ORBi: Richard Gaetan - Chemical and enzymatical modifications of sugar derived from lignocellulose

Reference : Chemical and enzymatical modifications of sugar derived from lignocellulose


	Document type :	Scientific congresses and symposiums : Poster
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Chemistry
	To cite this reference:	http://hdl.handle.net/2268/22626

Title :	Chemical and enzymatical modifications of sugar derived from lignocellulose
Language :	English
Author, co-author :	Richard, Gaetan [Université de Liège - ULg > Gembloux Agro-Bio Tech > Gembloux Agro-Bio Tech >]
	Laurent, Pascal [Université de Liège - ULg > Gembloux Agro-Bio Tech > Gembloux Agro-Bio Tech >]
	Nott, Katherine [Université de Liège - ULg > Gembloux Agro-Bio Tech > Gembloux Agro-Bio Tech >]
	Richel, Aurore [Université de Liège - ULg > Gembloux Agro-Bio Tech > Gembloux Agro-Bio Tech >]
	Helleputte, Murielle [Université de Liège - ULg > > Gembloux Agro-Bio Tech >]
	Paquot, Michel [Université de Liège - ULg > > Gembloux Agro-Bio Tech >]
	Wathelet, Jean-Paul [Université de Liège - ULg > > Gembloux Agro-Bio Tech >]
Publication date :	Jan-2009
Page number :	A4
On invitation :	No
Audience :	International
Event name :	Carbohydrate as Organic Raw materials V : building a sustainable future
Event date :	January 20-23th, 2009
Event organizer :	Faculté des sciences de l'université de Lisbonne
Event place (city) :	Lisbonne
Event country :	Portugal
Keywords :	[en] lipase ; glucosidase ; glucuronic acid ; galacturonic acid ; uronic acids ; chemical synthesis ; surfactants ; cellobiose
Abstract :	[en] Actually, biorefinery is increasingly considered as a promising alternative to petroleum chemistry, since it aims at not only the replacement of fossil energy but also the development of chemicals from biomass, with applications such as detergents, phytopharmaceutics, solvents, plastics, etc. The valorisation of carbohydrates from renewable raw materials is currently the subject of numerous researches. In this context, the synthesis of new surfactants derived from the sugars issued from the lignocellulose hydrolysis was undertaken by chemical or enzymatic routes. In this poster, the examples of glucose, cellobiose and uronic acids will be discussed. Whatever the way used, the reaction conditions (use of a catalyst, protection/deprotection steps, type of solvent, presence of co-solvent, reactant concentrations, etc) were optimized to yield a panel of carbohydrate derivatives (some examples of the structures obtained are given above). These differ by the nature of the alkyl chain (in length and in degree of saturation), the type of chemical bond (amide, ester, thioester, acetal), and the position of substitution. The impact of these differences on the techno-functional properties of these modified sugars will be evaluated.
Funders :	Région wallonne : Direction générale des Technologies, de la Recherche et de l'Energie - DGTRE
Name of the research project :	Programme d'Excellence TECHNOSE
Target :	Researchers ; Professionals
Permalink :	http://hdl.handle.net/2268/22626

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	File	Commentary	Version	Size	Access
Open access	Abstract CORM V 2009 - Gaetan Richard.pdf		Author preprint	10.81 kB	View/Open
Open access	Poster CORM V 2009 - Gaetan Richard.pdf		Author preprint	784.21 kB	View/Open

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