Physicochemical properties of hydroxypropylated chestnut starch

摘要

Physicochemical properties of the native chestnut starch(NCS) and hydroxypropylated chestnut starch(HCS) with propylene oxide were investigated. The water binding capacity and blue value of chestnut starch were increased by hydroxypropylation. With increasing temperature, the swelling power and solubility were increased and those of HCS were higher. The light transmittance of HCS was higher than it of NCS. Endotherm characteristics were studied with DSC showed that temperatures of initial gelatinization of NCS and HCS were 64.44 deg C and 62.80 deg C, respectively. The temperature of initial gelatinization and enthalpies gelatinization in chestnut starch were decreased by hydroxypropylation. And the viscosity of HCS was higher than that of NCS.