Researchers have found that a probiotic commonly found in kimchi, a traditional Korean fermented food, may help the body remove tiny plastic particles from the gut. These particles, known as nanoplastics, are extremely small (about one-millionth of a meter or less) and are formed when larger plastics break down. They can enter the human body through food and drinking water and may even pass into organs like the brain or kidneys, raising growing health concerns.
The study, conducted by scientists at the World Institute of Kimchi, focused on a specific type of beneficial bacteria called Leuconostoc mesenteroides CBA3656. This bacterium is naturally present in kimchi and is known for its probiotic properties, which support gut health.
In laboratory tests designed to mimic the human digestive system, researchers found that this probiotic could bind to nanoplastics with an efficiency of about 57%. This means the bacteria can attach to plastic particles, potentially preventing them from staying in the body.
To better understand how this works in living organisms, the team conducted experiments using mice raised in sterile conditions. The results were promising: mice that were given the probiotic passed more than twice as many nanoplastics in their feces compared to those that did not receive it. This suggests the bacteria helped carry the plastic particles out of the body.
While the findings are still in early stages and more research is needed—especially in humans—they point to a possible natural way to reduce the buildup of harmful microplastics in the body. Scientists believe that probiotics from fermented foods like kimchi could play an important role in addressing both environmental and public health challenges.
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