Optimization of Microwave-assisted Extraction Technology of Polyphenols from Loropetalum chinense(R. Br.) Oliv

作     者：刘秀 黄维 肖珑 陈靖宇 荣蓉 李瑾 唐彩红 谢鹏 金晨钟 

作者机构：湖南人文科技学院/农药无害化应用湖南省高校重点实验室/湖南省农田杂草防控技术与应用协同创新中心湖南娄底417000 

出 版 物：《Agricultural Science & Technology》 (农业科学与技术（英文版）)

年 卷 期：2016年第17卷第11期

页      面：2629-2635页

学科分类：081702[工学-化学工艺] 081704[工学-应用化学] 08[工学] 0817[工学-化学工程与技术] 081701[工学-化学工程] 

基　　金：Supported by Open Funds for Innovation Platforms of Colleges and Universities in Hunan Province(15K066) National College Students'Innovative Entrepreneuria Training Program(201510553003) Research Study and Innovative Experiment Plan Project for College Students in Hunan Province(2015-499) 

主　　题：Loropetalum chinense （R. Br.） Oily. Potyphenols Microwave-assisted extraction technology Response surface analysis 

摘      要：In order to optimize the microwave-assisted extraction technology of polyphenols from Loropetalum chinense （R. Br.） Oliv., the effects of microwave power, ethanol concentration, solid to liquid ratio and extraction time on polyphenols extraction rate were investigated. On the basis of single-factor test, a four-factor and three-level orthogonal test was designed by response surface method to establish a mathematical model between the response value and various factors. The results showed that the intensity of effect of different influencing factor on polyphenols ex- traction rate ranked as microwave power＇s〉solid to liquid ratio＇s〉extraction time＇s〉 ethanol concentration＇s. The optimum microwave-assisted extraction conditions for polyphenols from L. chinense were as follows： extraction power 254 W, ethanol concentration 60%, extraction time 12.5 rain and solid to liquid ratio 1：17. Under the optimum extraction conditions, the extraction rate of polyphenols from L. chinense was 19.17%.