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Wood Colorization through Pressure Treating: The Potential of Extracted Colorants from Spalting Fungi as a Replacement for Woodworkers’ Aniline Dyes

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Title Wood Colorization through Pressure Treating: The Potential of Extracted Colorants from Spalting Fungi as a Replacement for Woodworkers’ Aniline Dyes
Names Robinson, Sara C. (creator)
Hinsch, Eric (creator)
Weber, Genevieve (creator)
Leipus, Kristina (creator)
Cerney, Daniel (creator)
Date Issued 2014-07-24 (iso8601)
Note This is the publisher’s final pdf. The published article is copyrighted by the author(s) and published by MDPI. The published article can be found at: http://www.mdpi.com/journal/materials.
Abstract The extracellular colorants produced by Chlorociboria aeruginosa, Scytalidium
cuboideum, and Scytalidium ganodermophthorum, three commonly utilized spalting fungi,
were tested against a standard woodworker’s aniline dye to determine if the fungal colorants
could be utilized in an effort to find a naturally occurring replacement for the synthetic dye.
Fungal colorants were delivered in two methods within a pressure treater—the first through
solubilization of extracted colorants in dichloromethane, and the second via liquid culture
consisting of water, malt, and the actively growing fungus. Visual external evaluation of
the wood test blocks showed complete surface coloration of all wood species with all
colorants, with the exception of the green colorant (xylindein) from C. aeruginosa in liquid
culture, which did not produce a visible surface color change. The highest changes in
external color came from noble fir, lodgepole pine, port orford cedar and sugar maple with
aniline dye, cottonwood with the yellow colorant in liquid culture, lodgepole pine with the
red colorant in liquid culture, red alder and Oregon maple with the green colorant in
dichloromethane, and sugar maple and port orford cedar with the yellow colorant in
dichloromethane. The aniline dye was superior to the fungal colorants in terms of internal
coloration, although none of the tested compounds were able to completely visually color
the inside of the test blocks.
Genre Article
Access Condition http://creativecommons.org/licenses/by/3.0/us/
Topic Aniline dye
Identifier Robinson, S. C., Hinsch, E., Weber, G., Leipus, K., & Cerney, D. (2014). Wood Colorization through Pressure Treating: The Potential of Extracted Colorants from Spalting Fungi as a Replacement for Woodworkers’ Aniline Dyes. Materials, 7(8), 5427-5437. doi:10.3390/ma7085427

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