Microwave-assisted Extraction of Isoflavones from Belamcanda chinensis  

作　　者：龚盛昭 程江 杨卓如 

机构地区：[1]School of Chemical and Energy Engineering, South China University of Technology [2]Department of Chemical Engineering, Guangdong Industry Technical College Guangzhou 510300, China

出　　处：《Chinese Journal of Chemical Engineering》2005年第4期556-559,共4页中国化学工程学报（英文版）

摘　　要：Microwave-assisted extraction （MAE） of isoflavones from Belamcanda chinensis was studied using ethanol as the solvent. The single factor experiment and the orthogonal method were used to optimize the MAE condition. It was concluded that two doses of intermittent microwave power radiation, 300 W each for 4 rain, were needed for extraction. The mass ratio of solvent to material was 8：1 and the alcohol mass fraction was 80%. The extracted liquor was then concentrated under vacuum and degreased with petroleum ether. The yield of total isofiavones was about 8.8% and the contents of tectoridin and iridin were 67.6% and 16.3% respectively. Compared with direct-heating extraction （DHE）, MAE may shorten extracting duration, reduce solvent consumption, and improve yield and purity of isoflavones from Belamcanda chinensis.Microwave-assisted extraction (MAE) of isoflavones from Beiamcanda chinensis was studied using ethanol as the solvent. The single factor experiment and the orthogonal method were used to optimize the MAE condition. It was concluded that two doses of intermittent microwave power radiation, 300 W each for 4 min, were needed for extraction. The mass ratio of solvent to material was 8:1 and the alcohol mass fraction was 80%. The extracted liquor was then concentrated under vacuum and degreased with petroleum ether. The yield of total isoflavones was about 8.8% and the contents of tectoridin and iridin were 67.6% and 16.3% respectively. Compared with direct-heating extraction (DHE), MAE may shorten extracting duration, reduce solvent consumption, and improve yield and purity of isoflavones from Belamcanda chinensis.

关 键 词：Belamcanda chinensis ISOFLAVONE microwave-assisted extraction TECTORIDIN iridin 

分 类 号：TQ028.2[化学工程]