Composition and antimicrobial activity of the essential oil of Origanum × dolichosiphon P. H. Davis

Abstract

The essential oil obtained by hydrodistillation from aerial parts of Origanum × dolichosiphon P. H. Davis (Lamiaceae), a hybrid of O. amanum Post × O. laevigatum Boiss., was analyzed by GC/MS. Ninety-five compounds were characterized representing 92% of the oil. The major compounds were bicyclogermacrene (19.9%), β-caryophyllene (13.0%), and germacrene D (10.8%). The antimicrobial activity of the oil was also determined.