文献类型： 外文期刊

作者： Du, Bing ¹ ; Jiao, Yanli ¹ ; Huang, Zhiqiang ¹ ; Mao, Liankai ¹ ; Fan, Yuanyuan ¹ ; Wu, Haixiong ² ; Jiang, Longbo ³ ; Ya ¹ ;

作者机构： 1.South China Agr Univ, Coll Food Sci, Guangzhou 510642, Guangdong, Peoples R China

2.Juxiangyuan Health Food Co Ltd, Zhongshan 528437, Guangdong, Peoples R China

3.Millet Res Inst Shanxi Acad Agr Sci, Shanxi 046011, Peoples R China

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.