REKAYASA BIOPROSES PRODUKSI BIOETANOL DARI UBI KAYU DENGAN TEKNIK KO-KULTUR RAGI TAPE DAN SACCHAROMYCES CEREVISIAE
ABSTRACT: The purpose of this
study is to get an alternative bioprocess technology of bioethanol production
from cassava using the technique of co-cultured “tape” yeast and Saccharomyces cerevisiae.
The study was designed with a completely randomized design experiment using 7 level
of co-culture techniques. All treatment was repeated 2 times. The parameters measured
were the final pH, percentage of substrate consumption, ethanol concentration
and fermentation efficiency. Using coculture technique in the process of
fermentation to produce bioethanol gives better results than the use of a
single culture or pure culture of “tape” yeast and S. cerevisiae. Coculture
technique that gives the best results is the treatmentof fermentation process
by giving the “tape” yeast to the first day and followed by giving culture S.
cerevisiae for the next two days. This treatment has a final pH 4:05, the
percentage substrate or glucose consumption of 82.92%, the concentration
ethanol of 11.0% (w/v) and the fermentation efficiency of 52.94%.
Penulis: IWayan Arnata, A A M
Dewi Anggreni
Kode Jurnal: jppertaniandd130534
