反相高效液相法测定二黄消炎片中5种异喹啉类生物碱的含量

目的 建立同时测定二黄消炎片中5种原小檗碱类生物碱(小檗碱、药根碱、表小檗碱、黄连碱、巴马汀)含量的测定方法.方法 采用反相高效液相色谱(RP-HPLC)法测定.色谱柱:YMC-Pack ODS-AM(4.6 mm×250.0 mm,5μm);流动相:以0.1％ (v/v)甲酸水溶液-乙腈流动相梯度洗脱;流速:0.4 mL/min;进样量:10 μL;检测波长:345 nm;柱温:27℃.结果 二黄消炎片中5种生物碱成分的色谱分离行为良好,小檗碱、巴马汀、黄连碱、药根碱及表小檗碱的线性范围分别为1.526 4～5.342 4(r=0.999 9)、0.403 2～1.411 2(r=0.999 6)、0.309 7～1.083 9(r=0.999 8)、0.111 2～0.389 2(r=0.999 8)、0.162 2～0.567 7(r=0.999 6)μg,平均回收率分别为98.69％、98.66％、98.67％、98.67％、98.67％.结论 反相高效液相色谱法可行性高,专属性强,准确性高,重现性好,可作为二黄消炎片质量控制的参考依据之一.

RP-HPLC simultaneous determination of five isoquinoline alkaloid in Erhuang Xiaoyan tablets

Objective To establish a method for determining five isoquinoline alkaloids (including berberine,jatrorrhizine,jatrorrhizind,coptisine and palmatine) in Erhuang Xiaoyan tablets simultaneously.Methods Determination by reversed phase high performance liquid chromatography (RP-HPLC).Column:YMC-Pack ODS-AM (4.6 mm× 250.0 mm,5 μm);mobile phase:elution with 0.1％ (v/v) formic acid aqueous solution-acetonitrile mobile phase gradient;flow rate:0.4 mL/min;injection volume:10 μL;detection wavelength:345 nm;column temperature:27 ℃.Results Five of isoquinoline alkaloids in Erhuang Xiaoyan tablets were separated perfectly.The good linear relationships were obtained in the following ranges,1.526 4-5.342 4μg (r=0.999 9) for berberine,0.403 2-1.411 2 μg (r=0.999 6) for palmatine,0.309 7-1.083 9 μg (r=0.999 8) for coptisine,0.111 2-0.389 2 μg (r=0.999 8) for jatrorrhizine and 0.162 2-0.567 7 μg (r=0.999 6) for epiberberine.The recoveries were 98.69％,98.66％,98.67％,98.67％ and 98.67％,respectively.Conclusion The method possesses high feasibility,strong specificity,high accuracy and good reproducibility,which can be used for the quality control of Erhuang Xiaoyan tablets.