Documents disponibles écrits par cet auteur

Analysis of cymenes in essential oils / Guy Collin in The journal of essential oil research, Vol. 22 N° 4 (Juillet/Août 2010) 

Public ISBD [article]  in The journal of essential oil research > Vol. 22 N° 4 (Juillet/Août 2010) . - pp. 310-313 Titre : Analysis of cymenes in essential oils : The case of lepechinia meyeni (Walp.) Epling. Type de document : texte imprimé Auteurs : Guy Collin, Auteur ; François-Xavier Garneau, Auteur ; Hélène Gagnon, Auteur Année de publication : 2011 Article en page(s) : pp. 310-313 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Lepechinia  meyeni  Lamiaceae  Essential  oil  composition  o-cymene  m-cymene  p-cymene  3,7,7-trimethyl-1,3,5-cycloheptatriene Index. décimale : 646 Résumé : The similarity of the mass spectra of the o-, m- and p-cymenes together with the small differences of their retention indices make it difficult to unambiguously identify the three cymene isomers. Moreover, there are discrepancies in the various data banks used as a reference in the analysis of essential oils. The authors have taken advantage of the presence of these three compounds in the oil of Lepechinia meyeni to identify the right order of elution of these compounds on both non-polar and polar columns. The order of elution on both DB-5 and S-wax 10 capillary columns is: m-, followed closely by p- and finally at some distance, o-cymene. A fourth compound having a similar mass spectrum was observed. From the literature, it was tentatively identified as 3,7,7-trimethyl-1,3,5-cycloheptatriene. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2010.9700333 [article] Analysis of cymenes in essential oils : The case of lepechinia meyeni (Walp.) Epling. [texte imprimé] / Guy Collin, Auteur ; François-Xavier Garneau, Auteur ; Hélène Gagnon, Auteur . - 2011 . - pp. 310-313. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 22 N° 4 (Juillet/Août 2010) . - pp. 310-313 Mots-clés : Lepechinia  meyeni  Lamiaceae  Essential  oil  composition  o-cymene  m-cymene  p-cymene  3,7,7-trimethyl-1,3,5-cycloheptatriene Index. décimale : 646 Résumé : The similarity of the mass spectra of the o-, m- and p-cymenes together with the small differences of their retention indices make it difficult to unambiguously identify the three cymene isomers. Moreover, there are discrepancies in the various data banks used as a reference in the analysis of essential oils. The authors have taken advantage of the presence of these three compounds in the oil of Lepechinia meyeni to identify the right order of elution of these compounds on both non-polar and polar columns. The order of elution on both DB-5 and S-wax 10 capillary columns is: m-, followed closely by p- and finally at some distance, o-cymene. A fourth compound having a similar mass spectrum was observed. From the literature, it was tentatively identified as 3,7,7-trimethyl-1,3,5-cycloheptatriene. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2010.9700333

Aromas from Quebec. I. composition of the essential oil of the rhizomes of acorus calamus L. / François-Xavier Garneau 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. 250-254 Titre : Aromas from Quebec. I. composition of the essential oil of the rhizomes of acorus calamus L. Type de document : texte imprimé Auteurs : François-Xavier Garneau, Auteur ; Guy Collin, Auteur ; Hélène Gagnon, Auteur Année de publication : 2008 Article en page(s) : pp. 250-254 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Acorus  calamus  Araceae  Essential  oil  composition  Preisocalamenediol  Acorenone  Shyobunone  Epi-acorone  Stereochemistry  Cryptoacorone Résumé : The chemical composition of the essential oil obtained from the rhizomes of Acorus calamus (sweet flag) collected in the Grondines region, Province of Quebec, was determined by GC/FID and GC/MS analyses. Several components were isolated by liquid chromatography and were identified by various NMR experiments such as: 1H-NMR, 13C-NMR, HSQC, HMBC, and NOESY. The major compounds were identified as preisocalamenediol, acorenone, shyobunone, and cryptoacorone. The complete stereochemical structure of cryptoacorone was elucidated. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2008.9700004 [article] Aromas from Quebec. I. composition of the essential oil of the rhizomes of acorus calamus L. [texte imprimé] / François-Xavier Garneau, Auteur ; Guy Collin, Auteur ; Hélène Gagnon, Auteur . - 2008 . - pp. 250-254. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 20 n°3 (Mai/Juin 2008) . - pp. 250-254 Mots-clés : Acorus  calamus  Araceae  Essential  oil  composition  Preisocalamenediol  Acorenone  Shyobunone  Epi-acorone  Stereochemistry  Cryptoacorone Résumé : The chemical composition of the essential oil obtained from the rhizomes of Acorus calamus (sweet flag) collected in the Grondines region, Province of Quebec, was determined by GC/FID and GC/MS analyses. Several components were isolated by liquid chromatography and were identified by various NMR experiments such as: 1H-NMR, 13C-NMR, HSQC, HMBC, and NOESY. The major compounds were identified as preisocalamenediol, acorenone, shyobunone, and cryptoacorone. The complete stereochemical structure of cryptoacorone was elucidated. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2008.9700004

Essential oils from bolivia. VII. myrtaceae / Javier Bernardo Lopez Arze in The journal of essential oil research, Vol. 17 N° 1 (Janvier-Fevrier 2005) 

Public ISBD [article]  in The journal of essential oil research > Vol. 17 N° 1 (Janvier-Fevrier 2005) . - pp. 64-65 Titre : Essential oils from bolivia. VII. myrtaceae : Myrcianthes osteomeloides (Rusby) mcvaugh and myrcianthes pseudomato (Legrand) mcvaugh Type de document : texte imprimé Auteurs : Javier Bernardo Lopez Arze, Auteur ; France-Ida Jean, Auteur ; Hélène Gagnon, Auteur Année de publication : 2006 Article en page(s) : pp. 64-65 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Myrcianthes  osteomeloides  Myrcianthes  pseudomato  Myrtaceae  Essential  oil  composition  1,8-cineole  α-pinene  Linalool Résumé : The chemical composition of the essential oils of Myrcianthes osteomeloides and M. pseudomato was studied by GC and GC/MS. Myrcianthes osteomeloides oil contained 1,8-cineole (55.7%) as the major component followed by α-pinene (17.9%), α-terpineol (8.5%) and β-pinene (4.6%). We identified 1,8-cineole (24.4%), α-pinene (17.1%), linalool (11.7%), limonene (8.5%) and γ-terpinene (7.3%) as main constituents in M. pseudomato oil. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9698832 [article] Essential oils from bolivia. VII. myrtaceae : Myrcianthes osteomeloides (Rusby) mcvaugh and myrcianthes pseudomato (Legrand) mcvaugh [texte imprimé] / Javier Bernardo Lopez Arze, Auteur ; France-Ida Jean, Auteur ; Hélène Gagnon, Auteur . - 2006 . - pp. 64-65. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 17 N° 1 (Janvier-Fevrier 2005) . - pp. 64-65 Mots-clés : Myrcianthes  osteomeloides  Myrcianthes  pseudomato  Myrtaceae  Essential  oil  composition  1,8-cineole  α-pinene  Linalool Résumé : The chemical composition of the essential oils of Myrcianthes osteomeloides and M. pseudomato was studied by GC and GC/MS. Myrcianthes osteomeloides oil contained 1,8-cineole (55.7%) as the major component followed by α-pinene (17.9%), α-terpineol (8.5%) and β-pinene (4.6%). We identified 1,8-cineole (24.4%), α-pinene (17.1%), linalool (11.7%), limonene (8.5%) and γ-terpinene (7.3%) as main constituents in M. pseudomato oil. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9698832