期刊
KOREAN JOURNAL FOR FOOD SCIENCE OF ANIMAL RESOURCES
卷 36, 期 2, 页码 186-193出版社
KOREAN SOC FOOD SCIENCE ANIMAL RESOURCES
DOI: 10.5851/kosfa.2016.36.2.186
关键词
bacteriophage; Escherichia coli O157:H7; inhibition; meat; multiplicity of infection (MOI)
资金
- National Institute of Animal Science Rural Development Administration, Republic of Korea [20130058]
- Chung-Ang University Excellent Student Scholarship
This study aimed to inhibit Escherichia coli (E. coli) O157:H7 artificially contaminated in fresh meat using bacteriophage. Among 14 bacteriophages, the highly lytic bacteriophage BPECO19 strain was selected to inhibit E. coli O157:H7 in artificially contaminated meat samples. Bacteriophage BPECO19 significantly reduced E coli O157:H7 bacterial load in vitro in a multiplicity of infection (MOI)-dependent manner. E. coli O157:H7 was completely inhibited only in 10 min in vitro by the treatment of 10,000 MOI BPECO19. The treatment of BPECO19 at 100,000 MOI completely reduced 5 Log CFU/cm(2) E. coli O157:H7 bacterial load in beef and pork at 4 and 8 h, respectively. In chicken meat, a 4.65 log reduction of E. coli O157:H7 was observed at 4 h by 100,000 MOI. The treatment of single bacteriophage BPECO19 was an effective method to control E. coli O157:H7 in meat samples.
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