Abstract: A nutrition-enriched rice manufacturing method includes a harvesting process of harvesting raw unhulled rice as a starting material from a paddy field, a nutrition enriching process of generating nutrition-enriched unhulled rice by heating the raw unhulled rice of which average moisture content is at a predetermined level of 20% by weight or more with a microwave heating device and heat-retaining the raw unhulled rice for a predetermined period of time with a heat retention device, and a drying, hulling and polishing process of drying nutrition-enriched unhulled rice so as to have an average moisture content suitable to a long-term storage, hulling to remove chaff, and polishing to remove embryo and bran layer so as to obtain nutrition-enriched polished rice which abundantly contains gamma aminobutyric acid in an endosperm part.

Abstract: A nutrition-enriched grain manufacturing apparatus includes a heating processing portion including a far infrared ray radiator which emits far infrared rays to a flow-down path along which grain flows down, an upper rotary valve device and a lower rotary valve device which adjust a flow rate of the grain, an accumulation portion which accumulates the grain, a lower screw conveyer and a bucket conveyer which transport the grain which has flown down from the heating processing portion to the discharge portion to the accumulation portion, a moisture meter which measures a moisture content of the grain, a grain temperature sensor which measures a grain temperature, a main controller which controls output from a burner and operations of the upper rotary valve device and the lower rotary valve device such that the grain temperature is a predetermined grain temperature.

Abstract: A nutrition-enriched rice manufacturing method includes a harvesting process of harvesting raw unhulled rice as a starting material from a paddy field, a nutrition enriching process of generating nutrition-enriched unhulled rice by heating the raw unhulled rice of which average moisture content is at a predetermined level of 20% by weight or more with a microwave heating device and heat-retaining the raw unhulled rice for a predetermined period of time with a heat retention device, and a drying, hulling and polishing process of drying nutrition-enriched unhulled rice so as to have an average moisture content suitable to a long-term storage, hulling to remove chaff, and polishing to remove embryo and bran layer so as to obtain nutrition-enriched polished rice which abundantly contains gamma aminobutyric acid in an endosperm part.