Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 495484
Title Enzymatic modification of different lignins through oxidative coupling with hydrophilic compounds
Author(s) Fiţigəu, Ionita Firuta; Boeriu, Carmen Gabriela; Peter, Francisc
Source Macromolecular Symposia 352 (2015)1. - ISSN 1022-1360 - p. 78 - 86.
DOI http://dx.doi.org/10.1002/masy.201400157
Department(s) FBR Sustainable Chemistry & Technology
VLAG
Publication type Refereed Article in a scientific journal
Publication year 2015
Keyword(s) grafting - laccase - lignin - oxidative coupling
Abstract

The enzymatic oxidative coupling of five technical lignins from different sources and with different molecular properties, with glucosamine and the tripeptide glycil-tyrosyl-glycine was studied in acetone/water mixture, using laccase as catalyst. The modified lignin was isolated and the product was characterized by means of size exclusion chromatography, FT-IR and 31P-NMR, in order to evidence the main lignin modifications after laccase coupling reactions. An important increase of the molecular weight and significant structural modifications were observed for the product obtained after the coupling reactions of Organosolv Hardwood Lignin and Alkali pretreated Wheat straw Lignin with glucosamine and glycil-tyrosyl-glycine, demonstrating the achievement of the modification reactions.

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