In this study, we investigated the effect of bananas on improving of sluggish blueberry wine fermentation.
The alcoholic fermentation was carried out with yeast extract, diammonium phosphate, or 2%, 4%,
and 6% banana. The number of viable yeast cells gradually decreased during fermentation and the
population stabilized at approximately 104 cfu/ml by the end of fermentation. The average ethanol
production rate was 1.32e1.68 times faster according to the addition of banana during 20 days of
fermentation. The sugar consumption rate (Brix/day) was increased 1.30, 1.49 and 1.63-fold by 2%, 4%
and 6% of banana addition, respectively. The wines supplemented with 4% and 6% banana contained
61.7 mg/l and 60.8 mg/l of ethyl carbamate, respectively, which was higher than that with 2% banana
(54.5 mg/l). Thus, we concluded that 2% banana can be used as a nutritional supplement for yeast to
resolve stuck and sluggish blueberry wine fermentation.