Constituents of Essential Oils of Apium graveolens L., Allium cepa L., and Voacanga africana Staph. from Nigeria

Abstract

Abstract In this work, the volatile oils from the plants of Apium graveolens L., Voacanga africana Staph. and Allium cepa L. were analysed for their constituents by GC-MS. Limonene (40.5%), β-selinene (16.3%), cis-ocimene (12.5%) and β-caryophyllene (10.5%) were the main compounds of A. graveolens, while V. africana was predominantly comprised of precocene I (7-Methoxy-2,2-dimethylchromene) (95.2)%. On the other hand, the volatile oil of A. cepa was characterized by sulphur compounds, of which diallyl trisulphide (58.8%), methyl allyl trisulphide (18.5%) and diallyl disulphide (17.7%) were in abundance.