美洲黑石斑鱼营养成分分析与营养价值评价

In this experiment, the contents of the main nutrients such as protein, fat, moisture, ash, calcium and phosphorus were analysed, and the contents of the trace elements, amino acids and fatty acids in its muscle were determined for Centropristis striata. Moreover, its nutritional value was evaluated and compared with other fishes,livestocks and poultries. The results showed that the content of dry matter and protein are higher in its muscle. Then, all of 17 common amino acids（AA） contents in muscle was 17.51% in the fresh sample, and 7 of them are human essential amino acids（EAA）41.58% in the total amino acids（TAA）. The ratio of essential amino acids to nonessential amino acids（EAA/NEAA） was 84.46% ,and the essential amino acids index（EAAI） was 57.71. According to AAS and CS,which basically accorded with the issued standard value by FAO and WHO. The content of 5 delicious amino acids was 44.37% in the TAA, and the ratio of branched chain amino acids to aromatic amino acids was 2.83. The content of polyunsaturated fatty acids was 22.3% rich in its muscle also, in particular EPA and DHA. In conclusion, Centropristis striata is a species of delicious and high nutritional value,which well deserves exploitation and utilization. At the same time, this experiment was preparing for the next study to provide reference data for artificial feed and the expansion of aquaculture.

Analysis of Nutrient and Evaluation of Nutritional Value for Centropristis striata