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The chemo-geographical variation in essential oil composition and the antimicrobial properties of "wild mint" / Alvaro M. Viljoen in The journal of essential oil research, Vol. 18 N° Spécial (Juillet 2006) 

Public ISBD [article]  in The journal of essential oil research > Vol. 18 N° Spécial (Juillet 2006) . - pp. 60-65 Titre : The chemo-geographical variation in essential oil composition and the antimicrobial properties of "wild mint" : Mentha longifolia subsp. polyadena (Lamiaceae) in Southern Africa Type de document : texte imprimé Auteurs : Alvaro M. Viljoen, Auteur ; Sahir Petkar, Auteur ; Sandy F. Van Vuuren, Auteur Année de publication : 2013 Article en page(s) : pp. 60-65 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Mentha  longifolia  subsp.  polyadena  Lamiaceae  Essential  oil  composition  1,8-cineole  Limonene  Menthofuran  Pulegone  Cis-piperitone  oxide  Piperitenone  oxide  Antimicrobial  activity Résumé : Mentha longifolia (L.) L. subsp. polyadena Briq. was collected from eight localities in southern Africa for a study of the chemical composition and antimicrobial activity. The essential oils were obtained by hydrodistillation and analysed by GC and GC/MS and a cluster analysis was performed on the oil dataset. From eight samples (representing eight natural populations), two major chemotypes were identified: a menthofuran-rich type (51-62%); and a cis-piperitone oxide (15-36%) and piperitenone oxide-rich type (15-66%). The constituent analysis showed quantitative variation with higher amounts of oxygen-containing monoterpenes ranging from 57% to 90% whilst the sesquiterpene hydrocarbons ranged from 4% to 17 %. The oil from the different geographical areas mostly showed moderate antimicrobial activity against Staphylococcus aureus, S. epidermidis, Bacillus cereus, Moraxella catarrhalis, Yersinia enterocolitica and Enterococcusfaecalis. The oils were generally inactive against Escherichia coli and Salmonella typhimurium. Candida albicans and Cryptococcus neoformans indicated highest sensitivities for oil samples from Komukwane and Prins Albert. These results may in part provide scientific evidence for the extensive use of Mentha longifolia in traditional healing. ISSN : 1041-2905 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=18019085 [article] The chemo-geographical variation in essential oil composition and the antimicrobial properties of "wild mint" : Mentha longifolia subsp. polyadena (Lamiaceae) in Southern Africa [texte imprimé] / Alvaro M. Viljoen, Auteur ; Sahir Petkar, Auteur ; Sandy F. Van Vuuren, Auteur . - 2013 . - pp. 60-65. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 18 N° Spécial (Juillet 2006) . - pp. 60-65 Mots-clés : Mentha  longifolia  subsp.  polyadena  Lamiaceae  Essential  oil  composition  1,8-cineole  Limonene  Menthofuran  Pulegone  Cis-piperitone  oxide  Piperitenone  oxide  Antimicrobial  activity Résumé : Mentha longifolia (L.) L. subsp. polyadena Briq. was collected from eight localities in southern Africa for a study of the chemical composition and antimicrobial activity. The essential oils were obtained by hydrodistillation and analysed by GC and GC/MS and a cluster analysis was performed on the oil dataset. From eight samples (representing eight natural populations), two major chemotypes were identified: a menthofuran-rich type (51-62%); and a cis-piperitone oxide (15-36%) and piperitenone oxide-rich type (15-66%). The constituent analysis showed quantitative variation with higher amounts of oxygen-containing monoterpenes ranging from 57% to 90% whilst the sesquiterpene hydrocarbons ranged from 4% to 17 %. The oil from the different geographical areas mostly showed moderate antimicrobial activity against Staphylococcus aureus, S. epidermidis, Bacillus cereus, Moraxella catarrhalis, Yersinia enterocolitica and Enterococcusfaecalis. The oils were generally inactive against Escherichia coli and Salmonella typhimurium. Candida albicans and Cryptococcus neoformans indicated highest sensitivities for oil samples from Komukwane and Prins Albert. These results may in part provide scientific evidence for the extensive use of Mentha longifolia in traditional healing. ISSN : 1041-2905 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=18019085