2.2.4. Measuring sugar content
The Brix method was used to measure the sugar content of each
sample. Using optimum conditions, hydrolysis was carried out for
the remaining two samples containing 20 g banana peel powder.
Once again the lignin was removed from the soluble portion, and
the remaining soluble solution was added into the previously
separated soluble portions. The residue and remaining samples
were discarded. Finally, these two samples were used to produce
ethanol from banana peels by Saccharomyces cerevisiae [7].