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Analysis of the essential oil of dialium guineense willd / Emmanuel Essien in The journal of essential oil research, Vol. 19 N°6 (Novembre/Decembre 2007) 

Public ISBD [article]  in The journal of essential oil research > Vol. 19 N°6 (Novembre/Decembre 2007) . - pp. 545-547 Titre : Analysis of the essential oil of dialium guineense willd Type de document : texte imprimé Auteurs : Emmanuel Essien, Auteur ; Isiaka, A. Ogunwande, Auteur ; Akinola O. Ogunbinu, Auteur Année de publication : 2008 Article en page(s) : pp. 545-547 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Dialium  guineense  Cesalpiniaceae  Essential  oil  composition  Precocene  I Résumé : The essential oil of Dialium guineense Willd., grown in Nigeria has been studied by GC and GC/MS. Precocene I (78.8%) was the most singly abundant constituent, with a significant proportion of β-caryophyllene (5.3%). With the exception of valencene and cadalene, all other constituents were present in amount less than 1%. The large content of precocene I in the oil is of taxonomic interest. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2007.9699327#.UXJZFkqC5mM [article] Analysis of the essential oil of dialium guineense willd [texte imprimé] / Emmanuel Essien, Auteur ; Isiaka, A. Ogunwande, Auteur ; Akinola O. Ogunbinu, Auteur . - 2008 . - pp. 545-547. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 19 N°6 (Novembre/Decembre 2007) . - pp. 545-547 Mots-clés : Dialium  guineense  Cesalpiniaceae  Essential  oil  composition  Precocene  I Résumé : The essential oil of Dialium guineense Willd., grown in Nigeria has been studied by GC and GC/MS. Precocene I (78.8%) was the most singly abundant constituent, with a significant proportion of β-caryophyllene (5.3%). With the exception of valencene and cadalene, all other constituents were present in amount less than 1%. The large content of precocene I in the oil is of taxonomic interest. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2007.9699327#.UXJZFkqC5mM

Eclipta indica L. (Asteraceae) / Akinola O. Ogunbinu in The journal of essential oil research, Vol. 19 N°4 (Juillet/Août 2007) 

Public ISBD [article]  in The journal of essential oil research > Vol. 19 N°4 (Juillet/Août 2007) . - pp. 362-363 Titre : Eclipta indica L. (Asteraceae) : A source of 2-tridecanone Type de document : texte imprimé Auteurs : Akinola O. Ogunbinu, Auteur ; Isiaka, A. Ogunwande, Auteur ; Pier L. Cioni, Auteur Année de publication : 2007 Article en page(s) : pp. 362-363 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Eclipta  indica  Asteraceae  Essential  oil  composition  2-tridecanone Résumé : The volatile oil obtained by hydrodistillation from the leaf of Eclipta indica L. was analyzed for its constituents by means of GC and GC/MS. 2-Tridecanone (89.7%), a straight chain ketone, was the singly most abundant constituent. Caryophyllene oxide (3.9%) and β-caryophyllene (2.6%) were the other compounds occurring in sizeable proportions. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2007.9699306#.UW5HMUqC5mP [article] Eclipta indica L. (Asteraceae) : A source of 2-tridecanone [texte imprimé] / Akinola O. Ogunbinu, Auteur ; Isiaka, A. Ogunwande, Auteur ; Pier L. Cioni, Auteur . - 2007 . - pp. 362-363. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 19 N°4 (Juillet/Août 2007) . - pp. 362-363 Mots-clés : Eclipta  indica  Asteraceae  Essential  oil  composition  2-tridecanone Résumé : The volatile oil obtained by hydrodistillation from the leaf of Eclipta indica L. was analyzed for its constituents by means of GC and GC/MS. 2-Tridecanone (89.7%), a straight chain ketone, was the singly most abundant constituent. Caryophyllene oxide (3.9%) and β-caryophyllene (2.6%) were the other compounds occurring in sizeable proportions. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2007.9699306#.UW5HMUqC5mP

