International Science Community Association International Research Journal of Biological Sciences 2278 - 3202 1 3 2012 07 10 Chemical composition and Biological activities of the Essential oil extracted from the Fresh leaves of Chromolaena odorata (L. Robinson) growing in Benin 7 13 EN Patel AnuradhaJitendra 1 Department of Zoology, Bhavans College, Andheri, Mumbai University, Mumbai, INDIA Thakor AkankshaPravin 2 Department of Biotechnology, N.B. Mehta Science College, Bordi, Mumbai University, Mumbai, INDIA Avlessi Félicien 1 Lab. d’Etude et de Recherche en Chimie Appliquée, Ecole Polytechnique d’Abomey-Calavi, Université d’Abomey-Calavi, Cotonou BENIN AlitonouGuy Alain 2 Institut des Biomolécules Max Mousseron, IBMM UMR, CNRS-UM1-UM2, ENSCM, rue de l’Ecole Normale, Montpellier cedex, FRANCE DjenontinT. Sébastien 3 Tchobo Fidele 4 Yèhouénou Boniface 5 MenutChantal 6 Sohounhloué Dominique 7 > Research Paper 2012 5 10 2012 07 10 The chemical composition of the essential oil of Chromolaena odorata(L. Robinson) (Asteraceae) of leaves collected in Benin was analyzed by GC and GC/MS. Twenty three compounds were identified and quantified in the essential oil, which represented 99.4 % of the total constituents. The main constituents found in the oil were -pinene (20.7%), pregeijerene (14.6%), geijerene (12.0%), -pinene (10.3%), germacrene-D (9.7%). The antibacterial activitiy of this oil was found to be relevant while the antifungal and antiradical activities were low. Copyright@ International Science Community Association