JOURNAL 529


Records of Natural Products
VOLUME & ISSUE
Year: 2013 Issue: 1 January-March
PAGES
p.49 - 53
STATISTICS
Viewed 1384 times.
AUTHORS
    Pornpun Siramon, Yoshito Ohtani and Hideaki Ichiura
PDF OF ARTICLE

GRAPHICAL ABSTRACT


ABSTRACT


The present study was performed to evaluate antifungal activities of leaf essential oils from Eucalyptus camaldulensis Dehnh. originating from Thailand against 9 fungal strains. The leaf samples were collected from 3 different clones. The fungi examined in this study were (1) household molds: Aspergillus niger , Cladosporium cladosporioidesChaetomium globosum and Penicillium citrinum, (2) wood rot fungi: Fomitopsis palustris and Trametes versicolor, (3) plant pathogenic fungi: Fusarium oxysporumThanatephorus cucumeris and Rhizopus oryzae. The results revealed that E. camaldulensis leaf oils provided 100% inhibition of the mycelial growth of T. cucumeris (5 mg/m L ), and C. globosum (10 mg/m L ). No inhibition effect was observed against R. oryzae even at the concentration of 10 mg/m L . A medium to low inhibitory activities against the mycelial growth of the six other fungi were found. The essential oils of E. camaldulensis leaf have potency as an antimicrobial agent especially against seedling blight pathogens and it could also act as moderate agents against household molds and wood rot fungi. Therefore, even if they need relatively higher concentration for the controlling agents, they deserve as the alternatives to hazardous synthetic fungicides from the ecological viewpoints.

KEYWORDS
  • Antifungal property
  • eucalyptus camaldulensis
  • household molds
  • leaf essential oil
  • plant pathogenic fungi
  • wood rot fungi.