[article] in The journal of essential oil research > Vol. 18 N° 6 (Novembre-Décembre 2006) . - pp. 591-599 | Titre : | An investigation of the leaf oils of the western australian broombush complex (Melaleuca uncinata sens. lat.) (Myrtaceae) | | Type de document : | texte imprimé | | Auteurs : | Joseph J. Brophy, Auteur ; Robert J. Goldsack, Auteur ; Lyn A. Craven, Auteur | | Année de publication : | 2006 | | Article en page(s) : | pp. 591-599 | | Note générale : | Génie Chimique | | Langues : | Anglais (eng) | | Mots-clés : | Melaleuca atroviridis Melaleuca concreta Melaleuca exuvia Melaleuca hamata Melaleuca interioris Melaleuca osullivanii Melaleuca scalene Melaleuca stereophloia Melaleuca uncinata Melaleuca vinnula Melaleuca zetetico-rum Myrtaceae Broombush Essential oil composition α-pinene 1,8-cineole Linalool Terpinen-4-ol p-cymene γ-terpinene Spathulenol | | Résumé : | The leaf oils of the 11 recorded Western Australian species of the broombush complex of the genus Melaleuca have been examined by a combination of GC and GC/MS. Melaleuca atroviridis produced a monoterpenic leaf oil with α-pinene (11.0%) and 1,8-cineole (73.2%) being the principal components. Melaleuca concreta showed the presence of three chemotypes, one of which was rich in terpinen-4-ol (35.4%), while a second was rich in 1,8-cineole (58–81%). A third chemotype contained signifcant amounts of α-pinene (16.7%), 1,8-cineole (28.4%) and globulol (11.3%). Melaleuca exuvia produced a monoterpenic oil, which appeared to exist in two chemotypes, which contained α-pinene (13–23%), 1,8-cineole (56–67%), terpinen-4-ol (0.1–2%) and α-terpineol (3–7%) in one form and α-pinene (5–7%), 1,8-cineole (28–38%), terpinen-4-ol (11–17%) and α-terpineol (3–4%) in the second form. Melaleuca hamata produced a leaf oil that was dominated by monoterpenes. There appeared to be two chemotypes present, one in which terpinen-4-ol (41.6%) was the major component and a second chemotype in which 1,8-cineole (40.0%) and linalool (33.9%) were the principal components. Melaleuca interioris (from one population) contained a mixture of mono- and sesquiterpenes, in which sesquiterpenes predominated. Melaleuca osullivanii gave a leaf oil in which sesquiterpenes predominated, the principal component being spathulenol (10–18%). Melaleuca scalena produced a leaf oil dominated by monoterpenes, with α-pinene (25–31%) and 1,8-cineole (43–55%) being the principal components. Melaleuca stereophloia was dominated by monoterpenes of which the principal component was 1,8-cineole (78–83%). Melaleuca uncinata sens. strict. existed in a variety of forms one of which had major amounts of 1,8-cineole (44–56%), while a second contained major amounts of terpinen-4-ol (21–31%), γ-terpinene (10–14%) and α-terpinene (6–8%). Melaleuca vinnula appeared to exist in two chemotypes, one of which was rich in α-pinene (65.3%), while the second chemotype was rich in 1,8-cineole (60.6%). Melaleuca zeteticorum produced a leaf oil that was overwhelmingly monoterpene in character, the principal component being 1,8-cineole (63–68%). | | ISSN : | 1041-2905 | | En ligne : | http://www.tandfonline.com/doi/abs/10.1080/10412905.2006.9699176#.UXKGBUqC5mM |
[article] An investigation of the leaf oils of the western australian broombush complex (Melaleuca uncinata sens. lat.) (Myrtaceae) [texte imprimé] / Joseph J. Brophy, Auteur ; Robert J. Goldsack, Auteur ; Lyn A. Craven, Auteur . - 2006 . - pp. 591-599. Génie Chimique Langues : Anglais ( eng) in The journal of essential oil research > Vol. 18 N° 6 (Novembre-Décembre 2006) . - pp. 591-599 | Mots-clés : | Melaleuca atroviridis Melaleuca concreta Melaleuca exuvia Melaleuca hamata Melaleuca interioris Melaleuca osullivanii Melaleuca scalene Melaleuca stereophloia Melaleuca uncinata Melaleuca vinnula Melaleuca zetetico-rum Myrtaceae Broombush Essential oil composition α-pinene 1,8-cineole Linalool Terpinen-4-ol p-cymene γ-terpinene Spathulenol | | Résumé : | The leaf oils of the 11 recorded Western Australian species of the broombush complex of the genus Melaleuca have been examined by a combination of GC and GC/MS. Melaleuca atroviridis produced a monoterpenic leaf oil with α-pinene (11.0%) and 1,8-cineole (73.2%) being the principal components. Melaleuca concreta showed the presence of three chemotypes, one of which was rich in terpinen-4-ol (35.4%), while a second was rich in 1,8-cineole (58–81%). A third chemotype contained signifcant amounts of α-pinene (16.7%), 1,8-cineole (28.4%) and globulol (11.3%). Melaleuca exuvia produced a monoterpenic oil, which appeared to exist in two chemotypes, which contained α-pinene (13–23%), 1,8-cineole (56–67%), terpinen-4-ol (0.1–2%) and α-terpineol (3–7%) in one form and α-pinene (5–7%), 1,8-cineole (28–38%), terpinen-4-ol (11–17%) and α-terpineol (3–4%) in the second form. Melaleuca hamata produced a leaf oil that was dominated by monoterpenes. There appeared to be two chemotypes present, one in which terpinen-4-ol (41.6%) was the major component and a second chemotype in which 1,8-cineole (40.0%) and linalool (33.9%) were the principal components. Melaleuca interioris (from one population) contained a mixture of mono- and sesquiterpenes, in which sesquiterpenes predominated. Melaleuca osullivanii gave a leaf oil in which sesquiterpenes predominated, the principal component being spathulenol (10–18%). Melaleuca scalena produced a leaf oil dominated by monoterpenes, with α-pinene (25–31%) and 1,8-cineole (43–55%) being the principal components. Melaleuca stereophloia was dominated by monoterpenes of which the principal component was 1,8-cineole (78–83%). Melaleuca uncinata sens. strict. existed in a variety of forms one of which had major amounts of 1,8-cineole (44–56%), while a second contained major amounts of terpinen-4-ol (21–31%), γ-terpinene (10–14%) and α-terpinene (6–8%). Melaleuca vinnula appeared to exist in two chemotypes, one of which was rich in α-pinene (65.3%), while the second chemotype was rich in 1,8-cineole (60.6%). Melaleuca zeteticorum produced a leaf oil that was overwhelmingly monoterpene in character, the principal component being 1,8-cineole (63–68%). | | ISSN : | 1041-2905 | | En ligne : | http://www.tandfonline.com/doi/abs/10.1080/10412905.2006.9699176#.UXKGBUqC5mM |
|
Affiner la rechercheAn examination of the leaf essential oils of the endemic Melaleuca (Myrtaceae) species of New Caledonia / Edouard Hnawia in The journal of essential oil research, Vol. 24 N° 3 (Juin 2012)
