3.4. Influence of temperature
The behavior of the strains A2, A10, and A11 at different temperatures (see Fig. 5) showed that although high concentrations of ethanol were reached at 25 and 28 C, the highest concentrationwas achieved when incubation was carried out at 30 C, meanwhile at 35 C the strains produced lower ethanol concentrations. These results showed that strains were highly sensitive to changes in temperature being 30 C the optimal temperature for the production of ethanol for the three strains. These results are in agreement with the studies reported by Zabed et al. [27] who postulated that it
is generally believed that the ideal fermentation temperature range is between 20 and 35 C, meanwhile certain problems derived from
the use of higher temperatures in almost all fermentation processes.