Love to use cutting board to cut vegetables easily? Beware, these boards, both plastic and wooden, are a potentially important source of harmful microplastics in the human diet, warns a study led by researchers including one of Indian origin. Ingested microplastics are known to cause various health problems, such as increased inflammation, impaired fasting glucose, insulin resistance, type 2 diabetes and heart disease.
They can cause cell damage, leading to inflammation and allergic reactions, as well as leading to reproductive harm and obesity. Researchers at North Dakota State University report that cutting carrots on wood and plastic boards can produce millions of microparticles a year.
However, a toxicity test showed no significant effect on mouse cell survival from either polyethylene or wood microparticles released during cutting. Most cutting boards are made of rubber, bamboo, wood or plastic. Over time, these kitchen tools develop grooves and slash marks from mincing, slicing, and slicing food.
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Recently, researchers have shown that some plastic board materials, including polypropylene and polyethylene, can shed nano- and micro-sized flakes when cut with a knife. In the new study, published in the journal Environmental Science and Technology, researchers collected and measured micro-sized particles emitted from a cutting board, which was repeatedly struck by a knife. In their experiment, they compared the cutting patterns of five people and the cutting of one person in different materials with and without carrots.
From the results, the team calculated that food preparation could produce 14 to 71 million polyethylene microplastics and 79 million polypropylene microplastics from their respective boards each year. Although annual estimates for wood boards have not been determined, researchers report that these items repel 4 to 22 times more microparticles than plastic in various tests.
But even though many microparticles were produced, the researchers found that polyethylene microplastics and wood microparticles did not appear to significantly alter mouse cell function in lab tests when cutting carrots.
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