New sulfur components of pink guava fruit (Psidium guajava L.) / Robin A. Clery in The journal of essential oil research, Vol. 20 n°4 (Juillet/Août 2008)  

Public ISBD [article]  inThe journal of essential oil research > Vol. 20 n°4 (Juillet/Août 2008) . - pp. 315-317 Titre : New sulfur components of pink guava fruit (Psidium guajava L.) Type de document : texte imprimé Auteurs : Robin A. Clery, Auteur ; Christopher J. Hammond, Auteur Année de publication : 2008 Article en page(s) : pp. 315-317 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Psidium guajava Guava Sulfur constituents 3-mercaptohexanol 3-mercaptohexyl acetate Résumé : A study of the key sulfur odor components of guava was undertaken by headspace and solvent extraction techniques. GC and GC/MS analysis identified five sulfur components; dimethyl disulfide, dimethyl trisulfide, benzothiazole, 3-mercaptohexanol and 3-mercaptohexyl acetate. Two of these compounds have not previously been reported as occurring in guava (3-mercapto- hexanol and 3-mercaptohexyl acetate). These compounds have a cassis-like odor and are thought to make an important contribution to the odor of guava. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2008.9700021 [article] New sulfur components of pink guava fruit (Psidium guajava L.) [texte imprimé] / Robin A. Clery, Auteur ; Christopher J. Hammond, Auteur . - 2008 . - pp. 315-317. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 20 n°4 (Juillet/Août 2008) . - pp. 315-317 Mots-clés : Psidium guajava Guava Sulfur constituents 3-mercaptohexanol 3-mercaptohexyl acetate Résumé : A study of the key sulfur odor components of guava was undertaken by headspace and solvent extraction techniques. GC and GC/MS analysis identified five sulfur components; dimethyl disulfide, dimethyl trisulfide, benzothiazole, 3-mercaptohexanol and 3-mercaptohexyl acetate. Two of these compounds have not previously been reported as occurring in guava (3-mercapto- hexanol and 3-mercaptohexyl acetate). These compounds have a cassis-like odor and are thought to make an important contribution to the odor of guava. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2008.9700021

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Nitrogen compounds from haitian vetiver oil / Robin A. Clery in The journal of essential oil research, Vol. 17 N° 6 (Novembre-Décembre 2005)  

Public ISBD [article]  inThe journal of essential oil research > Vol. 17 N° 6 (Novembre-Décembre 2005) . - pp. 591-592 Titre : Nitrogen compounds from haitian vetiver oil Type de document : texte imprimé Auteurs : Robin A. Clery, Auteur ; Christopher J. Hammond, Auteur ; Anthony C. Wright, Auteur Année de publication : 2006 Article en page(s) : pp. 591-592 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Vetiveria zizanioides Vetiver Essential oil composition Pyrazines Pyridines Résumé : Nitrogen containing compounds of vetiver oil, Vetiveria zizanioides (L.) Nash, have been investigated and 33 components identified by capillary GC and GC/MS. These include substituted pyridines, pyrazines and indolines; only four of which have previously been reported as occurring in vetiver oil. Two compounds, tentatively identified, are believed to be previously unreported as natural, namely, isomers of trimethylindoline and isocyanato-methylbenzene. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9699005#.UbXE0jeK1mM [article] Nitrogen compounds from haitian vetiver oil [texte imprimé] / Robin A. Clery, Auteur ; Christopher J. Hammond, Auteur ; Anthony C. Wright, Auteur . - 2006 . - pp. 591-592. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 17 N° 6 (Novembre-Décembre 2005) . - pp. 591-592 Mots-clés : Vetiveria zizanioides Vetiver Essential oil composition Pyrazines Pyridines Résumé : Nitrogen containing compounds of vetiver oil, Vetiveria zizanioides (L.) Nash, have been investigated and 33 components identified by capillary GC and GC/MS. These include substituted pyridines, pyrazines and indolines; only four of which have previously been reported as occurring in vetiver oil. Two compounds, tentatively identified, are believed to be previously unreported as natural, namely, isomers of trimethylindoline and isocyanato-methylbenzene. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9699005#.UbXE0jeK1mM

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Nitrogen-containing compounds in black pepper oil (Piper nigrum L.) / Robin A. Clery in The journal of essential oil research, Vol. 18 N° 1 (Janvier-Fevrier 2006)  

Public ISBD [article]  inThe journal of essential oil research > Vol. 18 N° 1 (Janvier-Fevrier 2006) . - pp. 1-3 Titre : Nitrogen-containing compounds in black pepper oil (Piper nigrum L.) Type de document : texte imprimé Auteurs : Robin A. Clery, Auteur ; Christopher J. Hammond, Auteur ; Anthony C. Wright, Auteur Année de publication : 2006 Article en page(s) : pp. 1-3 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Piper nigrum Piperaceae Black pepper oil Essential composition Nitrogen compounds 2-ethyl-3,5-dimethylpyrazine 3-ethyl-2,5-dimethylpyrazine Résumé : An investigation of nitrogen-containing compounds in black pepper oil, by capillary GC, GC/MS and HPLC techniques, revealed 20 previously unreported pyrazines, pyridines and piperidines. These species were found to be present at levels ranging from 150 ppb to 30 ppm. Odor assessment revealed that 2-ethyl-3,5-dimethylpyrazine (1.5 ppm) and 3-ethyl-2,5-dimethylpyrazine (490 ppb) contributed most significantly to the overall odor. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2006.9699369#.Ua3dedgYrOk [article] Nitrogen-containing compounds in black pepper oil (Piper nigrum L.) [texte imprimé] / Robin A. Clery, Auteur ; Christopher J. Hammond, Auteur ; Anthony C. Wright, Auteur . - 2006 . - pp. 1-3. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 18 N° 1 (Janvier-Fevrier 2006) . - pp. 1-3 Mots-clés : Piper nigrum Piperaceae Black pepper oil Essential composition Nitrogen compounds 2-ethyl-3,5-dimethylpyrazine 3-ethyl-2,5-dimethylpyrazine Résumé : An investigation of nitrogen-containing compounds in black pepper oil, by capillary GC, GC/MS and HPLC techniques, revealed 20 previously unreported pyrazines, pyridines and piperidines. These species were found to be present at levels ranging from 150 ppb to 30 ppm. Odor assessment revealed that 2-ethyl-3,5-dimethylpyrazine (1.5 ppm) and 3-ethyl-2,5-dimethylpyrazine (490 ppb) contributed most significantly to the overall odor. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2006.9699369#.Ua3dedgYrOk

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