Overview
- The Southern Illinois University Carbondale team publicly demonstrated µBites at the American Chemical Society Fall 2026 meeting in Chicago on Monday, showing a full pipeline from plastic and biomass to a 3D‑printed cookie.
- The process uses oxidative hydrothermal dissolution to break PET and plant waste into a liquid feedstock that engineered yeast strains convert into proteins, fats, vitamins and flavor molecules before 3D printing.
- Lab work and accredited third‑party analyses reported no detected toxic chemicals, heavy metals, allergens or pathogens, but the researchers are awaiting institutional approval to begin human taste tests.
- Prototype performance remains constrained by a complex ~32–33 step workflow, roughly 50%+ carbon conversion with about 10% unconverted or released, 1–2 days of processing and an estimated cost near $60 per kilogram, and the team is pursuing strain and process improvements and microgravity tests.
- Researchers frame µBites as a niche, on‑demand option for resource‑limited settings such as space missions, submarines and disaster relief, while independent experts warn the method is not a scalable fix for the global plastic‑waste problem.