Composition and antimicrobial activities of the leaf essential oil of Machilus zuihoensis from Taiwan

摘要: This study investigated the chemical composition, and antimicrobial anti-wood-decay fungal activities of essential oil isolated from leaf endemic Machilus zuihoensis Hayata, Lauraceae, Taiwan. The fresh leaves M. was using hydrodistillation in a Clevenger-type apparatus, characterized by GC-FID GC-MS. A total 104 compounds were identified, representing 100% oil. main components identified n-dodecanal (23.8%) (E)-nerolidol (10.5%). activity tested disc diffusion method micro-broth dilution against ten microbial species (Bacillus cereus, Staphylococcus aureus, S. epidermidis, Escherichia coli, Enterobacter aerogenes, Klebsiella pneumoniae, Pseudomonas aeruginosa, Vibrio parahaemolyticus, Aspergillus niger, Candida albicans), respectively. exhibited strong growth suppression Gram-positive bacteria yeast with inhibition zones 35~43 mm to MIC values 125 µg mL-1, also evaluated. Results showed that demonstrated excellent four wood-decay-fungi (Trametes versicolor, Phaneochaete chrysosporium, Phaeolus schweintizii, Lenzites sulphureu). For anti-wooddecay oil, active source determined be τ-cadinol, β-eudesmol, n-dodecanal.