Alternative protein encompasses food and ingredient categories that replace or complement conventional animal-derived protein through plant-based, fermentation-derived, and cell-cultivated approaches. As a sector, alternative protein is motivated by environmental sustainability, animal‑welfare, and food‑security goals described by the Food and Agriculture Organization (FAO) and the Intergovernmental Panel on Climate Change (IPCC).
Plant‑based products typically use soy, pea, wheat, or other legumes to deliver protein analogs; fermentation methods include biomass 📝fermentation (e.g., mycoprotein) and precision fermentation to produce specific proteins such as whey or egg albumen; cultivated meat grows animal cells in bioreactors. Multiple life‑cycle assessments report lower greenhouse‑gas footprints for plant‑based meat than conventional meat, though results vary by product and system boundaries (e.g., Poore & Nemecek, 2018). Regulatory pathways are emerging: Singapore has authorized several cultivated meat products via the Singapore Food Agency, and in 2023 the U.S. Food and Drug Administration and U.S. Department of Agriculture cleared limited sales of cultivated chicken.
The 📝Good Food Institute provides industry overviews and market data. Key constraints include cost, consumer acceptance, ingredient functionality, and manufacturing capacity.