Studies on the Relations between Phase Transition and Can-breaking of CTCBE

Abstract

Abstract: The relations between phase transitions and can-breaking of CTCBE and CB under different crystallization conditionswere investigated. The thermal and crystallization properties of CTCBE and CB were determined by Differential ScanningCalorimetry (DSC) and X-Ray Diffraction (XRD). The results showed that serious phase transition (powder-like, double peaksin DSC) occurred in the central parts of untempered CTCBE under slow cooling condition, which changed the crystal structureof CTCBE and lead to can-breaking. Slight phase transition occurred in the central parts of untempered CTCBE under quickcooling condition, which is not strong enough to cause can-breaking. Almost no phase transition occurred ( single peak in DSC)under the same crystallization conditions in CB and no can-breaking happened. The XRD data of the crystals were the same fortempered CTCBE, and were different for untempered CTCBE, under quick and slow cooling conditions. There were consistencesin XRD data between tempered and untempered CB, both under slow cooling condition and under quick cooling condition.

Key words: CTCBE, CB, crystallization conditions, phase transitions, can-breaking

GAO Yin-Yu, HE Xiao-Li, LIU Mei-Sen, CHEN Qin, WEI Qiang-Hua, CHEN Cai-Shui, RUAN Rong-Sheng. Studies on the Relations between Phase Transition and Can-breaking of CTCBE[J]. FOOD SCIENCE, 2004, 25(11): 84-88.

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Studies on the Relations between Phase Transition and Can-breaking of CTCBE

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