摘要
采用高效液相色谱法测定了保健食品中α-硫辛酸的含量。色谱柱为Phenomenex-C18ODS柱,流动相为甲醇∶磷酸二氢钾溶液(pH=2)=75∶25,UV检测波长为330nm,外标法峰面积定量,样品经超声溶解并过滤后,直接进样,平均加标回收率为98.89%。该方法不需经复杂的样品处理,简便、快速、准确,能够用于α-硫辛酸类保健食品的质量控制。
;A method for the determination of e-lipoic acid in health food by HPLC is described. The chromatographic system is consisted of Phenomenex-C18 ODS column and mobile phase of methanoI-KH2PO4 （pH =2） （75：25） with UV detection at wavelength 330nm. The sample is extracted by ultrason and then filtrated. The average recovery is 98.89% and RSD is 2.26%. The method is simple, rapid and suitable for the analyses of the α-lipoic acid in health food.
出处
《食品工业科技》
CAS
CSCD
北大核心
2006年第8期178-179,共2页
Science and Technology of Food Industry
