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Detection of Microplastic Chemicals in Beer Packaged in Aluminium Cans
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This Croatian study detected microplastic chemical markers in beer packaged in aluminum cans, likely from plastic coatings lining the cans. The finding suggests that even non-plastic packaging can be a source of microplastic chemical exposure through food and beverages.
Mikroplastika je sveprisutna u hrani, piću i okolišu. Izloženost i prisutnost mikroplastičnih čestica i kemikalija povezanih sa mikroplastikom sve se više istražuje. Pakiranjem piva u aluminijske limenke osigurava se trajnost proizvoda u senzorskom i fizikalno-kemijskom smislu, no različiti polimerni premazi koji se koriste u proizvodnji limenki mogu biti izvori kemikalija povezanih sa mikroplastikom, kao što su ftalati i bisfenol A. Zadatak ovog rada je istražiti količine ftalata i bisfenola A pomoću GC-MS-a, a koji se mogu pronaći u pivima pakiranim u aluminijske limenke, a komercijalno su dostupne u trgovinama u raznim europskim zemljama. Pivo će se također analizirati pomoću FTIR tehnologije. Hipoteza rada je da limenke iz raznih zemalja nisu jednake kvalitete i sastava, pri čemu će se i limenke analizirati pomoću FT-IR tehnologije. FTIR analiza rezultira listom velikog broja kemikalija za što je ključno daljnje iscrpno pretraživanje literature kako bi se mogle povezati sa mikroplastikom i kemikalijama povezanim sa mikroplastikom.
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Researchers analyzed the polymer types and plastic additives found in the internal coating films of beer cans from 16 countries, identifying potential sources of microplastic and chemical contamination in a widely consumed packaged beverage. The study found variation in coating composition across countries, with implications for food safety monitoring of canned products.
Detection of Microplastics in Beer Packaged in Aluminum Cans via FT-IR Technology
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Researchers used FT-IR spectroscopy to detect microplastic particles in beer packaged in aluminum cans, finding that polymer coatings used in can manufacturing can shed plastic particles into the beverage. This is relevant to human microplastic exposure through food and drink, adding to evidence that beverage packaging is a dietary source of microplastic ingestion.
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Researchers surveyed phthalate concentrations in beer packaged in aluminum cans, PET bottles, and glass bottles. The study found varying levels of six different phthalate compounds across packaging types, highlighting that phthalates can migrate from packaging materials into beverages and that microplastic particles may serve as additional vectors for these endocrine-disrupting chemicals.
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Researchers analyzed the plastic coating films inside and outside beer cans from 16 countries and found that epoxy resin was the dominant polymer used, along with chemical additives like DEHP and BHT at concentrations up to thousands of nanograms per gram. Environmental samples of degraded metal cans showed one to two orders of magnitude higher additive concentrations than new cans, suggesting corroded metal packaging becomes a significant source of plastic-associated chemical pollution.
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Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.