| Summary: | 碩士 === 大葉大學 === 食品工程研究所 === 82 === Kinetics of ethanol fermentation using self-aggregating
Saccharomyces uvarum U4, that forms stable aggregates (
about 3mm in diameter), over temperature range of 25-43℃.
Significant substrate inhibition was observed when sugar
concentration was higher than 300 g/L, and the substrate
inhibition constant was not strongly affected by
temperature. The maximum ethanol concentration, for
ethanol production, was found to decrease with increasing
temperature. Similar pattern was observed for growth
kinetics.Optimal temperatures for growth and fermentation were
found to be in the neighborrhood of 35℃. The effectiveness
factor of the aggregates was found to be strongly dependent
on sugar concentration and temperature. The fermentation
kinetic model and growth kinetic model were coupled and
integrated, and was found to be in good agreement with
experimental data over the temperature range studied.
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