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Détail de l'auteur
Auteur Betül Demirci
Documents disponibles écrits par cet auteur
Affiner la rechercheAnalysis of the volatile constituents of asian hypericum L. (Clusiaceae, Hyperidoideae) species / Betül Demirci in The journal of essential oil research, Vol. 17 N° 6 (Novembre-Décembre 2005)
[article]
in The journal of essential oil research > Vol. 17 N° 6 (Novembre-Décembre 2005) . - pp. 659-663
Titre : Analysis of the volatile constituents of asian hypericum L. (Clusiaceae, Hyperidoideae) species Type de document : texte imprimé Auteurs : Betül Demirci, Auteur ; K. Hüsnü Can Baser, Auteur ; Sara L. Crockett, Auteur Année de publication : 2006 Article en page(s) : pp. 659-663 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Hypericum acmosepalum Hypericum beanii Hypericum calycinum Hypericum choisyanum Hypericum forrestii Hypericum kouytchense Hypericum lancasteri Hypericum leschenaultii Hypericum monogynum Hypericum patulum Hypericum pseudohenryi Hypericum xmoserianum St. John's Wort Clusiaceae Essential oil composition δ-cadinene Caryophyllene oxide Cuparene Ar-curcumene Cis-eudesma-6,11-diene Eudesmadienone Cis-β-guiaene γ-muurolene Myrcene α-pinene β-pinene βselinene α-terpineol Tricosane Résumé : Of the 57 species of the economically important genus Hypericum (St. John's Wort; Clusiaceae) occurring in China, only a small percentage have been previously phytochemically investigated. As part of our continuing research on the phytochemistry of Hypericum, the chemical compositions of volatiles isolated from 12 Chinese species were determined. Volatile constituents were isolated by microdistillation of dried and ground aerial material from flowering plants and subsequently analyzed by GC/MS. The major component(s) were identified as follows: ar-curcumene (12.6%) and β-selinene (16.3%) in H. acmosepalum; γ-muurolene (11.3%), β-selinene (16.3%) and caryophyllene oxide (18.7%) in H. beanii; α-terpineol (11.5%) and P-pinene (29.2%) in H. calycinum; cis-eudesma-6,11-diene (11.4%) in H. choisyanum; a-pinene (10.4%) and caryophyllene oxide (12.7%) in H. forrestii; cis-β-guiaene (10.7%) and γ-muurolene (12.4%) in H. kouytchense; β-selinene (11.4%) and eudesmadienone (10.8%) in H. lancasteri; cuparene (24.8%) and γ-muurolene (16.8%) in H. leschenaultii; tricosane (13.3%) and myrcene (10.4%) in H. monogynum; β-selinene (14.7%) in H. patulum; β-selinene (18.5%) in H. pseudohenryi; and γ-muurolene (10.7%) and δ-cadinene (10.2%) in H. X moserianum. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9699026#.Ub8REth-Tp8 [article] Analysis of the volatile constituents of asian hypericum L. (Clusiaceae, Hyperidoideae) species [texte imprimé] / Betül Demirci, Auteur ; K. Hüsnü Can Baser, Auteur ; Sara L. Crockett, Auteur . - 2006 . - pp. 659-663.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 17 N° 6 (Novembre-Décembre 2005) . - pp. 659-663
Mots-clés : Hypericum acmosepalum Hypericum beanii Hypericum calycinum Hypericum choisyanum Hypericum forrestii Hypericum kouytchense Hypericum lancasteri Hypericum leschenaultii Hypericum monogynum Hypericum patulum Hypericum pseudohenryi Hypericum xmoserianum St. John's Wort Clusiaceae Essential oil composition δ-cadinene Caryophyllene oxide Cuparene Ar-curcumene Cis-eudesma-6,11-diene Eudesmadienone Cis-β-guiaene γ-muurolene Myrcene α-pinene β-pinene βselinene α-terpineol Tricosane Résumé : Of the 57 species of the economically important genus Hypericum (St. John's Wort; Clusiaceae) occurring in China, only a small percentage have been previously phytochemically investigated. As part of our continuing research on the phytochemistry of Hypericum, the chemical compositions of volatiles