A recycling revolution beckons using plastic-eating bacteria found in trash decades ago
Sustainability

  • Two decades after microbes were found eating rubbish, genetic engineering is being done to scale up their diet in an effort to revolutionise plastic recycling

In 2001, a group of Japanese scientists made a startling discovery at a rubbish dump.

In trenches packed with dirt and waste, they found a slimy film of bacteria that had been happily chewing through plastic bottles, toys and other bric-a-brac.

As they broke down the trash, the bacteria harvested the carbon in the plastic for energy, which they used to grow, move and divide into even more plastic-hungry bacteria.

Even if not in quite the hand-to-mouth-to-stomach way we normally understand it, the bacteria was eating the plastic.

Kohei Oda, who led the group of Japanese scientists that discovered bacteria chewing through plastic in 2001. Photo: Kyoto Institute of Technology
Kohei Oda, who led the group of Japanese scientists that discovered bacteria chewing through plastic in 2001. Photo: Kyoto Institute of Technology

The scientists were led by Kohei Oda, a professor at the Kyoto Institute of Technology. His team was looking for substances that could soften synthetic fabrics, such as polyester, which is made from the same kind of plastic used in most drink bottles.

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