Bioetanol from cassava
Abtract
Cassava (Manihot
utilisima) is one of raw material to produce bioethanol that
contain starch and
fiber. This study aimed at increasing the yield of ethanol
concentration from
cassava by simultaneous saccharification and fermetation through
mixed cultureT.
viride, A. niger and S. cerevisiae. The experiments were
performed in
bacth system and
fermentation process maintained for 96 hours.. The separated
hydrolysis
fermentation process was using enzyme hydrolisate and the addition
of
monocultureS.
cerevisiae. Observations during the fermentation process included
changes in the total
sugar concentration, pH and the ethanol concentration. Result of
this research,
Ethanol concentration with simultaneous saccharification fermetation
through mixed cultureT.
viride, A. niger and S. cerevisiae was 7.41 ± 1.79 % (w/v),
higher 38.29 % than
the ethanol concentration with the separated hydrolysis
fermentation with
monoculture S. cerevisiae.
Keywords: Bioethanol, cassava, mixed culture
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