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利用微波萃取技术针对某中药厂双黄连制剂生产过程中产生的废弃黄芩提取药渣进行了有效成分的再次提取并同传统水提工艺进行了对比。以有效成分(黄芩苷)收率做为考察指标,用正交设计结合单因素分析方法考察微波提取黄芩苷的最佳提取条件,旨在探讨植物药提取废渣的再利用价值、探寻植物药提取废渣资源化的有效途径。结果表明:各因素对黄芩苷收率的影响依次为:乙醇浓度>粒径>功率>提取时间,其中乙醇浓度为显著性影响因素,最佳工艺为:以30%乙醇作为提取溶剂,黄芩药渣粒径80目,微波功率选择500W,微波提取2min。与水提工艺相比,在最佳工艺条件下,微波提取工艺能够获得较高收率的黄芩苷。
The microwave extraction technology was used to extract the dregs from the produced Scutellaria baicalensis Georgi in the production process of Shuanghuanglian preparation in a traditional Chinese medicine factory. The effective components were extracted again and compared with the traditional water-extraction process. Taking the yield of active ingredient (baicalin) as the index of study, the optimum extraction conditions of baicalin extracted by microwave were investigated by orthogonal design and single factor analysis. The aim was to explore the value of recovery of botanical drug residue, An effective way of recycling waste residue. The results showed that the effects of various factors on the yield of baicalin were as follows: ethanol concentration> particle size> power> extraction time, of which ethanol concentration was the significant influencing factor. The optimum process was as follows: 30% ethanol as the extraction solvent, Slag size 80 mesh, microwave power selection 500W, microwave extraction 2min. Compared with the water extraction process, under the optimum process conditions, the microwave extraction process can obtain a higher yield of baicalin.