Researchers Have Created Plastic-Free Vegan Leather Grown from Bacteria

For years, the fashion industry has grappled with the environmental repercussions of synthetic chemical dyeing, particularly with leather production. These toxic processes have left a huge mark on our planet. To solve this issue, researchers at Imperial College London are creating genetically engineered bacteria to cultivate animal- and plastic-free leather that dyes itself.

Their pioneering work, detailed in the journal Nature Biotechnology, unveils a remarkable process wherein bacteria not only grow a leather-like material but also imbue it with its own pigment. This self-dyeing vegan leather, devoid of plastic and animal derivatives, signifies a significant stride towards a more sustainable future in fashion.

Lead author Professor Tom Ellis said, “Inventing a new, faster way to produce sustainable, self-dyed leather alternatives is a major achievement for synthetic biology and sustainable fashion”. By leveraging bacterial cellulose, inherently vegan and cultivated with minimal carbon emissions and resource utilization compared to traditional leather farming, they’ve charted a course towards greener pastures for the industry.

Collaborating closely with designers, the researchers fashioned prototypes including shoes and wallets, demonstrating the viability of their bacterial cellulose-based leather alternatives. Moreover, they’ve unlocked the potential for a spectrum of vibrant hues and patterns, envisioning a future where textiles like cotton and cashmere could undergo a similar transformation.

Looking ahead, the researchers are exploring an array of colored pigments, aiming to further diversify the possibilities offered by their microbial marvel. Bolstered by a £2 million grant from the Biotechnology and Biological Sciences Research Council, they’re poised to tackle additional challenges plaguing the fashion industry, such as the elimination of toxic chromium in leather production.

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