Composition and Antimicrobial Activity of the Leaf Essential oil of Litsea kostermansii from Taiwan

The hydrodistillated leaf essential oil of Litsea kostermansii was analyzed to determine its composition and yield. Seventy-three compounds were identified, the main components being β-eudesmol (22.5%), γ-eudesmol (18.6%), δ-selinene (8.5%), α-eudesmol (6.0%), and γ-muurolene (4.7%). Oxygenated sesquiterpenes (66.2%) and sesquiterpene hydrocarbons (32.8%) were the predominant groups of compounds. The leaf oil exhibited excellent antimicrobial activities.

本研究对琼楠叶木姜子（Litsea kostermansii）的水蒸馏提取叶片精油进行分析，以明确其化学成分与得率。共鉴定出73种化合物，主要成分包括β-桉叶醇（β-eudesmol，22.5%）、γ-桉叶醇（γ-eudesmol，18.6%）、δ-芹子烯（δ-selinene，8.5%）、α-桉叶醇（α-eudesmol，6.0%）以及γ-穆罗烯（γ-muurolene，4.7%）。氧化倍半萜（oxygenated sesquiterpenes，66.2%）与倍半萜烃类（sesquiterpene hydrocarbons，32.8%）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。