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Exploring the hypothesis that limiting diffusion of fungal oxidants underlies decay resistance in acetylated woodAuthor(s): Christopher G. Hunt; Steven Lacher; Kolby Hirth; Linda Lorenz; Kenneth E. Hammel
Source: In: Proceedings, COST action FP1407 - 3rd conference, Wood modification research and applications. Kuchl, Austria: Salzburg University of Applied Sciences: 37-39.
Publication Series: Paper (invited, offered, keynote)
Station: Forest Products Laboratory
PDF: Download Publication (2.0 MB)
DescriptionThe mechanisms by which chemical modifications, specifically acetylation, improve the decay resistance of wood are a topic of active research. In the early stages of decay, fungi secrete lowmolecular- weight oxidants or oxidant precursors. These oxidants diffuse through the wet wood cell wall and oxidize cell wall polymers, which enable the decay process to proceed. One hypothesis states that acetylation stops decay by dramatically inhibiting the diffusion of these oxidants through the cell wall (Zeiinka et. al. 2016). Data showing a drastic difference in Fe uptake from solution between control and acetylated wood appear to support this (Hoseinipour and Mai 2016).
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CitationHunt, Christopher G.; Lacher, Steven; Hirth, Kolby; Lorenz, Linda; Hammel, Kenneth E. 2017. Exploring the hypothesis that limiting diffusion of fungal oxidants underlies decay resistance in acetylated wood. In: Proceedings, COST action FP1407 - 3rd conference, Wood modification research and applications. Kuchl, Austria: Salzburg University of Applied Sciences: 37-39.
KeywordsDecay resistance, diffusion, free volume, acetylated wood
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- Understanding decay resistance, dimensional stability and strength changes in heat treated and acetylated wood
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