高体革鯻、鲈和鳜的营养成分分析比较

Comparative analysis of nutritional composition on Scortum barcoo,Lateolabrax japonicus and Siniperca chuatsi

对高体革、鲈和鳜肌肉及内脏中的一般营养成分(水分、灰分、粗蛋白和粗脂肪)及脂肪酸和氨基酸组成进行了分析比较。结果表明:高体革内脏占鱼体重的32.90%,而其中脂肪含量高达87.06%;高体革肌肉及内脏中的水分、灰分和蛋白质含量都比鲈、鳜低,而脂肪含量明显高于鲈和鳜;对3种鱼的脂肪酸组成进行分析,共确定19种脂肪酸,其中20∶5ω3(EPA)和22∶6ω3(DHA)总量占鱼内脏比例最高的是高体革,达4.115%;高体革、鲈和鳜肌肉中的必需氨基酸占氨基酸总量最高的为高体革,达42.18%,氨基酸分(AAS)分别为116、75和73。

The common nutritional composition（ moisture, ash, crude protein and crude fat）as well as fatty acid and amino acid of the muscle and viscera of Scortum barcoo, Lateolabrax japonicus and Siniperca chuatsi were studied in this paper. The results showed that the viscera content of Scortum barcoo was 32.90% of total weight and 87.06% crude fat in it. The contents of moisture, crude ash and crude protein in the muscle and viscera of Scortum barcoo were all lower than those of Lateolabrax japonicus and Siniperca chuatsi, but its crude fat was higher obviously than Lateolabrax japonicus and Siniperca chuatsi. The fatty acid compositions of the three fishes were analyzed by gas chromatography, and 19 fatty acids were characterized in which EPA and DHA amount to 4.115 % in the viscera of Scortum barcoo , barcoo , barcoo. Moreover, the essential amino acids accounted for 42.18% of total amino acids in Scortum which was the highest content compared with other two fishes. The amino acid score （AAS） of Scortum Lateolabrax japonicus and Siniperca chuatsi was 116, 75 and 73 respectively.