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Détail de l'auteur
Auteur João Henrique G. Lago
Documents disponibles écrits par cet auteur
Affiner la rechercheAnalysis of the essential oil from leaves of three different specimens of guarea guidonia (L.) sleumer (Meliaceae) / João Henrique G. Lago in The journal of essential oil research, Vol. 17 N° 3 (Mai-Juin 2005)
in The journal of essential oil research > Vol. 17 N° 3 (Mai-Juin 2005) . - pp. 271-273
Titre : Analysis of the essential oil from leaves of three different specimens of guarea guidonia (L.) sleumer (Meliaceae) Type de document : texte imprimé Auteurs : João Henrique G. Lago, Auteur ; Cláudia B. Brochini, Auteur ; Nídia F. Roque, Auteur Année de publication : 2006 Article en page(s) : pp. 271-273 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Guarea guidonia Meliaceae Essential oil composition Chemical variation Eudesma-5,7-diene β-caryophyllene Eudesm-6-en-4β-ol Eudesma-5,7-dien-2a-ol Guai-6-en-10β-ol Résumé : The essential oils from leaves of three different specimens of Guarea guidonia were obtained by hydrodistillation. These crude oils were subjected to FID-GC and GC/MS analysis as well as to adsorption chromatographic separations. Several sesquiterpenes were identified including hydrocarbon and oxygenated derivatives. The data indicated a significant difference in the chemical composition of the oils obtained from the leaves of different specimens. Furthermore, this analysis corroborated the hypothesis that Guarea species do not produce monoterpenes. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9698899#.UeKSVmF2_n4 [article] Analysis of the essential oil from leaves of three different specimens of guarea guidonia (L.) sleumer (Meliaceae) [texte imprimé] / João Henrique G. Lago, Auteur ; Cláudia B. Brochini, Auteur ; Nídia F. Roque, Auteur . - 2006 . - pp. 271-273.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 17 N° 3 (Mai-Juin 2005) . - pp. 271-273
Mots-clés : Guarea guidonia Meliaceae Essential oil composition Chemical variation Eudesma-5,7-diene β-caryophyllene Eudesm-6-en-4β-ol Eudesma-5,7-dien-2a-ol Guai-6-en-10β-ol Résumé : The essential oils from leaves of three different specimens of Guarea guidonia were obtained by hydrodistillation. These crude oils were subjected to FID-GC and GC/MS analysis as well as to adsorption chromatographic separations. Several sesquiterpenes were identified including hydrocarbon and oxygenated derivatives. The data indicated a significant difference in the chemical composition of the oils obtained from the leaves of different specimens. Furthermore, this analysis corroborated the hypothesis that Guarea species do not produce monoterpenes. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9698899#.UeKSVmF2_n4
in The journal of essential oil research > Vol. 17 N° 6 (Novembre-Décembre 2005) . - pp. 622-623
Titre : Composition of the Leaf Oil of Xylopia emarginata Mart. (Annonaceae) Type de document : texte imprimé Auteurs : João Henrique G. Lago, Auteur ; Anair A. Reis, Auteur ; Dirceu Martins, Auteur Année de publication : 2006 Article en page(s) : pp. 622-623 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Annonaceae Leaf oil Résumé : The leaves of Xylopia emarginata were submitted to steam distillation. The obtained essential oil was subjected to analysis by GC and GC/MS associated to 1H- and 13C-NMR spectral analysis, after chromatographic separation. The major identified components were spathulenol (34.4%) and caryophyllene oxide (25.0%). ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9699013#.UbluQ9h-Tp8 [article] Composition of the Leaf Oil of Xylopia emarginata Mart. (Annonaceae) [texte imprimé] / João Henrique G. Lago, Auteur ; Anair A. Reis, Auteur ; Dirceu Martins, Auteur . - 2006 . - pp. 622-623.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 17 N° 6 (Novembre-Décembre 2005) . - pp. 622-623
Mots-clés : Annonaceae Leaf oil Résumé : The leaves of Xylopia emarginata were submitted to steam distillation. The obtained essential oil was subjected to analysis by GC and GC/MS associated to 1H- and 13C-NMR spectral analysis, after chromatographic separation. The major identified components were spathulenol (34.4%) and caryophyllene oxide (25.0%). ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9699013#.UbluQ9h-Tp8
in The journal of essential oil research > Vol. 19 N°4 (Juillet/Août 2007) . - pp. 338-341
Titre : Essential oil from of guarea macrophylla vahl var. tuberculata vellozo (Meliaceae) leaves—variation in the chemical component proportions Type de document : texte imprimé Auteurs : João Henrique G. Lago, Auteur ; Paulete Romoff, Auteur ; José R. Pirani, Auteur Année de publication : 2007 Article en page(s) : pp. 338-341 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Guarea macrophylla var. tuberculata Meliaceae Essential oil composition (Z)-methyl cinnamate Bicycloger-macrene Guai-6-en-10β-ol Ledol γ-cadinene Manoyl oxide Seasonal variation Résumé : The essential oils isolated from leaves of Guarea macrophylla var. tuberculata collected monthly during two years (from November 1997 to October 1999) were subjected to GC-FID and GC/MS analysis. The obtained data showed a significant variation in the proportions of the components, which could be associated to species phenological state despite of climatic parameters in each collection. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2007.9699298#.UWv_x0qC5mN [article] Essential oil from of guarea macrophylla vahl var. tuberculata vellozo (Meliaceae) leaves—variation in the chemical component proportions [texte imprimé] / João Henrique G. Lago, Auteur ; Paulete Romoff, Auteur ; José R. Pirani, Auteur . - 2007 . - pp. 338-341.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 19 N°4 (Juillet/Août 2007) . - pp. 338-341
