The invention discloses a method for extracting
rice protein by using rice, which comprises the following steps: soaking and
grinding,
rice milk adjustment, primary liquefying,
centrifugal separation, homogenizing, washing, centrifuging, enzymolysis,
enzyme inactivation, screen separation, washing, centrifuging,
drying, crushing and packing so as to obtain the
rice protein. The method overcomes the defects that the high-concentration alkali liquor has damage effect on
rice protein amino acid in an alkali extraction process, the quality of the extracted rice
protein is poor, and the purity and sanitary index of the extracted
protein cannot reach the edible standard; and in other methods for extracting the rice
protein by using
enzyme preparations, the
rice milk is liquefied at a temperature of over 95 DEG C and then is dried at the high temperature, so the rice protein is denatured, the color is darkened, and the function of the rice protein is damaged. The extracting method of the invention keeps good physical functionality of the rice protein, implements industrialization of the extraction and production of the rice protein, and meanwhile improves the production conversion rate and quality of rice
starch sugar.