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The wood preservative potential of long-lasting Amazonian wood extracts

Rodrigues A.M.S., Stien D., Eparvier V., Espindola L.S., Beauchêne J., Amusant N., Leménager N., Baudasse C., Raguin L.. 2012. International Biodeterioration and Biodegradation, 75 : p. 146-149.

Investigations were carried out on the efficacy of extracts from seven Amazonian woods (Bagassa guianensis, Manilkara huberi, Sextonia rubra, Vouacapoua americana, Andira surinamensis, Handroanthus serratifolius, and Qualea rosea) with varying natural durability to reduce soft-rot degradation in a 6-wk soil-bed test. Six of the wood extracts had shown efficacy against soft-rot fungi. In particular, the preservation efficacies of B. guianensis, H. serratifolius, and S. rubra extracts were highly significant up to retention levels of 23, 25, and 12 kg m?3, respectively. Three extracts (A. surinamensis, H. serratifolius, and Q. rosea) were then tested against Gloeophyllum trabeum (brown rot) and Trametes versicolor (white rot), in an agar-block test. H. serratifolius wood extract was very efficient at protecting P. sylvestris samples at 5.1 kg m?3 against the brown rot. This extract could be used as a basis for new wood protectant formulations. (Résumé d'auteur)

Mots-clés : pinus sylvestris; fagus sylvatica; schefflera; bois; efficacité; trametes; bignoniaceae; gloeophyllum trabeum; manilkara; forêt tropicale humide; préservation du bois; extrait d'origine végétale; amazonie; guyane française; andira; handroanthus serratifolius; qualea rosea; bagassa guianensis; vouacapoua americana; sextonia rubra; manilkara huberi; trametes versicolor

Thématique : Manutention transport stockage et conservation des produits forestiers; Technologie des produits forestiers; Physiologie et biochimie végétales

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