Bioplastic Production from simulated 100% in situ Mars resources
A sustained human presence on Mars requires local production of bulk materials, particularly polymers. Prior approaches to space biomanufacturing rely on human waste streams, Earth-sourced consumables, or complex chemical infrastructure, limiting their ability to scale. Here we demonstrate production of polyhydroxyalkanoate (PHA) bioplastic from simulated 100% martian resources: regolith-derived…
To establish a sustainable human presence on Mars, the production of essential materials locally is crucial. Traditional methods for biomanufacturing in space often depend on human waste, supplies from Earth, or intricate chemical systems, which hinder scalability. In this study, researchers showcase the production of polyhydroxyalkanoate (PHA) bioplastic using only materials available on Mars itself.
They simulate 100% Martian resources, including regolith-derived nutrients, acetate extracted from the planet's atmosphere via electrochemistry, and water. By screening 16 potential organisms suitable for growth in a chemically defined Mars environment, the scientists pinpoint two bacteria - Cupriavidus necator H16 and Pseudomonas putida KT2440 - as promising candidates for bioplastic production.
Through adaptive laboratory evolution spanning over 10 trillion cell divisions, they enhance both species' resilience to high acetate and leached regolith concentrations. The most evolved strain of Cupriavidus necator, known as sPL.001, demonstrates an impressive capacity to generate more than three times the amount of PHA under simulated Martian conditions compared to its original strain.
This breakthrough in producing bioplastics solely from local Martian resources eliminates the need for Earth-based supply chains, paving the way for self-sustaining material production on the Red Planet.
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