丹参中丹参素四效逆流提取工艺的优化

目的:研究丹参中丹参素四效逆流提取工艺及其特点,并利用主成分分析和回归分析法对工艺参数进行优化。方法:采用正交实验设计,考察提取时间、溶剂用量、提取温度和粒度等因素对丹参素得率的影响,并比较了该工艺与普通热回流提取工艺的优劣。结果:获得四效逆流提取丹参中丹参素的最佳工艺条件(提取时间1h、溶剂用量12 mL.g^-1、温度80℃、粒度20~40目),与热回流提取工艺相比提取率提高19.4%,溶剂用量减少3/4,提取时间大大缩短。结论:四效逆流提取工艺相比传统的中药提取工艺有明显的优势,值得在中药工业生产中推广应用。

Optimizing process of four-effect countercurrent extraction of danshensu from Salvia miltiorrhiza

OBJECTIVE: To investigate the process factors and characteristic of four-effect countercurrent extracting process of Danshensu from Salvia miltiorrhiza. Optimizing the parameters by using regression analysis and principal components analysis (PCA). METHOD: Applying the orthogonal design method to optimize the extracting process. The factors of extraction time, solvent volume, extraction temperature and the degree of grinding were considered. And also, the new process was compared with the refluence process. RESULT: The optimal condition of four-effect countercurrent extraction of Danshensu from S. miltiorrhiza was 1 h extraction time, solvent to sample ratio of 12 mL x g(-1), 80 degrees C , 20 - 40 mesh of particle size. Compared with the refluence process, the countercurrent extracting process has the advantages of higher recovery, less solvent consumption and shorter extraction time. CONCLUSION: The four-effect countercurrent extraction process has great advantages and is good for Chinese medicinal materials.