豨莶草的质量标准研究

目的:探讨莶草药材的定性、定量检测方法。方法:采用TLC检定莶草中奇壬醇的含量。结果:以氯仿 甲醇 甲酸(25∶5∶1)为薄层展开系统,可以清晰地检测奇壬醇;采用Polaris C₁₈色谱柱,以乙腈 水(25∶75)为流动相,可使奇壬醇达到基线分离,莶草中奇壬醇平均含量为 0.14%,奇壬醇在0.186~14.88μg呈良好线性关系,平均回收率100 0%,RSD 2.4%。结论:本法可作为莶草药材的定性、定量检测方法。

A study on quality standard for Herba Siegesbeckiae

OBJECTIVE: To establish the qualitative and quantitative methods of Herba Siegesbeckiae. METHOD: A TLC method was used for qualitative identification and a HPLC analysis was applied for quantitative determination of Herba Siegesbeckiae with kirenol as the reference substances. RESULT: Chloroform-methanol-formic acid (25:5:1) as a mobile phase of TLC, the spot of kirenol can be easily detected; Methanol extracts of Herba Siegebeckiae were separated on a Polaris C18 column with acetonitrile-water (25:75) as mobile phase and kirenol was separated well. The average content of kirenol in Herba Siegebeckiae was 0.14%. A good linear relationship between the peak areas and injected amounts of kirenol in the range of 0.19-14.9 microg and the average recovery was 100.0% (RSD = 2.4%). CONCLUSION: The method can be used for qualitative identification and quantitation determination of Herba Siegesbeckiae.