Abstract:Objective To establish the method for determination of 2α,3α,24-trihydroxyurs-12-en-28-oic acid (AE)from the leaves of Actinidia eriantha Benth., and optimize the extraction and purification process. Methods The content determination method of AE was established by high performance liquid chromatography-evaporative light-scattering detector (HPLC-ELSD) using AE as reference substance. The optimal extraction process was researched by single factor test and orthogonal test. The optimal purification process was researched by single factor test. Results The stable content determination method of AE was established, and it was found that the content of AE in Actinidia eriantha Benth. leaves from 5 different habitats was quite different. The optimal process of the extraction was as follows: extraction for 2 hours with 15-fold 70% ethanol in the first time, and extraction for 1 hour with 10-fold 70% ethanol in the second time. The optimal purification process was as follows: concentrating the extract to 0.50 g crude drug/ml, discarding the supernatant after sit for 8 hours, adding 30% ethanol into the sediment to let the concentration become 0.50 g crude drug/ml, and stirring thoroughly, discarding the supernatant after sit for 8 hours again, adding the appropriate amount of petroleum ether (60-90) into the sediment, and washing thoroughly. The average content of AE intermediate was 36.25%, and the yield from medicinal materials to intermediates also reached 55.96%. Conclusion The method established in this experiment is stable and feasible, and can be used for the determination of AE in Actinidia eriantha Benth. leaves, the optimized process is simple, stable and repeatable, which is suitable for industrial production.
王永红;王雪莹;彭世陆;禹奇男;李红亮. 毛花猕猴桃叶中AE的含量测定方法建立及提取纯化工艺研究[J]. 中国当代医药, 2020, 27(25): 18-22.
WANG Yong-hong; WANG Xue-ying;PENG Shi-lu; YU Qi-nan; LI Hong-liang. Content determination of AE from the leaves of Actinidia eriantha Benth.and study on the extraction and purification process. 中国当代医药, 2020, 27(25): 18-22.
Xu HS,Wu YW,Xu SF,et al.Antitumor and immunomodulatory activity of polysaccharides from the roots of Actinidia eriantha[J].J Ethnopharmacol,2009,125(2):310-317.