Study on Preparation of Peptide from Rice Bran

The process of hydrolyzation by alkaline protease for preparing rice bran peptide was studied.The effects of different extraction times,extraction temperatures,pH value and ratio of material to water on the extraction rate of rice bran protein were investigated.And the optimum conditions for producing rice bran protein by means of enzymatic hydrolysis have been obtained through orthogonal experiments i.e.pH 9.0,temperature 37℃,enzyme 0.5 % and hydrolyzing time 180 min.The result showed that the method of enzyme hydrolysis and acid-solution is a very efficient method.