建立了一种快速、简便测定中药枇杷叶中4种三萜酸成分的液相色谱分析方法.枇杷叶经甲醇提取并定容后,采用C30色谱柱进行分离,以乙腈-水(95∶5,v/v)为流动相进行洗脱,流速为1.0 mL/min,于210 nm波长下检测.对不同产地枇杷叶中的山楂酸、科罗索酸、齐墩果酸和熊果酸4种同分异构体进行了测定和比较.结果表明,该方法分离度好(分离度(R)≥2.2),精密度高(RSD≤1.1%),线性关系良好(r≥0.999 2),重现性良好(RSD≤4.4%),加标回收率范围为95.4% ~ 101.7% (RSD≤4.8%),满足定量要求.该方法简便、快速,结果可靠,可作为枇杷叶质量评价的方法.
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