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