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Licensed Unlicensed Requires Authentication Published by De Gruyter January 14, 2010

Extractives of the tropical wood wallaba (Eperua falcata Aubl.) as natural anti-swelling agents

  • Mariana Royer , Didier Stien , Jacques Beauchêne , Gaëtan Herbette , J. Paul McLean , Anne Thibaut and Bernard Thibaut
From the journal Holzforschung

Abstract

Wallaba (Eperua falcata) is a tropical wood that is known to have naturally high moisture related dimensional stability. Samples of wallaba heartwood were subjected to differential solvent extraction. Wood pieces that were extracted with methanol showed significantly greater swelling following rehydration from oven dry to 96% relative humidity than non-extracted samples and samples extracted with other solvents. Methanol soluble wallaba heartwood extract was purified by HPLC and the compounds present were characterized by NMR spectroscopy. The structure of 13 compounds in methanol extract was identified. The relative proportion of polar compounds in methanol extract was found to be high. The compounds identified are proposed to bind to the polymeric cell wall by means of multiple hydrogen bonds restricting the association of water and therefore act as natural anti-swelling agents.


Corresponding author. CNRS, UMR Ecofog, Institut d'Enseignement Supérieur de la Guyane, BP 792, 97337 Cayenne Cedex, France (French Guiana) Phone: +594-594-297517 Fax: +594-594-284786

Received: 2009-6-22
Accepted: 2009-10-16
Published Online: 2010-01-14
Published Online: 2010-01-14
Published in Print: 2010-02-01

©2010 by Walter de Gruyter Berlin New York

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