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

Revista Brasileira de Farmacognosia

Liao, Pei-Chun¹  Su, Yu-Chang¹  National Chung Hsing University, Taichung, Taiwan¹  National Ilan University, Taiwan¹  Taiwan Forestry Research Institute, Taiwan¹  Ho, Chen-Lung¹ 

关键词: antimicrobial activity;    anti-wood-decay fungal activity;    essential oil;    Lauraceae;    Machilus zuihoensis;   

DOI  :  10.1590/S0102-695X2011005000213

来源: Sociedade Brasileira de Farmacognosia

【 摘 要 】

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

【 授权许可】

Unknown