To further improve the purity of the protein-rich fraction, follow-up enzymatic treatments (amylase and glucoamylase) were carried out according to the method of Shih and Daigle (2000). Amylase treatment was performed by adding amylase to the dispersion (0.5%, w/v) and incubating at pH 6.0 and 90 °C for 1 h, and glucoamylase treatment was then done with same additive amount of enzyme (0.5%, w/v) by incubating at pH 4.6 and 60 °C for 1 h. Rice protein prepared by enzyme-assisted microfluidization (EM-RP) was recovered by neutralization to pH 7.0, centrifugation, and freeze-drying. Protein content determined by the Kjeldahl method (N × 5.95) was used to calculate the recovery yield and purity of protein. Protein recovery was expressed as grams of protein in protein-rich fraction/total protein.