What they do.
Mara Bio operates a proprietary fermentation platform that converts food-industry by-products into functional proteins. Streams that the food industry currently treats as low-value waste become high-value protein inputs for human and animal nutrition. The process uses standard fermentation infrastructure with the company's proprietary strains and feed formulations.
The platform is feedstock-flexible. Multiple waste streams from dairy, brewing, and other food-processing industries can be processed into proteins matching defined specifications.
Why it matters.
Global protein demand is growing structurally. Conventional supply, including livestock and aquaculture, faces land, water, and emissions constraints. Alternative proteins are projected to reach hundreds of billions of dollars in market value over the next decade. Fermentation-derived proteins are among the more credible scalable pathways.
The circular-economy dimension is the structural advantage. By using existing food-industry waste streams as feedstock, Mara Bio sidesteps the land-and-water cost that other alternative-protein producers face. Inputs are cheap, available, and the diversion-from-waste claim is verifiable.
Where they are now.
- $1 million seed round closed in 2025, with K1W1 investing alongside Climate Fund.
- Strain library and process optimisation underway.
- Early customer engagement with food and aquaculture protein buyers.
- Capital deployment supports strain development, pilot-scale fermentation, and first customer trials.
The CVCF investment.
Climate Fund 1 backed Mara Bio at seed stage, alongside K1W1. The thesis: alternative protein producers that can secure feedstock at near-zero cost win the unit-economics race. Mara Bio's platform turns a waste-disposal cost into a feedstock input, structurally advantaging the cost stack.
Mara Bio passed the Climate Impact Committee's IRIS+ review. Each tonne of protein produced displaces a measurable quantity of conventional protein and the embedded land, water, and emissions intensity.