Riceflour was prepared by the dry milling method from dried rice grains after soaking.
Rice grains were washed 3 times, soaked at 18 ± 3 °C for 6 h, and dried at 18 ± 3 °C with
ventilation until the moisture content of rice grains was 12e14 g/100 g.
Milling was performed using a pin mill (Pyungjin Machinery Co., Seoul, Korea) built in 80, 120, 160 or 200 mesh standard sieve, respectively.