isolated from 12 Chinese species were determined. Volatile constituents were isolated by microdistillation of dried and ground aerial material from flowering plants and subsequently analyzed by GC/MS. The major component(s) were identified as follows: ar-curcumene (12.6%) and β-selinene (16.3%) in H. acmosepalum; γ-muurolene (11.3%), β-selinene (16.3%) and caryophyllene oxide (18.7%) in H. beanii; α-terpineol (11.5%) and P-pinene (29.2%) in H. calycinum; cis-eudesma-6,11-diene (11.4%) in H. choisyanum; a-pinene (10.4%) and caryophyllene oxide (12.7%) in H. forrestii; cis-β-guiaene (10.7%) and γ-muurolene (12.4%) in H. kouytchense; β-selinene (11.4%) and eudesmadienone (10.8%) in H. lancasteri; cuparene (24.8%) and γ-muurolene (16.8%) in H. leschenaultii; tricosane (13.3%) and myrcene (10.4%) in H. monogynum; β-selinene (14.7%) in H. patulum; β-selinene (18.5%) in H. pseudohenryi; and γ-muurolene (10.7%) and δ-cadinene (10.2%) in H. X moserianum. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9699026#.Ub8REth-Tp8 Analysis of the volatile constituents of five african and mediterranean hypericum L. (Clusiaceae, Hypericoideae) species / Sara L. Crockett in The journal of essential oil research, Vol. 19 N°4 (Juillet/Août 2007)
[article]
in The journal of essential oil research > Vol. 19 N°4 (Juillet/Août 2007) . - pp. 302-306
Titre : Analysis of the volatile constituents of five african and mediterranean hypericum L. (Clusiaceae, Hypericoideae) species Type de document : texte imprimé Auteurs : Sara L. Crockett, Auteur ; Betül Demirci, Auteur ; K. Hüsnü Can Başer, Auteur Année de publication : 2007 Article en page(s) : pp. 302-306 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Hypericum aegypticum ssp. aegypticum Hypericum aegypticum ssp. marrocanum Hypericum balearicum Hypericum delphicum Hypericum roeperanum St. John's Wort Clusiaceae Hypericoideae Essential oil composition β-caryophyllene Caryophyllene oxide γ-curcumene β-eudesmol Ishwarane α-pinene β-pinene Undecane Résumé : The volatile constituents of five species of the medicinally and ornamentally valuable genus Hypericum L. (St. John's Wort; Clusiaceae), with native distributions in Africa and the Mediterranean regions of Europe and Asia, were examined as part of our continuing research on the phytochemistry of Hypericum. The dried and ground aerial material of flowering plants was subjected to microdistillation to isolate volatile compounds, which were subsequently analyzed by GC/MS. The major constituent(s) of H. balearicum were α-pinene (28.5%), β-pinene (20.4%), and β-eudesmol (11.2%); of H. delphicum were caryophyllene oxide (31.5%), β-caryophyllene (18.2%), and undecane (17.5%); of H. roeperanum was γ-curcumene (15.6%); of H. aegypticum ssp. aegypticum was ishwarane (14.4%); and of H. aegypticum ssp. marrocanum were caryophyllene oxide (29.2%) and β-caryophyllene (15.1%). This paper represents the first report, to our knowledge, of volatile constituents for these species. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2007.9699287#.UWu4A0qC5mM [article] Analysis of the volatile constituents of five african and mediterranean hypericum L. (Clusiaceae, Hypericoideae) species [texte imprimé] / Sara L. Crockett, Auteur ; Betül Demirci, Auteur ; K. Hüsnü Can Başer, Auteur . - 2007 . - pp. 302-306.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 19 N°4 (Juillet/Août 2007) . - pp. 302-306
