Chemical Compositions and Physical Characteristics of Volatile Extracts of Leaves of Psidium Guajava Linn and Lantana Camara Linn of Benin

P. guajavaLinn.L. camaraLinn.are twoaromatic plantsthat produce essential oilsandmajor medicinalutilitiesin Benin.Essential oilsobtainedby hydrodistillationofP. guajavaandL. camaraleaves collectedin Beninwere analyzed bygas chromatographyconnected to a flameionization detector(GC/FID) and gas chromatographycoupled with the mass spectrometry (GC/MS). The major compounds(> 10%) identified in the essential oils ofP. guajavaare limonene(10.9-20.7%), β-bisabolol(14.9-20.2%), epi-β-bisabolol(11.7-18.9%), (2E,6E)farnesol(10.0%), β-bisabolene(10.0%). 1,8-cineole(23.4%), sabinene(15.9-21.5%), β-caryophyllene(10.9-19.3%), (Z)β-ocimene(11.2-13.8%) were the major constituents(>10%) having marked the essential oils ofL.camara. The physical characteristicsdeterminedhave varied, at the same time, according to the plant species andwithin the