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RP-HPLC法测定银黄胶囊中绿原酸和黄芩苷的含量-07.1

阅读: 时间: 2007-1-15 15:20:00

王秋香(长春医学高等专科学校  长春130031)   王颖(吉林大学第四临床医院)  丁贵忠  李国勋    刘琪(吉林省药物研究所)

  要 目的:测定银黄胶囊中绿原酸和黄芩苷的含量。方法:采用RP-HPLC法,色谱柱为Agilent Extend-C18柱(250mm×4.6mm5µm),样品用

45%甲醇溶解,乙腈-水-磷酸(28720.4)(用三乙胺调pH为2.7±0.1为流动相,检测波长为280nm测定黄芩苷含量;样品用50%甲醇溶解,

0.2mol·L-1磷酸二氢钠-甲醇(7525,磷酸调节pH3.2)为流动相;检测波长为327nm测定绿原酸含量。结果:黄芩苷在0.03920.784μg范围

内,线性关系良好r=1.000 0),平均回收率为99.5%,方法精密度RSD=0.61%n=5;绿原酸在0.04290.858μg范围内,线性关系良好

r=1.000 0,平均回收率为99.8%;方法精密度RSD=0.71%n=5结论:该方法可用于银黄胶囊质量控制。

关键词RP-HPLC银黄胶囊;绿原酸;黄芩苷

Determination of Content the Chlorogenic Acid and Baicalin in Yinhuang capsules by RP-HPLC

Wang QiuxiangChangchun medical college for professional training Jilin Changchun 130031China);Wang YingTilin University the 4th clinical hospital);Ding GuizhongLi GuoxunLiu QiJinlin provincial Drug institution)

ABSTRACT  ObjectiveTo establish a RP HPLC method for determination the content of  Chlorogenic Acid and Baicalin in Yinhuang capsulesMethodAgilent Bxtend -C18250 mm×4.6mm5μmwas usedthe sample was sissolved by 45% methanolthe acetonitril-water-phosphoric acid28720.4was used as mobile phasethe detection wavelenth was 280 um to determine baicalin contentsThe samplewas dissolved by 45% methanol0.2mol·L-1 sodium dihgdro-phosphoric acid-me-thanol7525phosphoric acid adjust to pH 3.2was used as mobile pharethe detction wavelenth was 327 nm to determine the contents of chlorogenic acidResultThe Linear range of baicalin was 0.039 2 - 0.784μgr=1.000 0),the average recoveries was 99.5%RSD 0.61%n=5);the limear range of chlorogenic acid was 0.0429~0.858μgr=1.000 0),the average recoveries was 99.8%RSD=0.71%n=5)。ConclusionThe method can be used to the quality control of yinhuang capsule

KEY  WORDS  RP-HPLCYinhuang capsuleChlorogenic acidBaicalin

 

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