were both obtained in March as 38.3 and 39.5%, respectively, while the highest ∑MUFA level was found for liver in February as 42.3%. The study showed that about 43–106 g of edible shad muscle will be enough to cover the weekly requirement of EPA + DHA, while less than 12 g of shad muscle should satisfy the daily n-3 PUFA intake. The results indicate that A. immaculata caught from the Turkish Black Sea is a good source of omega-3. This information can be used for commercialization of shad and also may aid further studies on physiology of shad species. Moreover, these results are useful to evaluate the utilization of by-products of this species for sustainable fisheries.
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