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Antibacterial effects of vinegar N6 and UV-C light-emitting diodes against Shiga toxin-producing and enterohemorrhagic Escherichia coli in fresh beef

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Abstract

Some Escherichia coli serotypes cause diarrhea in infants and acute gastroenteritis. In this study, the incidence of Shiga toxin-producing (STEC) and enterohemorrhagic (EHEC) E. coli in 310 fresh raw beef samples and the presence of pathogenicity-associated virulence genes in the isolated strains were evaluated. The contamination rate reached 18.06% (STEC, 12.26%; EHEC, 5.81%). The highest rate of identified virulence genes was 8.38% for stx2 and 3.23% for stx2 and eae in STEC and EHEC, respectively. Vinegar N6 significantly lowered E. coli growth in beef samples, depending on its concentration (> 0.5%), treatment temperature (5 or 10 °C), and E. coli type (STEC, EHEC, or enteropathogenic), during 28 days of storage. However, no bactericidal effects were detected, unlike those observed for combined treatment with UV-C LED and vinegar N6. Treatment with vinegar N6 and UV-C LED together may significantly reduce E. coli growth in fresh beef, thereby improving food safety.

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Acknowledgements

We would like to thank Editage (www.editage.co.kr) for English language editing.

Funding

This study was funded by the Pulmuone Institute of Technology as a part of their annual research budget; hence, no grant number is available.

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Authors and Affiliations

  1. Food Safety Center, Pulmuone Institute of Technology, 29, Osongsaengmyeong 10-ro, Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do, 28220, Republic of Korea

    Eun Young Ro, Mi Ri Choi, Young Min Park, Sang Gu Kim & Sang Yun Lee

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  1. Eun Young Ro
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  2. Mi Ri Choi
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Correspondence to Young Min Park.

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Ro, E.Y., Choi, M.R., Park, Y.M. et al. Antibacterial effects of vinegar N6 and UV-C light-emitting diodes against Shiga toxin-producing and enterohemorrhagic Escherichia coli in fresh beef. Food Sci Biotechnol 32, 1205–1214 (2023). https://doi.org/10.1007/s10068-023-01260-x

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  • DOI: https://doi.org/10.1007/s10068-023-01260-x

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