Evaluation of Quality and Nutritional Components of the Muscle of Phractocephalus hemiliopterus

Nutritional components in the muscle of 10 pond-cultured Phractocephalus hemiliopterus individuals were analyzed in conventional methods.The contents of crude protein,crude fat,moisture and ash of fresh muscle samples were 18.75%,4.14%,75.57% and 1.48%,respectively.The dry samples of muscle contained 18 amino acids,of which 8 were essential for human health.The total content of amino acids was 85.96% and the content of essential amino acids was 35.16%,accounting for 40.90% of the total.It was apparent that the content of the different amino acids was stable and the constitutional rate of the essential amino acids accorded with the FAO/WHO Standard,fundamentally.According to nutrition evaluation in amino acids score(AAS)and chemical score(CS),Try(tryptophan)was found to be the limiting amino acid in Phractocephalus hemiliopterus muscle.In the dry samples,the quality score of four tasty amino acids was 32.98%.