The sweet treat of the future could be plastic. Scientists have found a way to transform plastic waste, along with food additives and other ingredients, into edible cookies called µBites. The method could be used to manage refuse and provide sustenance in remote or disaster locations, or even in space someday. However, many people are understandably wary about eating plastic.
Polyethylene terephthalate (PET) from plastic bottles and “discarded sweet corn plant stalks and leaves” were put through a process called “oxidative hydrothermal dissolution,” which “uses heat to break down the materials into components that microbes can digest,” said New Scientist. The components are “fed to yeast that has been genetically altered,” allowing it to “convert the components into a variety of useful ingredients.” Then “fiber, starch and sweetener are added, and the paste is extruded through a 3D printer into any desired shape.”
This may nibble around the edges of the problem, but “we produce 400 million tons a year of plastic waste,” Jason Hallett, a professor and researcher at Imperial College London, told New Scientist. It’s “not a solution to the plastic-waste crisis.”
But becoming a mainstream treat isn’t the primary goal. The “µBites system is a tunable and portable device that integrates all necessary components” to be “deployed in submarines or disaster relief vehicles to produce on-demand, on-site food,” said Lahiru Jayakody, a Southern Illinois University Carbondale microbiologist who worked on the product, to ScienceAlert. The process is “particularly suited for using carbon waste in extreme environments such as deserts, the Arctic or the Antarctic,” and potentially even “Mars or the lunar surface.”
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