Kimchi-Kraut and Nanoplastics: What the Latest Research Shows

Published: 19 September 2026

I don't usually share research articles — mostly because a lot of gut health content online is either exaggerated or just trying to sell you something. But this one stopped me.

A study published in September 2026 in Bioresource Technology looked at a bacterium found in kimchi — Leuconostoc mesenteroides CBA3656 — and tested whether it could bind to nanoplastics under conditions that mimic the human gut. It could. And in mouse trials, the group given the probiotic had more than double the nanoplastics in their faeces compared to the control group.

Which suggests the bacterium may be grabbing hold of the particles in the intestine and carrying them out, rather than letting them accumulate.

I want to be upfront: this is early research. Animal studies don't always translate to humans. No one is saying kimchi is a cure or a treatment. But the mechanism is specific, it's measurable, and it was published in a peer-reviewed journal. That's enough for me to think it's worth sharing.

What are nanoplastics, and why should you care?

Nanoplastics are tiny plastic particles — less than 1 micrometre — that form as larger plastics break down over time. They get into food and drinking water. Because they're so small, they can cross the gut lining and potentially accumulate in organs like the kidneys and brain.

It's one of those slow modern problems that's hard to avoid entirely. Which is exactly why this kind of research matters.

Why does raw, unpasteurised kimchi matter here?

Our Kimchi-Kraut is raw and unpasteurised. Pasteurisation uses heat — and heat kills bacteria, including the lactic acid bacteria that this research is specifically about.

We make our Kimchi-Kraut in small batches near Bela-Bela using traditional fermentation. No heat treatment after fermentation, no preservatives. The live cultures are in the jar when it leaves us, the same way they are in traditional kimchi.

We're not saying our Kimchi-Kraut will flush nanoplastics from your body. That would go further than the evidence supports right now. What I can say is that the bacterium studied is the same category found in live, traditionally fermented kimchi — and ours qualifies.

What this means practically

Nothing dramatic. You don't need to start eating fermented food like it's medicine.

But if you're already interested in real food made the traditional way — without shortcuts — it's good to know the science is starting to give us more to work with. A tablespoon or two of Kimchi-Kraut alongside your meals is a simple habit. That's all we've ever suggested.

And apparently, there might be more going on in that jar than just flavour.

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This article discusses published scientific research. Animal study findings do not constitute medical advice. Fermentastic products are fermented foods, not supplements or treatments.

Source: Lee, J. et al. (2026). Efficient biosorption of nanoplastics by food-derived lactic acid bacterium. Bioresource Technology, 447, 134234. DOI: 10.1016/j.biortech.2026.134234