The chemical composition and antimicrobial activity of the leaf oil of Cupressus lusitanica from Monteverde, Costa Rica

摘要

The essential oils from the leaves of three different individuals of Cupressus lusitanica were obtained by hydrodistillation and analyzed by gas chromatography - mass spectrometry. A total of 49 compounds were identified in the leaf oils. The major components of C. lusitanica leaf oil were α-pinene (40%-82%), limonene (4%-18%), isobornyl acetate (up to 10%) and cis-muurola-4(14),5-diene (up to 7%). The essential oil was screened for antimicrobial activity, and it showed antibacterial activity against Bacillus cereus and antifungal activity against Aspergillus niger.Keywords: cis-muurola-4(14), 5-diene, α-pinene, antimicrobial, composition, Cupressus lusitanica, essential oil, isobornyl acetate, limonene