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    Author(s): Christopher G. HuntSteven LacherKolby HirthLinda LorenzKenneth E. Hammel
    Date: 2017
    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)

    Description

    The 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).

    Publication Notes

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Hunt, 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.

    Keywords

    Decay resistance, diffusion, free volume, acetylated wood

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https://www.fs.usda.gov/treesearch/pubs/55196