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Temperature influences thymol and carvacrol differentially in origanum spp. (Lamiaceae) / J. Novak in The journal of essential oil research, Vol. 22 N° 5 (Septembre/Octobre 2010) 

Public ISBD [article]  in The journal of essential oil research > Vol. 22 N° 5 (Septembre/Octobre 2010) . - pp. 412-415 Titre : Temperature influences thymol and carvacrol differentially in origanum spp. (Lamiaceae) Type de document : texte imprimé Auteurs : J. Novak, Auteur ; B. Lukas, Auteur ; C. Franz, Auteur Année de publication : 2011 Article en page(s) : pp. 412-415 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Origanum  vulgare  x  Origanum  majorana  Origanum  syriacum  ssp.  Syriacum  Lamiaceae  Temperature  Essential  oil  compounds  Carvacrol  Thymol  Cis-sabinene  hydrate Index. décimale : 646 Résumé : The composition of secondary metabolites is often modified by environment and ontogenesis. To explicitly study the Influence of temperature on essential oil compositions, experiments on a hybrid of Origanum vulgare x Origanum majorana (containing both major monoterpene pathways of the genus Origanum, ‘sabinyl’ and ‘cymyl’-pathway) and on Origanum syriacum ssp. syriacum (only ‘cymyl’-pathway) were conducted in growth chambers. Clonally propagated plants were grown at three different temperature levels and the solvent extracts analyzed by GC/MS for their composition of essential oil compounds. The major ‘sabinyl’ compound cis-sabinene hydrate was not influenced by temperature, while temperature significantly influenced thymol and carvacrol and other essential oil compounds. Although thymol and carvacrol are closely related monoterpene phenols, they reacted to varying levels of temperature in an opposite way. Thymol increased with decreasing temperatures while carvacrol increased with increasing temperatures. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2010.9700359 [article] Temperature influences thymol and carvacrol differentially in origanum spp. (Lamiaceae) [texte imprimé] / J. Novak, Auteur ; B. Lukas, Auteur ; C. Franz, Auteur . - 2011 . - pp. 412-415. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 22 N° 5 (Septembre/Octobre 2010) . - pp. 412-415 Mots-clés : Origanum  vulgare  x  Origanum  majorana  Origanum  syriacum  ssp.  Syriacum  Lamiaceae  Temperature  Essential  oil  compounds  Carvacrol  Thymol  Cis-sabinene  hydrate Index. décimale : 646 Résumé : The composition of secondary metabolites is often modified by environment and ontogenesis. To explicitly study the Influence of temperature on essential oil compositions, experiments on a hybrid of Origanum vulgare x Origanum majorana (containing both major monoterpene pathways of the genus Origanum, ‘sabinyl’ and ‘cymyl’-pathway) and on Origanum syriacum ssp. syriacum (only ‘cymyl’-pathway) were conducted in growth chambers. Clonally propagated plants were grown at three different temperature levels and the solvent extracts analyzed by GC/MS for their composition of essential oil compounds. The major ‘sabinyl’ compound cis-sabinene hydrate was not influenced by temperature, while temperature significantly influenced thymol and carvacrol and other essential oil compounds. Although thymol and carvacrol are closely related monoterpene phenols, they reacted to varying levels of temperature in an opposite way. Thymol increased with decreasing temperatures while carvacrol increased with increasing temperatures. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2010.9700359