With the aim to evaluate if any apple fraction is more sensitive than the others to DSC transitions, thermograms of different fractions (peel, pulp and pit) of uncoated apples were performed. DSC profiles (Fig. 1) always presented two endotherms (T1 and T2 at about 135 C and 195 C, respectively). Having in mind that the samples are lyophilised those transitions may be mainly related to the presence of the fructose and sucrose, respectively. However, peel presents a broader range of temperatures for the first transition, to which other compounds such as the main