黄沙鳖与中华鳖肌肉氨基酸的分析及评价

Analysis and evaluation on amino acids of muscles of Chinese yellow sand soft-shelled turtle and trionyx sinensis

对黄沙鳖与中华鳖肌肉氨基酸含量及组成进行分析比较。结果表明,黄沙鳖肌肉的氨基酸含量比中华鳖稍高,分别为20.11%和18.92%,必需氨基酸分别占氨基酸总量的40.44%和40.55%,鲜味氨基酸含量相当。但是根据AAS和CS,第一限制性氨基酸都为蛋氨酸+胱氨酸,黄沙鳖的必需氨基酸指数高于中华鳖,表明黄沙鳖的蛋白质品质稍优越于中华鳖。

The purpose is to compare the amino acid contents and compositions of muscles in Chinese yellow sand soft-shelled turtle and trionyx sinensis.The results indicated that the amino acid of muscle in Chinese yellow sand soft-shelled turtle was slightly higher than that in the trionyx sinensis,and the content was 20.11% and 18.92% respectively,and the essential amino acids content in the total amino acids was respectively 40.44% and 40.55%,they are equivalent with the content of fresh taste amino acids.However,based on AAS and CS,the first limiting amino acids were methionine and cystine,the index of essential amino acid in Chinese yellow sand soft-shelled turtle was higher than that in trionyx sinensis.The results showed that the quality of protein in Chinese yellow sand soft-shelled turtle was better than in trionyx sinensis.