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Naturally durable heartwood: evidence for a proposed dual defensive function of the extractives

Naturally durable heartwood: evidence for a proposed dual defensive function of the extractives,10.1016/S0031-9422(99)00622-6,Phytochemistry,Tor P. Sc

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Naturally durable heartwood: evidence for a proposed dual defensive function of the extractives   (Citations: 40)
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We previously proposed that extractives in highly durable heartwood may protect wood against fungal colonization and subsequent degradation by dual mechanisms: the extractives have some fungicidal activity and are also free radical scavengers (antioxidants). In short-term laboratory decay tests using two different wood species and decay fungi, the antioxidant 2,6-dimethyl-di-tert-butyl-4-methylphenol (BHT) alone had little or no preservative effect. In contrast, the combination of BHT with different organic commercial biocides always showed an increase in efficacy compared to the organic biocide alone. Consequently, we conclude that the combination of a commercial antioxidant and biocide is synergistic. This implies that extractives may protect wood by more than simply being fungicidal.
Journal: Phytochemistry , vol. 54, no. 1, pp. 47-52, 2000
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