Results of inelastic neutron scattering (INS) measurements performed by the MARI spectrometer (ISIS, UK) on aqueous solutions of sucrose and alpha,alpha-trehalose are reported. To get some insight into the effects of disaccharides on the hydrogen-bond network of water, we investigated the intramolecular O-H stretching modes. The obtained spectra show that, contrary to sucrose, the presence of trehalose affects significantly the pure-water O-H stretching mode. The observed changes can be related to the presence of heavier vibrating units, namely to the higher hydration number of trehalose with respect to sucrose.

Analysis of changes of vibrational properties of water in the presence of disaccharides

BRANCA, Caterina;MAGAZU', Salvatore;MAISANO, Giacomo;MIGLIARDO, Federica;ROMEO, Giovanna;BELLOCCO, Ersilia Santa;LAGANA', Giuseppina
2002

Abstract

Results of inelastic neutron scattering (INS) measurements performed by the MARI spectrometer (ISIS, UK) on aqueous solutions of sucrose and alpha,alpha-trehalose are reported. To get some insight into the effects of disaccharides on the hydrogen-bond network of water, we investigated the intramolecular O-H stretching modes. The obtained spectra show that, contrary to sucrose, the presence of trehalose affects significantly the pure-water O-H stretching mode. The observed changes can be related to the presence of heavier vibrating units, namely to the higher hydration number of trehalose with respect to sucrose.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11570/1580663
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