Effectiveness of three Gabonese tree resin fractions combined with tebuconazole as wood preservative formulations

Bedounguindzi Walter Fiacre, Candelier Kévin, Edou Engonga Prosper, Dumarçay Stéphane, Thévenon Marie-France, Gérardin Philippe. 2023. Effectiveness of three Gabonese tree resin fractions combined with tebuconazole as wood preservative formulations. Journal of Wood Chemistry and Technology, 43 (1) : 46-58.

Résumé : Wood treatments based on oleoresins from Aucoumea Klaineana, Canarium schweinfurthii and Dacryodes edulis have shown interesting anti-termites properties but poor resistance to fungi and leaching. Oleoresins were combined with tebuconazole to produce both antifungal and anti-termite wood preservatives formulations with an expected better fixation of chemicals mixtures in the wood. Beech and Scots pine wood block samples were impregnated by these different formulations and exposed to white and brown rot, respectively, as well as to European termite (Reticulitermes flavipes). The use of aqueous formulations of each oleoresin of combined to tebuconazole improved the wood resistance against termites and mainly brown rot. In addition, the best formulation was found by using the raw resin from Aucoumea Klaineana. These results are mainly due to the antifungal activity of tebuconazole. In addition, the presence of antioxidant chemicals in the wood resins inhibits the wood decay fungi growth and acts as enzyme and metabolism inhibitors disturbing the treated wood digestion process by termites. For the future, the promising protection obtained should be formulated to be resistant to leaching.

Mots-clés Agrovoc : préservation du bois, oléorésine, tébuconazole, résistance aux facteurs nuisibles, propriété antifongique, propriété insecticide, Dacryodes edulis, Aucoumea klaineana, Reticulitermes flavipes

Mots-clés complémentaires : Canarium schweinfurthii

Mots-clés libres : Essential oil, Fungi, Tebuconazole, Termite, Resins, Wood preservatives

Classification Agris : K50 - Technologie des produits forestiers
Q60 - Traitement des produits agricoles non alimentaires

Champ stratégique Cirad : CTS 7 (2019-) - Hors champs stratégiques

Agences de financement hors UE : Agence Nationale de la Recherche

Projets sur financement : (FRA) Recherches avancées sur l'arbre et les écosytèmes forestiers

Auteurs et affiliations

• Bedounguindzi Walter Fiacre, Université de Lorraine (FRA)
• Candelier Kévin, CIRAD-PERSYST-UPR BioWooEB (FRA) ORCID: 0000-0002-9328-8511 - auteur correspondant
• Edou Engonga Prosper, Ecole Normale Supérieure de Libreville (GAB)
• Dumarçay Stéphane, Université de Lorraine (FRA)
• Thévenon Marie-France, CIRAD-PERSYST-UPR BioWooEB (FRA)
• Gérardin Philippe, Université de Lorraine (FRA)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/603816/)

Métriques

[ Page générée et mise en cache le 2024-11-30 ]