绿茶“恩施玉露”中氨基酸成分分析及营养价值评价

摘要

以地理标志保护产品绿茶“恩施玉露”为原料,用氨基酸自动分析仪对样品中各种氨基酸的含量进行检测,并采用氨基酸比值系数法对其营养价值进行评价.结果表明,绿茶“恩施玉露”中总氨基酸含量较高,为23.12％;各种人体必需氨基酸(Essential amino acid,EAA)种类齐全,且比例均衡,比值系数(RC)均接近于1；比值系数分(SRC)为72.5,营养价值较高.在各种人体必需氨基酸中,第一限制氨基酸为蛋氨酸+胱氨酸.%The geographical indication protect product of 'F.nshi Yulu' was taken as material, and the amino acid content was analyzed by automatic amino acid analyzer, the nutritional value was evaluated using amino acid ratio coefficient. Hie results showed that the total amino acid content in 'Enshi Yulu' was up to 23.12%, which contained all kinds of essential amino acids(EAA)and at the level of balance,the ratio coefficients(RC) were all close to l;the ratio coefficient points(SRC) was 72.5,which had higher nutritional value. Among human essential amino acids, the first limiting amino acids were Mel + Cys.