Composition and Biological Activity of Essential Oils from Lippia origanoides H.B.K.

摘要

Analyses of the leaf oils from three colletions of Lippia origanoides H.B.K.by GC/MS and ~1H-and ~(13)C-NMR showed a similar chemical composition.Carvacrol(33.5-42.9%)was identified as the major component together with y-terpinene(8.0-10.5%),thymol(5.1-8.4%),methyl thymol(6.1-8.7%)and p-cymene(11.9-15.8%).In vitro evaluation of the oils showed significant antimicrobial activity against Escherichia coli,Staphylococus aureus,Staphylococus aureus MRSA,Candida albicans and Candida tropicalis.