Seasonal changes in fat and fatty acid profiles of the Sakarya Chub (Squalius pursakensis) from the Melen river basin

Abstract

Total lipids, fatty acid composition of Squalius pursakensis fillet samples captured from Melen River Basin during winter, spring and summer seasons were evaluated. Total lipid levels were as 1.80% in winter, 2.56% in spring and 5.17% in summer. The composition of fatty acids showed that total polyunsaturated fatty acids (32.05-38.90%) were highest, followed by monounsaturated (29.85-35.40%) and saturated (27.10-31.23%). The fatty acid composition of polyunsaturated fatty acids (PUFAs) in fillets of S. pursakensis shows a high content n3 fatty acids eicosapentaenoic acid (EPA C20:5n3) and docosahexaenoic acid (DHA C22:6n3) with maximum rates of 6.70% and 16.33%, respectively (p<0.05). The saturated fatty acid (SFA) content was dominated by palmitic acid with the maximum ratio of 19.03%.