Composition and antimicrobial and anti-wood-decay fungal activities of the leaf essential oils of Machilus pseudolongifolia from Taiwan

The hydrodistillated leaf essential oil of Machilus pseudolongifolia was analyzed to determine its composition and yield. Seventy compounds were identified, the main components being β-eudesmol (26.8%), α-cadinol (20.8%), viridiflorene (8.9%), α-caryophyllene (5.3%), globulol (4.6%) and β-caryophyllene (4.2%). Oxygenated sesquiterpenes (60.1%) and sesquiterpene hydrocarbons (31.4%) were the predominant groups of compounds. The leaf oil exhibited excellent antimicrobial and anti-wood-decay fungal activities.

本研究对假长序润楠（Machilus pseudolongifolia）经水蒸馏法提取的叶片精油开展成分组成与得率分析，共鉴定出70种化合物。其主要成分为β-桉叶醇(β-eudesmol，26.8%)、α-卡达醇(α-cadinol，20.8%)、绿黄烯(viridiflorene，8.9%)、α-石竹烯(α-caryophyllene，5.3%)、球木醇(globulol，4.6%)以及β-石竹烯(β-caryophyllene，4.2%)。其中氧化倍半萜(oxygenated sesquiterpenes，60.1%)与倍半萜烃(sesquiterpene hydrocarbons，31.4%)为该精油的优势化合物类别。该叶片精油展现出优异的抗菌活性与抗木材腐朽真菌活性。