Documents disponibles écrits par cet auteur

Chemical composition, antibacterial and fungicidal activities of leaf oil of plectranthus amboinicus (Lour.) spreng / José G. M. da Costa in The journal of essential oil research, Vol. 22 N° 2 (Mars/Avril 2010) 

Public ISBD [article]  in The journal of essential oil research > Vol. 22 N° 2 (Mars/Avril 2010) . - pp. 183 - 185 Titre : Chemical composition, antibacterial and fungicidal activities of leaf oil of plectranthus amboinicus (Lour.) spreng Type de document : texte imprimé Auteurs : José G. M. da Costa, Auteur ; Carla K. B. Pereira, Auteur ; Fabiola F. G. Rodrigues, Auteur Année de publication : 2010 Article en page(s) : pp. 183 - 185 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Plectranthus  amboinicus  Lamiaceae  Essential  oil  composition  Thymol  p-cymene  γ-terpinene  Antimicrobial  activity Index. décimale : 646 Résumé : Essential oil was isolated from the leaves of Plectranthus amboinicus by hydrodistillation and analyzed using both gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS). Ten components were characterized representing 94.0% of the total components detected. The major constituents were: thymol (64.3%), p-cymene (10.3%), γ-terpinene (9.9%) and β-caryophyllene (2.8%). The leaf oil demonstrated antibacterial activity against Staphylococcus aureus, Proteus vulgaris and Aeromonas caviae as well as moderate fungicidal activity against Aspergillus niger. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.jeoronline.com/archive/detail/50 [article] Chemical composition, antibacterial and fungicidal activities of leaf oil of plectranthus amboinicus (Lour.) spreng [texte imprimé] / José G. M. da Costa, Auteur ; Carla K. B. Pereira, Auteur ; Fabiola F. G. Rodrigues, Auteur . - 2010 . - pp. 183 - 185. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 22 N° 2 (Mars/Avril 2010) . - pp. 183 - 185 Mots-clés : Plectranthus  amboinicus  Lamiaceae  Essential  oil  composition  Thymol  p-cymene  γ-terpinene  Antimicrobial  activity Index. décimale : 646 Résumé : Essential oil was isolated from the leaves of Plectranthus amboinicus by hydrodistillation and analyzed using both gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS). Ten components were characterized representing 94.0% of the total components detected. The major constituents were: thymol (64.3%), p-cymene (10.3%), γ-terpinene (9.9%) and β-caryophyllene (2.8%). The leaf oil demonstrated antibacterial activity against Staphylococcus aureus, Proteus vulgaris and Aeromonas caviae as well as moderate fungicidal activity against Aspergillus niger. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.jeoronline.com/archive/detail/50

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

Synergism of gentamicin and norfloxacin with the volatile compounds of lippia microphylla Cham. (verbenaceae) / Henrique D.M. Coutinho in The journal of essential oil research, Vol. 23 N° 2 (Mars/Avril 2011) 

Public ISBD [article]  in The journal of essential oil research > Vol. 23 N° 2 (Mars/Avril 2011) . - pp. 24-28 Titre : Synergism of gentamicin and norfloxacin with the volatile compounds of lippia microphylla Cham. (verbenaceae) Type de document : texte imprimé Auteurs : Henrique D.M. Coutinho, Auteur ; Fabiola F. G. Rodrigues, Auteur ; Eidla M. M. Nascimento, Auteur Année de publication : 2011 Article en page(s) : pp. 24-28 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Lippia  microphylla  Gaseous  contact  Minimal  inhibitory  dose  Staphylococcus  aureus  Pseudomonas  aeruginosa Index. décimale : 646 Résumé : This is the first report of antibiotic modifying activity by the volatile compounds from essential oils of Lippia microphylla Cham. (Verbenaceae). The leaves of Lippia microphylla Cham. (Verbenaceae) were extracted by hydrodistillation, and the essential oil obtained was examined with respect to its effects on the antibiotic activity of gentamicin, tetracycline and norfloxacin by minimal inhibitory dose method and gaseous contact. The gaseous component of the oil inhibited the bacterial growth of the strains of Staphylococcus aureus with a MID of 0.5 mg/L air. The activity of gentamicin against Pseudomonas aerugionosa and norfloxacin against Staphylococcus aureus 1199B was increased by 47% and 225%, whereas no effect or an increased resistance to tetracycline was observed with an inhibition zone 14.3% smaller after contact with the gaseous component of the essential oil. These results show that the volatile compounds of this oil can enhance antibiotic activity, which may lead to the development of an adjuvant in the antibiotic therapy of multidrug resistant pathogens (MDR) such as the respiratory tract bacterial pathogens. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700443 [article] Synergism of gentamicin and norfloxacin with the volatile compounds of lippia microphylla Cham. (verbenaceae) [texte imprimé] / Henrique D.M. Coutinho, Auteur ; Fabiola F. G. Rodrigues, Auteur ; Eidla M. M. Nascimento, Auteur . - 2011 . - pp. 24-28. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 23 N° 2 (Mars/Avril 2011) . - pp. 24-28 Mots-clés : Lippia  microphylla  Gaseous  contact  Minimal  inhibitory  dose  Staphylococcus  aureus  Pseudomonas  aeruginosa Index. décimale : 646 Résumé : This is the first report of antibiotic modifying activity by the volatile compounds from essential oils of Lippia microphylla Cham. (Verbenaceae). The leaves of Lippia microphylla Cham. (Verbenaceae) were extracted by hydrodistillation, and the essential oil obtained was examined with respect to its effects on the antibiotic activity of gentamicin, tetracycline and norfloxacin by minimal inhibitory dose method and gaseous contact. The gaseous component of the oil inhibited the bacterial growth of the strains of Staphylococcus aureus with a MID of 0.5 mg/L air. The activity of gentamicin against Pseudomonas aerugionosa and norfloxacin against Staphylococcus aureus 1199B was increased by 47% and 225%, whereas no effect or an increased resistance to tetracycline was observed with an inhibition zone 14.3% smaller after contact with the gaseous component of the essential oil. These results show that the volatile compounds of this oil can enhance antibiotic activity, which may lead to the development of an adjuvant in the antibiotic therapy of multidrug resistant pathogens (MDR) such as the respiratory tract bacterial pathogens. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2011.9700443