When organic substrates are fermented, such as agroindustrial
residues like sugarcane molasses [3], wheat stillage
[4], fish residues [5], pineapple waste [6], among others,
carbon sources can be converted into ethanol, an important
and well known biofuel [7]. This strongly helps solving an
environmental problem related to residues treatment and
disposal and also helps to aggregate value to an agroindustrial
residue as long as to decrease the costs with the
substrates for the fermentation.