| Sumario: | The effect of dry heat treatment (DHT) at medium or high temperature (80-120°C) for different durations (0.4-5 h) combined ivith sodium alginate (AG) on the physicochemical properties and crystalline structure of normal cornstarch (NCS) was studied. DHT at 120°C combined with AG reduced the fin a l viscosity, setback value, and gelatinization temperatures of NCS. DHT combined with AG exhibited a low-level effect on the gelatinization enthalpy and relative crystallinity of NCS and did not alter the X-ray diffraction pattern of NCS. Maximum gel hardness of NCS combined with AG was achieved after DHT fo r 1 h at 80°C, 100°C, and 120°C, respectively. When DHT was applied fo r the same time, the maximum gel hardness of NCS was achieved after DHT combined with AG at 100°C. DHT combined ivith AG did not change the crystalline type of NCS.
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