Analysis of muscle nutrition composition and the nutrition evaluation of Oplegnathus punctatus

In order to evaluate the nutritive value of Oplegnathus punctatus,biochemical composition,amino acids composition,fatty acid composition and mineral composition in the muscle of O.punctatus were determined with routine methods.The results showed that the contents of moisture,crude protein,crude fat and crude ash of muscles were 78.26%,13.9%,1.48% and 1.34%,respectively.The amino acid composition of muscle contained 19 common amino acids,including 8 essential amino acids for human needs.The total amount amino acids were21.28%( wet weight).The essential amino acids were 8.33%,accounting for 39.17% of total amino acids,the ratio of essential amino acids to non- essential amino acids was 64.32%,the content of delicious amino acids was 7.78%,accounting for 36.58% of total amino acids.The total percentage of poly- unsaturated fatty acids was 35.24% in muscle,the EPA and DHA contents were 3.74% and 12.4%,respectively.The contents of calcium,phosphorus,magnesium in muscle were 720,9930 μg / g and 1510 μg / g,respectively.The dominant trace mineral content in the muscle of O.punctatus was Znic( 15 μg / g),iron was the second( 4.9 μg / g).The results indicated that the O.punctatus possessed high nutrition value and health effect and could be an important species for aquaculture in the future.