Mots-clés : Hypericum aegypticum ssp. aegypticum Hypericum aegypticum ssp. marrocanum Hypericum balearicum Hypericum delphicum Hypericum roeperanum St. John's Wort Clusiaceae Hypericoideae Essential oil composition β-caryophyllene Caryophyllene oxide γ-curcumene β-eudesmol Ishwarane α-pinene β-pinene Undecane Résumé : The volatile constituents of five species of the medicinally and ornamentally valuable genus Hypericum L. (St. John's Wort; Clusiaceae), with native distributions in Africa and the Mediterranean regions of Europe and Asia, were examined as part of our continuing research on the phytochemistry of Hypericum. The dried and ground aerial material of flowering plants was subjected to microdistillation to isolate volatile compounds, which were subsequently analyzed by GC/MS. The major constituent(s) of H. balearicum were α-pinene (28.5%), β-pinene (20.4%), and β-eudesmol (11.2%); of H. delphicum were caryophyllene oxide (31.5%), β-caryophyllene (18.2%), and undecane (17.5%); of H. roeperanum was γ-curcumene (15.6%); of H. aegypticum ssp. aegypticum was ishwarane (14.4%); and of H. aegypticum ssp. marrocanum were caryophyllene oxide (29.2%) and β-caryophyllene (15.1%). This paper represents the first report, to our knowledge, of volatile constituents for these species. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2007.9699287#.UWu4A0qC5mM Comparative essential oil composition of the natural hybrid phlomis x vuralii dadandi (Lamiaceae) and its parents / Kemal Hüsnü Can Başer in The journal of essential oil research, Vol. 20 N°1 (Janvier/Fevrier 2008)
[article]
in The journal of essential oil research > Vol. 20 N°1 (Janvier/Fevrier 2008) . - pp. 57-62
Titre : Comparative essential oil composition of the natural hybrid phlomis x vuralii dadandi (Lamiaceae) and its parents Type de document : texte imprimé Auteurs : Kemal Hüsnü Can Başer, Auteur ; Betül Demirci, Auteur ; Mehmet Yaşar Dadandi, Auteur Année de publication : 2008 Article en page(s) : pp. 57-62 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Phlomis x vuralii Phlomis bourgaei Phlomis chimerae Lamiaceae Essential oil composition β-caryophyllene Germacrene D Caryophyllene oxide Résumé : The genus Phlomis L. is represented in the Flora of Turkey with 50 taxa having a high endemism and hybridization rate. Phlomis x vuralii Dadan di and its parents P. chimerae Boissieu. and P. bourgaei Boiss. were collected from Antalya, southern part of Turkey. The essential oils were obtained from the aerial parts by hydrodistillation and were subsequently analyzed both by GC and GC/MS. The main constituent of the hybrid P. x vuralii was identified as caryophyllene oxide (16.9%) and the diterpene 8,12-epoxylabd-14-en-13-ol (6.4%) among the 93 compounds of the oil. P. chimerae oil contained β-caryophyllene (34.7%) and germacrene D (15.7%) as major components. P. bourgaei oil was found to be rich in germacrene D (11.3%) and β-caryophyllene (11.2%). ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2008.9699422 [article] Comparative essential oil composition of the natural hybrid phlomis x vuralii dadandi (Lamiaceae) and its parents [texte imprimé] / Kemal Hüsnü Can Başer, Auteur ; Betül Demirci, Auteur ; Mehmet Yaşar Dadandi, Auteur . - 2008 . - pp. 57-62.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 20 N°1 (Janvier/Fevrier 2008) . - pp. 57-62
Mots-clés : Phlomis x vuralii Phlomis bourgaei Phlomis chimerae Lamiaceae Essential oil composition β-caryophyllene Germacrene D Caryophyllene oxide Résumé : The genus Phlomis L. is represented in the Flora of Turkey with 50 taxa having a high endemism and hybridization rate. Phlomis x vuralii Dadan di and its parents P. chimerae Boissieu. and P. bourgaei Boiss. were collected from Antalya, southern part of Turkey. The essential oils were obtained from the aerial parts by hydrodistillation and were subsequently analyzed both by GC and GC/MS. The main constituent of the hybrid P. x vuralii was identified as caryophyllene oxide (16.9%) and the diterpene 8,12-epoxylabd-14-en-13-ol (6.4%) among the 93 compounds of the oil. P. chimerae oil contained β-caryophyllene (34.7%) and germacrene D (15.7%) as major components. P. bourgaei oil was found to be rich in germacrene D (11.3%) and β-caryophyllene (11.2%). ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2008.9699422 Composition and antimicrobial activity of essential oil of ferulago longistylis boiss. fruits / Ayse Mine Gençler Özkan 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. 569-573
