And Conclusions
In this paper the range of the transition glass temperature and the microstructure of hard candy honey flavored have been investigated. By applying DSC technique, it has been determined that the glass transition temperature range for hard candy honey flavored was 35.36 –36.37 C. From product quality point of view, the glass temperature (Tg) is important to determine the cooling operating conditions in order to obtain adequate temperature leaving the cooling tunnel. Also, the glass temperature (Tg ) is important to determine the storage conditions, in order to avoid crystallization problems and therefore improve product shelf life.
On the other hand, SEM images revealed undesired characteristic like the presence of trapped air within the candy matrix.
DSC and SEM techniques provided useful and necessary knowledge about the relationship among the microstructure, thermal properties, composition (in particular moisture) and processing aspects, especially at cooling stage and product storage. It is clear that glass transition temperature serves as a guide for quality aspects.