Comparison of antifungal and antioxidant activities of Acacia mangium and A. auriculiformis heartwood extracts.
J Chem Ecol
; 31(4): 789-804, 2005 Apr.
Article
en En
| MEDLINE
| ID: mdl-16124251
ABSTRACT
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.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Extractos Vegetales
/
Peroxidación de Lípido
/
Acacia
/
Antifúngicos
/
Antioxidantes
Idioma:
En
Revista:
J Chem Ecol
Año:
2005
Tipo del documento:
Article
País de afiliación:
Japón