Essential oil-bearing plants from Nigeria: studies on vernonia perrottettii (Leaf and Stem Bark), young leaves from eucalyptus decaisneana and immature leaves of hyptis suaveolens / Akinola O. Ogunbinu 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. 154-158 Titre : Essential oil-bearing plants from Nigeria: studies on vernonia perrottettii (Leaf and Stem Bark), young leaves from eucalyptus decaisneana and immature leaves of hyptis suaveolens Type de document : texte imprimé Auteurs : Akinola O. Ogunbinu, Auteur ; Sunday O. Okeniyi, Auteur ; Guido Flamini, Auteur Article en page(s) : pp. 154-158 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Vernonia  perrottettii  Asteraceae  Eucalyptus  decaisneana  Myrtaceae  Hyptis  suaveolens  Lamiaceae  Essential  oil  composition  β-caryophyllene  α-phellandrene  p-cymene  γ-terpinene  caryophyllene  oxide  Germacrene  D Index. décimale : 646 Résumé : The essential oils from four medicinal plants from Nigeria were obtained by hydrodistillation and analyzed by means of GC and GC/MS. The main constituents of the leaf and stem oils of Vernonia perrottettii Sch. Bip. (Asteraceae) were sesquiterpene hydrocarbons (92.1%) with abundance of β-caryophyllene (28.1% & 39.8%) and germacrene D (34.5% & 16.0%) in the leaf and stem oils, respectively. On the other hand, the leaf oil of Eucalyptus decaisneana Sm. (Myrtaceae) was dominated by the monoterpene hydrocarbons (90.6%) with α-phellandrene (31.1%), p-cymene (20.8%) and γ-terpinene (11.7%) being present in large quantities. The oil composition of immature leaf of Hyptis suaveolens L. (Lamiaceae) revealed the abundance of β-caryophyllene (22.3%), α-phellandrene (10.6%) and caryophyllene oxide (10.3%). The compositional pattern may probably lead to the delineation of a new chemotype of this species. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.jeoronline.com/archive/detail/42#top [article] Essential oil-bearing plants from Nigeria: studies on vernonia perrottettii (Leaf and Stem Bark), young leaves from eucalyptus decaisneana and immature leaves of hyptis suaveolens [texte imprimé] / Akinola O. Ogunbinu, Auteur ; Sunday O. Okeniyi, Auteur ; Guido Flamini, Auteur . - pp. 154-158. 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. 154-158 Mots-clés : Vernonia  perrottettii  Asteraceae  Eucalyptus  decaisneana  Myrtaceae  Hyptis  suaveolens  Lamiaceae  Essential  oil  composition  β-caryophyllene  α-phellandrene  p-cymene  γ-terpinene  caryophyllene  oxide  Germacrene  D Index. décimale : 646 Résumé : The essential oils from four medicinal plants from Nigeria were obtained by hydrodistillation and analyzed by means of GC and GC/MS. The main constituents of the leaf and stem oils of Vernonia perrottettii Sch. Bip. (Asteraceae) were sesquiterpene hydrocarbons (92.1%) with abundance of β-caryophyllene (28.1% & 39.8%) and germacrene D (34.5% & 16.0%) in the leaf and stem oils, respectively. On the other hand, the leaf oil of Eucalyptus decaisneana Sm. (Myrtaceae) was dominated by the monoterpene hydrocarbons (90.6%) with α-phellandrene (31.1%), p-cymene (20.8%) and γ-terpinene (11.7%) being present in large quantities. The oil composition of immature leaf of Hyptis suaveolens L. (Lamiaceae) revealed the abundance of β-caryophyllene (22.3%), α-phellandrene (10.6%) and caryophyllene oxide (10.3%). The compositional pattern may probably lead to the delineation of a new chemotype of this species. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.jeoronline.com/archive/detail/42#top

Essential oil constituents of klainedoxa gabonensis pierre ex engl (Irvingiaceae), brachystegia nigerica hoyle et A. jones (Caesalpinioideae) and acalypha segetalis (Muell.) arg., (Euphorbiaceae)a / Isiaka, A. Ogunwande in The journal of essential oil research, Vol. 20 n°3 (Mai/Juin 2008) 

