The Effect of Moisture Content and Heating Rates on Thermal Properties of rice Embryos Measured by Differential Scanning Calorimetry (DSC)

摘要

The effect of moisture content on the thermal properties of rice embryos was investigated using DSC. A long grain hybrid rice variety (Jinyou 974) grown in Hunan province of China was used in this investigation. Consistently higher values of Tg were measured when higher heating rates were used during DSC measurements at every set of moisture contents. The Tg values decreased from 65.28±0.38°C to 31.08±0.26°C with increase in moisture content from 10.7±0.3% to 22.0±0.7% (w/w). The analysis of variance and the regression analysis showed that both the linear function and Gordon Taylor model can adequately represent the variation of Tg with moisture content (R2>0.96).