A team of researchers has engineered yeast to convert plastic and discarded plant material into a protein-rich cookie, potentially helping tackle both the global food shortage and plastic waste crises.
- Yeast engineered to digest plastic and agricultural waste
- Produces protein-rich, potentially tasty cookies
- Could help feed future populations and reduce pollution
What happened
Researchers funded by NASA presented their groundbreaking work at the Fall Meeting of the American Chemical Society, where they demonstrated a new approach to converting plastic and agricultural waste into food. By genetically modifying yeast strains, the team created microbes capable of breaking down degraded polyethylene terephthalate (PET) plastic and plant leftovers into nutritious compounds usable as human food.
These engineered yeast strains process a mixture of plastic, corn stalks, and other organic materials, producing flavor and nutrients such as vanillin for taste and the vitamin A precursor β-carotene. The final product is a protein- and fat-rich mash that can be turned into bite-sized snacks, named µBites, with the added help of 3D printing technology.
Why it feels good
This innovation addresses two pressing challenges: the escalating environmental threat of plastic waste and the urgent need to increase food production for a growing global population expected to surge by as much as 56% by 2050. Using microbes to recycle carbon from plastic into edible food represents a creative and sustainable approach to resource management.
Moreover, this development holds promise beyond Earth. As space exploration advances, there will be a demand for efficient food sources for off-world colonies. Engineered microbes capable of converting inedible materials into nutritious food could become a key technology in sustaining life in harsh extraterrestrial environments.
What to enjoy or watch next
While the cookies are not yet approved for human consumption, ongoing research and regulatory review will determine their safety and potential for broader use. This area of food technology is rapidly evolving, with many exciting possibilities on the horizon for sustainable and novel food sources.
Future developments to watch include scaling the collection and processing of plastic waste for use in food production, improving the efficiency of microbial transformations, and exploring consumer acceptance for foods derived from unconventional origins. Keeping an eye on NASA’s and other scientific teams’ progress in bio-engineered foods will reveal how close this concept comes to mainstream reality.