Documents disponibles écrits par cet auteur

Chemical composition of the essential oils of achillea millefolium L. isolated by different distillation methods / Carlo I. G. Tuberoso in The journal of essential oil research, Vol. 21 N° 2+ supplément vol.20 (Mars/Avril 2009+ supplément 2008) 

Public ISBD [article]  in The journal of essential oil research > Vol. 21 N° 2+ supplément vol.20 (Mars/Avril 2009+ supplément 2008) . - pp. 108-111 Titre : Chemical composition of the essential oils of achillea millefolium L. isolated by different distillation methods Type de document : texte imprimé Auteurs : Carlo I. G. Tuberoso, Auteur ; Adam Kowalczyk, Auteur Article en page(s) : pp. 108-111 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Achillea  millefolium  Asteraceae  Distillation  methods  Essential  oil  composition  1,8-cineole  sabinene  γ-eudesmol Index. décimale : 646 Résumé : The chemical composition of the essential oil from flowering tops of Achillea millefolium L. isolated by different distillation methods was studied. Samples were hydrodistilled with Clevenger-type (HD), simultaneous microdistillation-extraction (SMDE), and microwave (MAHD) apparatus. The yields were 0.46% ± 0.03 for the HD and 0.48% ± 0.03 for the MAHD (v/w, volume/dry weight). The oils were analyzed by GC and GC/MS and a total of 58 components were detected. The major compounds in the oils were 1,8-cineole (10.4–17.2%), sabinene (11.6–14.6%), α-terpineol (4.4–5.2%), terpinen-4-ol (2.4–5.7%), and, among sesquiterpenes, γ-eudesmol (8.7–17.9%) and 6S,7Rbisabolone (4.4–14.9%). From a qualitative point of view, no relevant differences between the different methods of isolation were observed, while statistically significant differences on relative percentage were noticed. Oils obtained by HD showed a higher amount of monoterpenoid compounds (69.2%), while L-SMDE, H-SMDE and MAHD were richer in sesquiterpenes (47.9%, 42.7% and 47.6%, respectively). DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.jeoronline.com/archive/detail/42#top [article] Chemical composition of the essential oils of achillea millefolium L. isolated by different distillation methods [texte imprimé] / Carlo I. G. Tuberoso, Auteur ; Adam Kowalczyk, Auteur . - pp. 108-111. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 21 N° 2+ supplément vol.20 (Mars/Avril 2009+ supplément 2008) . - pp. 108-111 Mots-clés : Achillea  millefolium  Asteraceae  Distillation  methods  Essential  oil  composition  1,8-cineole  sabinene  γ-eudesmol Index. décimale : 646 Résumé : The chemical composition of the essential oil from flowering tops of Achillea millefolium L. isolated by different distillation methods was studied. Samples were hydrodistilled with Clevenger-type (HD), simultaneous microdistillation-extraction (SMDE), and microwave (MAHD) apparatus. The yields were 0.46% ± 0.03 for the HD and 0.48% ± 0.03 for the MAHD (v/w, volume/dry weight). The oils were analyzed by GC and GC/MS and a total of 58 components were detected. The major compounds in the oils were 1,8-cineole (10.4–17.2%), sabinene (11.6–14.6%), α-terpineol (4.4–5.2%), terpinen-4-ol (2.4–5.7%), and, among sesquiterpenes, γ-eudesmol (8.7–17.9%) and 6S,7Rbisabolone (4.4–14.9%). From a qualitative point of view, no relevant differences between the different methods of isolation were observed, while statistically significant differences on relative percentage were noticed. Oils obtained by HD showed a higher amount of monoterpenoid compounds (69.2%), while L-SMDE, H-SMDE and MAHD were richer in sesquiterpenes (47.9%, 42.7% and 47.6%, respectively). DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.jeoronline.com/archive/detail/42#top