Based on the previous results of immobilized yeast strain in ethanol fermentation, immobilized yeast
strain C in white glutinous rice flour was chosen for the further experiment to investigate time profile of
alcohol formation during fermentation. The time profile of alcohol fermentation is presented in Fig. 2.
The time profile of glucose consumption and ethanol formation during fermentation process (Fig. 2.)
shows the glucose concentration gradually decreased during the fermentation process from 10 %
concentration in the initial reaction and completely consumed during 48 hours. Meanwhile, the ethanol
production reached 5.4% v/v during 48 hours fermentation time and relatively stable until the end
fermentation period at 72 hours.
Furthermore, pH condition and the number of viable cells during the fermentation process are
summarized in Table 2.