A peer-reviewed study by France's food safety agency reveals that metal bottle caps are a significant source of microplastic contamination in beverages. Researchers identified microplastics in beer, water, wine, and soft drinks, with glass bottles showing the highest contamination levels. The polyester-based paint on metal caps was linked to the majority of microplastic particles found, which are capable of releasing thousands of harmful chemicals associated with serious health risks. Liquid in glass bottles contained about 50 times more microplastics than that in plastic bottles, pointing to packaging as a vital contamination route.
The study found that metal bottle caps are a significant source of microplastic contamination in beverages, leading to serious health risks from plastic chemicals.
Researchers identified particles identical to the color of the metal caps, indicating that the polyester-based paint on the caps is a primary contamination source.
Microplastics contain thousands of harmful chemicals like BPA and phthalates, linked to serious health conditions such as heart attack, cancer, and neurotoxic effects.
Testing found microplastics in various beverages; levels were about 50 times higher in liquid from glass bottles than from plastic, confirming contamination source.
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