Process method for extracting rice protein from broken rice in rice processing

The invention discloses a process method for extracting rice protein from broken rice in rice processing. The method comprises the following steps: S1, carrying out screening and crushing; to be specific, carrying out screening treatment on broken rice, removing residual normal rice from the broken rice, separating out light bran hulls, heavy gravels and the like in the broken rice by using a grading stoner, and finally soaking the broken rice with deionized water for 5 to 8 hours; S2, carrying out grinding into thick liquid; to be specific, guiding the soaked broken rice into a punching needle grinding machine, and grinding the broken rice into thick liquid; and S3, carrying out ultrafine mashing; to be specific, completely pouring the slurry into a high-speed tissue masher, and performing high-speed mashing for 20 to 40 minutes. The invention relates to the technical field of vegetable protein processing. According to the process method, the broken rice is subjected to screening andmultiple crushing treatme