Determination of seasonal variation in the meat quality and biochemical composition of mediterrian mussel (Mytilus galloprovincialis, Lamarck, 1819) from the Eastern Black Sea region

In this study, seasonal variations in biochemical composition and meat quality of Mediterrian Mussel in the Eastern Black Sea Region were investigated. Percentage of meat yield of Mediterrian Mussel was observed higher in summer and autumn than spring and winter. General average of the four seasons were determined as 24.00 %. Significant variation in the amounts of dry matter, crude ash, crude protein, crude fat and glycogen were occurred depending on seasons and stations. The general average values of all seasons were accounted as 18.95%, 1.70%, 12.04%, 1.82% and 3.38% respectively. Total amino acid contents for spring, summer, autumn and winter were detected as 13272.13, 14252.13, 17472.13 ve 12548.88 mg/100 gr, respectively. Seasonal average values of total essential amino acid amounts were accounted as 6605.27, 6520.13, 6825.13 ve 5186.13 mg/100g and total non-essential amino acid contents 6666.88, 7732.00, 10647.00 ve 7362.75 mg/100g, respectively. Annual general average values of palmitic and stearic acids of saturated fatty acid (SFA) groups in fatty acids were found as % 19.62 (287.30 mg/100 g) and %4.46 (64.32 mg/100g), respectively. Amongst monounsaturated fatty acids (MUFA) groups the highest value was observed for was belonging to eicosanoic acid (6.39 %) followed by oleic acid (4.53%). The lowest total polyunsaturated fatty acid (ΣPUFA) was found in summer (45.66 %) and the highest in spring (50.98%). Eicosapentaenoic Acid (EPA) values showed a similar trend with PUFA values while Docosahexaenoic Acid (DHA) values showed opposite situation.