Thermogravimetric (TG) and Differential Scanning Calorimeter (DSC) were used to determine the thermal property of resistant starch Fibersol 2 in this paper. The TG curve indicated that this kind of resistant starch began to decompose at 293.85℃. The fastest decomposition rate was achieved at 312.37℃ and the decomposition ended at 330.89℃. The DSC curve showed that besides two small endothermic peaks at about 204.23℃ and 225.48℃, one big endothermic peak appeared at about 24.36℃, and the peak temperature of transformation was about 98.54℃ with transformation enthalpy being 179.1 J/g, which indicated that the structure of the tested sample was mainly of branch-chain crystal.
