🚨 THE NEXT GENERATION OF PLASTIC MAY BE GROWN FROM POTATO WASTE INSTEAD OF OIL.
Researchers at the University of Barcelona have modified Bacillus subtilis so it can take ordinary potato starch and convert it directly into polyhydroxybutyrate (PHB) a strong, biodegradable bioplastic in a single step.
Using CRISPR gene editing, they optimized the bacterium’s metabolism and added the ability to break down raw starch on its own. In flask-scale tests, it produced 5.8 grams per liter of high-purity PHB, reaching over 50% of the cell’s dry weight.
Why this matters:
• Most bioplastics still require expensive pre-processed sugars or industrial CO₂ sources
• Potato starch is cheap, abundant, and often a waste product from food processing
• PHB is fully biodegradable and has properties similar to conventional plastics
• The entire process happens in just 24 hours using a safe, well-characterized industrial bacterium
• It reduces reliance on petrochemical plastics and agricultural waste
The deeper implication:
We’re getting closer to a future where plastic can be grown from agricultural leftovers instead of drilled from the ground.
This kind of one-step, waste-to-plastic biotechnology could eventually help close the loop on plastic production turning something we currently throw away into high-value, compostable materials. While scaling from flasks to industrial bioreactors is still a challenge, breakthroughs like this show that bio-based plastics are becoming not just possible, but increasingly practical and efficient.
The next generation of plastic might literally come from potatoes.
How close do you think we are to biodegradable plastics from agricultural waste becoming mainstream?
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