single cell protein (SCP)

Microbial biomass or proteins extracted therefrom obtained from processes in which bacteria, yeasts, other fungi or algae are cultivated in large quantities as human or animal protein supplement in animal feed or in human nutrition.
Source:
PAC, 1992, 64, 143 (Glossary for chemists of terms used in biotechnology (IUPAC Recommendations 1992)) on page 166