毛细管区带电泳法测定厚朴药材及其超临界流体萃取物中厚朴酚、和厚朴酚的含量

 目的建立一种用毛细管区带电泳法同时测定厚朴药材(Cortex Magnoliae Officinalis)及其超临界流体萃取物中厚朴酚(magnolol)、和厚朴酚(honokiol)含量的方法。方法用20 mmol·L^-1硼砂缓冲液(pH=10)为运行液，以磺胺甲唑(sulfamethoxazole)为内标，294 nm为测定波长。结果厚朴药材及其超临界流体萃取物中厚朴酚、和厚朴酚完全分离且呈良好线性关系,其加样回收率(%)分别为99.40和98.44，RSD(%)分别为 1.6和1.4(n=3)。结论方法简便、准确，可作为厚朴药材及其超临界流体萃取物质量控制方法。

Determination of magnolol and honokiol in cortex magnoliae officinalis and their supercritical fluid extract by capillary zone electrophoresis

OBJECTIVE　To establish a CZE method for the simultaneous determination of magnolol and honokiol in cortex magnoliae officinalis and their supercritical fluid extract.METHOD　The buffer solution was 20 mmol*L-1 sodium borate(pH=10),the internal standard was sulfamethoxazole and the detection wavelength was 294 nm.RESULTS　Magnolol and honokiol in cortex magnoliae officinalis and their supercritical fluid extract were separated completely and determined accurately.The recoveries and the relative standard deviation were 99.40% and 1.6% for magnolol,and 98.44% and 1.4% for honokiol (n=3) respectively.CONCLUSION　The method was simple and accurate and it can be used for the quality control of magnolol and honokiol in cortex magnoliae officinalis and their supercritical fluid extract.