# Gas fermentation of food protein

Contract manufacturing (CMO/CDMO/toll) — Microbial food protein grown by feeding hydrogen-oxidising bacteria a mix of hydrogen, CO2 and oxygen in gas-loop bioreactors — a land-free 'food from air' route now at commercial demonstration scale.

Source: https://en.bioecon.ru/market/contract-manufacturing/gas-fermentation-food-protein/