A major breakthrough in the fight against plastic pollution has arrived. Scientists at the University of California San Diego have pioneered a “self-digesting” plastic infused with specialized bacteria. This revolutionary material could change how we manage plastic waste, reducing pollution and landfill buildup.
Polyurethane, a versatile plastic found in phone cases, shoes, and countless other products, poses a significant recycling challenge. It often ends up in landfills, contributing to environmental damage. The UC San Diego researchers have found a groundbreaking solution: embedding spores of plastic-eating bacteria into the plastic itself.
These spores lie dormant while the plastic product is in use. However, under composting conditions, the spores activate and begin to break down the plastic. “Our process makes the materials more rugged, so it extends its useful lifetime,” explained co-researcher Jon Pokorski. “And then, when it’s done, we’re able to eliminate it from the environment, regardless of how it’s disposed.”
The research team, led by Han Sol Kim, utilized Bacillus subtilis bacteria – a safe and widely used microbe found in food additives and probiotics. Through genetic engineering, the bacteria were modified to withstand the high temperatures involved in plastic production.
This new plastic offers a promising path towards reducing plastic pollution, but some experts maintain that the most effective approach is to reduce our plastic consumption altogether. Global efforts like the UN plastics treaty remain essential in tackling the plastic crisis on a worldwide scale.
Source: BBC, The research is published in the journal, Nature Communications.
