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GC analysis of rosemary aroma isolated traditionally by distillation and by SPME / Renata Zawirska-Wojtasiak in The journal of essential oil research, Vol. 21 N°1 (Janvier/Février 2009) 

Public ISBD [article]  in The journal of essential oil research > Vol. 21 N°1 (Janvier/Février 2009) . - pp.8-15 Titre : GC analysis of rosemary aroma isolated traditionally by distillation and by SPME Type de document : texte imprimé Auteurs : Renata Zawirska-Wojtasiak, Auteur ; Erwin Wasowicz, Auteur Article en page(s) : pp.8-15 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Rosmarinus  officinalis  Lamiaceae  Essential  oil  composition  α-pinene  1,8-cineole  Camphor  Headspace  volatiles  Enantiomeric  distribution  Rosemary  authenticity Index. décimale : 646 Résumé : The rosemary aroma composition and the enanatiomeric ratio of chiral compounds were examined by GC(FID), GC/MS and chiral GC. Solid-phase microextraction (SPME) was examined for its suitability for isolation ofvolatiles from the leaves of five samples of rosemary in comparison with the traditional steam distillation procedure. Mostly five rosemary aroma components were taken into consideration: 1,8-cineole, camphor, borneol, α-terpineol and verbenone. Eight pairs of enantiomers were separated in all of the analyzed samples: α-pinene, camphene, β-pinene, limonene, linalool, camphor, borneol and α-terpineol. But only one compound – borneol was detected in all the samples, with the same enantiomeric ratio and high optical purity of the minus form, over 85% of total. SPME may be used as a fast and precise tool for measuring the enantiomeric ratio of this compound when authenticity of rosemary aroma is controlled. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.jeoronline.com/archive/detail/42#top [article] GC analysis of rosemary aroma isolated traditionally by distillation and by SPME [texte imprimé] / Renata Zawirska-Wojtasiak, Auteur ; Erwin Wasowicz, Auteur . - pp.8-15. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 21 N°1 (Janvier/Février 2009) . - pp.8-15 Mots-clés : Rosmarinus  officinalis  Lamiaceae  Essential  oil  composition  α-pinene  1,8-cineole  Camphor  Headspace  volatiles  Enantiomeric  distribution  Rosemary  authenticity Index. décimale : 646 Résumé : The rosemary aroma composition and the enanatiomeric ratio of chiral compounds were examined by GC(FID), GC/MS and chiral GC. Solid-phase microextraction (SPME) was examined for its suitability for isolation ofvolatiles from the leaves of five samples of rosemary in comparison with the traditional steam distillation procedure. Mostly five rosemary aroma components were taken into consideration: 1,8-cineole, camphor, borneol, α-terpineol and verbenone. Eight pairs of enantiomers were separated in all of the analyzed samples: α-pinene, camphene, β-pinene, limonene, linalool, camphor, borneol and α-terpineol. But only one compound – borneol was detected in all the samples, with the same enantiomeric ratio and high optical purity of the minus form, over 85% of total. SPME may be used as a fast and precise tool for measuring the enantiomeric ratio of this compound when authenticity of rosemary aroma is controlled. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.jeoronline.com/archive/detail/42#top