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Chemical composition, seasonal variation and evaluation of antimicrobial activity of essential oils of talauma ovata A. St. Hil. (Magnoliaceae) / Maria Elida A. Stefanello in The journal of essential oil research, Vol. 20 n°6 (Novembre/Décembre 2008) 

Public ISBD [article]  in The journal of essential oil research > Vol. 20 n°6 (Novembre/Décembre 2008) . - pp. 565-569 Titre : Chemical composition, seasonal variation and evaluation of antimicrobial activity of essential oils of talauma ovata A. St. Hil. (Magnoliaceae) Type de document : texte imprimé Auteurs : Maria Elida A. Stefanello, Auteur ; Marcos J. Salvador, Auteur ; Izabel Y. Ito, Auteur Année de publication : 2009 Article en page(s) : pp. 565-569 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Talauma  ovata  Magnoliaceae  Essential  oil  composition  Linalool  Trans-β-guaiene  Germacrene  D  Germacrene  B  Spathulenol  Caryophyllene  oxide  Viridiflorol  α-eudesmol  Antimicrobial  activity Résumé : The essential oils isolated by hydrodistillation from trunk bark and leaves of Talauma ovata A. St. Hil. (Magnoliaceae), collected in four seasons, were analyzed by capillary GC and GC/MS. Altogether 52 components were identified. The oils were characterized by predominance of cyclic sesquiterpenes. The main components were linalool, trans-β-guaiene, germacrene D, germacrene B, spathulenol, caryophyllene oxide, viridiflorol and α-eudesmol. The content of individual components was variable during the year. All oils were screened against several strains of bacteria and yeasts, using the agar well-diffusion technique. The antimicrobial activity of oils showed strong dependence with the season. Significant activity was found for oils obtained in the spring and summer. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2008.9700089 [article] Chemical composition, seasonal variation and evaluation of antimicrobial activity of essential oils of talauma ovata A. St. Hil. (Magnoliaceae) [texte imprimé] / Maria Elida A. Stefanello, Auteur ; Marcos J. Salvador, Auteur ; Izabel Y. Ito, Auteur . - 2009 . - pp. 565-569. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 20 n°6 (Novembre/Décembre 2008) . - pp. 565-569 Mots-clés : Talauma  ovata  Magnoliaceae  Essential  oil  composition  Linalool  Trans-β-guaiene  Germacrene  D  Germacrene  B  Spathulenol  Caryophyllene  oxide  Viridiflorol  α-eudesmol  Antimicrobial  activity Résumé : The essential oils isolated by hydrodistillation from trunk bark and leaves of Talauma ovata A. St. Hil. (Magnoliaceae), collected in four seasons, were analyzed by capillary GC and GC/MS. Altogether 52 components were identified. The oils were characterized by predominance of cyclic sesquiterpenes. The main components were linalool, trans-β-guaiene, germacrene D, germacrene B, spathulenol, caryophyllene oxide, viridiflorol and α-eudesmol. The content of individual components was variable during the year. All oils were screened against several strains of bacteria and yeasts, using the agar well-diffusion technique. The antimicrobial activity of oils showed strong dependence with the season. Significant activity was found for oils obtained in the spring and summer. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2008.9700089