Edinburgh Scientists Turn Plastic Bottles into L-DOPA

Scientists at the University of Edinburgh have developed a pioneering method to produce L-DOPA, a key medication for Parkinson's disease, from discarded plastic bottles, marking the first use of a biological process to convert plastic waste into a treatment for a neurological condition.

The technique relies on engineered Escherichia coli bacteria to transform polyethylene terephthalate, or PET, the common plastic in food and beverage packaging, into the therapeutic compound. PET waste totals around 50 million tonnes annually worldwide. In the process, the plastic is first broken down into terephthalic acid, its basic chemical components. The bacteria then convert molecules of this acid into L-DOPA through a series of enzymatic reactions. Researchers emphasize that this approach is more environmentally friendly than conventional pharmaceutical production, which depends on fossil fuels.

Led by Professor Stephen Wallace, the team conducted the work at the university's CarbonLoop Sustainable Biomanufacturing Hub, a facility dedicated to converting industrial waste into sustainable chemicals and materials. The findings, published in the journal Nature Sustainability, highlight the...