摘要
为分析宁夏枸杞叶茶的品质,对超声波提取,分光光度法测定方法进行了探讨,建立了测定枸杞叶茶中黄酮含量常规分析方法。结果表明,该方法测定枸杞叶茶中黄酮含量简便,准确度较好,最低检测限为74.5μg/L,线性范围为0～28μg/mL,相关系数为0.999 6,相对标准偏差为2.3%(n=7),回收率为91.2%。
It was studied that the determination method of flavone content in wolfberry leaf tea by the speetrophotometry with ultrasonic extraction. The result indicated that this determination method was simpleand accurate. The detection limit of new method for flavone content in wolfberry leaf tea sample is 74.5 μg/L, liner rang is 0-28μg/mL, correlation coefficient is 0.999 6, the relative standard deviation is 2.3%（n=7）. The recovery rate is 91.2%-92.3%.
出处
《宁夏工程技术》
CAS
2009年第2期135-136,共2页
Ningxia Engineering Technology
关键词
枸杞茶
黄酮
分光光度法
wolfberry leaf tea
flavone
spectrophotometry