Mots-clés : Guarea macrophylla var. tuberculata Meliaceae Essential oil composition (Z)-methyl cinnamate Bicycloger-macrene Guai-6-en-10β-ol Ledol γ-cadinene Manoyl oxide Seasonal variation Résumé : The essential oils isolated from leaves of Guarea macrophylla var. tuberculata collected monthly during two years (from November 1997 to October 1999) were subjected to GC-FID and GC/MS analysis. The obtained data showed a significant variation in the proportions of the components, which could be associated to species phenological state despite of climatic parameters in each collection. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2007.9699298#.UWv_x0qC5mN
in The journal of essential oil research > Vol. 17 N° 6 (Novembre-Décembre 2005) . - pp. 626-627
Titre : Variation on the chemical composition of the oil from damaged branches of guarea guidonia (L.) sleumer (Meliaceae) Type de document : texte imprimé Auteurs : Cecília V. Nuñez, Auteur ; João Henrique G. Lago, Auteur ; Nídia F. Roque, Auteur Année de publication : 2006 Article en page(s) : pp. 626-627 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Guarea guidonia Meliaceae Essential oil composition Germacrene D Résumé : The damaged branches of one specimen of Guarea guidonia, which had been blown down after a high wind, were submitted to steam distillation. The oil was analyzed by GC and GC/MS. The chromatographic profile indicated a difference in the composition of this oil in comparison to an oil obtained from healthy-branch oil analyzed previously The crude oil was thus submitted to chromatographic separation, and the main components identified by NMR and GC/MS. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9699015#.UbnGS9h-Tp9 [article] Variation on the chemical composition of the oil from damaged branches of guarea guidonia (L.) sleumer (Meliaceae) [texte imprimé] / Cecília V. Nuñez, Auteur ; João Henrique G. Lago, Auteur ; Nídia F. Roque, Auteur . - 2006 . - pp. 626-627.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 17 N° 6 (Novembre-Décembre 2005) . - pp. 626-627
Mots-clés : Guarea guidonia Meliaceae Essential oil composition Germacrene D Résumé : The damaged branches of one specimen of Guarea guidonia, which had been blown down after a high wind, were submitted to steam distillation. The oil was analyzed by GC and GC/MS. The chromatographic profile indicated a difference in the composition of this oil in comparison to an oil obtained from healthy-branch oil analyzed previously The crude oil was thus submitted to chromatographic separation, and the main components identified by NMR and GC/MS. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9699015#.UbnGS9h-Tp9
in The journal of essential oil research > Vol. 17 N° 3 (Mai-Juin 2005) . - pp. 310-311
Titre : Volatile oil composition of aspidosperma cylindrocarpon muell. arg. leaves Type de document : texte imprimé Auteurs : Melânia Lopes Cornélio, Auteur ; João Henrique G. Lago, Auteur ; Paulo Roberto H. Moreno, Auteur Année de publication : 2006 Article en page(s) : pp. 310-311 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Aspidosperma Apocynaceae Essential oil composition β-caryophyllene Bicyclogermacrene Nonadecanal Résumé : The composition of the volatile oil from Aspidosperma cylindrocarpon Muell. Arg. leaves was investigated by GC, GC/MS and 13C-NMR spectroscopy. The oil was characterized by the presence of a high percentage of sesquiterpene hydrocarbons (45.6%) and aliphatic compounds (35.9%). The major constituents were β-caryophyllene (14.3%), bicyclogermacrene (14.2%) and nonadecanal (22.9%). Oxygenated sesquiterpenes (6.5%) and monoterpenes (6.4%) were also identified. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9698913#.UeO7QWF2_n4 [article] Volatile oil composition of aspidosperma cylindrocarpon muell. arg. leaves [texte imprimé] / Melânia Lopes Cornélio, Auteur ; João Henrique G. Lago, Auteur ; Paulo Roberto H. Moreno, Auteur . - 2006 . - pp. 310-311.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 17 N° 3 (Mai-Juin 2005) . - pp. 310-311
Mots-clés : Aspidosperma Apocynaceae Essential oil composition β-caryophyllene Bicyclogermacrene Nonadecanal Résumé : The composition of the volatile oil from Aspidosperma cylindrocarpon Muell. Arg. leaves was investigated by GC, GC/MS and 13C-NMR spectroscopy. The oil was characterized by the presence of a high percentage of sesquiterpene hydrocarbons (45.6%) and aliphatic compounds (35.9%). The major constituents were β-caryophyllene (14.3%), bicyclogermacrene (14.2%) and nonadecanal (22.9%). Oxygenated sesquiterpenes (6.5%) and monoterpenes (6.4%) were also identified. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9698913#.UeO7QWF2_n4
