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Chemical analyses of the essential oils from leaves of mikania glauca mart. ex baker / Luiz Gustavo de L. Guimarães in The journal of essential oil research, Vol. 24 N° 6 (Décembre 2012) 

Public ISBD [article]  in The journal of essential oil research > Vol. 24 N° 6 (Décembre 2012) . - pp. 599-604 Titre : Chemical analyses of the essential oils from leaves of mikania glauca mart. ex baker Type de document : texte imprimé Auteurs : Luiz Gustavo de L. Guimarães, Auteur ; Maria das G. Cardoso, Auteur ; Lucilene F. Silva, Auteur Année de publication : 2014 Article en page(s) : pp. 599-604 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Mikania  glauca  Asteraceae  β-pinene  α-pinene  Myrcene Résumé : The essential oils obtained by hydrodistillation of two samples of fresh Mikania glauca leaves collected in different periods were analyzed by gas chromatography (GC) and by GC–mass spectrometry (GC–MS). Twenty compounds, representing 99% of the total oil composition, were identified and quantified in sample 1, while forty-five compounds, also representing 99% of the total oil composition, were identified in sample 2. The essential oils from the fresh leaves of both samples were rich in the terpenes. In sample 1 and 2, respectively, α-pinene (27% and 26%), β-pinene (22% and 36%), myrcene (24% and 18%), β-caryophyllene (9% and 6%) and bicyclogermacrene (8% and 4%) were the principal constituents. This demonstrated the predominance of monoterpene hydrocarbons in the essential oil of M. glauca and the influence of the collection period on the concentrations of the components. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.742789 [article] Chemical analyses of the essential oils from leaves of mikania glauca mart. ex baker [texte imprimé] / Luiz Gustavo de L. Guimarães, Auteur ; Maria das G. Cardoso, Auteur ; Lucilene F. Silva, Auteur . - 2014 . - pp. 599-604. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 24 N° 6 (Décembre 2012) . - pp. 599-604 Mots-clés : Mikania  glauca  Asteraceae  β-pinene  α-pinene  Myrcene Résumé : The essential oils obtained by hydrodistillation of two samples of fresh Mikania glauca leaves collected in different periods were analyzed by gas chromatography (GC) and by GC–mass spectrometry (GC–MS). Twenty compounds, representing 99% of the total oil composition, were identified and quantified in sample 1, while forty-five compounds, also representing 99% of the total oil composition, were identified in sample 2. The essential oils from the fresh leaves of both samples were rich in the terpenes. In sample 1 and 2, respectively, α-pinene (27% and 26%), β-pinene (22% and 36%), myrcene (24% and 18%), β-caryophyllene (9% and 6%) and bicyclogermacrene (8% and 4%) were the principal constituents. This demonstrated the predominance of monoterpene hydrocarbons in the essential oil of M. glauca and the influence of the collection period on the concentrations of the components. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.742789