Microbial biotechnology has a long history of producing feeds and foods. The key feature of
today's market economy is that protein production by conventional agriculture based food
supply chains is becoming a major issue in terms of global environmental pollution such as
diffuse nutrient and greenhouse gas emissions, land use and water footprint. Time has come
to re‐assess the current potentials of producing protein‐rich feed or food additives in the
form of algae, yeasts, fungi and plain bacterial cellular biomass, producible with a lower …