响应面法优化黄芩中黄芩苷的电磁裂解提取工艺

目的:建立电磁裂解水提黄芩中黄芩苷的最佳工艺条件,为该提取技术的推广与应用提供参考。方法:在单因素试验基础上,选取提取时间、物料粒度、液料比3个因素进行Box-Behnken中心组合设计,以黄芩苷提取率为指标,利用响应面法优化黄芩苷电磁裂解提取的最佳工艺参数,并与超声法、乙醇回流法和煎煮法进行比较。结果:最佳工艺条件为提取时间2. 41 min,物料粒度过100目筛,液料比33 m L·g-1;在该条件下,黄芩苷提取率12. 21%。运用乙醇回流法、煎煮法和超声法提取时,黄芩苷的提取率分别为12. 91%,12. 62%,11. 61%。电磁裂解法提取黄芩苷的得率与其他几种常规提取方法接近,但提取时间明显缩短。结论:作为一种新兴的中药提取技术,电磁裂解提取具有快速高效、省时节能、绿色环保等优点,可为黄芩苷的工业化提取提供新方法。

Optimization of Electromagnetic Cracking Extraction Technology of Baicalin in Scutellariae Radix by Response Surface Methodology

Objective: To optimize the extraction conditions of baicalin from Scutellariae Radix by electromagnetic pyrolysis. Method: Based on single factor experiments, taking extraction time, material size and liquid-material ratio as factors, yield of baicalin as index, extraction parameters were optimized by response surface methodology, and compared with ultrasonic method, ethanol refluxing method and decoction method. Result: The optimal extraction conditions were as follows:extraction time of 2.41 min, material size of 100 mesh, liquid-material ratio of 33 mL·g^-1. Under these conditions, the yield of baicalin was 12.21%. The yields of baicalin by ethanol refluxing method, decoction method and ultrasonic method were 12.91%, 12.62% and 11.61%, respectively. The yield of baicalin by electromagnetic cracking extraction was close to several other conventional extraction methods, and the extraction time was significantly shortened. Conclusion: As a novel extraction technology of traditional Chinese medicine, electromagnetic cracking extraction has the advantages of high efficiency, energy and time saving, green environmental protection, etc. And it can provide a new method for the industrial extraction of baicalin.