Table 2 shows that the optimum concentration of HCl in the hydrolysis process was at 1.5 N. The optimum
temperature hydrolysis was at 900C (Table 3), whereas for the optimum hydrolysis time was 70 minutes (can be
seen at Table 4).
After the three of analysis are done, the process was followed by analysis to determine glucose content
before hydrolysis and determination of glucose fermentation for optimum conditions, i.e. concentration of 1.5 N
HCl, 90oC temperature, and time of 70 minutes. The results showed that glucose content before hydrolysis was
1.65% and glucose for fermentation is 82.24%.
The analysis was then followed by the manufacture of fermented solution. This solution was then fermented
with yeast for 1 to 6 days. Bioethanol results have been obtained from a solution that has been fermented and then
distilled. Then the ethanol content of banana flour was known based on testing with a refractometer and gas
chromatography. The test results showed that the fermentation time 5 (five) days to have the highest levels of
ethanol 24% (see Table 5).