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Foodborne pathogens in the plastisphere: Can microplastics in the food chain threaten microbial food safety?
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This review examines the potential for microplastics to act as vectors for foodborne pathogens in the food chain, synthesizing current evidence on pathogen attachment to the plastisphere, the effects of microplastics on bacterial virulence and evolution, and the implications for simultaneous uptake of microplastics and pathogens in the human gut.
Microplastics (MPs) contaminate the global marine and terrestrial ecosystems. This environmental contamination can enter the food chain, with MPs found in drinking water, fishery products and other food categories. Consequently, ingestion is considered the main route of human exposure to MPs. Concerns exist on the potential of MPs to act as vectors for pathogenic bacteria, possibly threatening microbial food safety. Starting from the current evidence on foodborne pathogens associated with MPs, we review the state of knowledge on the putative role of MPs in enhancing harmful bacterial traits and transporting them to humans. Finally, we focus on the simultaneous uptake of MPs and pathogens in the human gut. Overall, we identify major knowledge gaps, both on the mechanisms and the possible health outcomes. The scarce and inconclusive results regarding the effect of MPs on microbial virulence and evolution, together with the insufficient knowledge about the attachment of microbial toxins to MPs, highlight the need for further studies. We conclude that biofilm-coated MPs in foodstuffs may pose several risks to food safety, but further research will be essential to determine the extent of their effect on human health
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Foodborne pathogens in the plastisphere: Can microplastics in the food chain threaten microbial food safety?
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This review highlights how microplastics in the food chain serve as surfaces for microbial colonization, potentially acting as vehicles that transfer harmful pathogens through seafood, produce, and food processing environments. The authors argue that current food safety standards are inadequate to address this microplastic-driven microbial risk and that urgent regulatory and research action is needed.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.