摘要:
OBJECTIVE:To optimize the extraction technology of Wikstroemia indica. METHODS:Using the active ingredient contents of umbelliferone and daphnoretin,and extraction yield as comprehensive evaluation indexes,solvent dosage,ethanol vol-ume fraction,percolation rate as investigation factors,single factor test was conducted to compare the 3 extraction methods(perco-lation method,boiling method,reflux extraction method),and screen the optimized one;and the technology conditions of opti-mized method were optimized and verified. RESULTS:The comprehensive score ordered as percolation method,reflux extraction method,boiling method,which was better by percolation method. The optimal technology conditions was as follow as percolation solvent of 70% ethanol,14-fold herbs at percolation rate of 5 mL/(min·kg);the comprehensive scores in 3 tests were 98.3,99.3, 98.8(RSD=0.51%,n=3). CONCLUSIONS:Percolation method is optimized for extracting active ingredient of W. indica,which is stable and reproducible.%目的:优化了哥王的提取工艺.方法:以了哥王的有效成分伞形花内酯、西瑞香素的含量和浸膏收率作为综合评价指标,以溶剂量、乙醇体积分数、渗漉速度为考察因素,采用单因素试验对了哥王的3种提取方法(渗漉法、煎煮法和回流提取法)进行比较,筛选最优提取方法;再用正交试验对最优提取方法的工艺条件进行优化并验证.结果:提取方法的综合评分排序为渗漉法>回流提取法>煎煮法,以渗漉法更优.渗漉法的最优工艺条件为渗漉溶剂70%乙醇,溶剂量为14倍药材量,渗漉速度为5 mL/(min·kg);验证试验中3次试验的综合评分分别为98.3、99.3、98.8(RSD=0.51%,n=3).结论:了哥王有效成分的提取方法选用渗漉法,优选出的渗漉法提取工艺稳定、重现性好.