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Simultaneous determination of ursolic acid and oleanolic acid in Ilex cornuta Lindl.ex Paxt.by RP-HPLC with Photodiode Array Detector
Author(s): 
Pages: 53-55
Year: Issue:  1
Journal: Journal of Beijing University of Traditional Chinese Medicine

Keyword:  枸骨高效液相色谱熊果酸齐墩果酸光电二极管阵列检测器;
Abstract: 目的 结合超声技术提取构骨中熊果酸和齐墩果酸,建立RP-HPLC-PAD法同时测定其含量.方法 采用Kromasil C18色谱柱(250 mm×4.6 mm,5 μm),流动相为甲醇-0.2%磷酸水溶液(88:12),光电二极管阵列检测器(PAD),检测波长210 nm,流速0.8 mL/min,柱温30℃.以保留时间和紫外光谱对分离出的组分予以定性确证,用峰面积进行定量.结果 组分的质量浓度与其峰面积在一定的范围内呈现良好的线性关系,相关系数均为0.999 9,熊果酸进样量在0.443~7.088 μg、齐墩果酸进样量在0.247~3.952 μg时呈现良好的线性关系,平均加样回收率分别为99.12%、98.76%,RSD分别为1.2%、1.7%(n=6).结论 本方法灵敏、准确,重现性好,可用于构骨中熊果酸和齐墩果酸含量的测定.
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