Public ISBD [article]  in The journal of essential oil research > Vol. 20 n°3 (Mai/Juin 2008) . - pp. 211-215 Titre : Essential oil constituents of klainedoxa gabonensis pierre ex engl (Irvingiaceae), brachystegia nigerica hoyle et A. jones (Caesalpinioideae) and acalypha segetalis (Muell.) arg., (Euphorbiaceae)a Type de document : texte imprimé Auteurs : Isiaka, A. Ogunwande, Auteur ; Emmanuel E. Essien, Auteur ; Akinola O. Ogunbinu, Auteur Année de publication : 2008 Article en page(s) : pp. 211-215 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Klainedoxa  gabonensis  Irvingiaceae  Brachystegia  nigerica  Caesalpinioideae  Acalypha  segetalis  Euphorbiaceae  Essential  oil  composition  Geranyl  acetone  Linalool  α-pinene  1,  8-cineole  β-bourbonene  (E)-α-ionone  β-selinene  (E)-phytol Résumé : The volatile composition of Klainedoxa gabonensis Pierre ex Engl., Brachystegia nigerica Hoyle et A. Jones and Acalypha segetalis Muell Arg., has been studied. The essential oils were obtained by hydrodistillation in a modified Clevenger-type apparatus while the analyses were performed by GC and GC/MS. The main constituents of K. gabonensis oils were geranyl acetone (13.8%), β-bourbonene (11.1%) and (?)-α-ionone (10.5%) from the leaves; linalool (17.4%), 1, 8-cineole (9.9%) and 1-octen-3-ol (8.0%) from the stem bark, with 1, 2, 3-trimethylbenzene (9.8%), 1-ethyl-2-methyl benzene (9.1%), pentyl benzene(9.1%) and methyl salicylate (9.1%) occurring in higher proportions in the root oil. The leaf oil of B. nigerica was dominated by α-pinene (17.7%), β-selinene (12.5%) and α-gurjunene (8.8%). The main compounds identified in the oil of A. segetalis were α-pinene (29.8%), 1, 8-cineole (16.2%), (?)-phytol (11.8%) and δ-3-carene (9.8%). The present investigation may represent the first of its kind on the characterization of the volatile constituents of the studied plant samples. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2008.9699994 [article] Essential oil constituents of klainedoxa gabonensis pierre ex engl (Irvingiaceae), brachystegia nigerica hoyle et A. jones (Caesalpinioideae) and acalypha segetalis (Muell.) arg., (Euphorbiaceae)a [texte imprimé] / Isiaka, A. Ogunwande, Auteur ; Emmanuel E. Essien, Auteur ; Akinola O. Ogunbinu, Auteur . - 2008 . - pp. 211-215. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 20 n°3 (Mai/Juin 2008) . - pp. 211-215 Mots-clés : Klainedoxa  gabonensis  Irvingiaceae  Brachystegia  nigerica  Caesalpinioideae  Acalypha  segetalis  Euphorbiaceae  Essential  oil  composition  Geranyl  acetone  Linalool  α-pinene  1,  8-cineole  β-bourbonene  (E)-α-ionone  β-selinene  (E)-phytol Résumé : The volatile composition of Klainedoxa gabonensis Pierre ex Engl., Brachystegia nigerica Hoyle et A. Jones and Acalypha segetalis Muell Arg., has been studied. The essential oils were obtained by hydrodistillation in a modified Clevenger-type apparatus while the analyses were performed by GC and GC/MS. The main constituents of K. gabonensis oils were geranyl acetone (13.8%), β-bourbonene (11.1%) and (?)-α-ionone (10.5%) from the leaves; linalool (17.4%), 1, 8-cineole (9.9%) and 1-octen-3-ol (8.0%) from the stem bark, with 1, 2, 3-trimethylbenzene (9.8%), 1-ethyl-2-methyl benzene (9.1%), pentyl benzene(9.1%) and methyl salicylate (9.1%) occurring in higher proportions in the root oil. The leaf oil of B. nigerica was dominated by α-pinene (17.7%), β-selinene (12.5%) and α-gurjunene (8.8%). The main compounds identified in the oil of A. segetalis were α-pinene (29.8%), 1, 8-cineole (16.2%), (?)-phytol (11.8%) and δ-3-carene (9.8%). The present investigation may represent the first of its kind on the characterization of the volatile constituents of the studied plant samples. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2008.9699994

