Glass bottles found to have five to 50 times as many microplastics as plastic bottles in shocking new study
Looks like the glass is half full…of plastic.Microplastics are everywhere — in your chewing gum, your beauty products and even your favorite junk food.
Given the name, it’s reasonable to assume you’re more likely to find them in products containing plastic than not.But a jaw-dropping new study — published in the Journal of Food Composition and Analysis — has discovered quite the opposite seems to be the case.
Guillaume Duflos, research director at French food safety watchdog ANSES, told AFP that his team set out to “investigate the quantity of microplastics in different types of drinks sold in France and examine the impact different containers can have.”Much to their surprise, they found that glass-bottled beverages — including lemonade, iced tea, beer and soda — had five to 50 times more microplastics than their plastic or metal counterparts.Needless to say, the team “expected the opposite result,” study co-author Iseline Chaib told AFP.
Researchers found an average of roughly 100 microplastic particles per liter in these glass bottles, which they pinned on the paint on their caps.“We…noticed that in the glass, the particles emerging from the samples were the same shape, color and polymer composition — so, therefore, the same plastic — as the paint on the outside of the caps that seal the glass bottles,” Chaib said.
They theorized that “tiny scratches, invisible to the naked eye, probably due to friction between the caps when there were stored,” might subsequently “release particles onto the surface of the caps.”Still, some of the study’s findings remain a mystery.The team found only 4.5 particles and 1.6 particles of microplastics per liter in glass and plastic bottles, respectively.
And — in more good news — bottles of wine also contained very few microplastics, even when capped.In contrast, there were 60, 40 and 30 microplastics per liter in beer, lemonade and soft drinks, respectively.Duflos admitted that t...