Abstract
Background: Two
species of genus Marrubium belonging to the family Lamiaceae, were
studied for their volatile components.
Methods: The
essential oils were extracted from aerial parts of the plants through
hydrodistillation using a Clevenger apparatus. Later, CG and CG-MS analysis
were applied to assess the chemical components of the essential oils.
Results: Analysis of the
M. propinquum essential oil resulted in the identification of 22
components, representing 79.6% of the total essential oil that principally
contained oleic acid (19%), β-caryophyllene (7.4%) and m-tolualdehyde (5.2%).
In the case of M. parviflorum, 20 components were identified,
representing 83% of the M. parviflorum essential oil, among them oleic
acid (11.8%), α-pinene (10.2%) and germacrene D (9.8%) were the main compounds.
Conclusion: Regarding the results of this study in both
essential oils after the non terpenoids, sesquiterpene hydrocarbons possessed
the uppermost portion of the oils. We found some similarities and differences
between M. propinquum and M. parviflorum essential oils and also
in comparison with other species of genus Marrubium which might be due
to different parameters such as agrotechnical factors.