M. Rättö, A.-C. Ritschkoff, L. Viikari
Enzymatically polymerized phenolic compounds as wood preservatives
Phenolic compounds were studied as natural preservatives
against wood decaying fungi. Vanillin and tannin
decreased the growth of the test organisms Coniophora puteana and Coriolus versicolor and decreased the
weight losses caused by these organisms in wood
blocks. Both compounds were, however, leached in standard
washing tests, and higher weight losses were
observed in leached samples. Enzymatic polymerization
with laccase was used as a means of binding the phenolic
preservatives into the wood. Using an optimized
laccase dosage, wood impregnation with enzymatically
polymerized vanillin reduced the weight loss by C. puteana from 25% to 5%.
Holzforschung, Walter de Gruyter
Print ISSN: 0018-3830
Volume: 58, 07/2004
Pages: 440 - 445
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