Documents disponibles écrits par cet auteur

Chemical composition and antibacterial activities of essential oils from Zingiber spectabile Griff / Y. Sivasothy in The journal of essential oil research, Vol. 24 N° 3 (Juin 2012) 

Public ISBD [article]  in The journal of essential oil research > Vol. 24 N° 3 (Juin 2012) . - pp. 305-313 Titre : Chemical composition and antibacterial activities of essential oils from Zingiber spectabile Griff Type de document : texte imprimé Auteurs : Y. Sivasothy, Auteur ; K. Awang, Auteur ; H. Ibrahim, Auteur Année de publication : 2012 Article en page(s) : pp. 305-313 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Zingiber  spectabile  Griff  Zingiberaceae  Essential  oil  composition  Antibacterial  activity  Zerumbone  β-caryophyllene  β-elemene Résumé : The essential oils of the leaves and rhizomes of Zingiber spectabile Griff. were analyzed by capillary gas chromatography (GC) and GC–mass spectrometry (GC–MS) following the isolation by hydrodistillation. In total, 80 compounds were identified in its leaf and rhizome oils. Both oils were sesquiterpenic in nature but with distinctly different odors. The most abundant components in the leaf oil were β-caryophyllene (21.3%) and β-elemene (12.5%), whereas the rhizomes yielded an oil rich in zerumbone (59.1%). The antibacterial activities of both oils against multidrug-resistant strains and food-borne pathogens were evaluated by the disc diffusion assay and by determining their minimum inhibitory concentration (MIC) values. The leaf oil was inactive against all tested microorganisms, whereas the rhizome oil exhibited weak activity against Escherichia coli, Salmonella enteritidis, Salmonella typhi, Salmonella typhimurium, Shigella flexneri, Klebsiella pneumoniae, Pseudomonas aeruginosa and methicillin-resistant Staphylococcus aureus (MRSA). ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.676803 [article] Chemical composition and antibacterial activities of essential oils from Zingiber spectabile Griff [texte imprimé] / Y. Sivasothy, Auteur ; K. Awang, Auteur ; H. Ibrahim, Auteur . - 2012 . - pp. 305-313. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 24 N° 3 (Juin 2012) . - pp. 305-313 Mots-clés : Zingiber  spectabile  Griff  Zingiberaceae  Essential  oil  composition  Antibacterial  activity  Zerumbone  β-caryophyllene  β-elemene Résumé : The essential oils of the leaves and rhizomes of Zingiber spectabile Griff. were analyzed by capillary gas chromatography (GC) and GC–mass spectrometry (GC–MS) following the isolation by hydrodistillation. In total, 80 compounds were identified in its leaf and rhizome oils. Both oils were sesquiterpenic in nature but with distinctly different odors. The most abundant components in the leaf oil were β-caryophyllene (21.3%) and β-elemene (12.5%), whereas the rhizomes yielded an oil rich in zerumbone (59.1%). The antibacterial activities of both oils against multidrug-resistant strains and food-borne pathogens were evaluated by the disc diffusion assay and by determining their minimum inhibitory concentration (MIC) values. The leaf oil was inactive against all tested microorganisms, whereas the rhizome oil exhibited weak activity against Escherichia coli, Salmonella enteritidis, Salmonella typhi, Salmonella typhimurium, Shigella flexneri, Klebsiella pneumoniae, Pseudomonas aeruginosa and methicillin-resistant Staphylococcus aureus (MRSA). ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.676803

Essential oils of elettariopsis curtisii (Zingiberaceae) and their antimicrobial activities / H. Ibrahim in The journal of essential oil research, Vol. 21 N° 5 (Septembre/Octobre 2009) 

Public ISBD [article]  in The journal of essential oil research > Vol. 21 N° 5 (Septembre/Octobre 2009) . - pp. 464- 466 Titre : Essential oils of elettariopsis curtisii (Zingiberaceae) and their antimicrobial activities Type de document : texte imprimé Auteurs : H. Ibrahim, Auteur ; D.R. Syamsir, Auteur ; A. N. Aziz, Auteur Article en page(s) : pp. 464- 466 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Elettariopsis  curtisii  Zingiberaceae  Essential  oil  composition  (E)-2-octenal  (E)-2-decenal  (E)-2-decenoic  acid  Antimicrobial  activity Index. décimale : 646 Résumé : The essential oils of leaves and rhizomes (fresh and dried) of Elettariopsis curtisii collected from Jeli, Kelantan were isolated by hydrodistillation and were analyzed using capillary GC and GC/MS. The most abundant components in both leaf and rhizome oils were (E)-2-octenal (1.0–19.3%), (E)-2-decenal (17.4–69.4%) and (E)-2-decenoic acid (7.4–57.2%). None of the oils exhibited remarkable inhibition potential against the microbes Microsporum canis, Trichophyton mentagrophytes, Trichophyton rubrum, Pseudomonas aeruginosa, Pseudomonas cepacia, Staphylococcus aureus and Staphylococcus epidermidis except for the fresh rhizome oil which showed an MIC value of 0.938 mg/ mL against T. mentagrophytes. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.jeoronline.com/archive/detail/42#top [article] Essential oils of elettariopsis curtisii (Zingiberaceae) and their antimicrobial activities [texte imprimé] / H. Ibrahim, Auteur ; D.R. Syamsir, Auteur ; A. N. Aziz, Auteur . - pp. 464- 466. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 21 N° 5 (Septembre/Octobre 2009) . - pp. 464- 466 Mots-clés : Elettariopsis  curtisii  Zingiberaceae  Essential  oil  composition  (E)-2-octenal  (E)-2-decenal  (E)-2-decenoic  acid  Antimicrobial  activity Index. décimale : 646 Résumé : The essential oils of leaves and rhizomes (fresh and dried) of Elettariopsis curtisii collected from Jeli, Kelantan were isolated by hydrodistillation and were analyzed using capillary GC and GC/MS. The most abundant components in both leaf and rhizome oils were (E)-2-octenal (1.0–19.3%), (E)-2-decenal (17.4–69.4%) and (E)-2-decenoic acid (7.4–57.2%). None of the oils exhibited remarkable inhibition potential against the microbes Microsporum canis, Trichophyton mentagrophytes, Trichophyton rubrum, Pseudomonas aeruginosa, Pseudomonas cepacia, Staphylococcus aureus and Staphylococcus epidermidis except for the fresh rhizome oil which showed an MIC value of 0.938 mg/ mL against T. mentagrophytes. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.jeoronline.com/archive/detail/42#top