[关键词]
[摘要]
目的筛选乌索酸提取的最佳工艺条件。方法根据乌索酸的理化特性,选取乙醇浓度、乙醇用量、提取时间、除杂剂浓度4个因素,每因素各取3水平进行正交试验。结果采用7倍量90%乙醇加热回流2次,每次1h,3%除杂剂除杂为最佳提取工艺条件。结论本工艺先进合理、实用可行,有利于工业化生产。
[Key word]
[Abstract]
Object To research and choose the best technology conditions for extracting ursolic acid from Sambucus chinensis Lindl.Methods According to physicochemical character of ursolic acid,orthogonal design and tests of extract technology fo rursolic acid were carried on,and four factors were chosen such as concentration,quantity of ethanol,extracting time,concentration of clearing agent,and three levels of each factor were used for orthogonal design and test.Results That was the best technology condition that ursolic acid was extracted by means of ethyl alcohol(90%) of 7 times as much as raw materials,and it is heated 2 times(each 1 h),and the concentration of clearing agent was 3%.Conclusion That is a better technology for industrial production because it is advanced and rational,practical and feasible.
[中图分类号]
[基金项目]
国家高技术研究发展计划(863计划)重点资助项目(2002AA2Z3217)