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Wood Science and Technology

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01-01-2014 | Original

Potential of laccase for modification of Eucalyptus globulus wood: a XPS study

Authors: M. Fernández-Fernández, M. A. Sanromán, D. Moldes

Published in: Wood Science and Technology | Issue 1/2014

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Abstract

The influence of a commercial laccase on the grafting of 4-chloro-2-methoxyphenol, a model compound, onto Eucalyptus globulus sapwood was evaluated by X-ray photoelectron spectroscopy. The grafting was carried out on extracted and non-extracted wood samples. The extraction procedure modified the surface composition due to extractives removal but with high data dispersion. The laccase-mediated grafting of the chlorophenol was demonstrated by the decrease in O/C ratio and the presence of Cl in wood surface after the enzymatic wood treatment. Laccase seemed to be adsorbed suggesting a possible competition between adsorption and grafting processes. The extractive compounds have no effect on the enzymatic grafting since similar Cl amount was analyzed in extracted and non-extracted wood. This enzymatic grafting methodology opens up new possibilities for wood surface modification in order to obtain new wood products with sustainable technologies and mild conditions.

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Title: Potential of laccase for modification of Eucalyptus globulus wood: a XPS study
Authors: M. Fernández-Fernández
M. A. Sanromán
D. Moldes
Publication date: 01-01-2014
Publisher: Springer Berlin Heidelberg
Published in: Wood Science and Technology / Issue 1/2014
Print ISSN: 0043-7719
Electronic ISSN: 1432-5225
DOI: https://doi.org/10.1007/s00226-013-0593-0

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