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Chemotypes of interspecific hybrid of thymus × oblongifolius opiz growing wild in lithuania and effects of cloning on essential oil composition / K. Ložienė in The journal of essential oil research, Vol. 22 N° 6 (Novembre/Décembre 2010) 

Public ISBD [article]  in The journal of essential oil research > Vol. 22 N° 6 (Novembre/Décembre 2010) . - pp. 581-588 Titre : Chemotypes of interspecific hybrid of thymus × oblongifolius opiz growing wild in lithuania and effects of cloning on essential oil composition Type de document : texte imprimé Auteurs : K. Ložienė, Auteur ; P. R. Venskutonis, Auteur Année de publication : 2011 Article en page(s) : pp. 581-588 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Thymus  ×  oblongifolius  Lamiaceae  Interspecific  hybrid  Chemical  polymorphism  Essential  oil  composition  1-octen-3-ol  (Z)-β-ocimene  Myrcene  Geraniol  1,8-cineole  α-terpinyl  acetate  Germacrene  B Index. décimale : 646 Résumé : Seventeen samples of the interspecific hybrid of thyme, Thymus × oblongifolius Opiz, were collected from thirteen different habitats in Lithuania. The composition of their essential oils was analyzed by capillary gas chromatography (GC) and mass spectrometry (MS). Eight chemotypes were defined, namely 1-octen-3-ol, (Z)-β-ocimene, geraniol, myrcene, 1,8-cineole, α-terpinyl acetate, germacrene B and geraniol/germacreneB. The composition of the hybrid oil can be characterized as intermediate comparing to its parental species, T. serpyllum L. and T. pulegioides L., according to the percentages of thymol, carvacrol, 1,8-cineole, germacrene B, geraniol and (Z)-β-ocimene. Three samples of the investigated T. × oblongifolius were moved from natural habitats into the experimental field collection and cloned annually in the ground under the same environmental conditions. Oil composition of these three samples was monitored in the fourth clonal offspring generation and compared with the oil composition of their parent plants from natural habitats. The results obtained by cloning showed that the composition of essential oil of the interspecific hybrid T. × oblongifolius is quite stable, most likely predetermined genetically. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2010.9700405 [article] Chemotypes of interspecific hybrid of thymus × oblongifolius opiz growing wild in lithuania and effects of cloning on essential oil composition [texte imprimé] / K. Ložienė, Auteur ; P. R. Venskutonis, Auteur . - 2011 . - pp. 581-588. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 22 N° 6 (Novembre/Décembre 2010) . - pp. 581-588 Mots-clés : Thymus  ×  oblongifolius  Lamiaceae  Interspecific  hybrid  Chemical  polymorphism  Essential  oil  composition  1-octen-3-ol  (Z)-β-ocimene  Myrcene  Geraniol  1,8-cineole  α-terpinyl  acetate  Germacrene  B Index. décimale : 646 Résumé : Seventeen samples of the interspecific hybrid of thyme, Thymus × oblongifolius Opiz, were collected from thirteen different habitats in Lithuania. The composition of their essential oils was analyzed by capillary gas chromatography (GC) and mass spectrometry (MS). Eight chemotypes were defined, namely 1-octen-3-ol, (Z)-β-ocimene, geraniol, myrcene, 1,8-cineole, α-terpinyl acetate, germacrene B and geraniol/germacreneB. The composition of the hybrid oil can be characterized as intermediate comparing to its parental species, T. serpyllum L. and T. pulegioides L., according to the percentages of thymol, carvacrol, 1,8-cineole, germacrene B, geraniol and (Z)-β-ocimene. Three samples of the investigated T. × oblongifolius were moved from natural habitats into the experimental field collection and cloned annually in the ground under the same environmental conditions. Oil composition of these three samples was monitored in the fourth clonal offspring generation and compared with the oil composition of their parent plants from natural habitats. The results obtained by cloning showed that the composition of essential oil of the interspecific hybrid T. × oblongifolius is quite stable, most likely predetermined genetically. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2010.9700405

Chromatographic evaluation of the composition of essential oil and α-pinene enantiomers in juniperus communis L. berries during ripening / K. Loziene 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. 453-458 Titre : Chromatographic evaluation of the composition of essential oil and α-pinene enantiomers in juniperus communis L. berries during ripening Type de document : texte imprimé Auteurs : K. Loziene, Auteur ; J. Labokas, Auteur ; P. R. Venskutonis, Auteur Année de publication : 2011 Article en page(s) : pp. 453-458 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Juniperus  communis  Cupressaceae  Essential  oil  composition  α-pinene  Myrcene  β-caryophyllene  Caryophyllene  oxide  Chiral  gas  chromatography  α-pinene  enantiomers Index. décimale : 646 Résumé : Chromatographic assessment of the composition of the essential oils of Juniperus communis was carried out to measure enatiomeric distribution of α-pinene in the two plant morphotypes and to determine if harvesting time possesses the effect on the content of individual components in the oil. The major compound in the studied juniper berries was α-pinene (26.8–42.7%). There were no significant differences in the α-pinene content between the two analyzed morphotypes. The second quantitative component in the analyzed oils of unripe and ripe berries was myrcene, whose amounts differed in the studied morphotypes. Consequently, myrcene may be used as one of the indicators discriminating two different juniper chemotypes. The results obtained clearly indicate that the plants belong to two different chemotypes, producing very stable proportions of (1R)-(+) and (1S)-(–)-α-pinene enatiomers at all harvesting periods. The ratio of (1R)-(+) and (1S)-(–) enantiomers was 6.4–8.0 in the oils from morphotype with light-green berries and 2.0–2.2 in the oils from morphotype with bluish-green berries. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2010.9700370 [article] Chromatographic evaluation of the composition of essential oil and α-pinene enantiomers in juniperus communis L. berries during ripening [texte imprimé] / K. Loziene, Auteur ; J. Labokas, Auteur ; P. R. Venskutonis, Auteur . - 2011 . - pp. 453-458. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 22 N° 5 (Septembre/Octobre 2010) . - pp. 453-458 Mots-clés : Juniperus  communis  Cupressaceae  Essential  oil  composition  α-pinene  Myrcene  β-caryophyllene  Caryophyllene  oxide  Chiral  gas  chromatography  α-pinene  enantiomers Index. décimale : 646 Résumé : Chromatographic assessment of the composition of the essential oils of Juniperus communis was carried out to measure enatiomeric distribution of α-pinene in the two plant morphotypes and to determine if harvesting time possesses the effect on the content of individual components in the oil. The major compound in the studied juniper berries was α-pinene (26.8–42.7%). There were no significant differences in the α-pinene content between the two analyzed morphotypes. The second quantitative component in the analyzed oils of unripe and ripe berries was myrcene, whose amounts differed in the studied morphotypes. Consequently, myrcene may be used as one of the indicators discriminating two different juniper chemotypes. The results obtained clearly indicate that the plants belong to two different chemotypes, producing very stable proportions of (1R)-(+) and (1S)-(–)-α-pinene enatiomers at all harvesting periods. The ratio of (1R)-(+) and (1S)-(–) enantiomers was 6.4–8.0 in the oils from morphotype with light-green berries and 2.0–2.2 in the oils from morphotype with bluish-green berries. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2010.9700370