Antimicrobial activity of commercial samples of thyme and marjoram oils / Aušra Šipailienė in The journal of essential oil research, Vol. 18 N° 6 (Novembre-Décembre 2006)  

Public ISBD [article]  inThe journal of essential oil research > Vol. 18 N° 6 (Novembre-Décembre 2006) . - pp. 698-703 Titre : Antimicrobial activity of commercial samples of thyme and marjoram oils Type de document : texte imprimé Auteurs : Aušra Šipailienė, Auteur ; Petras R. Venskutonis, Auteur Année de publication : 2006 Article en page(s) : pp. 698-703 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Thymus vulgaris Origanum majorana Labiatae Essential oil composition p-cymene Thymol Linalool Linalyl acetate α  -terpineol Antimicrobial activity Résumé : Commercial samples of thyme and marjoram oils were analyzed by capillary GC and coupled GC/MS. The antimicrobial activity of each oil was assessed against 10 different bacteria and eight strains of yeasts. p-Cymene (25.2%), thymol (31.4%) and carvacrol (3.8%) were important compounds in the oil of thyme, while limonene (17.3%), linalool (15.5%), terpinen-4-ol (7.3%), α-terpineol (13.0%) and linalyl acetate (14.1%) were major constituents in marjoram oil. Thyme oil possessed remarkable antimicrobial activity against the tested microorganisms, while marjoram oil demonstrated a lower antimicrobial activity. The antimicrobial activity of oils was higher against yeasts than bacteria. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2006.9699210#.UXVMakqC5mN [article] Antimicrobial activity of commercial samples of thyme and marjoram oils [texte imprimé] / Aušra Šipailienė, Auteur ; Petras R. Venskutonis, Auteur . - 2006 . - pp. 698-703. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 18 N° 6 (Novembre-Décembre 2006) . - pp. 698-703 Mots-clés : Thymus vulgaris Origanum majorana Labiatae Essential oil composition p-cymene Thymol Linalool Linalyl acetate α  -terpineol Antimicrobial activity Résumé : Commercial samples of thyme and marjoram oils were analyzed by capillary GC and coupled GC/MS. The antimicrobial activity of each oil was assessed against 10 different bacteria and eight strains of yeasts. p-Cymene (25.2%), thymol (31.4%) and carvacrol (3.8%) were important compounds in the oil of thyme, while limonene (17.3%), linalool (15.5%), terpinen-4-ol (7.3%), α-terpineol (13.0%) and linalyl acetate (14.1%) were major constituents in marjoram oil. Thyme oil possessed remarkable antimicrobial activity against the tested microorganisms, while marjoram oil demonstrated a lower antimicrobial activity. The antimicrobial activity of oils was higher against yeasts than bacteria. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2006.9699210#.UXVMakqC5mN

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Chemical composition of the essential oil of thymus serpyllum L. ssp. serpyllum growing wild in Lithuania / Kristina Ložionė in The journal of essential oil research, Vol. 18 N° 2 (Mars-Avril 2006)  

Public ISBD [article]  inThe journal of essential oil research > Vol. 18 N° 2 (Mars-Avril 2006) . - pp. 206-211 Titre : Chemical composition of the essential oil of thymus serpyllum L. ssp. serpyllum growing wild in Lithuania Type de document : texte imprimé Auteurs : Kristina Ložionė, Auteur ; Petras R. Venskutonis, Auteur Année de publication : 2006 Article en page(s) : pp. 206-211 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Thymus serpyllum ssp. Lamiaceae Essential oil composition l-octen-3-ol Myrcene 1,8-cineole (Z)-β  - ocimene (E)-β  -ocimene Cis-p-menth-2-en-1-ol Camphor Borneol α  -terpineol Cis-dihydrocarvone β  -caryophyllene Germacrene D B d-cadinene b-bisabolene Caryophyllene oxide a-cadinol Chemotypes Résumé : Twenty-six samples of Thymus serpyllum ssp. serpyllum were collected from 14 habitats in Lithuania and the composition of their essential oils were analyzed by capillary gas chromatography (GC) and GC/MS. The study revealed remarkable infraspecific variation in the oil composition. Five main groups of the plants were observed using hierarchical cluster analysis based on the major essential oil constituents. Consequently, five chemotypes of T. serpyllum have been defined, namely 1,8-cineole, germacrene B, (E)-β-ocimene, α-cadinol and cis-p-menth-2-en-1-ol. It was concluded that there is no clear relation in the oil composition between the studied varieties and chemotypes. Two chemotypes were defined within the ssp. serpyllum var. serpyllum, two chemotypes within the ssp. serpyllum var. lineatus, and one chemotype within ssp. serpyllum var. rigidus. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2006.9699067#.Ua3RcNgYrOk [article] Chemical composition of the essential oil of thymus serpyllum L. ssp. serpyllum growing wild in Lithuania [texte imprimé] / Kristina Ložionė, Auteur ; Petras R. Venskutonis, Auteur . - 2006 . - pp. 206-211. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 18 N° 2 (Mars-Avril 2006) . - pp. 206-211 Mots-clés : Thymus serpyllum ssp. Lamiaceae Essential oil composition l-octen-3-ol Myrcene 1,8-cineole (Z)-β  - ocimene (E)-β  -ocimene Cis-p-menth-2-en-1-ol Camphor Borneol α  -terpineol Cis-dihydrocarvone β  -caryophyllene Germacrene D B d-cadinene b-bisabolene Caryophyllene oxide a-cadinol Chemotypes Résumé : Twenty-six samples of Thymus serpyllum ssp. serpyllum were collected from 14 habitats in Lithuania and the composition of their essential oils were analyzed by capillary gas chromatography (GC) and GC/MS. The study revealed remarkable infraspecific variation in the oil composition. Five main groups of the plants were observed using hierarchical cluster analysis based on the major essential oil constituents. Consequently, five chemotypes of T. serpyllum have been defined, namely 1,8-cineole, germacrene B, (E)-β-ocimene, α-cadinol and cis-p-menth-2-en-1-ol. It was concluded that there is no clear relation in the oil composition between the studied varieties and chemotypes. Two chemotypes were defined within the ssp. serpyllum var. serpyllum, two chemotypes within the ssp. serpyllum var. lineatus, and one chemotype within ssp. serpyllum var. rigidus. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2006.9699067#.Ua3RcNgYrOk

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