Seasonal differences in the muscle fatty acid profiles of two freshwater fish species Scardinius erythrophthalmus, Squalius cephalus

Yıl 2017, Cilt: 10 Sayı: 1, 104 - 109, 15.04.2017

Leyla Kalyoncu Zerrin Abuoğlu

Öz

Fatty acid compositions of the muscle lipids and its seasonal variations in Scardinius erythrophthalmus rudd and Squalius cephalus chub in Sapanca and Terkos Lake, were examined using a gas chromatographic method. Palmitic acid is saturated fatty acid and the other dominant fatty acid is stearic acid in both species. SFA contents in rudd were between 26.79% and 41.54% in all seasons. Oleic acid C18:1 ω9 was identified as the main monounsaturated fatty acid MUFA in both fishes for four seasons. It was found that chub had a high amount of C18:1 15.09% to 28.56 % in all seasons compared to rudd. It was noticed from the present data that docosahexaenoic acid DHA 22:6ω3 was predominant PUFA in muscle lipids of rudd. According to these data, it can be concluded that both freshwater fishes are a good sources for eicosapentaenoic acid EPA and DHA

Anahtar Kelimeler

muscle, fatty acid, seasonal changes, fish

İki tatlısu balık türünün Scardinius erythrophthalmus, Squalius cephalus kas yağ asidi bileşiminde mevsimsel farklılıklar

Öz

Sapanca ve Terkos göllerinde bulunan Scardinius erythrophthalmus kızılkanat ve Squalius cephalus kefal ’un kas lipidlerinin yağ asit kompozisyonu ve mevsimsel değişimleri gaz kromatoğrafik yöntemle incelenmiştir. Palmitik asit doymuş yağ asitidir ve diğer dominant yağ asidi her iki türde de stearik asitdir. Kızılkanattaki doymuş yağ asidi içeriği bütün mevsimlerde %26.79 ile % 41.54 arasındadır. Oleik asit C18:1 ω9 her iki balık türünde, bütün mevsimlerde primer doymamış yağ asidi olarak bulunmuştur. Kefalde, oleik asit C18:1 %15.09-%28.56 kızılkanata nazaran bütün mevsimlerde yüksek miktara sahiptir. Kızılkanat kas lipitlerinde dokosahexaenoik asit DHA 22:6ω3 dominant aşırı doymamış yağ asidi olarak tespit edilmiştir. Bu verilere göre her iki tatlı su balığının DHA ve eikosapentaenoik asit EPA yönünden iyi bir kaynak olduğu sonucuna varılmıştır

Anahtar Kelimeler

kas dokusu, yağ asidi, mevsimsel değişiklik, balık

Kaynakça

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