黄芩中天然防晒剂的索氏提取工艺研究

以确定黄芩药材中总黄酮类化合物提取的最佳提取条件为目的.以黄芩总黄酮得率为参考指标,采用单因素试验和正交设计法对提取时间(4、5、6 h)、溶剂中乙醇用量(60、80、100 mL)以及物料粒径数(10～40、40～70、70目)等影响因素进行考察,确定最优提取条件.结果表明:提取黄芩药材中黄酮类成分的最佳提取方案为乙醇用量100 mL,提取6 h,物料粒径数为40～70目.通过方差分析发现3个因素对黄芩的提取影响都不显著.乙醇索氏提取法简便、省时、经济,在测定总黄酮时可以考虑用乙醇索氏法来提取.试验为防晒霜的配置提供了一定的试验基础.

Research on the Extraction of Natural Sunscreen from the Radix Scutellariae by Soxhlet Extraction

To ascertain the optimized condition for extraction of flavones from Radix Scutellariae.The contents of flavonoids were taken as the indices and were determined.The extracting time(4 h,5 h,6 h),volume of ethanol(60 mL,80mL,100 mL) and the size of materials(10~40,40~70,70)were analyzed by orthogonal design and univariate;The optimized condition were as follows:extraction time was 6 h,size of materials was 40~70,extraction volume was 100 mL.Ethanol Soxhlet extraction method was simple,effective and practical,...