In a groundbreaking study published in Green Chemistry, researchers from King's College London and the Brazilian Biorenewables National Laboratory have devised a novel method to produce biofuels from food waste. By utilizing enzymes to convert fatty acids in cooking oils into alkenes, crucial components for fuels like gasoline and diesel, the team has introduced a sustainable alternative that could reduce reliance on fossil fuels and decrease greenhouse gas emissions significantly. This innovative process, reported to be 1000 times more efficient than current techniques, addresses the inefficiencies and high oxygen content often associated with biofuels, making them a promising substitute for conventional combustion engine fuels. Despite the higher production costs compared to fossil fuels, the potential environmental benefits of biofuels are substantial. The researchers modified an enzyme called P450 decarboxylase to enhance the breakdown of fatty acids, resulting in a more effective fuel with increased alkene yield. By submerging the altered enzyme in liquid salt and exposing it to UV light, they achieved a significantly higher yield of alkenes, surpassing what is feasible in water. Moreover, this approach eliminates the need for traditional catalysts like platinum and avoids the use of harmful substances such as hydrogen peroxide, contributing to a more sustainable fuel production process. The researchers envision expanding this technology to produce a variety of fuels, including those for the aviation sector, and foresee potential applications in other industries like pharmaceuticals. The study's findings offer a promising step towards addressing climate change by providing a renewable and efficient fuel source from food waste, highlighting the potential for a greener future.