Efficacy of tannin in fixing boron in wood: Fungal and termite resistance,

Tondi Gianluca, Wieland Stefanie, Leménager Nicolas, Petutschnigg Alexander, Pizzi Antonio, Thévenon Marie-France. 2012. Efficacy of tannin in fixing boron in wood: Fungal and termite resistance,. BioResources, 7 (1) : 1238-1252.

Quartile : Q1, Sujet : MATERIALS SCIENCE, PAPER & WOOD

Résumé : The easy leaching of boron from wood preservation formulations has limited the use of this highly active fungicide. The recently discovered adduct with flavonoids allows boron to be retained for longer periods of time within wood and consequently to extend its life. Two different leaching treatments were compared, and the fungal and termite decay were examined. The biological tests showed extremely high resistance of the leached samples against both fungus (Coriolus Versicolor and Coniophora Puteana) and termites (Reticulitermes Santonensis). The retention of 2.5 kg/m³ was determined as the threshold of efficacy of boron in flavonoid-based wood preservative. Furthermore, solid state 13C-NMR analysis of the tannin resin indicated that boron can be covalently fixed to the tannin-hexamine network.

Mots-clés Agrovoc : tannin, acide borique, produit de préservation du bois, fongicide, insecticide, bois, Isoptera, Champignon, Pinus sylvestris, Fagus sylvatica, Acacia mearnsii, composé hétérocyclique

Mots-clés complémentaires : Hexamine

Classification Agris : K50 - Technologie des produits forestiers
J12 - Manutention, transport, stockage et conservation des produits forestiers

Champ stratégique Cirad : Hors axes (2005-2013)

Auteurs et affiliations

• Tondi Gianluca, University of Applied Science (AUT)
• Wieland Stefanie, University of Applied Science (AUT)
• Leménager Nicolas, CIRAD-PERSYST-UPR Bois tropicaux (FRA)
• Petutschnigg Alexander, University of Applied Science (AUT)
• Pizzi Antonio, ENSTIB (FRA)
• Thévenon Marie-France, CIRAD-PERSYST-UPR Bois tropicaux (FRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/563184/)

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