title: Synthesis and characterization of dehydrogenation polymers in Gluconacetobacter xylinus cellulose and cellulose/pectin composite.
abstract: To mimic the lignin polymerization process, mats of bacterial cellulose and of a pectin/cellulose composite were used as a host matrix for in vitro polymerization of coniferyl alcohol. A diffusion cell was used to allow the diffusion of both hydrogen peroxide and coniferyl alcohol into the peroxidase impregnated cellulose mats through dialysis membranes. The results indicate that significant polymerization occurs within the mats. The resulting binary and ternary blends were imaged by scanning electron microscopy (SEM) and characterized by chemical means. The presence of pectin induces a better dispersion of the synthetic lignin in the cellulose network and enhances the proportion of alkyl-aryl-ether in the polymer.
authors.affiliation: Unité Mixte de Recherche, INRA/URCA, Fractionnement des Agro-Ressources et Emballages, CRA 2 Esp R. Garros, 51686 Reims Cedex, France.
authors.forename: Jean-Pierre
authors.initials: JP
authors.lastname: Touzel
authors.forename: Brigitte
authors.initials: B
authors.lastname: Chabbert
authors.forename: Bernard
authors.initials: B
authors.lastname: Monties
authors.forename: Phillipe
authors.initials: P
authors.lastname: Debeire
authors.forename: Bernard
authors.initials: B
authors.lastname: Cathala
mesh_terms: D002482:Cellulose / Q000737:chemistry / Q000378:metabolism*; D004058:Diffusion; D041822:Gluconacetobacter xylinus / Q000737:chemistry; D006861:Hydrogen Peroxide / Q000378:metabolism; D008031:Lignin / Q000737:chemistry / Q000648:ultrastructure; D008855:Microscopy, Electron, Scanning; D010368:Pectins / Q000737:chemistry / Q000378:metabolism*; D009195:Peroxidase / Q000378:metabolism; D010636:Phenols / Q000378:metabolism; D011108:Polymers / Q000737:chemistry / Q000378:metabolism*
chemical_list: D010636:Phenols; D011108:Polymers; D010368:Pectins; D002482:Cellulose; D008031:Lignin; D006861:Hydrogen Peroxide; C010559:coniferyl alcohol; D009195:Peroxidase