The occurrence of Listeria monocytogenes is associated with built environment microbiota in three tree fruit processing facilities

摘要: Multistate foodborne disease outbreaks and recalls of apples apple products contaminated with Listeria monocytogenes demonstrate the need for improved pathogen control in supply chain. Apple processing facilities have been identified past as potential sources persisting L. contamination. In this study, we sought to understand composition microbiota built apple other tree fruit environments its association occurrence monocytogenes. Analysis 117 samples collected from three apple and packing (F1, F2, F3) showed that facility F2 had a significantly higher compared F1 F3 (p < 0.01). The was distinct supported by mean Shannon index bacterial fungal alpha diversities lower Microbiota uniquely predominated family Pseudomonadaceae Dipodascaceae. diversity mycobiota present investigated built food may be indicative persistent contamination These findings support further investigation role microbial communities persistence optimization strategies