Characterization of Non-Terpenoids in Marrubium crassidens Boiss. Essential Oil.

PURPOSE Marrubium crassidens, a plant belonging to the family Lamiaceae, was studied for its volatile components present in the aerial parts of the plant during the flowering stage. METHODS The essential oil of the plant obtained through hydrodistillation of the dried plant material was assessed for its chemical composition by GC/MS and GC-FID analyses. RESULTS Twenty-five compounds were identified, which constituted 94.3% of the total oil composition. The major components were identified as, m-tolualdehyde (23.3%), acetophenone (15.8%), nonacosane (13.1%), docosane (7.2%), o-tolualdehyde (4.1%), β-caryophyllene (3.8%) and caryophyllene oxide (3.4%). Non-terpenoids with 75.7% were the most abundant components of the essential oil. CONCLUSION Overall, M. crassidens essential oil revealed to include rather higher proportions of non-terpenoid compounds compared with other species of genus Marrubium.