ABSTRACT
Single cell protein (SCP) is produced from many different microbial types, including algae, yeasts, filamentous fungi and bacteria. While algae have been extensively produced as SCP in practices that date back to ancient times by the people of Lake Chad in Africa and the Aztecs near Lake Texcoco in Mexico, this practice relates mainly to phototrophic organisms using sunlight and CO2 as the source of energy and carbon, respectively (Anupama and Ravindra, 2000). The most important organisms participating in the protein enrichment of horticultural wastes are fungi, yeasts and bacteria, which convert some of the carbon rich fractions of these wastes into microbial protein. Thus, the major substrates for these organisms are typically the different types of carbohydrates available in the wastes. Plant oils and fats can also represent an important substrate in some of the wastes.
