Calorimetric study of the glass transition occuring in fructose solutions

✍ Scribed by Stephen Ablett; Martin J. Izzard; Peter J. Lillford; I. Arvanitoyannis; John M.V. Blanshard

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 626 KB
• Volume: 246
• Category: Article
• ISSN: 0008-6215
• DOI: 10.1016/0008-6215(93)84020-7

✦ Synopsis

The glass transition temperatures for dilute and concentrated fructose-water solutions have been determined by differential scanning calorimetry . The supplemented phase diagram is presented, and from this, the glass transition temperature (Tg) and concentration (Cg) of the maximally freeze-concentrated glass have been determined and found to differ, significantly for the latter and slightly for the former, from recently published values . Reasons for this discrepancy are discussed . Annealing vitrified fructose-water glasses above their Tg allows the fructose concentration in the amorphous phase to approach Cg as a result of ice formation .