Ethanol extraction of flavonoids from Mungbean Skin after twin-screw extrusion process

文献类型: 外文期刊

第一作者: Du, Bing

作者: Du, Bing;Jiao, Yanli;Huang, Zhiqiang;Mao, Liankai;Fan, Yuanyuan;Yang, Gongming;Wu, Haixiong;Jiang, Longbo

作者机构:

关键词: twin-screw extrusion;mungbean skin;flavonoids;response surface methodology (RSM)

期刊名称:BIOTECHNOLOGY, CHEMICAL AND MATERIALS ENGINEERING, PTS 1-3

ISSN: 1022-6680

年卷期: 2012 年 393-395 卷

页码:

收录情况: SCI

摘要: In order to increase the extraction rate of flavonoids from mungbean skin, twin-screw extrusion process was used as a pretreatment method. After optimizing conditions of twin-screw extrusion process, effects on ethanol extracting flavonoids were studied. Results revealed that the best extrusion conditions were: screw speed at 268r/min, extrusion temperature at 115 similar to 120 degrees C, feed moisture at 17% and feeding rate at 726g/min. Under these conditions, the optimum condition for ethanol extraction of flavonoids was: using 38% ethanol solution at a material-liquid ratio of 1:20 at 77.5 degrees C with 2.5 h. The average extraction rate of flavonoids from mungbean skin was 3.14%, comparing to rate of un-extruded material 2.07%, extraction rate raised by 51.5%. This pretreatment can destroy the density structure of mungbean skin which has great effect on the increase of extraction rate of flavonoids.

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