Titre : Composition and antimicrobial activity of essential oil of ferulago longistylis boiss. fruits Type de document : texte imprimé Auteurs : Ayse Mine Gençler Özkan, Auteur ; Betül Demirci, Auteur ; Fatih Demirci, Auteur Année de publication : 2009 Article en page(s) : pp. 569-573 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Ferulago longistylis Apiaceae Essential oil composition 2,3,6-trimethylbenzaldehyde α-pinene (Z)-β-ocimene Antimicrobial activity Résumé : The essential oil from the fruits of Ferulago longistylis Boiss. (Apiceae) was obtained by hydrodistillation. Simultaneous analyses by GC and GC/MS resulted in the identification of 59 compounds representing 96% of the essential oil. The major constituents found were 2,3,6-trimethylbenzaldehyde (29%), α-pinene (17%), (Z)-β-ocimene (16%), sabinene (6%), myrcene (6%) and bornyl acetate (4%). The oil was also screened for its antimicrobial properties against various Gram negative (Bacillus cereus, Enterobacter aerogenes, Escherichia coli, Proteus vulgaris, Pseudomonas aeruginosa, Salmonella typhimurium) and Gram positive (Staphylococcus epidermidis, S. aureus, methicilline resistant S. aureus) bacteria and the yeast Candida tropicalis. Using a broth microdilution assay, only moderate to weak inhibitory activity (0.5–1 mg/mL) was observed against the microorganisms screened in this assay when compared to the standard antimicrobial agents. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2008.9700090 [article] Composition and antimicrobial activity of essential oil of ferulago longistylis boiss. fruits [texte imprimé] / Ayse Mine Gençler Özkan, Auteur ; Betül Demirci, Auteur ; Fatih Demirci, Auteur . - 2009 . - pp. 569-573.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 20 n°6 (Novembre/Décembre 2008) . - pp. 569-573
Mots-clés : Ferulago longistylis Apiaceae Essential oil composition 2,3,6-trimethylbenzaldehyde α-pinene (Z)-β-ocimene Antimicrobial activity Résumé : The essential oil from the fruits of Ferulago longistylis Boiss. (Apiceae) was obtained by hydrodistillation. Simultaneous analyses by GC and GC/MS resulted in the identification of 59 compounds representing 96% of the essential oil. The major constituents found were 2,3,6-trimethylbenzaldehyde (29%), α-pinene (17%), (Z)-β-ocimene (16%), sabinene (6%), myrcene (6%) and bornyl acetate (4%). The oil was also screened for its antimicrobial properties against various Gram negative (Bacillus cereus, Enterobacter aerogenes, Escherichia coli, Proteus vulgaris, Pseudomonas aeruginosa, Salmonella typhimurium) and Gram positive (Staphylococcus epidermidis, S. aureus, methicilline resistant S. aureus) bacteria and the yeast Candida tropicalis. Using a broth microdilution assay, only moderate to weak inhibitory activity (0.5–1 mg/mL) was observed against the microorganisms screened in this assay when compared to the standard antimicrobial agents. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2008.9700090 Composition of essential oils of ten centaurea L. taxa from Turkey / Canan Karamenderes in The journal of essential oil research, Vol. 20 n°4 (Juillet/Août 2008)
[article]
in The journal of essential oil research > Vol. 20 n°4 (Juillet/Août 2008) . - pp. 342-349
