6533b86efe1ef96bd12cbdab

RESEARCH PRODUCT

A FTIR study on low hydration saccharide amorphous matrices: Thermal behaviour of the Water Association Band

Lorenzo CordoneSergio GiuffridaGrazia CottoneEugenio Vitrano

subject

Water Association BandHydrogen bondChemistryInfraredProtein-matrix couplingCondensed Matter PhysicsTrehaloseSpectral lineSettore FIS/07 - Fisica Applicata(Beni Culturali Ambientali Biol.e Medicin)Electronic Optical and Magnetic MaterialsAmorphous solidCrystallographychemistry.chemical_compoundSaccharideFTIRThermalMaterials ChemistryCeramics and CompositesPhysical chemistryFourier transform infrared spectroscopyTernary operationSettore CHIM/02 - Chimica Fisica

description

Abstract We report a study on the thermal behaviour of the infrared Water Association Band (WAB) in dry binary saccharide–water systems (containing trehalose, sucrose, maltose, and raffinose). This is a follow-up of preceding studies on analogous carboxymyoglobin-saccharide–water ternary systems, which pointed out a mutual protein-matrix influence (coupling). A comparison between binary and ternary systems, for all the saccharides studied, evidences a reduction in the residual water content in the latter and, except for trehalose, a sizable modification in the thermal behaviour, which is discussed in terms of structure and hydrogen bonding properties of the sugars. The study allowed us also to improve the definition of Spectra Distance, which is useful to roughly evaluate the system thermal evolution.

yearjournalcountryeditionlanguage
2011-01-01
10.1016/j.jnoncrysol.2010.06.042http://hdl.handle.net/10447/53931