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http://dx.doi.org/10.13103/JFHS.2017.32.4.336

Antimicrobial Activity of Flos Syzygii Aromatici Extracts against Mice Infected with Escherichia coli O157:H7  

Lee, Soo-Mi (Department of Environmental Health, Graduate School of Public Health, Gyeongsang National University)
Son, Song Ee (Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University)
Lee, Hu Jang (Department of Environmental Health, Graduate School of Public Health, Gyeongsang National University)
Publication Information
Journal of Food Hygiene and Safety / v.32, no.4, 2017 , pp. 336-340 More about this Journal
Abstract
The present study evaluated the antibacterial effect of Flos syzygii Aromatici methanolic extracts (FSAE). In addition, the effectiveness of FSAE against Escherichia coli O157:H7 infection was studied using ICR female mice. At 24 h after incubation of E. coli O157:H7, FSAE at the concentration of 0.269 (p < 0.05), 0.538 (p < 0.001) and 1.075 mg/mL (p < 0.001) significantly inhibited the growth of E. coli O157:H7 compared to the control group. After single challenge with E. coli O157:H7, forty female ICR mice were divided into four experimental groups which were orally administered with saline (control), 0.538 (group 1), 1.075 (group 2) and 2.15 mg/mL (group 3) of FSAE, respectively. On the 3rd day, the number of fecal E. coli O157:H7 in group 2 (p < 0.05) and group 3 (p < 0.01) was significantly decreased compared to that in the control group. On the 7th day post-treatment, the number of fecal E. coli O157:H7 in all FSAE-treated groups was significantly decreased compared to that in the control group (group 1, p < 0.05; group 2 and 3, p < 0.001). According to the results of the present study, administration of FSAE to mice can reduce the severity of E. coli O157:H7 infection. Therefore, the current study suggests that FSAE could be a good candidate for the treatment of enteric infections in domestic animals.
Keywords
Flos syzygii Aromatici; Antibacterial Activity; E. coli O157:H7;
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