PRE MILLING TREATMENT METHOD FOR PRODUCING RICE FLOUR AND DEVICE THEREFOR

摘要

Provided are a pretreatment method for producing rice flour whereby rice hardness is considerably lowered while avoiding water drainage in a water washing step and soaking step and a device therefor. The pretreatment method for producing rice flour comprises: a moisture content homogenization step for feeding a low humidity air stream to a starting material that is polished rice having a moisture content of 13.0 16.0% (w.b.%) and adjusting the moisture content to 11.0 13.0% (w.b.%) to thereby homogenize the moisture content; and a conditioning step for to the polished rice having been treated in the moisture content homogenization step adding water to give a moisture content of 20.0 45.0 % (w.b.%) and then promoting the moisture absorption toward the core of the polished rice grains to which water has been added.