茯苓皮中三萜酸类成分HPLC指纹图谱的方法学研究

Studies on HPLC Fingerprint of Triterpene Acids in Poria Peel

目的建立茯苓皮药材中三萜酸类成分的HPLC指纹图谱。方法采用HPLC法,以甲醇超声法提取样品,流动相:乙腈-0.5%磷酸水溶液(梯度洗脱);检测波长:242nm;柱温:30℃;流速:1.0mL/min。分析了10批不同产地的茯苓皮药材,采用计算机辅助相似性评价系统进行了评价,建立共有模式,计算10批样品的指纹图谱与其共有模式的相似度值。结果不同产地、不同批次的茯苓皮药材其成分含量存在较大差异。结论所建立的指纹图谱具有稳定、重现性好的特点,该研究将有助于茯苓皮药材的标准化种植、质量控制。

Objective To establish a method for HPLC fingerprint determination of the triterpene acids in poria peel.Methods Ethanol solvent and ultrasound method were used to extract the sample. The chromatographic conditions of RP-HPLC were:acefonitrile-0.5%phosphoric acid(linear gradient elution),the detection wavelength being 242 nm, temperature at 30℃and flow rate being 1.0mL·min-1. Ten batches of poria peel produced in different places were measured.The common model was set up to calculate the correlation coefficient, cosθbetween every batch vector and the total standard model vector, thus to define the similarity.Results There was much difference in the constituent content of poria peel produced in different places and batches.Conlusion The HPLC fingerprint of triterpene acids is stable and reprodacible,which is useful for standard cultivation and quality evaluation of the crud drug of poria peel.