Thermal and dynamic mechanical properties of frozen wheat flour dough added with selected food gums

The effects of food gums addition on wheat dough freeze-thaw and frozen storage stability were studied. Thermal and dynamic mechanical properties of frozen wheat dough without yeast addition were determined by means of Differential Scanning Calorimetry (DSC) and Dynamic Mechanical Analysis (DMA). DSC results revealed that food gums showed the ability to increase freeze-thaw stability in frozen-stored samples wherein lower difference in melting enthalpy between first and second freeze-thaw cycle was shown. Based on DMA results, in general, difference between Tg’ and storage temperature (- 18°C) of dough became smaller upon addition of food gums. This may have a practical implication whereby the unfrozen phase could be better protected against physical degradation.