1st fermentation step | 2nd fermentation step | 3rd fermentation step | ||||
---|---|---|---|---|---|---|
Fermentation periods (days) | 0 | 2 | 0 | 2 | 0 | 2 |
Alcohol contents (%) | - | 15.00±0.20e | 5.00±0.10a | 10.00±0.30c | 7.00±0.10b | 13.00±0.20d |
pH | 6.67±0.26c | 4.70±0.07b | 6.70±0.41c | 3.77±0.01a | 3.98±0.02a | 3.86±0.02a |
Acidity (%) | 0.16±0.01a | 0.38±0.05b | 0.17±0.03a | 0.87±0.02d | 0.64±0.02c | 0.69±0.03c |
Reducing sugar (g/100 g) | 3.36±0.03e | 1.26±0.02b | 3.52±0.14f | 2.23±0.04d | 1.95±0.04c | 0.82±0.02a |