In order to prepare rich protein product from rice dregs, alkaline and non-alkaline solvent extraction method were evaluated in light of the content and recovery rate of protein in the product. The result showed that for the non-alkaline method, with the rice dregs and solvent being used in a ratio of 1:8 and operated in 80℃ for 1 hr, the protein contained in the product was 89.5%, and the protein recovery rate 95.2%, which were superior to alkaline method. The product may be called rice protein isolate (RP...