Essential oil analysis of micromeria nubigena H.B.K. and its antimicrobial activity / Hesham R. El-Seedi in The journal of essential oil research, Vol. 20 N°5 (Septembre/Octobre 2008)  

Public ISBD [article]  inThe journal of essential oil research > Vol. 20 N°5 (Septembre/Octobre 2008) . - pp. 452-456 Titre : Essential oil analysis of micromeria nubigena H.B.K. and its antimicrobial activity Type de document : texte imprimé Auteurs : Hesham R. El-Seedi, Auteur ; Awatef Khattab, Auteur ; Ahmed H.M. Gaara, Auteur Année de publication : 2008 Article en page(s) : pp. 452-456 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Micromeria nubigena Lamiaceae Essential oil composition Thymol Carvacrol Pulegone Bound volatiles Anti-microbial activity Résumé : Water-distilled essential oil from leaves and flowers of Micromeria nubigena H.B.K. (Lamiaceae) were analyzed by GC and GC/MS systems. The major components identified were thymol (36.9%), carvacrol (16.7%), pulegone (10.8%), caryophyllene oxide (4.6%) and (E)-phytol (3.2%). The major volatiles released by β-glucosidase treatment of the aqueous plant residue were (Z)-3-hexenol (31.2%), (Z)-2-hexenol (18.3%) and δ—cadinene (3.4%). The oil showed significant antibacterial activity against Staphylococcus aureus, Escherichia coli, Klebsiella pneumonia, and Pseudomonas aeruginosa, and antifungal activity against Candida albicans, Botrytis cinerea and Aspergillus niger, while the β-glucosidase-liberated fraction was inactive. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2008.9700057 [article] Essential oil analysis of micromeria nubigena H.B.K. and its antimicrobial activity [texte imprimé] / Hesham R. El-Seedi, Auteur ; Awatef Khattab, Auteur ; Ahmed H.M. Gaara, Auteur . - 2008 . - pp. 452-456. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 20 N°5 (Septembre/Octobre 2008) . - pp. 452-456 Mots-clés : Micromeria nubigena Lamiaceae Essential oil composition Thymol Carvacrol Pulegone Bound volatiles Anti-microbial activity Résumé : Water-distilled essential oil from leaves and flowers of Micromeria nubigena H.B.K. (Lamiaceae) were analyzed by GC and GC/MS systems. The major components identified were thymol (36.9%), carvacrol (16.7%), pulegone (10.8%), caryophyllene oxide (4.6%) and (E)-phytol (3.2%). The major volatiles released by β-glucosidase treatment of the aqueous plant residue were (Z)-3-hexenol (31.2%), (Z)-2-hexenol (18.3%) and δ—cadinene (3.4%). The oil showed significant antibacterial activity against Staphylococcus aureus, Escherichia coli, Klebsiella pneumonia, and Pseudomonas aeruginosa, and antifungal activity against Candida albicans, Botrytis cinerea and Aspergillus niger, while the β-glucosidase-liberated fraction was inactive. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2008.9700057

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