Abstract:
<p align="justify"> The essential oil from the leaves of C. ambrosioides of North Central Nigeria was obtained by hydro-distillation using Clevenger apparatus. The oil was analyzed by a combination of GC and GCMS. Nineteen components amounting to 98.37% of the total oil were identified. The main constituents of the North Central Nigeria grown C.ambrosioides are 2-Carene(17.80%), 2-bornene(14. 79%), para-Cymene(12.93%), alfa-Terpinene(8.98%), Cyclohexene-4-methyl-3-(1-methylethylidene)(7.94%), alfa-Terpinolene(7.90%), gama-Terpinene (6.94%). The oil was found to be a yellow liquid, the obtained yield is 1.35% w/w based on the dry weight. The preliminary phytochemical investigation showed that C.ambrosioides methanolic leaf extract contains some secondary metabolites such as Flavonoids, Terpenoids, Steroids, Alkaloids, and Saponins. The result justified the use of C. ambrosioides in treating various infectious diseases. </p>