南美鲱鱼的含肉率及肌肉营养评价

The Study on the Rate of Flesh Content and Nutritional Quality of the Flesh of Prochilodus scrofa

测定了 6尾南美鲱鱼的含肉率及其营养成分 ,并对其营养价值进行综合评定。该鱼 (鲜样 )含肉率 83.6 5 % ;肌肉中含粗蛋白 1 7 74 % ,粗脂肪 5 2 5 % ,粗灰分 1 0 2 % ,水分 74 73% ,无氮浸出物 1 2 6 %。干物质中水解氨基酸总量 70 36 % ,其中必需氨基酸 2 7 90 % ,占氨基酸总量的 39 6 5 % ;游离氨基酸总量1 2 6 5 1 8mg 1 0 0g;必需氨基酸指数为 4 0 33;矿物质含量丰富 ,尤其是硒。认为南美鲱鱼是一种营养价值和养殖价值都比较高的淡水养殖新品种 ,具有良好的开发利用前景。

The rate of flesh content and nutritional composition of Prochilodus scrofa were determined, its nutritional quality was also synthetically evaluated. The results showed that the rate of flesh content of Prochilodus scrofa was 83.65%.Its crude protein, crude fat, ash, moisture and NFE of the fresh muscles were 17.74%, 5.25%,1.02%,74.73% and 1.26% respectively. On the basis of dry matter of the muscles, the amount of hydrolytic amino acids was 70.36%,in which the content of essential amino acids was 27.90%,making up 39.65% of total free amino acids. The content of total free amino acids was 1 265.18 mg/100g, the EAAI was 40.33. There was a high content of mineral in the muscles of Prochilodus scrofa especially for Se. In conclusion, Prochilodus scrofa is one of freshwater fishes with better nutritive value and raising value, deserving of exploitation and utilization.