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FT-IR imaging microscopy to localise and characterise simultaneous and selective white-rot decay within spruce wood cells
-
Karin Fackler
,
Jasna S. Stevanic
Published/Copyright:
February 9, 2011
Abstract
Spruce wood that had been degraded by white-rot fungi (Trametes versicolor or Ceriporiopsis subvermispora) and suffered mass losses up to 17% was investigated by transmission Fourier transform infrared (FT-IR) imaging microscopy. A significant marker during incipient simultaneous white-rot (T. versicolor) was the cleavage of glycosidic bonds of polysaccharides that preceded their metabolisation. Simultaneous white-rot processes were also characterised by a relative decrease of the overall lignin content and a relative accumulation of wood polysaccharides. No early marker was found for selective white-rot (C. subvermispora) that removes mainly lignin by an oxidative process. This feature was detected only in wood samples exhibiting mass losses higher than 12%. Furthermore, it was shown, that simultaneous and selective white-rot processes were unevenly distributed within the wood samples but quite evenly distributed within single tracheids.
Keywords: Ceriporiopsis subvermispora; FT-IR imaging microscopy; multivariate image analysis; Trametes versicolor; white-rot; wood degradation
Received: 2010-9-10
Accepted: 2010-12-21
Published Online: 2011-02-09
Published Online: 2011-02-09
Published in Print: 2011-05-01
©2011 by Walter de Gruyter Berlin New York
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Keywords for this article
Ceriporiopsis subvermispora;
FT-IR imaging microscopy;
multivariate image analysis;
Trametes versicolor;
white-rot;
wood degradation
Articles in the same Issue
- Publisher’s Note
- Publisher’s Note
- ORIGINAL ARTICLES
- Brightness reversion of eucalyptus kraft pulp: Effect of carbonyl groups generated by hypochlorous acid oxidation
- MgSO4 vs. Mg(OH)2 as a cellulose protector in oxygen delignification
- Hydrogen peroxide and supercritical carbon dioxide: a new bleaching stage for Eucalyptus kraft-O2 pulps
- Preparation and physical characterization of strongly swellable oligo(oxyethylene) lignin hydrogels
- Activation of pine kraft lignin by Fenton-type oxidation for cross-linking with oligo(oxyethylene) diglycidyl ether
- Determination of pectin content of eucalyptus wood
- Theory of transport processes in wood below the fiber saturation point. Physical background on the microscale and its macroscopic description
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