Method for producing oleanolic acid

本发明提供一种生产齐墩果酸的新方法，以五加科偬木属Aralia植物太白偬木Aralia taibaiensis Z.Z.Wang et H.C.Zheng为原料，经70％乙醇热提取、酸沉淀分离总皂甙、单独酸水解总皂甙、精制纯化等步骤得到齐墩果酸。采用本方法生产齐墩果酸，其得率为目前用女贞子生产齐墩果酸得率的10倍左右。本发明降低生产难度，缩短生产周期，大大提高产率，而且成品纯度高，解决目前生产中浓缩时起泡问题及酸水、废气污染等问题。 The present invention uses Aralia taibaiensis Z.Z. wang et H.C. Zheng as raw material, and adopts the processes of thermal extraction by using 70% ethyl alcohol, acid precipitation to separate total saponin, single acid hydrolyzing total saponin, and refining decontamination to obtain the invented oleanolic acid. As compared with existent method using ligustrum fruit to prepare oleanolic acid, its production period can be shortened, product purity can be raised and its yield can be greatly raised by about 10 times.