A process for extracting oleanolic acid from plant material is disclosed. Dried plant material is provided and an extraction process is carried out with a non-halogenated polar to medium polar solvent. The resulting solution that contains oleanolic acid is separated from the plant material and the solvent is removed using cooling, vacuum-evaporation or other techniques. A precipitate is formed that contains mostly oleanolic acid. Subsequent purification steps to provide highly purified oleanolic acid include washing techniques, re-crystallization techniques or the use of chromatography.
本发明公开了一种从植物材料中提取
齐墩果酸的工艺。提供干燥的植物材料,使用非卤化极性至中等极性溶剂进行提取。从植物材料中分离出含有
齐墩果酸的溶液,使用冷却、真空蒸发或其他技术去除溶剂。形成的沉淀物主要含有
齐墩果酸。随后的纯化步骤包括洗涤技术、重结晶技术或使用色谱法,以提供高度纯化的
齐墩果酸。