Influence of seasons and fish body parts on fatty acid profile and effect of seasons on proximate composition of Anatolian khramulya (Capoeta tinca) and Colchic khramulya (Capoeta sieboldii) captured from the Çekerek Dam in Yozgat, Turkey

Abstract

Seasonal variations in nutrient content and fatty acid (FA) composition within the dorsal, ventral, caudal and whole muscle tissues of Capoeta sieboldii and Capoeta tinca, which were captured from the Çekerek Dam in Yozgat, Turkey, were investigated. The nutrient and fatty acid compositions of C. sieboldii and C. tinca changed according to the seasons and different body regions. Proximate compositions in these two fish species were 15.78–18.38 % protein, 1.19–2.65 % lipid, 78.42–81.25 % moisture, and 1.02–1.20% ash. The highest levels of saturated FA (SFA) were recorded in both C. sieboldii (26.94 %) and C. tinca (28.32 %) in the autumn, specifically in the ventral region. The highest monounsaturated FA (MUFA) values of C. sieboldii and C. tinca were observed in spring in ventral (31.30 %) and caudal (31.89 %) regions, respectively. The highest polyunsaturated FA (PUFA) values were 30.90 % (ventral) in winter for C. sieboldii and 33.95 % (dorsal) in autumn for C. tinca. The atherogenic index, thrombogenic index, n–6/n–3 FA ratio, and hypocholesterolemic/hypercholesterolemic ratio of C. sieboldii and C. tinca in this study were 0.42–0.67, 0.24–0.37, 0.10–0.34, and 1.34–2.23, respectively. These fish species represent valuable food sources for human health and nutrition.