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Effect of Punica granatum peel and Melia azedarach bark extracts on durability of European beech and maritime pine

Authors
  • Lajnef, Lilia1, 2
  • Caceres, Isaura1
  • Trinsoutrot, Pierre1
  • Charrier-El Bouhtoury, Fatima1
  • Ayed, Naceur2
  • Charrier, Bertrand1
  • 1 CNRS/UNIV PAU & PAYS ADOUR, Institut des Sciences Analytiques et de Physicochimie pour l’Environnement et les Matériaux, XYLOMAT UMR 5254, Mont de Marsan, 40004, France , Mont de Marsan (France)
  • 2 Unité de Recherche de Chimie Industrielle Organique et Alimentaire 00UR/1201, Institut National des Sciences Appliquées et de Technologie INSAT, Centre Urbain Nord, Charguia, Tunis, Tunisia , Tunis (Tunisia)
Type
Published Article
Journal
European Journal of Wood and Wood Products
Publisher
Springer Berlin Heidelberg
Publication Date
Jul 28, 2018
Volume
76
Issue
6
Pages
1725–1735
Identifiers
DOI: 10.1007/s00107-018-1340-x
Source
Springer Nature
License
Yellow

Abstract

A method to improve wood durability using natural extracts was evaluated. Wood deterioration is a condition caused by several abiotic and biotic factors including fungal contamination. To date, approaches aiming at the reduction of these contaminants mainly involve the use of chemicals agents. Natural products could represent an alternative strategy. Aqueous extracts of Punica granatum L. (pomegranate) peel and Melia azedarach L. barks were evaluated as antifungal agents to improve natural durability of beech wood and maritime pine. To evaluate the effect of treatments under simulated accelerated ageing of wood by natural conditions, impregnation and leaching tests were performed. Results demonstrated that samples impregnated with pomegranate or M. azedarach solutions notably increased the biological resistance of wood in a dose-dependent manner. These results were confirmed by the reduction in weight losses in treated samples even after 6 weeks of fungal exposure. Moreover, after leaching tests, 20 and 7% (w/v) of pomegranate and M. azedarach extract solutions were demonstrated as the better concentrations to enhance wood durability. Total phenol content and characterization of the phenolic compounds in both, natural extracts and wood samples were analyzed by Folin–Ciocalteu assay and HPLC-DAD. In conclusion, it was demonstrated that the present method can be considered as an effective treatment to increase wood durability while it proposes the valorization of natural extractives in wood industry.

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