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Koenig S. ; Unbehaun H. ; Kerns G. ; Bley Th., Wagenfuehr A.

Xylanase-/cellulase complexes for the production of glue-free medium density fibre boards

Abstract

Taking the example of lignocellulosic fibres from pinewood, we could substitute the addition of resin by employing various hydrolases, especially xylanase plus cellulase from Trichoderma reesei. Differently to the use of oxidases, the polysaccharides of the wood in this case are activated for fibre-to-fibre bonding. Already after a few minutes’ incubation time and less than 3 % of enzyme dosage, there is a substantial improvement in strength and hygroscopic properties of glue-free MDF. The material properties meet approximately the standard of EN 622. We received different results with different xylanase-cellulase-complexes. According to the present results, high activity in xylanase plus high activity in endo-glucanase are necessary for the successful modification of the lignocellulose fibres.
Moscow University Chemistry Bulletin.
2003, Vol. 44, No. 1, P. 72
   

Copyright (C) Chemistry Dept., Moscow State University, 2002
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