PRODUKSI BIOETANOL DARI KULIT PISANG MELALUI HIDROLISIS ASAM SULFAT
ABSTRACT: Banana fruit is one
of main product of Lampung Province. Banana is commonly utilized as raw
material of banana chip production and its peel can be converted into
bioethanol. The Objectives of this study were to find out the optimum
treatments of hydrolysis and fermentation
for producing bioetanol. Two steps,
namely hydrolysis and fermentations,
were carried out in this study. In the hydrolysis step, two treatments - H2SO4
consentration and hydrolysis duration – were implemented. The H2SO4 concentration treatment consisted
of five level (0, 0.025, 0.050, 0.075, and 0,100 M); and the hydrolysis period
treatment consisted of two level (15 dan 30 minutes). Bioethanol fermentation
was carried out at room temperature for 72 hours with Saccharomyces cerevisiae
as starter at concentration of 0%, 5%, 10%, and 15% (w/v). The treatments were arranged in Randomized
Complete Block Design (RCBD) with three replications. Before and after hydrolysis, the cellulose,
hemicellulose, and lignin contents of
banana peel were determined. The reducing sugar concentrations were
measured after hydrolysis, and bioethanol concentrations were measured after
fermentation. The data of the cellulose,
hemicellulose, lignin, reduced sugar, and bioethanol were tabulated and
analyzed descriptively. The results of
this study showed that the optimum treatment for hydrolysis was H2SO4 solution
at a concentration of 0.050 M at 1210C for 15 minutes. The treatment yielded reduced sugar at a
concentration of 11,26mg/100 mL. The
optimum treatment for fermentation was a starter concentration of 10% (w/v)
which produced bioethanol at a concentration of 0.03% (v/v).
Penulis: Asih Sukowati
Sutikno, Samsul Rizal
Kode Jurnal: jppertaniandd140115
