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Phase diagram of water-sucrose system

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posted on 2023-02-22, 11:14 authored by Geoff SmithGeoff Smith

 The phase diagram for the sucrose-water system. The starting point shown by the red dot and the arrows that follow the phase boundary indicates the freezing path of a solution containing 5 % sucrose when frozen at rates typical of a freeze-dryer (0.5 to 1 °C min-1). The alternative route shown by the vertical dotted line is the freezing path when ultra-fast cooling to provided. Then the degree of supercooling takes the product below the glass transition of the 5% w/w solution and results in no ice but a purely amorphous, glassy solid.

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