Aromatic Plants of Tropical Central Africa. III. Constituents of the Essential Oil of the Leaves ofTithonia diversifolia(Hemsl.) A. Gray from Cameroon

Abstract
The composition of the essential oil from the leaves of Tithonia diversifolia were studied by capillary gas chromatography. The analysis using a combination of retention indices and combined GC/MS led to the identification of 20 components. The oil contains mainly monoterpenoids (88.2%) out of which 87.4% are monoterpene hydrocarbons and some sesquiterpene hydrocarbons (8%). The major constituent was (Z)-β-ocimene (40.2%).