Edible Plastic Cookies

Introduction To Edible Plastic

Engineers at Southern Illinois University Carbondale have developed a process to convert plastic waste into edible cookies, potentially providing a solution to both plastic pollution and food scarcity. The team, led by microbiologist Lahiru Jayakody, uses genetically engineered yeast to break down polyethylene terephthalate (PET), a common plastic found in bottles, into usable ingredients.

The Process Of Conversion

The process begins with the collection of used plastic bottles and agricultural waste, such as corn stalks and leaves. These materials are then subjected to oxidative hydrothermal dissolution, a process that uses heat to break down the components into a form that can be digested by microbes. The resulting mixture is then fed to genetically engineered yeast, which converts the components into proteins, fats, acids, and other useful ingredients, including vanilla flavoring and beta-carotene. The final product is a paste that can be extruded through a 3D printer to create cookies, dubbed µBites.

Potential Applications And Benefits

The potential applications of this technology are vast, with the possibility of providing a sustainable source of food in resource-restricted environments, such as submarines and space missions. The team has received funding from NASA's Deep Space Food Challenge, and Jayakody envisions a future where µBites and similar upcycled foods become a valuable menu item in these environments. Additionally, the technology could help address the growing problem of food scarcity, with global food demand expected to rise by 56% by 2050.

Challenges And Criticisms

However, the concept faces several challenges, including the stigma associated with genetic engineering and the potential concern about microplastics in the environment. Jason Hallett, a researcher at Imperial College London, has expressed skepticism about the practicality of the technology, citing the sheer volume of plastic waste produced each year and the logistical challenges of collecting and processing it. Hallett argues that recycling through existing processes is a more viable solution to the plastic crisis.

Future Outlook And Implications

Despite these challenges, the team remains optimistic about the potential of their technology to inspire innovative solutions to the problem of plastic waste. Jayakody estimates that it will take 20 years of additional research to develop a process that can convert plastic waste into safe and appetizing food, but he hopes that the concept will lead to a "social shift" in the way people think about plastic waste. As the world grapples with the growing problems of plastic pollution and food scarcity, technologies like this may play a crucial role in finding sustainable solutions.

Conclusion And Next Steps

In conclusion, the development of edible plastic cookies is a promising technology that could provide a sustainable solution to both plastic pollution and food scarcity. While there are challenges and criticisms to be addressed, the potential benefits of this technology make it an exciting area of research. As the team awaits institutional approval to begin taste tests, they continue to work on refining their process and exploring new applications for their technology. With further research and development, µBites and similar upcycled foods could become a valuable tool in the fight against plastic waste and food insecurity.

Sources

This is an original synthesis by Qivorane based on reporting from the outlets below.