The invention relates to a method for coproduction of rice
starch and
rice protein. The method comprises the step of pretreatment of raw materials, first mixing and
enzyme reaction, first separation and washing, homogenization, second separation and washing, second mixing and
enzyme reaction, third separation and washing,
drying and the like. The method disclosed by the invention is used for realizing the coproduction of the rice
starch and the
rice protein. In the rice
starch produced by the method disclosed by the invention, the content of
protein is below 0.3%, the content of starch is above 96%, the dextrinization rate of the starch is below 2.5%, the extraction rate is above 90%, the degree of
hydrolysis of the
rice protein is below 10%, the content of the
protein is above 90% and the extraction rate of the rice
protein is above 85%. The rice starch produced by the method disclosed by the invention can be widely applied to the industries such as foods, medicines and
cosmetics, while the rice protein can be widely applied to the fields of health foods, nutritious foods and the like, and the additional value of
deep processing of rice is increased greatly.