Analysis of biochemical components in muscle and nutritional evaluation of Schizothorax yunnanensis

Nutritional components in muscle of Schizothorax yunnanensis collected from Miju River of Erhai upriver were analyzed and evaluated. The results showed that the content of protein and fat were 16.86% and 1.15%, respectively. The content of saturated fatty acid, single unsaturated fatty acid, polyunsaturated fatty acid and essential fatty acid were 27.92%, 42.44%, 15.35% and 41.50%, respectively. The sum of C20:5 and C22:6 was 1.67%. The content of total amino acid, essential amino acid and delicious amino acid were 78.50 mg100 mg-1, 36.86 mg100 mg-1 and 27.95 mg100 mg-1, respectively. The content of Lys was 8.66 mg100 mg-1, only less than Glu. The AAS and CS of Met + Cys were 89 and 66, respectively, they were restrictive amino acids for S. yunnanensis.