[article] 
inThe journal of essential oil research > Vol. 18 N° Spécial (Juillet 2006) . - pp. 19-25

Titre :	The geographical variation and antimicrobial activity of african wormwood (Artemisia afra Jacq.) essential oil
Type de document :	texte imprimé
Auteurs :	Alvaro M. Viljoen, Auteur ; Sandy F. Van Vuuren, Auteur ; Tebogo Gwebu, Auteur
Année de publication :	2013
Article en page(s) :	pp. 19-25
Note générale :	Génie Chimique
Langues :	Anglais (eng)
Mots-clés :	Artemisia afra Asteraceae Essential oil composition 1,8-cineole ketone α  -thujone β  -thujone alcohol Camphor Antimicrobial activity Death kinetics
Résumé :	The aerial parts of 16 individual Artemisia afra plants from four natural populations were hydrodistilled and the essential oil analyzed by GC/MS. The oil composition varied quantitatively and qualitatively within and between natural populations and showed no correlation to the geographical distribution. The antimicrobial activity was demonstrated by means of time-kill methodology using the respiratory pathogens C. neoformans and K. pneunwniae. Antimicrobial activity was most prominent within 10 min at concentration 0.75% for K. pneumoniae and within 60 min at concentration 1% for C. neofomans. Investigation of the four major compounds most abundant in the A. afra oil (artemisia ketone, 1,8-cineole, α- and β-thujone) indicated minimal antimicrobial activity when investigated independently and in various combinations against K. pneumoniae.
ISSN :	1041-2905
En ligne :	http://cat.inist.fr/?aModele=afficheN&cpsidt=18019076

[article] The geographical variation and antimicrobial activity of african wormwood (Artemisia afra Jacq.) essential oil [texte imprimé] / Alvaro M. Viljoen, Auteur ; Sandy F. Van Vuuren, Auteur ; Tebogo Gwebu, Auteur . - 2013 . - pp. 19-25.
Génie Chimique
Langues : Anglais (eng)
in The journal of essential oil research > Vol. 18 N° Spécial (Juillet 2006) . - pp. 19-25

Mots-clés :	Artemisia afra Asteraceae Essential oil composition 1,8-cineole ketone α  -thujone β  -thujone alcohol Camphor Antimicrobial activity Death kinetics
Résumé :	The aerial parts of 16 individual Artemisia afra plants from four natural populations were hydrodistilled and the essential oil analyzed by GC/MS. The oil composition varied quantitatively and qualitatively within and between natural populations and showed no correlation to the geographical distribution. The antimicrobial activity was demonstrated by means of time-kill methodology using the respiratory pathogens C. neoformans and K. pneunwniae. Antimicrobial activity was most prominent within 10 min at concentration 0.75% for K. pneumoniae and within 60 min at concentration 1% for C. neofomans. Investigation of the four major compounds most abundant in the A. afra oil (artemisia ketone, 1,8-cineole, α- and β-thujone) indicated minimal antimicrobial activity when investigated independently and in various combinations against K. pneumoniae.
ISSN :	1041-2905
En ligne :	http://cat.inist.fr/?aModele=afficheN&cpsidt=18019076