Assay Study on Glass Transition Temperature of Solutions in Freeze-drying

Abstract

Abstract: In order to examine the effects of cooling rate and solute composition on the glass transition temperature of tertiary butyl alcohol (TBA)/sucrose/water ternary system, a differential scanning calorimeter (DSC) was employed to study the freezing properties of the ternary system. The experimental results showed that the increase of cooling rate would result in the apparent decrease of Tg’. For 10% TBA /10 %sucrose /water solution, the value of Tg’ is -42℃ when the cooling rate is greater than 10℃/min. When the ratio of TBA to sucrose is less than 0.2, TBA cannot crystallize during cooling.

Key words: freeze-drying, glass transition, differential scanning calorimetry (DSC), tertiary butyl alcohol (TBA), sucrose

Zuo-Jian-Guo, HUA Ze-Zhao, LIU Bao-Lin, ZHOU Guo-Yan, XU Yi. Assay Study on Glass Transition Temperature of Solutions in Freeze-drying[J]. FOOD SCIENCE, 2006, 27(2): 58-60 https://doi.org/

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Assay Study on Glass Transition Temperature of Solutions in Freeze-drying

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