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LC-MS/MS was used to determine the amino acid composition in muscle, ovary and liver of whiting, Merlangus merlangus euxinus, caught off the coast of Sinop province in the Black Sea. A total of 19 amino acids (AA) were found in the different samples. The essential amino acids (EAA) in the different tissues of whiting were 55.9% in the meat, 54.8% in the ovary and 51.7% in the liver of the total amino acids. The AA contents except for Arg, Glu, Pro and Tau in meat and ovary of whiting were not significantly different (P 0.05), but the AA contents except for Cys, Tyr, Asp, Orn and Tau of these two tissues were significantly (P 0.05) higher than the AA contents of the liver. These results showed that whiting ovaries have approximately as much protein as the meat.
Bilgin et al. (Thu,) studied this question.