Abstract
The freeze-thaw behaviour of 10-60% glucose solutions was observed with the aid of Differential Scanning Calorimetry (DSC), cryomicroscopy and X-ray diffractometry. The results from DSC revealed that two exothermic peaks were observed in 51-55% glucose solution during cooling. The X-ray diffraction measurement illustrated that these two exothermic peaks in cooling are the ice crystal. The ice crystal in the first exotherm is the mixture of hexagonal and cubic ice. The recrystallization in the highly concentrated glucose solution is in the cubic form and consequently transform to hexagonal form during melting period.
