Skip to content
Licensed Unlicensed Requires Authentication Published by De Gruyter February 9, 2011

FT-IR imaging microscopy to localise and characterise simultaneous and selective white-rot decay within spruce wood cells

  • Karin Fackler EMAIL logo , Jasna S. Stevanic , Thomas Ters , Barbara Hinterstoisser , Manfred Schwanninger and Lennart Salmén
From the journal Holzforschung

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.


Corresponding author. Vienna University of Technology, Institute of Chemical Engineering, Getreidemarkt 9-166-4, A-1060 Vienna, Austria

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

Downloaded on 4.3.2024 from https://www.degruyter.com/document/doi/10.1515/hf.2011.048/html
Scroll to top button