Temperature dependence of the rotational mobility of the sugar and water molecules in concentrated aqueous trehalose and sucrose solutions.
Carbon-13 and deuteron spin lattice relaxation times T1 of concentrated solutions of trehalose and sucrose in heavy water are given as function of temperature. From the temperature dependence of the T1 ideal glass transitions temperatures T0 are derived. For both compounds the T0 derived for the disaccharides are at high concentrations larger than the T0 of the water molecules.
Karger
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Institut für Biophysik und Physikalische Biochemie Universität Regensburg.
Lüdemann
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HD
D002151:Calorimetry; D002236:Carbohydrate Conformation; D003903:Deuterium; D017666:Deuterium Oxide; D015394:Molecular Structure; D012996:Solutions; D013395:Sucrose / Q000737:chemistry*; D013816:Thermodynamics; D014199:Trehalose / Q000737:chemistry*; D014867:Water
D012996:Solutions; D014867:Water; D013395:Sucrose; D003903:Deuterium; D014199:Trehalose; D017666:Deuterium Oxide