文档介绍:[河北道地药材紫菀中总黄酮的荧光分析]药材紫菀价格
摘要:以槲皮素为标准品,用荧光分光光度法测定中药材紫菀中总黄酮含量,该方法的检出限为2.51×10-7 g/L,线性回归方程为y=531.840 48x-3.544 48,相关系数R2=0.999 03,线性范围为6.7×10-6~6.0×10-4 g/L;紫菀中总黄酮的平均含量为4.896×10-3 g/L,样品测定的RSD为0.92%,平均回收率为93.19%。该方法操作简便、正确度高,能够为中药材紫菀质量控制提供参考。
关键词:紫菀;总黄酮;荧光分光光度法
中图分类号:O657.3 文件标识码:A 文章编号:0439-811415-3323-03
Determination of Total Flavanoid in Radix Aster from Hebei Province by Spectrofluorimetry
FENG Jun-xiaa,LU Mina,GUO Rui-xiaa,QI Xiu-jub
Abstract: Quercetin was used as standard material to establish a new method for determining total flavanoid in Aster tataricus L.f. The detection limit of this method was 2.51×10-7 g/L, and the linear range was between 6.7×10-6~×10-4 g/L, and the equation of linear regression was y=531.840 48x-3.544 48, and correlation coefficient R2 was 0.999 03. The average amount of total flavanoid in A. tataricus was 4.896×10-3 g/L, and RSD was 0.92%, the average recovery was 93.19%. It is a simple and accurate method to determine total flavanoid in A. tataricus with spectrofluorimetry. The new method can be used for quality control of Chinese medicinal plant A. tataricus.
Key words: radix Aster; total flavanoid; spectrofluorimetry
紫菀是菊科多年生草本植物紫菀的干燥根及茎,含有润肺下气、祛痰止咳之功效[1,2],是河北省的道地药材之一[3]。黄酮类化合物是其关键药理活性成份,关键有槲皮素、山萘酚等[1,2,4]。本试验以槲皮素作为标准品,利用荧光分析法对紫菀中总黄酮含量进行了测定,为中药材紫菀的质量控制提供参考。
1 材料和方法
1.1 材料和试剂
紫菀,2011年1月购于石家庄新兴药房,