The AC of milled rice was determined by the relative absorbency of starch-iodine color in a digested solution of 100-mesh rice flour according to the method of Perez and Juliano(25).
RVA pasting properties were determined on a rapid visco analyzer(RVA) in accordance with the operation manual (NewPort Sci. Co.,Australia).
Rice starch paste profile characteristics were described by six parameters: peak viscosity (PV), hot paste viscosity (HPV), cool paste viscosity (CPV), breakdown viscosity (BDV)PV-HPV),setback viscosity (SBV)CPV-PV), and consistency viscosity (CTV)CPV-HPV) in accordance with the procedure of Bao and Xia(26).