Regarding the pH, the results are analogous. The best
average of ethanol production was found at pH 6.5 (27.65 g.L-1),
and this result is better (at p ¼ 0.05) than those obtained when
the pH was 5.0 (20.07 g.L-1) and 8.0 (20.59 g.L-1). Moreover, the
last two results are not different between themselves at
p ¼ 0.05