Wood under fresh water: Effect on the chemical properties and on decay resistance

This study aimed to evaluate the effect of waterlogging on the chemical properties and on decay resistance of two fast-growing eucalypt species. Samples of spotted gum and rose gum wood were placed underwater and taken out at different times: after 4, 8 and 12 months. Chemical properties were perfor...

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Bibliographic Details
Published in:Maderas 2016-01, Vol.18 (ahead), p.733-742
Main Authors: Lourençon, Tainise V, dos Santos, Patrícia S. B, Labidi, Jalel, Gatto, Darci A, Gonçalves, Margarete R. F
Format: Article
Language:English
Subjects:
Chemical composition
decay fungi
MATERIALS SCIENCE, PAPER & WOOD
waterlogged wood
wood extractives
wood underwater
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Summary:This study aimed to evaluate the effect of waterlogging on the chemical properties and on decay resistance of two fast-growing eucalypt species. Samples of spotted gum and rose gum wood were placed underwater and taken out at different times: after 4, 8 and 12 months. Chemical properties were performed via wet chemical quantification (Tappi standards), monomeric sugars by HPLC, and qualitative evaluation of extractives by Py-GC/MS and ATR-IR spectroscopy; biological performance was investigated using Trametes versicolor and Gloeophyllum trabeum rot fungi. The results showed slight changes to the chemical properties of both wood species, with an increase in lignin represented by the reduction of sugars due to waterlogging. Both species showed higher susceptibility to Gloeophyllum trabeum mainly in the sapwood, with no influence on decay resistance due the waterlogging.
ISSN:0718-221X
0717-3644
0718-221X
DOI:10.4067/S0718-221X2016005000064