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Détail de l'auteur
Auteur Roy B. R. Porter
Documents disponibles écrits par cet auteur
Affiner la rechercheChemical composition and insecticidal activity of the essential oils from bursera hollickii (Britton) found in Jamaica / Grace-Ann O. Junor in The journal of essential oil research, Vol. 20 n°6 (Novembre/Décembre 2008)
[article]
in The journal of essential oil research > Vol. 20 n°6 (Novembre/Décembre 2008) . - pp. 560-565
Titre : Chemical composition and insecticidal activity of the essential oils from bursera hollickii (Britton) found in Jamaica Type de document : texte imprimé Auteurs : Grace-Ann O. Junor, Auteur ; Roy B. R. Porter, Auteur ; Trevor H. Yee, Auteur Année de publication : 2009 Article en page(s) : pp. 560-565 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Bursera hollickii Burseraceae Essential oil composition α-pinene β-pinene Terpinolene Cylas formicarius elegantulus Antioxidant activity Insecticidal activity Résumé : The essential oils from the leaves and bark of Bursera hollickii (Britton) collected from Long Mountain, St. Andrew, Jamaica were extracted by hydrodistillation and analyzed by GC and GC/MS. Sixty-two (62) components were identified from the leaf oils which constituted ca. 99% of the oils, while sixty-three (63) components were identified from the bark oils which constituted ca. 97% of the oils. Monoterpenes represented the major components of the oils with α-pinene (49.8% and 34.8%), β-pinene (11.0% and 10.6%), terpinolene (0.7% and 13.4%) and α-terpineol (5.7% and 8.9%) being the major component. Of the sesquiterpenes, the predominant components were β-caryophyllene (4.8% and trace) and α-humulene (3.4% and 0.7%). The oil exhibited toxic action against adult sweet potato weevils, Cylas formicarius elegantulus (Summer), the most destructive pest of sweet potato (Ipomoea batatas). No antioxidant activity was observed for the oils when subjected to the DPPH assay. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2008.9700088 [article] Chemical composition and insecticidal activity of the essential oils from bursera hollickii (Britton) found in Jamaica [texte imprimé] / Grace-Ann O. Junor, Auteur ; Roy B. R. Porter, Auteur ; Trevor H. Yee, Auteur . - 2009 . - pp. 560-565.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 20 n°6 (Novembre/Décembre 2008) . - pp. 560-565
Mots-clés : Bursera hollickii Burseraceae Essential oil composition α-pinene β-pinene Terpinolene Cylas formicarius elegantulus Antioxidant activity Insecticidal activity Résumé : The essential oils from the leaves and bark of Bursera hollickii (Britton) collected from Long Mountain, St. Andrew, Jamaica were extracted by hydrodistillation and analyzed by GC and GC/MS. Sixty-two (62) components were identified from the leaf oils which constituted ca. 99% of the oils, while sixty-three (63) components were identified from the bark oils which constituted ca. 97% of the oils. Monoterpenes represented the major components of the oils with α-pinene (49.8% and 34.8%), β-pinene (11.0% and 10.6%), terpinolene (0.7% and 13.4%) and α-terpineol (5.7% and 8.9%) being the major component. Of the sesquiterpenes, the predominant components were β-caryophyllene (4.8% and trace) and α-humulene (3.4% and 0.7%). The oil exhibited toxic action against adult sweet potato weevils, Cylas formicarius elegantulus (Summer), the most destructive pest of sweet potato (Ipomoea batatas). No antioxidant activity was observed for the oils when subjected to the DPPH assay. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2008.9700088 The chemical composition of the essential oils from the leaves, bark and fruits of bursera simaruba (L.) sarg. from Jamaica / Grace-Ann O. Junor in The journal of essential oil research, Vol. 20 N°5 (Septembre/Octobre 2008)
[article]
in The journal of essential oil research > Vol. 20 N°5 (Septembre/Octobre 2008) . - pp. 426-429
Titre : The chemical composition of the essential oils from the leaves, bark and fruits of bursera simaruba (L.) sarg. from Jamaica Type de document : texte imprimé Auteurs : Grace-Ann O. Junor, Auteur ; Roy B. R. Porter, Auteur ; Trevor H. Yee, Auteur Année de publication : 2008 Article en page(s) : pp. 426-429 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Bursera simaruba Burseraceae Essential oil composition α-pinene β-pinene Terpinen-4-ol Résumé : Oils of the leaves, bark and fruits of Bursera simaruba collected from the Long Mountain region of Jamaica were isolated by hydrodistillation and analyzed by GC-FID and GC/MS. From our analyses of the oils from the leaves, bark and fruits 46, 54 and 19 components were identified which constituted 93.6%, 97.9% and 100% of the total oils. The leaf oils were dominated by sesquiterpenes (70.1%), the major ones being trans-cadina-1(6),4-diene (9.7%) followed by β-caryophyllene (9.0%), α-humulene (6.2%), β-elemene (5.6%) α-cadinol (4.7%), α-selin-11-en-4-ol (4.2%), caryophyllene oxide (3.2%) and δ-selinene (3.1%). The major monoterpenes were α-pinene (10.2%), myrcene (5.2%) and β-pinene (3.4%). The major monoterpene components of the bark were α-pinene (32.1%), β-pinene (13.5%) and isolimonene (5.6%) while the major sesquiterpenes were viridiflorol (7.1%), β-caryophyllene (4.9%), β-selinene (4.3%), α-humulene (3.1%) and caryophyllene oxide (3.1%). The fruit oil was characterized by a high portion of monoterpenes, the major ones being α-pinene (27.8%), β-pinene (24.1%), terpinen-4-ol (13.3%), sabinene (8.1%), iso-sylvestrene (4.9%), limonene (4.4%) and γ-terpinolene (3.5%). ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2008.9700048 [article] The chemical composition of the essential oils from the leaves, bark and fruits of bursera simaruba (L.) sarg. from Jamaica [texte imprimé] / Grace-Ann O. Junor, Auteur ; Roy B. R. Porter, Auteur ; Trevor H. Yee, Auteur . - 2008 . - pp. 426-429.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 20 N°5 (Septembre/Octobre 2008) . - pp. 426-429
Mots-clés : Bursera simaruba Burseraceae Essential oil composition α-pinene β-pinene Terpinen-4-ol Résumé : Oils of the leaves, bark and fruits of Bursera simaruba collected from the Long Mountain region of Jamaica were isolated by hydrodistillation and analyzed by GC-FID and GC/MS. From our analyses of the oils from the leaves, bark and fruits 46, 54 and 19 components were identified which constituted 93.6%, 97.9% and 100% of the total oils. The leaf oils were dominated by sesquiterpenes (70.1%), the major ones being trans-cadina-1(6),4-diene (9.7%) followed by β-caryophyllene (9.0%), α-humulene (6.2%), β-elemene (5.6%) α-cadinol (4.7%), α-selin-11-en-4-ol (4.2%), caryophyllene oxide (3.2%) and δ-selinene (3.1%). The major monoterpenes were α-pinene (10.2%), myrcene (5.2%) and β-pinene (3.4%). The major monoterpene components of the bark were α-pinene (32.1%), β-pinene (13.5%) and isolimonene (5.6%) while the major sesquiterpenes were viridiflorol (7.1%), β-caryophyllene (4.9%), β-selinene (4.3%), α-humulene (3.1%) and caryophyllene oxide (3.1%). The fruit oil was characterized by a high portion of monoterpenes, the major ones being α-pinene (27.8%), β-pinene (24.1%), terpinen-4-ol (13.3%), sabinene (8.1%), iso-sylvestrene (4.9%), limonene (4.4%) and γ-terpinolene (3.5%). ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2008.9700048 The volatile constituents from the leaves, bark and fruits of bursera aromatica (Proctor) found in Jamaica / Grace-Ann O. Junor in The journal of essential oil research, Vol. 22 N° 1 (Janvier/Fevrier 2010)
[article]
in The journal of essential oil research > Vol. 22 N° 1 (Janvier/Fevrier 2010) . - pp. 19-22
Titre : The volatile constituents from the leaves, bark and fruits of bursera aromatica (Proctor) found in Jamaica Type de document : texte imprimé Auteurs : Grace-Ann O. Junor, Auteur ; Roy B. R. Porter, Auteur ; Trevor H. Yee, Auteur Article en page(s) : pp. 19-22 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Bursera aromatica Burseraceae Essential oil composition Nonane α-copaene β-caryophyllene δ-cadinene Viridiflorol Index. décimale : 646 Résumé : The essential oil from the leaves, bark and fruits of Bursera aromatica (Burseraceae) collected from the Cockpit Country region of Jamaica were obtained by hydrodistillation in 0.03%, 0.09% and 1.12% (w/w) yields, respectively, and were analyzed by GC-FID and GC/MS.
Thirty-eight constituents of the leaf oil (92.1%), 26 constituents of the bark oil (96.5%), and 27 constituents of the fruit oil (93.5%) were identified.
The predominant compounds were nonane (14.7%, 5.2% and 23.7%), α-copaene (15.8%, 23.7% and 14.0%), β-caryophyllene (21.7%, 12.8% and 6.8%), δ-cadinene (11.3%, 21.5% and 4.3%) and viridiflorol (5.9%, 11.8% and 7.9%) in the oils from the leaves, bark and fruits, respectively.
In addition to the components listed above, β-pinene (7.0%) and limonene (8.0%) were also among the major components of the fruit oil.DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.jeoronline.com/archive/detail/47 [article] The volatile constituents from the leaves, bark and fruits of bursera aromatica (Proctor) found in Jamaica [texte imprimé] / Grace-Ann O. Junor, Auteur ; Roy B. R. Porter, Auteur ; Trevor H. Yee, Auteur . - pp. 19-22.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 22 N° 1 (Janvier/Fevrier 2010) . - pp. 19-22
Mots-clés : Bursera aromatica Burseraceae Essential oil composition Nonane α-copaene β-caryophyllene δ-cadinene Viridiflorol Index. décimale : 646 Résumé : The essential oil from the leaves, bark and fruits of Bursera aromatica (Burseraceae) collected from the Cockpit Country region of Jamaica were obtained by hydrodistillation in 0.03%, 0.09% and 1.12% (w/w) yields, respectively, and were analyzed by GC-FID and GC/MS.
Thirty-eight constituents of the leaf oil (92.1%), 26 constituents of the bark oil (96.5%), and 27 constituents of the fruit oil (93.5%) were identified.
The predominant compounds were nonane (14.7%, 5.2% and 23.7%), α-copaene (15.8%, 23.7% and 14.0%), β-caryophyllene (21.7%, 12.8% and 6.8%), δ-cadinene (11.3%, 21.5% and 4.3%) and viridiflorol (5.9%, 11.8% and 7.9%) in the oils from the leaves, bark and fruits, respectively.
In addition to the components listed above, β-pinene (7.0%) and limonene (8.0%) were also among the major components of the fruit oil.DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.jeoronline.com/archive/detail/47