Preparation process of gradient tempering rice milling powder

The invention relates to a preparation process of gradient-conditioned milled rice, which comprises the following steps: firstly, ultrasonically atomizing brown rice, putting the atomized brown rice into a constant-temperature and constant-humidity chamber to balance moisture, then grinding the brown rice subjected to moisture balance to obtain crushed polished rice, putting the crushed polished rice into a vacuum conditioning container to enable rice grains to reach saturated moisture, and drying the rice grains to obtain the gradient-conditioned milled rice. Drying water on the surfaces of the rice grains, crushing the rice grains in a cyclone mill to obtain rice flour, and drying and sieving the rice flour to obtain the conditioned and milled powder. Compared with dry-method powder making, the modified rice flour has the advantages that the content of damaged starch is low, starch particles are complete and dispersed, the formed starch gel network structure is good, the flour property of the modified rice