Documents disponibles écrits par cet auteur

Volatile constituents and antibacterial activity of leaf oil of thottea ponmudiana sivar. / John J. Anil in The journal of essential oil research, Vol. 20 N°5 (Septembre/Octobre 2008) 

Public ISBD [article]  in The journal of essential oil research > Vol. 20 N°5 (Septembre/Octobre 2008) . - pp. 460-463 Titre : Volatile constituents and antibacterial activity of leaf oil of thottea ponmudiana sivar. Type de document : texte imprimé Auteurs : John J. Anil, Auteur ; Jose J. Oswin, Auteur ; George Varughese, Auteur Année de publication : 2008 Article en page(s) : pp. 460-463 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Thottea  ponmudiana  Aristolochiaceae  Essential  oil  Chemical  composition  Antibacterial  activity  Pregeijerene  B  8α-acetoxyelemol  Terpinolene Résumé : The essential oil obtained by hydrodistillation of the fresh leaves of Thottea ponmudiana was analyzed by gas chromatography and gas chromatography-mass spectrometry. Twenty-seven components comprising 87.4% of the leaf oil were identified. Among the identified constituents 14.8% were monoterpene hydrocarbons, 32.6% were sesquiterpene hydrocarbons and 40.0% oxygenated sesquiterpenes. The major component, pregeijerene B (E,E,E-1,7-dimethylcylododeca-1,4,7-triene) (25.8%) was isolated and identified by IR, GC/EIMS and 1H-NMR analyses. The other major components in the leaf oil were 8α-acetoxyelemol (21.6%) followed by terpinolene (10.1%), elemol (8.2%) and bulnesol (4.9%). The antibacterial activity of the oil was tested against both Gram-positive and Gram-negative bacteria. The oil showed significant activity against the Gram-positive bacteria Staphylococcus aureus and Bacillus subtilis, in comparison with the standard, streptomycin. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2008.9700059 [article] Volatile constituents and antibacterial activity of leaf oil of thottea ponmudiana sivar. [texte imprimé] / John J. Anil, Auteur ; Jose J. Oswin, Auteur ; George Varughese, Auteur . - 2008 . - pp. 460-463. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 20 N°5 (Septembre/Octobre 2008) . - pp. 460-463 Mots-clés : Thottea  ponmudiana  Aristolochiaceae  Essential  oil  Chemical  composition  Antibacterial  activity  Pregeijerene  B  8α-acetoxyelemol  Terpinolene Résumé : The essential oil obtained by hydrodistillation of the fresh leaves of Thottea ponmudiana was analyzed by gas chromatography and gas chromatography-mass spectrometry. Twenty-seven components comprising 87.4% of the leaf oil were identified. Among the identified constituents 14.8% were monoterpene hydrocarbons, 32.6% were sesquiterpene hydrocarbons and 40.0% oxygenated sesquiterpenes. The major component, pregeijerene B (E,E,E-1,7-dimethylcylododeca-1,4,7-triene) (25.8%) was isolated and identified by IR, GC/EIMS and 1H-NMR analyses. The other major components in the leaf oil were 8α-acetoxyelemol (21.6%) followed by terpinolene (10.1%), elemol (8.2%) and bulnesol (4.9%). The antibacterial activity of the oil was tested against both Gram-positive and Gram-negative bacteria. The oil showed significant activity against the Gram-positive bacteria Staphylococcus aureus and Bacillus subtilis, in comparison with the standard, streptomycin. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2008.9700059