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Chemical extractive compounds determining the brown-rot decay resistance of teak wood

Einfluss der Extraktstoffzusammensetzung auf die Braunfäuleresistenz von Teakholz

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Abstract

The relative importance of extractive content and its chemical compounds in imparting brown-rot decay resistance of teak wood was determined using HPTLC. Total extractive content (12.44%), tectoquinone (0.23%) and naphthoquinone (0.62%) were lower in home garden teak of wet site than of dry site with corresponding values of 15.98%, 0.34% and 1.26% in the latter. The amount of napthoquinone was more consistently correlated with higher decay resistance from the wet to the dry and planted sites implying that napthoquinone is the single most important compound which imparted decay resistance to teak wood against the two brown-rot fungi, viz. Polyporous palustris and Gloeophyllum trabeum.

Zusammenfassung

Der Einfluss des Extraktstoffgehalts von Teakholz und dessen chemischer Zusammensetzung auf die Braunfäuleresistenz wurde mittels Hochleistungsdünnschichtchromatographie (HPTLC) untersucht. Der gesamte Extraktstoffgehalt (12.44%), Tectochinon- (0.23%) und Naphthochinongehalt (0.62%) waren bei im Waldfeldbau angebautem Teakholz auf feuchten Standorten geringer als bei Teakholz von trockenen Standorten, welches einen Extraktstoffgehalt von 15.98%, 0.34% Tectochinon- und 1.25% Naphthochinongehalt aufweist. Die Korrelation zwischen dem Naphthochinonanteil und der Fäuleresistenz war bei Teakholz von trockenen Standorten und Plantagen stärker ausgeprägt als bei Teakholz von feuchten Standorten. Dies weist darauf hin, dass Naphthochinon der Bestandteil mit dem größten Einfluss auf die Fäuleresistenz von Teakholz gegen die zwei Braunfäulepilzarten Polyporous palustris und Gloeophyllum trabeum ist.

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  1. Division of Forest Utilization, Kerala Forest Research Institute, Peechi, 680 653, Kerala, India

    P. K. Thulasidas & K. M. Bhat

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  1. P. K. Thulasidas
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  2. K. M. Bhat
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Correspondence to P. K. Thulasidas.

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Thulasidas, P.K., Bhat, K.M. Chemical extractive compounds determining the brown-rot decay resistance of teak wood . Holz Roh Werkst 65, 121–124 (2007). https://doi.org/10.1007/s00107-006-0127-7

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  • DOI: https://doi.org/10.1007/s00107-006-0127-7

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