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Anti-termite and anti-fungal bio-sourced wood preservation ingredients from Dacryodes edulis (G. Don) H.J. Lam resin

Authors
  • Bédounguindzi, Walter Fiacre1
  • Candelier, Kévin2, 3
  • Edou Engonga, Prosper4
  • Dumarçay, Stéphane1
  • Thévenon, Marie-France2, 3
  • Gérardin, Philippe1
  • 1 Faculté des Sciences et Technologies, BP 70239, 54506 , (France)
  • 2 CIRAD, UPR BioWooEB, F-34398 , (France)
  • 3 Univ. Montpellier, CIRAD, France , (France)
  • 4 LAPLUS, Laboratoire Pluridisciplinaire des Sciences, Ecole Normale Supérieure de Libreville, BP 17009 , (Gabon)
Type
Published Article
Journal
Holzforschung
Publisher
De Gruyter
Publication Date
Jan 15, 2020
Volume
74
Issue
8
Pages
745–753
Identifiers
DOI: 10.1515/hf-2019-0106
Source
De Gruyter
Keywords
License
Yellow

Abstract

Dacryodes edulis (G. Don) H.J. Lam resin was hydro-distilled to recover essential oil (EO), and further purified to produce a heavy fraction constituting less volatile compounds. Chemical composition was investigated by gas chromatography-mass spectrometry (GC-MS), and indicated that different monoterpenes and triterpenes were present depending on the analyzed fraction. Bioassays were performed on the different fractions to evaluate their anti-fungal and anti-termite properties. Results indicated that crude resin, its heavy fraction and its EO all had proved termicidal properties, which decrease on drying for EO and crude resin due to evaporation of monoterpenes. Conversely, no anti-fungal properties were observed for any fraction. Dacryodes edulis resin is therefore a new valuable bioactive ingredient for the formulation of wood protection products with anti-termite properties.

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