Table 4. The quality properties of bottom-fermented beers (lager)
| pH | Total acid (%, citric acid) | Amino acidity (mL/10 mL) | Reducing sugar (%) | Soluble solid (°Brix) | Alcohol (%) | Volatile acid (mg/L) | Color (EBC) |
1 | 4.07±0.011)f2) | 0.14±0.00b | 0.62±0.04h | 0.08±0.00h | 4.57±0.06j | 4.27±0.06de | 75.47±0.92b | 8.03±0.68e |
2 | 4.27±0.02d | 0.10±0.01e | 0.52±0.01i | 0.12±0.00cd | 5.60±0.00e | 4.13±0.06ef | 59.53±1.51d | 6.69±0.08g |
3 | 4.24±0.02d | 0.10±0.00ef | 0.65±0.05gh | 0.11±0.00e | 5.37±0.06f | 4.20±0.00de | 54.60±2.12e | 6.14±0.18h |
4 | 4.15±0.02e | 0.11±0.01d | 0.37±0.01j | 0.14±0.00a | 5.77±0.06c | 3.83±0.12g | 78.87±2.14a | 11.79±0.13a |
5 | 4.49±0.03a | 0.15±0.00a | 1.17±0.01b | 0.12±0.00bc | 6.37±0.06a | 5.20±0.10a | 66.93±0.83c | 9.43±0.35c |
6 | 4.40±0.03c | 0.15±0.01a | 1.03±0.01c | 0.10±0.00g | 5.20±0.00h | 4.43±0.06cd | 32.80±0.40h | 5.48±0.48i |
7 | 4.37±0.01c | 0.13±0.01c | 0.95±0.04d | 0.15±0.00a | 5.80±0.00c | 3.90±0.10fg | 43.47±0.61g | 7.14±0.09fg |
8 | 4.44±0.01b | 0.15±0.00a | 1.45±0.04a | 0.12±0.00b | 6.37±0.06a | 4.73±0.15b | 67.27±1.17c | 10.60±0.13b |
9 | 4.47±0.02ab | 0.15±0.00a | 0.84±0.03e | 0.12±0.00d | 5.90±0.00b | 4.33±0.06de | 50.60±2.78f | 7.23±0.10f |
10 | 4.18±0.01e | 0.11±0.01d | 0.56±0.02i | 0.10±0.00g | 5.30±0.00g | 4.63±0.29bc | 43.20±0.80g | 8.05±0.17e |
11 | 4.38±0.02c | 0.10±0.01ef | 0.69±0.03g | 0.10±0.00g | 5.10±0.00i | 3.80±0.26g | 33.53±1.17h | 6.04±0.04h |
12 | 4.44±0.02b | 0.12±0.00d | 0.74±0.03f | 0.11±0.00f | 5.70±0.00d | 4.07±0.15efg | 65.40±1.44c | 8.64±0.09d |
13 | 4.06±0.03f | 0.10±0.00f | 0.27±0.03k | 0.11±0.00ef | 4.13±0.06k | 5.07±0.25a | 75.80±1.25b | 10.52±0.14b |
All values are mean±standard deviation (n=3).
Means in a row by different superscripts are significantly different at 5% significance level by Duncan’s multiple range test.