Researchers at Southern Illinois University Carbondale have developed protein-rich cookies made from recycled PET plastic bottles and corn stalk waste [1, 2].
This technology addresses three intersecting global challenges: the accumulation of plastic pollution, a looming food crisis, and the need for sustainable nutrition during long-duration space missions [1, 3].
The process utilizes engineered microbes and baker's yeast to convert plastic and agricultural waste into an edible format [1, 3]. The resulting product, named µBites, is a vanilla-flavored cookie that can be produced using 3D printing technology [1, 3].
By transforming non-biodegradable waste into a protein source, the team aims to create a circular food system [1, 4]. The researchers developed the cookies to be lightweight and nutrient-dense, making them a potential candidate for NASA deep-space missions where transporting fresh food is impractical [1, 4].
The use of PET plastic, the material commonly found in water and soda bottles, as a feedstock allows for the removal of pollutants from the environment while simultaneously creating a food supply [2, 3]. The addition of corn stalk waste further increases the sustainability of the production process by utilizing agricultural by-products [4].
While the project is currently in the research phase, the ability to print food from waste materials could fundamentally change how humans approach resource management on Earth and in space [1, 3].
“Engineered microbes and baker's yeast were used to convert PET plastic bottles and corn stalk waste into vanilla‑flavored cookies.”
The conversion of synthetic polymers into edible proteins represents a significant shift in biotechnology. If scalable, this process could reduce reliance on traditional agriculture for basic protein needs and turn plastic waste from a liability into a strategic asset for survival in extreme environments, such as Mars or deep-space transit.
