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Licensed Unlicensed Requires Authentication Published by De Gruyter May 20, 2011

Fungal pretreatment of pine wood to reduce the emission of volatile organic compounds

11th EWLP, Hamburg, Germany, August 16–19, 2010

Daniel Stratev, Cornelia Gradinger, Thomas Ters, Karin Fackler, Thomas Kuncinger and Ewald Srebotnik
From the journal

Abstract

Sterilized pine wood strands were treated with the ascomycete Ophiostoma piliferum (Cartapip 97™) in an attempt to reduce aldehyde emissions through degradation of aldehyde-forming precursors. Wooden boards were then produced from the treated strands by means of a laboratory press. VOC emissions of these boards were characterized and the concentrations of seven major substances were followed for a period of 28 days in Markes μ-CTE micro-chambers employing Tenax-TDAS/GC/MS analytics. Boards made from treated strands showed a highly significant (P<0.001) reduction in aldehyde emissions by 70% compared to the control boards, while differences in the monoterpene emissions were not significant (P>0.05). Wood extractives from treated and untreated strands were also analyzed by GC/MS after milling and acetone/water extraction. A marked decrease of C18 unsaturated fatty acids was detected in agreement with the reduction of aldehyde emissions, and the monosaccharides as indicators of fungal growth were depleted and stilbenes and lignans were partially degraded.


Corresponding author. Institute of Chemical Engineering, Vienna University of Technology, Gumpendorfer Str. 1a, 1060 Vienna, Austria

Received: 2010-10-31
Accepted: 2011-3-25
Published Online: 2011-05-20
Published Online: 2011-05-20
Published in Print: 2011-06-01

©2011 by Walter de Gruyter Berlin Boston

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