Optimization on enzymatic extraction of soluble dietary fiber from mung bean residue
Using mung bean residue as raw materials, an enzymatic extraction technology of soluble dietary fiber (SDF) were discussed in this paper. An extraction technology of SDF was optimized through orthogonal-test. The composition and functional properties of SDF were determined. The results showed that the optimum extraction conditions were cellulase enzyme dosage 0.5%, pH5.0, extraction temperature 55 ℃ and extraction time 1.0 h. The SDF’s yield was 21.072% under optimized extraction process with low levels of impurities. The water holding capacity and expansibility of SDF were 4.857 g/g and 4.2 mL/g respectively.