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Listeria in Controlled Atmosphere Storage Facilities

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July 17, 2024 - Teresa Bergholz<tmb@msu.edu> and Heather Borden<bordenhe@msu.edu>, Michigan State University

Food safety issues related to Listeria presence in apple storage rooms was discussed and Michigan-based survey was described. Generally, the percentage of samples positive for Listeria were quite low (~4%), but the percentage of these few positive samples that contained the pathogenic strain L. monocytogenes was high (>70%). The most common place where Listeria was detected was on the floor beneath the evaporator coils. Recommendations for monitoring Listeria and reducing risk are provided.

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  • agriculture,
  • apples,
  • fruit & nuts,
  • msu extension

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