HPLC同时测定精制桂枝茯苓胶囊中3种活性成分

目的:建立同时测定精制桂枝茯苓胶囊中3个有效成分——丹皮酚、苦杏仁苷、芍药苷含量的HPLC分析方法。方法:C₁₈柱,流动相乙腈-水(含1‰磷酸),阶梯洗脱,流速1mL·min^-1;MWD检测器。结果:苦杏仁苷线性范围为12.87-102.94μg·mL^-1,r=0.9999;芍药苷线性范围为24.84-198.7μg·mL^-1,r=0.9999;丹皮酚线性范围12.57-100.56μg·mL^-1,r=0.9999。3个化合物的精密度与重复性RSD均<1.5%。结论:该法精密度高,重复性好,又可降低质量检验成本,可用于精制桂枝茯苓胶囊的质量控制。

The simultaneous determination of laetrile, paeoniflorin and paeonol in Jingzhi Guizhi Fuling capsule by HPLC

OBJECTIVE: To establish an HPLC method for the simultaneous determination of three major bioactive components in Jingzhi Guizhi Fuling capsules namely laetrile, paeoniflorin and paeonol. METHOD: A LiChrospher C18 column (4.6 mm x 250 mm, 5 microm) was used. The chromatography was carried out with a stepwise gradient programming. The mobile phase was acetonitrile-water (containing 0.1% phosphorous acid) and the flow rate was 1.0 mL x min. RESULT: The linear range of laetrile was 12.87-102.94 micron x mL(-1), r = 0.999 9, paeoniflorin 24.84 - 198.7 microg x mL(-1), r = 0.9999 and paeonol 12.57-100.56 microg x mL(-1), r = 0.999 9. The method is accurate with variation less than 1.5 % and recovery more than 95 %. CONCLUSION: The method was successfully applied to analyze three major bioactive components in Jingzhi Guizhi Fuling capsules.