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]  inThe 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 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 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 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 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

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