Study on character of water soluble dietary fiber from wheat bran hydrolyzed by cellulase

Wheat bran soluble dietary fiber was extracted from wheat bran dietary fiber.In pH 4.6,addition 28IU cellulase per gram wheat bran dietary fiber,under the condition 50℃ for 5h,soluble dietary fiber content was higher through single factor experiments.Preparation of soluble dietary fiber in the right conditions and study on its properties further,the results showed that the monosaccharides composition of the soluble fiber was major in xylose,glucose,and followed by the Arabinose.Infrared spectra indicated that there was a significant feature of the sugar ester absorption peaks.Determination of the molecular distribution by HPLC showed its molecular weight was about 2375Da.Observing its ultrastructure by scanning electron microscopy,there were irregular particles that covered with a pattern like that of a honeycomb.The soluble dietary fibre with high solubility and lower viscosity.