Dynamic Microwave-Assisted Extraction of Total Ginsenosides from Ginseng Fibrous Roots  

作　　者：ZHANG Yuefei LI Yali LIU Zhe ZHONG Ling CHI Ruan YU Junxia 

机构地区：[1]School of Chemistry and Environmental Engineering,Wuhan Institute of Technology

出　　处：《Wuhan University Journal of Natural Sciences》2015年第3期247-254,共8页武汉大学学报（自然科学英文版）

基　　金：Supported by the National Natural Science Foundation of China(21006075);the Natural Science Foundation of Hubei Province(2014CFA115);the New Century Excellent Talents in University(NCET-11-0966);the Key Project of Chinese Ministry of Education(213024A)

摘　　要：A dynamic microwave-assisted extraction（DMAE） method is established for the extraction of total ginsenosides from ginseng fibrous roots. The extraction process has been simulated and its main affection factors（liquid/solid ratio K of solvent to ginseng powders（V/m）, irradiation time, irradiation temperature, extracting solution concentration, flow rate of solvent and microwave power） have been optimized by response surface methodology（RSM）. The optimum conditions of extraction are the liquid/solid ratio of 270 m L/g, the extraction temperature of 75 ℃, the extraction time of 35 min, ethanol concentration of 70%（V/V）, the solvent flow rate of 1.3 m L/min, and the microwave power of 500 W. The yield of ginsenosides obtained by the proposed DAME method is（15.0±0.7） %, which is well agreement with the yield predicted by the model. Compared with static microwave-assisted extraction, DMAE has a higher extraction yield and can avoid the degradation of ginsenoside.A dynamic microwave-assisted extraction（DMAE） method is established for the extraction of total ginsenosides from ginseng fibrous roots. The extraction process has been simulated and its main affection factors（liquid/solid ratio K of solvent to ginseng powders（V/m）, irradiation time, irradiation temperature, extracting solution concentration, flow rate of solvent and microwave power） have been optimized by response surface methodology（RSM）. The optimum conditions of extraction are the liquid/solid ratio of 270 m L/g, the extraction temperature of 75 ℃, the extraction time of 35 min, ethanol concentration of 70%（V/V）, the solvent flow rate of 1.3 m L/min, and the microwave power of 500 W. The yield of ginsenosides obtained by the proposed DAME method is（15.0±0.7） %, which is well agreement with the yield predicted by the model. Compared with static microwave-assisted extraction, DMAE has a higher extraction yield and can avoid the degradation of ginsenoside.

关 键 词：dynamic microwave-assisted extraction total ginsenosides ginseng fibrous root 

分 类 号：TS202.3[轻工技术与工程—食品科学] X132[轻工技术与工程—食品科学与工程]