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Article Dans Une Revue EPL - Europhysics Letters Année : 2004

Comparative study of trehalose, sucrose and maltose in water solutions by molecular modelling

Adrien Lerbret
J.-P. Demaret
  • Fonction : Auteur
Frederic Affouard
  • Fonction : Auteur
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Michel Descamps
  • Fonction : Auteur

Résumé

A systematic study of three well-known bioprotectant sugars - trehalose, sucrose and maltose - in water solutions has been performed at different concentrations and temperatures using molecular-dynamics simulations. A variety of relevant probes such as the size of hydrogen-bonded water clusters, the orientational order parameter q, the Voronoi volume and the dynamical structure factor have been determined to describe the effect of the three disaccharides on water quantitatively. This investigation points out different structural and dynamical behaviours for which a threshold concentration φA and a crossover temperature TA emerge. A "destructuring" effect on the water network and a slowing-down of its dynamics are highlighted. These results suggest narrow links between the different scenarios tentatively explaining bioprotection.

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Chimie
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Dates et versions

hal-01567183 , version 1 (21-07-2017)

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Citer

Patrice Bordat, Adrien Lerbret, J.-P. Demaret, Frederic Affouard, Michel Descamps. Comparative study of trehalose, sucrose and maltose in water solutions by molecular modelling. EPL - Europhysics Letters, 2004, 65 (1), pp.41--47. ⟨10.1209/epl/i2003-10052-0⟩. ⟨hal-01567183⟩
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