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Abstract
Chemical composition of Hyptis spicigera, H. suaveolens and Eucalyptus camaldulensis essential oils isolated by hydrodistillation of plant leaves from Senegal were determined by GC-MS / GC-FID. A total of twenty-nine, thirty-seven and thirty-four components were identified for H. spicigera, H. suaveolens and E. camaldulensis, respectively. H. spicigera oil contained as main components α-pinene (38.9 %), β- pinene (14.7 %) and caryophyllene (12.6 %). For H. suaveolens we obtained at first, in February 1,8-Cineole (19.8%), caryophyllene (16.9 %) and sabinene (11.6% ); at March, sabinene and caryophyllene represented 27.9 % and 20.8 % respectively while 1,8-Cineole decreased from 19.8 to 1.1%. The most important component revealed with E. camaldulensis were spathulenol (31.6 %), p-cymene (11.3 %), bicyclogermacrene (8.2 %) and β-selinene (7.9 %).