Sesquiterpenes-rich essential oils of polyalthia longifolia thw. (Annonaceae) from Nigeria / Akinola O. Ogunbinu in The journal of essential oil research, Vol. 19 N°5 (Septembre/Octobre 2007) 

Public ISBD [article]  in The journal of essential oil research > Vol. 19 N°5 (Septembre/Octobre 2007) . - pp. 419-421 Titre : Sesquiterpenes-rich essential oils of polyalthia longifolia thw. (Annonaceae) from Nigeria Type de document : texte imprimé Auteurs : Akinola O. Ogunbinu, Auteur ; Isiaka, A. Ogunwande, Auteur ; Emmanuel Essien, Auteur Année de publication : 2007 Article en page(s) : pp. 419-421 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Polyalthia  longifolia  Annonaceae  Essential  oil  composition  Allo-aromadendrene  Caryophyllene  oxide  β-caryo-phyllene Résumé : The essential oils of the leaf and stem bark of Polyalthia longifolia Thw. (Annonaceae) have been studied for their constituents by means of GC and GC/MS. The leaf oil was almost exclusively composed of sesquiterpene derivatives, being represented by allo-aromadendrene (19.7%), caryophyllene oxide (14.4%), β-caryophyllene (13.0%), β-selinene (7.9%), α-humulene (7.0%) and ar-curcumene (6.8%). However, α-copaene and α-muurolol (ca. 8.7%), β-selinene (8.6%), viridiflorene (8.1%), α-guaiene (7.8%), allo-aromadendrene (7.4%) and δ-cadinene (7.0%) were the major constituents occurring in the oil of the bark sample. All the other sesquiterpenoid compounds were observed in amount greater than 1%. α-Pinene (0.5%) and camphene (tr), which are the two monoterpenoids present in the leaf oil, could not be detected from the bark essential oil. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2007.9699941#.UXAsdUqC5mM [article] Sesquiterpenes-rich essential oils of polyalthia longifolia thw. (Annonaceae) from Nigeria [texte imprimé] / Akinola O. Ogunbinu, Auteur ; Isiaka, A. Ogunwande, Auteur ; Emmanuel Essien, Auteur . - 2007 . - pp. 419-421. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 19 N°5 (Septembre/Octobre 2007) . - pp. 419-421 Mots-clés : Polyalthia  longifolia  Annonaceae  Essential  oil  composition  Allo-aromadendrene  Caryophyllene  oxide  β-caryo-phyllene Résumé : The essential oils of the leaf and stem bark of Polyalthia longifolia Thw. (Annonaceae) have been studied for their constituents by means of GC and GC/MS. The leaf oil was almost exclusively composed of sesquiterpene derivatives, being represented by allo-aromadendrene (19.7%), caryophyllene oxide (14.4%), β-caryophyllene (13.0%), β-selinene (7.9%), α-humulene (7.0%) and ar-curcumene (6.8%). However, α-copaene and α-muurolol (ca. 8.7%), β-selinene (8.6%), viridiflorene (8.1%), α-guaiene (7.8%), allo-aromadendrene (7.4%) and δ-cadinene (7.0%) were the major constituents occurring in the oil of the bark sample. All the other sesquiterpenoid compounds were observed in amount greater than 1%. α-Pinene (0.5%) and camphene (tr), which are the two monoterpenoids present in the leaf oil, could not be detected from the bark essential oil. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2007.9699941#.UXAsdUqC5mM