Efficiency of three resin fractions from Aucoumea Klaineana Pierre, Canarium schweinfurthii Engl and Dacryodes edulis (G. Don) H. J. Lam from Gabon combined with Tebuconazole as wood preservatives

IRG/WP 22-10998

W F Bedounguindzi, K Candelier, P Edou Engonga, S Dumarcay, M-F Thevenon, P Gerardin

Pure resins from Aucoumea Klaineana, Canarium schweinfurthii and Dacryodes edulis were harvested and then hydro-distilled to obtain essential oils and purified resins fractions. Due to the potential leaching and volatility hazards of the compounds that constitute these fractions, resins and essential oils were combined with tebuconazole to produce both antifungal and anti-termite wood preservatives formulations. Beech and scots pine wood block samples were impregnated by these different formulations and expose to Trametes versicolor and Coniophora puteana, respectively. Treated and control scots pine samples were also expose to termite (Reticulitermes flavipes). The results indicate that the use of aqueous formulations of the three fractions of the different Gabonese wood species combined to tebuconazole improves the wood resistance against termites and Coniophora puteana. Currently, the promising protection obtained would be limited to indoor applications since the different formulations should be formulated to be resistant to leaching.


Keywords: essential oil, fungi, tebuconazole, termite, resin, wood preservative

Conference: 22-05-29/06-02 Bled, Slovenia


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