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)
摘 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×4.6mm,5µm),样品用
45%甲醇溶解,乙腈-水-磷酸(28:72:0.4)(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(75:25,磷酸调节pH为3.2)为流动相;检测波长为327nm测定绿原酸含量。结果:黄芩苷在0.0392~0.784μg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0.0429~0.858μg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 Qiuxiang(Changchun medical college for professional training Jilin Changchun 130031,China);Wang Ying(Tilin University the 4th clinical hospital);Ding Guizhong,Li Guoxun,Liu Qi(Jinlin provincial Drug institution)
ABSTRACT Objective:To establish a RP HPLC method for determination the content of Chlorogenic Acid and Baicalin in Yinhuang capsules。Method:Agilent Bxtend -C18(250 mm×4.6mm,5μm)was used,the sample was sissolved by 45% methanol,the acetonitril-water-phosphoric acid(28:72:0.4)was used as mobile phase;the detection wavelenth was 280 um to determine baicalin contents,The samplewas dissolved by 45% methanol,0.2mol·L-1 sodium dihgdro-phosphoric acid-me-thanol(75:25,phosphoric acid adjust to pH 3.2)was used as mobile phare;the detction wavelenth was 327 nm to determine the contents of chlorogenic acid。Result:The Linear range of baicalin was 0.039 2 - 0.784μg(r=1.000 0),the average recoveries was 99.5%,RSD 0.61%(n=5);the limear range of chlorogenic acid was 0.0429~0.858μg(r=1.000 0),the average recoveries was 99.8%,RSD=0.71%(n=5)。Conclusion:The method can be used to the quality control of yinhuang capsule。
KEY WORDS RP-HPLC;Yinhuang capsule;Chlorogenic acid;Baicalin
资料来自:中国药师-专业站 |