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Composition and variability of the essential oil in thymus zygis from southern Spain / Rafael Pérez-Sánchez 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. 192-200 Titre : Composition and variability of the essential oil in thymus zygis from southern Spain Type de document : texte imprimé Auteurs : Rafael Pérez-Sánchez, Auteur ; José L. Ubera, Auteur ; Fernando Lafont, Auteur Année de publication : 2008 Article en page(s) : pp. 192-200 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Thymus  zygis  Labiatae  Spanish  thyme  Essential  oil  composition  p-cymene  1,8-cineole  γ-terpinene  α-terpineol  Linalool  Camphor  Borneol  Thymol  Carvacrol  β-caryophyllene  Caryophyllene  oxide  Chemotypes  Principal  component  analysis Résumé : An investigation by GC/MS into the composition and variability of the essential oils contained in 63 individual plants taken from 21 populations of Thymus zygis L. in Southern Spain was carried out. Chemometric investigation of the infraspecific variability of the essential oils of these populations led to the differentiation of seven main chemotypes: thymol, carvacrol, linalool, α-terpinyl acetate, thymol/p-cymene/γ-terpinene, 1,8-cineole/myrcene/spathulenol and 1,8-cineole/α-terpineol. The phenolic compound thymol was the most common constituent in the majority of the samples studied. The concentration of its precursors, p-cymene and γ-terpinene was also noteworthy. There was no chemotaxonomic differentiation between the two subspecies (gracilis and sylvestris) for the Thymus zygis plants studied. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2008.9699989 [article] Composition and variability of the essential oil in thymus zygis from southern Spain [texte imprimé] / Rafael Pérez-Sánchez, Auteur ; José L. Ubera, Auteur ; Fernando Lafont, Auteur . - 2008 . - pp. 192-200. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 20 n°3 (Mai/Juin 2008) . - pp. 192-200 Mots-clés : Thymus  zygis  Labiatae  Spanish  thyme  Essential  oil  composition  p-cymene  1,8-cineole  γ-terpinene  α-terpineol  Linalool  Camphor  Borneol  Thymol  Carvacrol  β-caryophyllene  Caryophyllene  oxide  Chemotypes  Principal  component  analysis Résumé : An investigation by GC/MS into the composition and variability of the essential oils contained in 63 individual plants taken from 21 populations of Thymus zygis L. in Southern Spain was carried out. Chemometric investigation of the infraspecific variability of the essential oils of these populations led to the differentiation of seven main chemotypes: thymol, carvacrol, linalool, α-terpinyl acetate, thymol/p-cymene/γ-terpinene, 1,8-cineole/myrcene/spathulenol and 1,8-cineole/α-terpineol. The phenolic compound thymol was the most common constituent in the majority of the samples studied. The concentration of its precursors, p-cymene and γ-terpinene was also noteworthy. There was no chemotaxonomic differentiation between the two subspecies (gracilis and sylvestris) for the Thymus zygis plants studied. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2008.9699989