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Microplastics contamination in food and beverages: Direct exposure to humans
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This review analyzed 108 studies on microplastic contamination in food and beverages, finding that humans are exposed through seafood, salt, drinking water, bottled water, and packaged foods. Bottled water showed particularly wide-ranging contamination levels of up to 6,292 particles per liter. The study concludes that dietary ingestion of microplastics is a significant and unavoidable exposure route that warrants further investigation.
Since microplastics (MPs) bring the potential risks to human health when plastics are ingested, more needs to be known about the presence and abundance of human ingestion of MPs. To address these issues, we reviewed 108 publications in Web of Science concerning abundances, sources, and analytical methods of MPs in human daily intake including fish, salt, drinking water, beverages, package food, and other food. The results demonstrate that aquatic food products (fish and bivalves) present a wide range of 0-10.5 items/g for bivalves and 0-20 items/individual for fish. Salt data in literatures present a concentration of 0-13,629 particles/kg. Drinking water is also a pathway of MPs exposure to human, presenting a concentration range from 0 to 61 particles/L for tap water and 0 to 6292 MPs/L for bottled water. Besides, MPs have been found in beverages, package food, sugar, honey, vegetables, and fruits. Therefore, human intake of MPs via ingestion is a nonnegligible exposure route.
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This review summarizes existing research on microplastics found in food and drinks. Studies measured microplastic particles in fish, shellfish, salt, tap and bottled water, and other beverages, with amounts varying widely across these items. The review concludes that eating and drinking are important ways people may be exposed to microplastics.
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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.