Studies on Functional Dietary Fiber Derived from Rice and Wheat Bran

摘要

Dietary fiber prepared from defatted rice bran and wheat bran by using chemical and enzymatic treatment was studied in the paper.Through Box-Benhnken center composite design and response surface methodology,the optimum extraction conditions were determined.For rice bran dietary fiber(RBDF),concentration of NaOH 0.2mol/L,soaking time 60min,Alcalase 2.5 AU/100g rice bran,thermal stable a-amylase 20000 U/100g rice bran,final purity of RBDF under this processing technology was above 75％.For wheat bran dietary fiber (WBDF),pH7.0,68 °C,Alcalase 4.32 AU/100g wheat bran,α-amylase 3440 U/100g wheat bran,final purity of WBDF under this processing technology was above 86％.