醋制对商陆及商陆正丁醇部位中皂苷类成分含量的影响

Effect of vinegar processing on esculentosides in n-BuOH fraction and main toxic components in Phytolaccae Radix

为研究醋制对商陆及商陆正丁醇部位皂苷类成分的影响,比较商陆中主要毒性成分商陆皂苷B(EsB)和商陆皂苷C(EsC)醋制前后含量的变化,依据商陆《中国药典》醋炙工艺,将商陆正丁醇部位进行模拟醋制;采用液质联用法对商陆正丁醇部位醋制前后皂苷类成分进行研究;采用HPLC-ELSD方法检测毒性成分EsC和EsB在商陆生品、醋制品中的含量,考察商陆醋制前后的含量变化。结果显示,商陆正丁醇部位中除商陆皂苷甲(EsA)以外,各商陆皂苷类成分含量均不同程度下降,皂苷类化合物组成显著变化,但醋制后未见新化合物生成;含量测定发现生商陆中EsC和EsB的质量分数分别为0.12%,0.20%,醋制后下降为0.48%,0.094%。表明醋制能够显著改变商陆及商陆正丁醇部位中皂苷类成分的组成,显著降低毒性皂苷EsC和EsB的含量,表明商陆采用醋制法炮制的科学性。

This study was to investigate the effect of vinegar processing on esculentosides in n-BuOH fraction and the contents of the main toxic components esculentoside B （EsB） and esculentoside C （EsC） in Phytolaccae Radix pieces, n-BuOH fraction of Phytolac- cae Radix pieces was processed with vinegar according to the processing method in Chinese Pharmacopoeia. HPLC-MS-MS was adopted to analyze the esculentosides composition changes in n-BuOH fraction before and after vinegar processing. HPLC-ELSD was used to de- tect EsC and EsB contents in raw and vinegar processed Phytolaccae Radix pieces, and investigate the content changes before and after vinegar processing. Results showed that the esculentosides contents in n-BuOH fraction were significantly decreased except esculento- side A （EsA） ; there were significant changes in saponins compositions, but no new compounds were generated in n-BuOH fraction af- ter vinegar processing. The contents of EsC and EsB were 0. 12% and 0. 20% respectively in raw Phytolaccae Radix, and decreased to 0. 048% and 0. 094% accordingly after vinegar processing. It showed that vinegar processing could significantly change the composition of esculentosides in n-BuOH fraction from Phytolaccae Radix and reduce the contents of toxic components EsC and EsB, indicating the scientificity of vinegar processing for Phytolaccae Radix.