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Susceptibility of the honeybee bacterial pathogen paenibacillus larvae to essential oils distilled from exotic and indigenous argentinean plants / Sandra R. Fuselli in The journal of essential oil research, Vol. 20 N°5 (Septembre/Octobre 2008) 

Public ISBD [article]  in The journal of essential oil research > Vol. 20 N°5 (Septembre/Octobre 2008) . - pp. 464-470 Titre : Susceptibility of the honeybee bacterial pathogen paenibacillus larvae to essential oils distilled from exotic and indigenous argentinean plants Type de document : texte imprimé Auteurs : Sandra R. Fuselli, Auteur ; S. B. García de la Rosa, Auteur ; M. J. Eguaras, Auteur Année de publication : 2008 Article en page(s) : pp. 464-470 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Artemisia  absinthium  Artemisia  annua  Wedelia  glauca  Heterothalamus  alienus  Asteraceae  Lepechinia  fori-bunda  Satureja  odora  Labiatae  Aloysia  polystachya  Verbena  officinalis  Verbenaceae  Headspace  volatiles  α-pinene  β-pinene  Limonene  Pulegone  Carvone  Menthone  α-thujone  1,8-cineole  Artemisia  ketone  Camphene  Camphor  Antimicrobial  activity  Paenibacillus  larvae  American  Foulbrood Résumé : Antimicrobial properties and chemical composition of eight exotic and indigenous Argentinean essential oils to control American Foulbrood (AFB) were determined. The oils tested were extracted from Artemisia absinthium, Artemisia annua, Lepechinia floribunda, Aloysia polystachya, Verbena officinalis, Wedelia glauca, Satureja odora and Hetherothalamus alienus. The components of the essential oils were identified by SPME-GC/MS analysis. The antimicrobial activity of the oils against Paenibacillus larvae were determined by broth microdilution method. Two-way ANOVA for minimum inhibitory concentrations (MICs) data and minimal bactericide concentrations (MBCs) data, indicated no significant differences between the thirteen P. larvae strains tested and highly significant differences between the oils. The antimicrobial assays showed that the oils of A. absinthium, A. annua and L. foribunda inhibited the bacterial strains at the lowest concentrations tested, MICs and MBCs averages of 393.6 mg/L to 416.7 mg/L and 517.9 mg/L to 624.4 mg/L respectively, indicating the highest inhibitory capacities. Their antimicrobial activities were attributed to the kind and the variation in percentage of the components. α-Thujone (62.3%) was largely predominant in the oil of the A. absinthium meanwhile artemisia ketone (36.3%) and 1,8-cineole (31.5%) constituted the bulk of the oil of A. annua. 1,8-Cineole (27.5%) was also very important in the composition of the oil of L. floribunda, which also possessed camphene (16.6%) and camphor (12.9%). ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2008.9700060 [article] Susceptibility of the honeybee bacterial pathogen paenibacillus larvae to essential oils distilled from exotic and indigenous argentinean plants [texte imprimé] / Sandra R. Fuselli, Auteur ; S. B. García de la Rosa, Auteur ; M. J. Eguaras, Auteur . - 2008 . - pp. 464-470. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 20 N°5 (Septembre/Octobre 2008) . - pp. 464-470 Mots-clés : Artemisia  absinthium  Artemisia  annua  Wedelia  glauca  Heterothalamus  alienus  Asteraceae  Lepechinia  fori-bunda  Satureja  odora  Labiatae  Aloysia  polystachya  Verbena  officinalis  Verbenaceae  Headspace  volatiles  α-pinene  β-pinene  Limonene  Pulegone  Carvone  Menthone  α-thujone  1,8-cineole  Artemisia  ketone  Camphene  Camphor  Antimicrobial  activity  Paenibacillus  larvae  American  Foulbrood Résumé : Antimicrobial properties and chemical composition of eight exotic and indigenous Argentinean essential oils to control American Foulbrood (AFB) were determined. The oils tested were extracted from Artemisia absinthium, Artemisia annua, Lepechinia floribunda, Aloysia polystachya, Verbena officinalis, Wedelia glauca, Satureja odora and Hetherothalamus alienus. The components of the essential oils were identified by SPME-GC/MS analysis. The antimicrobial activity of the oils against Paenibacillus larvae were determined by broth microdilution method. Two-way ANOVA for minimum inhibitory concentrations (MICs) data and minimal bactericide concentrations (MBCs) data, indicated no significant differences between the thirteen P. larvae strains tested and highly significant differences between the oils. The antimicrobial assays showed that the oils of A. absinthium, A. annua and L. foribunda inhibited the bacterial strains at the lowest concentrations tested, MICs and MBCs averages of 393.6 mg/L to 416.7 mg/L and 517.9 mg/L to 624.4 mg/L respectively, indicating the highest inhibitory capacities. Their antimicrobial activities were attributed to the kind and the variation in percentage of the components. α-Thujone (62.3%) was largely predominant in the oil of the A. absinthium meanwhile artemisia ketone (36.3%) and 1,8-cineole (31.5%) constituted the bulk of the oil of A. annua. 1,8-Cineole (27.5%) was also very important in the composition of the oil of L. floribunda, which also possessed camphene (16.6%) and camphor (12.9%). ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2008.9700060