Aromatic plants of tropical Central Africa. XXIV. Volatile constituents of Acanthospermum hispidum DC from the Congo.
A. hispidum is used in traditional medicine for its anthelmintic and antalgic properties. The essential oils, hydrodistilled from leaves of A. hispidum (collected monthly in the Brazzaville area, Congo), were analysed by GC and GC-MS. The oils were rich in sesquiterpene hydrocarbons (66.3-79.1%), with large to moderate amounts of β-caryophyllene (34.0-42.7%), α-humulene (8.9-12.7%) and their oxides, accompanied by variable amounts of α-bisabolol (3.7-11.2%). Aromatic components including carvacrol, methyl carvacrol and aliphatic aldehydes were found in all samples.