Laccase treatment of Norway spruce wood surface improves resistance and copper fixation of treated wood

• Autorzy: Vaukner Gabrič M. , Boncina T. , Humar M. , Pohleven F.

Identyfikatory

DOI

10.12841/wood.1644-3985.179.10

• Języki publikacji: EN

Abstrakty

EN

The effects of laccase from the white-rot basidiomycete fungus Trametes versicolor on Norway spruce wood (Pices abies) surface were studied. Experiments were performed at room temperature and at pH 4.6, without the addition of mediators. Biological, chemical and physical properties of the treated wood surface were examined by a wood decay test, a scanning electron microscopy (SEM), a Fourier transform infrared (FTIR) spectroscopy and a copper leaching test. Laccase pre-treatment of Norway spruce wood surface was shown to reduce wood decay by brown-rot fungus, Gloeophyllum trabeum and white-rot fungus, Trametes versicolor. SEM images showed expanded wood cell walls, closed pits and a more even surface after laccase treatment. FTIR analysis indicated that laccase not only catalyse depolymerisation of lignin, but also affect other wood cell wall components, such as hemicellulose and cellulose. We showed that laccase treatment altered wood properties in a way that improved wood resistance to decay and prevented leaching of copper from impregnated wood.

Słowa kluczowe

EN

laccase; Trametes versicolor; Norway spruce; wood surface; wood decay; copper leaching

• Wydawca: Sieć Badawcza Łukasiewicz - Poznański Instytut Technologiczny
• Czasopismo: Drewno : prace naukowe, doniesienia, komunikaty
• Rocznik: 2016
• Tom: vol. 59, nr 198
• Strony: 19--33
• Opis fizyczny: Bibliogr. 28 poz., rys., tab.

Twórcy

autor

Vaukner Gabrič M.

• Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia

autor

Boncina T.

• Faculty of Mechanical Engineering, University of Maribor, Maribor, Slovenia

autor

Humar M.

• Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia

autor

Pohleven F.

• Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia

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• List of standards
• EN 1250-2:1994. Wood preservatives – Methods for measuring losses of active ingredients and other preservative ingredients from treated timber – Part 2: Laboratory method for obtaining samples for analysis to measure losses by leaching into water or synthetic sea water
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