Aromatic plants of tropical central Africa. IV. Essential oils of Eupatorium odoratum L. from Cameroon and Congo
1992
Lamaty, G. | Menut, C. | Amvam Zollo, P.H. | Kuiate, J.R. | Bessiere, J.M. | Ouamba, J.M. | Silou, T.
The chemical composition of the essential oils, which was obtained from the leaves of Eupatorium odoratum L. collected in Cameroon and the Congo, were examined by capillary gas chromatography and combined GC/MS. The two oils were distinguished by the presence of C12 compounds rarely found in essential oils: pregeijerene and geijerene represent 34.1% of the essential oil obtained from the leaves collected in Cameroon (Sample A) and 19% of the one from the Congo (Sample B). Besides these compounds, oil A contained mainly alpha-pinene (14.3%) and gamma-muurolene (9.8%); whereas, oil B was characterized by a high content of aromatic compounds (up to 40%) with p-cymene (22.2%) and thymyl acetate (15.8%) being the most dominant.
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