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Microplastics in infant milk powder
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Researchers found microplastics in 13 brands of infant milk powder, with boxed products containing nearly twice as many particles as canned versions, likely from plastic-lined packaging. However, the biggest source of microplastic exposure for bottle-fed infants was not the powder itself but the plastic feeding bottles, which released nearly seven times more microplastics. This study highlights that the containers used to prepare and serve infant formula are a more significant source of microplastic exposure for babies than the formula itself.
Microplastics can be found almost everywhere and extensively expose to human. Infants are vulnerable, and the potential risks of microplastics may be greater for infants, however, infants' microplastic exposure is still poorly understood. Since milk powder makes up a significant portion of many infants' diets, we investigated microplastic pollution in infant milk powder and calculated the microplastic exposure from milk powder, feeding bottles and milk powder preparation. On one hand, we studied 13 different types of milk powder with different packaging, processing systems, and milk sources. The boxed milk powder (7 ± 3 items/100 g) was more polluted with microplastics than the canned milk powder (4 ± 3 items/100 g). The inner packaging of the boxed milk powder was plastic and aluminum foil laminated, it emitted 8 ± 2 to 17 ± 1 items/100 g of microplastics, and might be a main source of microplastics in boxed milk powder. On the other hand, we found that when infants consume milk powder, the microplastic exposure from milk powder itself is little, exposure from feeding bottles is 6.8 times higher than that from milk powder and milk powder preparation is 1.7 times higher.
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