Reference : Enzymatically prepared n-alkyl esters of glucuronic acid: The effect of freeze-drying co...
Scientific journals : Article
Life sciences : Food science
http://hdl.handle.net/2268/37022
Enzymatically prepared n-alkyl esters of glucuronic acid: The effect of freeze-drying conditions and hydrophobic chain length on thermal behavior
English
Blecker, Christophe mailto [Université de Liège - ULg > > Gembloux Agro-Bio Tech >]
Danthine, Sabine mailto [Université de Liège - ULg > > Gembloux Agro-Bio Tech >]
Petre, Maguy mailto [Université de Liège - ULg > > Gembloux Agro-Bio Tech >]
Lognay, Georges mailto [Université de Liège - ULg > > Gembloux Agro-Bio Tech >]
Moreau, Benoit [> >]
Elst, L Vander [> > > >]
Paquot, Michel mailto [Université de Liège - ULg > Gembloux Agro-Bio Tech > Gembloux Agro-Bio Tech >]
Deroanne, Claude [ > > ]
2008
Journal of Colloid & Interface Science
Academic Press
321
1
154-158
Yes (verified by ORBi)
International
0021-9797
1095-7103
Orlando
FL
[en] nonionic surfactants ; glucuronic acid ; biosurfactants ; enzymatic synthesis ; lipase ; DSC ; X-ray diffraction ; H-1 NMR
[en] In this work, some of the physicochemical properties of enzymatically prepared n-alkyl esters of glucuronic acid are presented. Two questions are addressed. The first concerns the influence of post-purification freeze-drying condition's on octyl glucuronate thermotropic behavior. Depending on the amount of water added before freeze-drying, the alpha/beta anomeric ratio determined by H-1 NMR is affected and differences are observed in DSC thermograms probably due to polymorphism. The second question concerns the effect of hydrophobic chain length on the thermal behavior. An increase of both transition temperature and transition enthalpy is observed by increasing the number of carbon atoms in the alkyl chain (C8 < C10 < C12 < C14). This kind of results can provide relevant information for the processing and the practical use of these nonionic surfactants. (C) 2008 Elsevier Inc. All rights reserved.
Researchers ; Professionals
http://hdl.handle.net/2268/37022
10.1016/j.jcis.2008.02.002

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