Short communication. Inhibition of Paenibacillus larvae subsp. larvae by the essential oils of two wild plants and their emulsifying agents

  • S.R. Fuselli Fac Ciencias Exactas y Naturales,UNMdP, CIC. Funes 3350
  • L.B. Gende Facultad de Ciencias Exactas y Naturales. CONICET. Universidad Nacional de Mar del Plata. Mar del Plata (Buenos Aires)
  • S.B. Garcia de la Rosa Fac Ciencias Exactas y Naturales, UNMdP. Funes 3350
  • M.J. Eguaras CONICET. Universidad Nacional de Mar del Plata. Mar del Plata (Buenos Aires)
  • R. Fritz Facultad de Ciencias Exactas y Naturales. Universidad Nacional de Mar del Plata. Mar del Plata (Buenos Aires)
DOI: https://doi.org/10.5424/sjar/2005032-147
Keywords: Honey bees, Foul brood, Bacillus larvae, Bactericides, Essential oils, Tagetes, Verbenaceae, Emulsifiers, Alcohols, Lecithins, In vitro experimentation, Disease control

Abstract

In honey bees (Apis mellifera L.), American foulbrood (AFB) is caused by the infection of the larvae and pupae with the bacterium Paenibacillus larvae subsp. larvae. The antibacterial effects of the essential oils of wild camomile (Tagetes minuta L.) and Andean thyme (Acantholippia seriphioides A. Gray) against different strains of P. larvae subsp. larvae were evaluated in vitro. The possible inhibitory effects of two emulsifiers of these oils (propylene glycol and soybean lecithin) were also assessed. Significant differences in antibacterial action were seen between the oils and emulsifiers (P<0.01). Andean thyme had the strongest antibacterial effect; the minimum inhibitory and minimum bactericide concentrations were 200-250 mg lE-1 and 300 mg lE-1 respectively. An additional inhibitory effect was seen when propylene glycol was used as an emulsifier; no such extra effect was seen when soybean lecithin was employed.

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Published
2005-06-01
How to Cite
Fuselli, S., Gende, L., Garcia de la Rosa, S., Eguaras, M., & Fritz, R. (2005). Short communication. Inhibition of Paenibacillus larvae subsp. larvae by the essential oils of two wild plants and their emulsifying agents. Spanish Journal of Agricultural Research, 3(2), 220-224. https://doi.org/10.5424/sjar/2005032-147
Issue
Vol. 3 No. 2 (2005)
Section
Invisible

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