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OJVRTM
Online Journal of Veterinary Research©
Volume 21(9):580-583, 2017.
Effect of Verbascum
thapsus aqueous extract
on Escherichia coli O157:H7
Mehrdad Pooyanmehr1,
Mohammad Mahdi Zangeneh2, Akram Zangeneh*1, Maryam Almasi1
Department(s) 1Microbiology,
2Clinical Sciences, Faculty of Veterinary Medicine, Razi University, Kermanshah, Iran. *Corresponding author akramzangeneh@yahoo.com
ABSTRACT
Pooyanmehr
M, Zangeneh MM, Zangeneh A,
Almasi M., Effect of Verbascum
thapsus aqueous extract on Escherichia coli O157:H7, Onl J Vet Res., 21(9):580-583,
2017. Effects of V. thapsus
aqueous extract on growth of Escherichia coli O157:H7 in Mueller-Hilton
broth macro-dilution, agar well and disk diffusion are described. Aqueous
extract of V. thapsus
exhibited antibacterial activities against E. coli. In agar disk
diffusion the widest inhibition zone of 15 mm occurred in 0.083 g/ml V. thapsus compared with distilled water controls. In agar well diffusion, the widest inhibition
zone of 14 mm was observed in 0.083 g/ml. Minimum inhibitory and bactericidal
concentrations of V. thapsus
were 0.02 g/ml. We found discrepancies in E. coli sensitivity to V.
thapsus with greater inhibition
in disk diffusion tests. Results suggest V. thapsus extracts could inhibit Escherichia
coli O157:H7 In Vitro.
Keywords: Verbascum thapsus; aqueous extract; Escherichia coli.