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HPLC-DAD-ELSD测定泽泻药材中4种三萜类成分含量 被引量:16

HPLC-DAD-ELSD Simultaneous Determination of Four Triterpenoids in Rhizoma Alismatis
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摘要 目的: 建立泽泻药材中23-乙酰泽泻醇C、泽泻醇A、泽泻醇B、23-乙酰泽泻醇B 4个三萜类成分的HPLC-DAD-ELSD同时测定的定量分析方法。 方法: 采用Ultimate XB-C18色谱柱(4.6 mm×150 mm,5 μm),流动相乙腈-水(65:35),流速1.0 mL·min-1,二极管阵列检测器检测波长245 nm,蒸发光散射检测器的漂移管温度60 ℃,雾化器温度55 ℃,气体(氮气)压力20 psi,柱温30 ℃。 结果: 23-乙酰泽泻醇C、泽泻醇A、泽泻醇B、23-乙酰泽泻醇B 4个成分的线性范围分别为1.869-29.90 mg·L-1(r=0.999 8),3.731-74.62 mg·L-1(r=0.999 7),8.653-138.4 mg·L-1(r=0.999 9),4.832-77.31 mg·L-1(r=0.999 5),平均加样回收率分别为98.78%(RSD 2.63%),98.05%(RSD 2.72%),98.26%(RSD 2.86%),97.65%(RSD 2.95%)。 结论: 建立的HPLC-DAD-ELSD定量分析方法简便、快捷、准确,可用于泽泻药材的多成分定量分析,为综合评价泽泻的质量提供一种新的技术手段。 Objective: An analytical method was developed for simultaneously determining alisol C 23-acetate, alisol A, alisol B, alisol B 23-acetate four triterpenoids in the rhizoma of Alisma orientalis. Method: The assay was performed on a Ultimate XB-C18 column (4.6 mm×250 mm, 5 μm) with the mobile phase consisting of acetonitrile-water (65:35) at a flow rate of 1.0 mL·min-1. The column temperature was at 30 ℃ and the optimum detection wavelength of DAD was set at 245 nm. The drift tube and atomizer temperature of ELSD were 60, 55 ℃, with a carrier gas (N2) pressure of 20 psi. Result: The linear range of alisol C 23-acetate, Alisol A, alisol B and alisol B 23-acetate were 1.869-29.90 mg·L-1(r=0.999 8), 3.731-74.62 mg·L-1(r=0.999 7), 8.653-138.4 mg·L-1(r=0.999 9), 4.832-77.31 mg·L-1(r=0.999 5), respeltively. The average recoveries (n=6) were 98.78%(RSD 2.63%), 98.05%(RSD 2.72%), 98.26%(RSD 2.86%) and 97.65%(RSD 2.95%) respectively. Conclusion: The HPLC method is simple, rapid and accurate. This HPLC-DAD-ELSD verified method can be used for quantitative analysis of multi-component of Rhizoma Alismatis and provides a novel approach for evaluation of the quality of Rhizoma Alismatis comprehensively.
出处 《中国实验方剂学杂志》 CAS 北大核心 2014年第2期42-46,共5页 Chinese Journal of Experimental Traditional Medical Formulae
基金 国家自然科学基金项目(U1205022) 国家"十二五"科技支撑计划项目(2011BAI01B06) 福建省科技厅重大科技专项(2009YZ0001-1-5)
关键词 泽泻 三萜 高效液相色谱法-二极管阵列检测器-蒸发光检测器 质量控制 Rhizoma Alismatis triterpenoids HPLC-DAD-ELSD quality control
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