Composition chimique et activités biologiques de l'huile essentielle de Lantana camara Linn.

Abstract

La composition chimique de l'huile essentielle extraite des feuilles fraîches de Lantana camara Linn. récoltées sur le campus d'Abomey-Calavi (Bénin) a été étudiée par chromatographie en phase gazeuse couplée avec la spectrométrie de masse (CG et CG/SM). Quarante et un constituants, représentant 94,76 % de l'huile essentielle de Lantana camara, ont été identifiés. Les composés majoritaires sont : b-caryophyllène 18,5 % ; sabinène 13,1 % ; a-humulène 10 % ; 1,8-cinéole 9 % ; d-guaiene 5,0 %. Cette huile, testée sur des microorganismes (bactéries et champignons) et les tiques (Amblyoma variegatum), s'est révélée très efficace.

Bioactivity of essential oil from fresh leaves of Lantana camara against fungi isolated from stored cowpea in southern Benin

“…Essential oil was obtained by hydrodistillation with a yield of 0.6% and was yellow in color. This yield is higher than that obtained by Alitonou et al, (2004) and Sonibare and Effiong (2008). This difference could be related to the zone of collection, the nature of the ground, the stage of development of the plant (Adjou and Soumanou, 2013) and the method used for essential oil extraction (Ogunsina et al, 2010).…”

Chemical constituents and evaluation of cytotoxic and antifungal activity of Lantana camara essential oils

“…It should be noted that many sesquiterpenes identified in the essential oil extracted from leaves also occurred in the oil extracted from stems, independently of collection time. With concentration above 10%, the predominant compounds in the analysis described in the literature were: germacrene D, limonene, δ-curcumene, curcumene, davanone and 1,8-cineole (Ngassoum et al, 1999;Silva et al, 1999;Misra & Laatsch, 2000;Alitonou et al, 2004;Hernández et al, 2005;Sonibare & Effiong, 2008). …”

“…In relation to chemical volatile constituents from genus Lantana, previously published studies showed a predominance of mono and sesquiterpenes Ngassoum et al, 1999;Silva et al, 1999;Misra & Laatsch, 2000;Alitonou et al, 2004;Hernández et al, 2005;Sonibare & Effiong, 2008). In this sense, we recently analyzed leaves of Lantana species by GC-MS collected in Ceará, Brazil, and it showed that essential oils from these species have in its composition mainly sesquiterpenes and sesquiterpenoids Sousa et al, 2009).…”

“…Notably, for this oil the evaluation of toxicity LC50 revealed results with minor values to limit pattern of 1000 μg/ mL for Artemia salina. Moreover, the essential oil of L. achyranthifolia and L. camara showed antibacterial and antifungal activity against microorganisms that are actively working in respiratory and intestinal infections (Alitonou et al, 2004;Hernández et al, 2005;Sonibare & Effiong, 2008). Several species are considered toxic, but the most important toxic species is L. camara, to cause photosensitization in ruminants when they ingest large quantities of leaves (Bastianetto et al, 2005).…”

Evaluation of Unsaponified Petroleum Ether Extract of Lantana camara L. leaves for Antioxidant Activity and Oxidative Stability

“…Percent Inhibition was calculated using a formula: % Inhibition =100 -[(Abs sample −Abs blank ) × 100/ Abs control ] Where Abs sample is the absorbance obtained in the presence of USPE extract concentrations and Abs control is that obtained in the absence of extracts. The concentration necessary to inhibit 50% radical formation, inhibitory capacity IC 50 were obtained by extrapolating the graph obtained by plotting the % inhibition versus different concentrations of USPE extracts, determined in triplicate.…”