Abstract
This study investigated the antibacterial effects of Galla rhois extract (GRE) against Campylobacter jejuni and Campylobacter coli. The minimum inhibitory concentrations (MICs) of GRE against C. jejuni and C. coli were 0.28 and 0.55 mg/mL, respectively, and the corresponding minimum bactericidal concentrations (MBCs) were 4.4 and 5.5 mg/mL. C. jejuni treated with the MIC, MBC or 2×MBC of GRE showed significant inhibition of growth compared with that of the control group during the incubation period, and no viable bacteria were detected at 24 h after incubation. C. coli treated with MIC, MBC or 2×MBC of GRE also showed inhibition of growth compared with that of the control group during the incubation period, and in the C. coli cultures treated with MBC and 2×MBC of GRE, no viable bacteria were detected at 24 h after incubation. In conclusion, GRE is a candidate antibacterial agent against C. jejuni and C. coli, and may have applications for the control of Campylobacter infection in poultry.
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