Titre : Composition of essential oils of ten centaurea L. taxa from Turkey Type de document : texte imprimé Auteurs : Canan Karamenderes, Auteur ; Betül Demirci, Auteur ; K. Hüsnü Can Başer, Auteur Année de publication : 2008 Article en page(s) : pp. 342-349 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Centaurea hierapolitana Centaurea cadmea Centaurea calolepis Centaurea cariensis subsp. maculiceps Centaurea cariensis subsp. microlepis Centaurea ensiformis Centaurea reuterana. var. reuterana Centaurea cyanus Centaurea depressa Centaurea urvillei subsp. urvillei Asteraceae Essential oil composition Hexadecanoic acid Carvacrol 4-methyl-4-hepten-3-one Résumé : Essential oils obtained by microdistillation from seven endemic Centaurea species [C. hierapolitana Boiss., C. cadmea Boiss., C. calolepis Boiss., C. cariensis Boiss. subsp. maculiceps (O. Schwarz) Wagenitz, C. cariensis Boiss. subsp. microlepis (Boiss.) Wagenitz, C. ensiformis P.H. Davis and C. reuterana Boiss. var. reuterana] and three widespread (C. cyanus L., C. depressa Bieb. and C. urvillei DC. subsp. urvillei) Centaurea L. (Asteraceae) taxa from Turkey were analyzed by gas chromatography (GC) and gas chromatography-mass spectrometry (GC/MS) techniques. A total of 158 different compounds were identified. Significant and quantitative differences were observed among the species. Hexadecanoic acid (19.5–33.4%) was the main constituent of C. hierapolitana, C. cadmea, C. calolepis, C. reuterana var. reuterana, C. depressa and C. urvillei subsp. urvillei oils, while carvacrol (13.0–28.4%) was the major compound in, C. cariensis subsp. microlepis, C. cariensis subsp. maculiceps, C. ensiformis and C. cyanus oils. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2008.9700027 [article] Composition of essential oils of ten centaurea L. taxa from Turkey [texte imprimé] / Canan Karamenderes, Auteur ; Betül Demirci, Auteur ; K. Hüsnü Can Başer, Auteur . - 2008 . - pp. 342-349.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 20 n°4 (Juillet/Août 2008) . - pp. 342-349
Mots-clés : Centaurea hierapolitana Centaurea cadmea Centaurea calolepis Centaurea cariensis subsp. maculiceps Centaurea cariensis subsp. microlepis Centaurea ensiformis Centaurea reuterana. var. reuterana Centaurea cyanus Centaurea depressa Centaurea urvillei subsp. urvillei Asteraceae Essential oil composition Hexadecanoic acid Carvacrol 4-methyl-4-hepten-3-one Résumé : Essential oils obtained by microdistillation from seven endemic Centaurea species [C. hierapolitana Boiss., C. cadmea Boiss., C. calolepis Boiss., C. cariensis Boiss. subsp. maculiceps (O. Schwarz) Wagenitz, C. cariensis Boiss. subsp. microlepis (Boiss.) Wagenitz, C. ensiformis P.H. Davis and C. reuterana Boiss. var. reuterana] and three widespread (C. cyanus L., C. depressa Bieb. and C. urvillei DC. subsp. urvillei) Centaurea L. (Asteraceae) taxa from Turkey were analyzed by gas chromatography (GC) and gas chromatography-mass spectrometry (GC/MS) techniques. A total of 158 different compounds were identified. Significant and quantitative differences were observed among the species. Hexadecanoic acid (19.5–33.4%) was the main constituent of C. hierapolitana, C. cadmea, C. calolepis, C. reuterana var. reuterana, C. depressa and C. urvillei subsp. urvillei oils, while carvacrol (13.0–28.4%) was the major compound in, C. cariensis subsp. microlepis, C. cariensis subsp. maculiceps, C. ensiformis and C. cyanus oils. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2008.9700027 Composition of the essential oil of cymbopogon afronardus stapf from Uganda / K. Hüsnü Can Baser in The journal of essential oil research, Vol. 17 N° 2 (Mars-Avril 2005)
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