Bioethanol production varied significantly between the sawdust
concentration and incubation period (h) and also their
interaction effects (Table 2). The maximum yield of 69.58%
bioethanol was recorded under the agitation speed of
360 rpm at 89 h of incubation (Fig. 2e).
Bioethanol production varied significantly with sawdust
concentration and agitation speed but not significantly with
interactive effect (Table 2). Statistically optimized condition
for the maximum yield of bioethanol production was analyzed
by the method of contour plotting (Fig. 2f). The maximum
yield of the bioethanol production reached to 69.58% under
the optimal conditions of temperature at 30 C, sawdust concentration
of 6.84 mg l1 under the agitation speed of
360 rpm in 89 h of incubation (Fig. 1d). The bioethanol productions
were experimentally performed by using statistically
optimized fermentation conditions. In that 72.5% of bioethanol
was produced by marine yeasts. It was 2.98% higher than
that in the statistically optimized condition. It revealed that the
statistical optimization was acceptable for the large scale production
of the bioethanol.