| Summary: | In this study, it was determined the chemical
composition of the four ray species (Dasyatis
pastinaca, Raja radula, Raja clavata and Torpedo marmorata) caught from Mersin Bay in the Northeastern
Mediterranean Sea. For this purpose, lipid levels, fatty acid profiles, macro-trace
elements, and heavy metal levels in the liver and muscle tissues of the
Mediterranean rays were investigated. Lipid levels of liver tissue of D. pastinaca, R. radula, R. clavata, T.
marmorata were determined to be 80.21%, 53.73%, 45.57% and 45.26%,
respectively; while lipid levels for muscle tissue were 1.62%, 1.31%, 1.20% and
1.43%, respectively. In the fatty acid composition of muscle tissues of the
rays; ∑SFAs (total saturated fatty acids) levels were reported to be between
30.46% and 35.00%, ∑MUFAs (total saturated fatty acids) levels were 21.49% to
27.77%, ∑PUFAs (total polyunsaturated fatty acids) levels were 28.76% to
35.69%; while for liver tissues; ∑SFAs levels were reported to be between
25.76% and 31.15%, ∑MUFAs levels were 23.43% to 30.66%, ∑PUFAs levels were
21.86% to 30.54%. According to data of this current study, no potential toxic
metals (Cr, As, Cd, Pb, Hg) were detected in the fish oils obtained from the
tissues. Finally, it was showed that these fish had potential for fish oil
production because of their having fat in the liver tissues and there were also
no potential heavy metal in the both muscle oil and liver oil, being rather
healthy.
|
|---|