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This study aims to assess the prevalence, diversity, and distribution of Listeria species in controlled atmosphere storage facilities for apples.

Environmental Monitoring for Listeria Species in Controlled Atmosphere Apple Storage Facilities

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This study aims to assess the prevalence, diversity, and distribution of Listeria species in controlled atmosphere storage facilities for apples.
Conducted a two-year longitudinal study in three facilities (A, B, and C)
Collected 304 samples from Zone 3 non-food contact surfaces
Analyzed samples for Listeria species presence and subtype identification
5.9% of samples were positive for Listeria species, primarily found on floors below condenser units
L. monocytogenes was the most common species detected, accounting for 61.1% of positive samples
No repeated detection of the same subtype at identical locations over the study period, except for Facility A where L. monocytogenes was found repeatedly on the same floor but of different subtypes

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Longitudinal study assesses Listeria species prevalence in controlled atmosphere storage, indicating the need for monitoring.

Zeng et al. (2026) studied this question.

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