Extraction Technology of Insoluble Dietary Fiber from Bean Curd Residue in the Northern Shaanxi
The extraction rate of insoluble dietary fiber ( IDF) was evaluated by response surface method ( RSM) with different addition of enzyme concentration , reaction temperature and hydrolysis time.The results showed that the optimal extraction conditions were enzyme concentration of 4%, reaction temperature of 60℃and hydrolysis time of 5 h.In conditions of the optimal extraction , the extraction rate of IDF was 56.27%.