氨基酸分析仪测定功能性饮料中游离氨基酸  

Detecting free amino acids in functional drinks by AAA

作　　者：姜荷[1] 王红青[1] 孙岚[1] 林赛君[1] 潘向荣[1] 

机构地区：[1]杭州质量技术监督检测院,杭州310019

出　　处：《中国卫生检验杂志》2010年第4期763-764,共2页Chinese Journal of Health Laboratory Technology

摘　　要：目的：建立同时测定功能性饮料中游离牛磺酸和赖氨酸的定量测定方法。方法：氨基酸分析仪定量测定。结果：同时测定功能性饮料中游离牛磺酸和赖氨酸的含量,牛磺酸和赖氨酸的最低检出限都为2 nmol/ml,线性范围都为6~100 nmol/ml,相关系数均大于0.9997,RSD均小于5%,回收率在98.7%~100.2%。结论：此方法灵敏度高,操作简单,重复性好,切实可行。Objective：To establish a quantitative method for detecting simultaneously the free amino acids in functional drinks.Methods：Quantitative determination was performed by amino acids analyzer.Results：The LOD of taurine and lysine were 2 nmol/ml.The calibration curve were linear in the range of 6~100 nmol/ml with correlation coefficients above 0.9997.The relative standard deviation was under 5% and the recovery between 98.7% and 100.2%.Conclusion：The method is sensitive,simple,stable,and have good recurrence.As a method to detect taurine and lysine in functional drinks,this method is practical and usefu1.

关 键 词：氨基酸分析仪 功能性饮料 牛磺酸 赖氨酸 

分 类 号：R155.5[医药卫生—营养与食品卫生学]