Comparison of Antifungal and Antioxidant Activities of Acacia mangium and A. auriculiformis Heartwood Extracts

被引：0

作者：

Rie Mihara

Karen M. Barry

Caroline L. Mohammed

Tohru Mitsunaga

机构：

[1] Mie University,Faculty of Bioresources, Department of Environment Science and Engineering

[2] CRC for Sustainable Production Forestry,School of Agricultural Science

[3] University of Tasmania,undefined

[4] CSIRO Forestry and Forest Products,undefined

来源：

Journal of Chemical Ecology | 2005年 / 31卷

关键词：

heartrot; heartwood extracts; flavanone; antifungal activity; antioxidant; laccase inhibition;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The effect of heartwood extracts from Acacia mangium (heartrot-susceptible) and A. auriculiformis (heartrot-resistant) was examined on the growth of wood rotting fungi with in vitro assays. A. auriculiformis heartwood extracts had higher antifungal activity than A. mangium. The compounds 3,4′,7,8-tetrahydroxyflavanone and teracacidin (the most abundant flavonoids in both species) showed antifungal activity. A. auriculiformis contained higher levels of these flavonoids (3.5- and 43-fold higher, respectively) than A. mangium. This suggests that higher levels of these compounds may contribute to heartrot resistance. Furthermore, both flavonoids had strong 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity and laccase inhibition. This suggests that the antifungal mechanism of these compounds may involve inhibition of fungal growth by quenching of free radicals produced by the extracellular fungal enzyme laccase.

引用

页码：789 / 804

页数：15

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