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Mode of action of brown rot decay resistance of acetylated wood: resistance to Fenton's reagent.

Authors :
Hosseinpourpia, Reza
Mai, Carsten
Source :
Wood Science & Technology. Mar2016, Vol. 50 Issue 2, p413-426. 14p.
Publication Year :
2016

Abstract

Acetylation is known to enhance the resistance of wood to brown rot fungi. As initial decay by some brown rot fungi is assumed to be caused by the Fenton reaction, pine micro-veneers acetylated to various weight percent gains (WPG) were exposed in a solution containing iron ions and hydrogen peroxide, i.e., Fenton's reagent. Mass loss and tensile strength loss as well as the decomposition of hydrogen peroxide within the incubation time decreased with increasing WPG of the veneers. Incubation of untreated and acetylated veneers in acetate buffer containing ferric ions without HO revealed that the modification strongly reduced the uptake of Fe ions by the wood cell wall. FT-IR analysis indicated oxidation of the unmodified control veneers but did not show predominant decay of specific cell wall components. Spectra of acetylated veneers did not reveal any significant changes induced by Fenton's reagent. It was concluded that one possible reason for the enhanced resistance of acetylated wood to the Fenton reaction could be the reduced or almost completely prevented uptake of Fe ions by the wood cell wall. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00437719
Volume :
50
Issue :
2
Database :
Academic Search Index
Journal :
Wood Science & Technology
Publication Type :
Academic Journal
Accession number :
112926107
Full Text :
https://doi.org/10.1007/s00226-015-0790-0