大黄蒽醌类成分的提取方法筛选及均匀设计优化工艺研究

目的:研究大黄中蒽醌类成分的最佳提取方法并优化其提取工艺。方法:分别用超声法、加热回流法和索氏提取法对大黄进行提取,以总蒽醌、芦荟大黄素、大黄酸、大黄素、大黄酚、大黄素甲醚的含量为指标比较3种提取方法。在此基础上通过均匀设计法研究总蒽醌(UV)、5种蒽醌类化合物的提取工艺。结果:加热回流法为最佳提取方法。最佳提取工艺为提取时间90min、提取次数1次、甲醇浓度95%、药材目数2.0007目,蒽醌类成分综合评分可达6.556分。结论:该提取工艺设计合理,质量易于控制。

Technology for Optimizing Extraction Method and Uniform Design of Anthraquinones Components of Radix et Rhizoma Rhei

OBJECTIVE： To study extraction method of anthraquinones components of Radix et Rhizoma Rhei and optimize extraction technology. METHODS： Ultrasonic extraction, heating reflux extraction and soxhlet extraction were adopted to extract Radix et Rhizoma Rhei respectively. 3 kinds of extraction technology were compared with the content of total anthraquinone, aloe-emodin, rhein, emodin, chrysophanol, physcione as index. The extraction technologies of UV and 5 kinds of anthraquinone compounds were optimized by uniform design method on the basis of previous study. RESULTS： Heating reflux extraction which was optimal extraction technology was as follows： extracting time of 90 min, extracting for 1 time, methanol concentrations of 95%, medicinal mesh of 2.000 7. Comprehensive score of anthraquinones could reach 6.556.CONCLUSION： The extraction technology is reasonable, available in quality control.