Yeast and fungi are microorganisms commonly used in
feedstuff fermentation processes. In previous studies, the
fermentation of cassava with Saccharomyces cerevisiae and
Aspergillus niger (A. niger) was found to increase the protein
content from 44 to 109 g/kg, and 44 to 122 g/kg, respectively
(Oboh et al., 2002; Oboh and Akindahunsi, 2003)