Journal
FOODS
Volume 10, Issue 9, Pages -Publisher
MDPI
DOI: 10.3390/foods10092117
Keywords
biofilm; pathogenesis; food safety; Listeria; Salmonella; E. coli; Pseudomonas; Staphylococcus
Categories
Funding
- National Academy of Science (NAS)
- USAID [AID-263-A-15-00002]
- Korean Food Research Institute (KFRI grant) [E0142102-03]
- U.S. Department of Agriculture, Agricultural Research Service [59-8072-6-001]
- USDA National Institute of Food and Agriculture (Hatch) [1016249]
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Biofilm formation by bacteria in food processing environments is a major source of foodborne illness outbreaks. This review focuses on the connection between bacterial biofilm formation and pathogenicity in common foodborne pathogens. Molecular level studies reveal the dual functions of bacterial molecules in biofilm formation and pathogenicity.
Biofilm formation is an integral part of the microbial life cycle in nature. In food processing environments, bacterial transmissions occur primarily through raw or undercooked foods and by cross-contamination during unsanitary food preparation practices. Foodborne pathogens form biofilms as a survival strategy in various unfavorable environments, which also become a frequent source of recurrent contamination and outbreaks of foodborne illness. Instead of focusing on bacterial biofilm formation and their pathogenicity individually, this review discusses on a molecular level how these two physiological processes are connected in several common foodborne pathogens such as Listeria monocytogenes, Staphylococcus aureus, Salmonella enterica and Escherichia coli. In addition, biofilm formation by Pseudomonas aeruginosa is discussed because it aids the persistence of many foodborne pathogens forming polymicrobial biofilms on food contact surfaces, thus significantly elevating food safety and public health concerns. Furthermore, in-depth analyses of several bacterial molecules with dual functions in biofilm formation and pathogenicity are highlighted.
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