The hydrodistilled leaf essential oil of Machilus philippinensis was analyzed to determine its composition and yield. Seventy compounds were identified, the main ones being beta-caryophyllene (13.6%), alpha-pinene (12.0%), alpha-cadinol (7.4%), cis-ocimene (7.0%), spathulenol (5.6%), (E)-nerolidol (5.3%), tau-cadinol (4.8%) and beta-pinene (4.5%). Monoterpene hydrocarbons (36.1%) and oxygenated sesquiterpenes (33.0%) were the predominant groups of compounds. The leaf oil exhibited excellent anti-wood-decay fungal activities.
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