建立了用高效液相色谱法测定五味子和含五味子的制剂中五味子乙素的流动相体系.用Shim-pack VP-ODS (250 mm×4.6 mm,5 μm)色谱柱,在柱温30 ℃、检测波长285 nm、流速1.0 mL/min的条件下,用不同的流动相组成及其不同比例研究了五味子提取液中3种木脂素(五味子乙素、安五脂素和五味子甲素)的保留时间及其分离情况,从中选择测定五味子乙素的最佳流动相体系.结果表明,在甲醇-水、甲醇-冰醋酸-水的流动相体系中,安五脂素和五味子乙素很难完全分离;而在乙腈-甲醇-水和乙腈-冰醋酸-水流动相体系中,3种木脂素可很好地分离.以乙腈-甲醇-水(体积比为17∶58∶25)为流动相测定五味子和护肝片中3种木脂素的含量,相对标准偏差(n=4)为0.95% ～5.8% ,平均加标回收率为94.50% ～105.6% .将该流动相体系用于供试品中3种木脂素含量的测定,分离效果好,结果令人满意.
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