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Chemical composition of essential oils of two species of the Lamiaceae family / Eduardo Valarezo in The journal of essential oil research, Vol. 24 N° 1 (Fevrier 2012) 

Public ISBD [article]  in The journal of essential oil research > Vol. 24 N° 1 (Fevrier 2012) . - pp. 31-37 Titre : Chemical composition of essential oils of two species of the Lamiaceae family : Scutellaria volubilis and Lepechinia paniculata from Loja, Ecuador Type de document : texte imprimé Auteurs : Eduardo Valarezo, Auteur ; Andrea Castillo, Auteur ; Diana Guaya, Auteur Année de publication : 2012 Article en page(s) : pp. 31-37 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Scutellaria  volubilis  Lepechinia  paniculata  Lamiaceae  Germacrene  D  Aromadendrene Résumé : Scutellaria volubilis and Lepechinia paniculata belong to the Lamiaceae family of species. They are used widely in traditional medicine in Ecuador. The physical properties and chemical composition of the essential oils from the aerial part of Scutellaria volubilis in its foliation – flowering stage and Lepechinia paniculata in its flowering phase have been studied after their hydrodistillation. The components of these essential oils were investigated by means of gas chromatography/mass spectrometry (GC/MS) and gas chromatography/flame ionization detection (GC/FID) techniques. Thirty-seven components were determined in the essential oil of S. volubilis. The principal constituents were found to be sesquiterpene hydrocarbons: germacrene D (20.4%), β-caryophyllene (17.5%), α-humulene (14.7%) and β-bisabolene (5.8%). Thirty-four components were identified in the essential oil of L. paniculata, the principal groups were sesquiterpene hydrocarbons such as aromadendrene (24.6%), viridiflorene (12.4%), β-selinene (7.4%) and valencene (6.7%). The monoterpene hydrocarbons were present in lower amounts as well as β-phellandrene (6.9%) and (7.7%). Oxygenated monoterpenes and sesquiterpenes contribute below 5% in both species. This is the first report on the chemical composition of this species. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.645638 [article] Chemical composition of essential oils of two species of the Lamiaceae family : Scutellaria volubilis and Lepechinia paniculata from Loja, Ecuador [texte imprimé] / Eduardo Valarezo, Auteur ; Andrea Castillo, Auteur ; Diana Guaya, Auteur . - 2012 . - pp. 31-37. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 24 N° 1 (Fevrier 2012) . - pp. 31-37 Mots-clés : Scutellaria  volubilis  Lepechinia  paniculata  Lamiaceae  Germacrene  D  Aromadendrene Résumé : Scutellaria volubilis and Lepechinia paniculata belong to the Lamiaceae family of species. They are used widely in traditional medicine in Ecuador. The physical properties and chemical composition of the essential oils from the aerial part of Scutellaria volubilis in its foliation – flowering stage and Lepechinia paniculata in its flowering phase have been studied after their hydrodistillation. The components of these essential oils were investigated by means of gas chromatography/mass spectrometry (GC/MS) and gas chromatography/flame ionization detection (GC/FID) techniques. Thirty-seven components were determined in the essential oil of S. volubilis. The principal constituents were found to be sesquiterpene hydrocarbons: germacrene D (20.4%), β-caryophyllene (17.5%), α-humulene (14.7%) and β-bisabolene (5.8%). Thirty-four components were identified in the essential oil of L. paniculata, the principal groups were sesquiterpene hydrocarbons such as aromadendrene (24.6%), viridiflorene (12.4%), β-selinene (7.4%) and valencene (6.7%). The monoterpene hydrocarbons were present in lower amounts as well as β-phellandrene (6.9%) and (7.7%). Oxygenated monoterpenes and sesquiterpenes contribute below 5% in both species. This is the first report on the chemical composition of this species. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.645638