Documents disponibles écrits par cet auteur

Chemical composition of the essential oils of Lantana camara L. and Lantana montevidensis Briq. and their synergistic antibiotic effects on aminoglycosides / Erlânio O. Sousa in The journal of essential oil research, Vol. 24 N° 5 (Octobre 2012) 

Public ISBD [article]  in The journal of essential oil research > Vol. 24 N° 5 (Octobre 2012) . - pp. 447-452 Titre : Chemical composition of the essential oils of Lantana camara L. and Lantana montevidensis Briq. and their synergistic antibiotic effects on aminoglycosides Type de document : texte imprimé Auteurs : Erlânio O. Sousa, Auteur ; Francisco S. S. Barreto, Auteur ; Fabiola F. G. Rodrigues, Auteur Année de publication : 2013 Article en page(s) : pp. 447-452 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Essential  oil  composition  Lantana  Antibacterial  activity  Aminoglycosides  Synergism Résumé : Recently, several plants have been evaluated not only for antimicrobial activity but also for resistance-modifying action. In this work, the chemical composition and antibacterial and antibiotic-modulatory activities of the essential oils from Lantana camara L. and Lantana montevidensis Briq. were analyzed. The essential oils extracted from the leaves by hydrodistillation and analyzed by gas chromatography (GC) and gas chromatography–mass spectrometry (GC–MS) were characterized by a high percentage of sesquiterpene hydrocarbons. Among the 34 constituents identified, bicyclogermacrene (19.4%), isocaryophyllene (16.7%), valencene (12.9%) and germacrene D (12.3%) were the main constituents of the oil from L. camara, while in the oil from L. montevidensis, β-caryophyllene (31.5%), germacrene D (27.5%) and bicyclogermacrene (13.9%) predominated. The essential oils were examined for antibiotic activities alone and in combination with aminoglycosides by a microdilution assay utilizing five bacterial strains. They exhibited significant antibacterial activities, mainly against Proteus vulgaris (MIC 64 μg/mL, L. camara; MIC 128 μg/mL, L. montevidensis). Both oils also showed a synergistic effect on the activity of aminoglycoside antibiotics. Thus, the essential oils of L. camara and L. montevidensis could be used as a source of plant-derived natural products with resistance-modifying antibacterial activity. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.703494 [article] Chemical composition of the essential oils of Lantana camara L. and Lantana montevidensis Briq. and their synergistic antibiotic effects on aminoglycosides [texte imprimé] / Erlânio O. Sousa, Auteur ; Francisco S. S. Barreto, Auteur ; Fabiola F. G. Rodrigues, Auteur . - 2013 . - pp. 447-452. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 24 N° 5 (Octobre 2012) . - pp. 447-452 Mots-clés : Essential  oil  composition  Lantana  Antibacterial  activity  Aminoglycosides  Synergism Résumé : Recently, several plants have been evaluated not only for antimicrobial activity but also for resistance-modifying action. In this work, the chemical composition and antibacterial and antibiotic-modulatory activities of the essential oils from Lantana camara L. and Lantana montevidensis Briq. were analyzed. The essential oils extracted from the leaves by hydrodistillation and analyzed by gas chromatography (GC) and gas chromatography–mass spectrometry (GC–MS) were characterized by a high percentage of sesquiterpene hydrocarbons. Among the 34 constituents identified, bicyclogermacrene (19.4%), isocaryophyllene (16.7%), valencene (12.9%) and germacrene D (12.3%) were the main constituents of the oil from L. camara, while in the oil from L. montevidensis, β-caryophyllene (31.5%), germacrene D (27.5%) and bicyclogermacrene (13.9%) predominated. The essential oils were examined for antibiotic activities alone and in combination with aminoglycosides by a microdilution assay utilizing five bacterial strains. They exhibited significant antibacterial activities, mainly against Proteus vulgaris (MIC 64 μg/mL, L. camara; MIC 128 μg/mL, L. montevidensis). Both oils also showed a synergistic effect on the activity of aminoglycoside antibiotics. Thus, the essential oils of L. camara and L. montevidensis could be used as a source of plant-derived natural products with resistance-modifying antibacterial activity. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.703494