Table 2.
Change in the amount of organic acid in Makgeolli dur ing storage at 4°C and 25°C
Contents of organic acid (mg/mL)1) |
| | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
4°C | 0 | 0.32±0.07b2) | 0.88±0.09ab | 0.36±0.08ND | 0.39±0.08b | 4.16±1.32b | 0.61±0.13b | 0.009±0.002ND | 0.98±0.21bc | ND |
4 | 0.30±0.05b | 0.80±0.12b | 0.20±0.06 | 0.38±0.09b | 3.77±1.05b | 0.51±0.11c | 0.008±0.001 | 0.81±0.15c | 0.26±0.07ND |
8 | 0.32±0.07b | 0.86±0.21ab | 0.41±0.07 | 0.40±0.12 | 3.77±0.09b | 0.50±0.08c | 0.007±0.001 | 0.71±0.11c | 0.08±0.01 |
12 | 0.31±0.04b | 0.84±0.11ab | 0.39±0.04 | 0.39±0.06b | 3.85±1.14b | 0.52±1.21c | 0.007±0.001 | 0.72±0.06c | 0.08±0.01 |
16 | 0.35±0.04ab | 0.95±0.17a | 0.48±0.09 | 0.59±0.14a | 3.74±1.10b | 0.56±0.09b | 0.008±0.001 | 0.78±0.14c | 0.42±0.13 |
20 | 0.36±0.09ab | 0.98±0.115a | 0.55±0.12 | 0.46±0.11ab | 3.51±0.08b | 0.54±0.11b | 0.008±0.002 | 0.87±0.20bc | 1.43±0.08 |
25°C |
0 | 0.35±0.04ab | 0.92±0.18a | 0.09±0.02 | 0.58±0.13a | 2.18±0.57c | 0.42±0.08c | 0.007±0.001 | 0.92±0.13bc | 0.17±0.02 |
4 | 0.42±0.08a | 0.006±0.001c | 0.009±0.002 | 0.12±0.02c | 5.29±1.33b | 0.57±0.11b | ND | 1.17±2.11bc | 1.58±0.33 |
8 | 0.43±0.05a | 0.001±0.000c | 0.01±0.003 | 0.16±0.04 | 8.17±1.72ab | 0.80±0.15ab | ND | 1.65±0.35b | 2.35±0.82 |
12 | 0.47±0.06a | 0.002±0.000c | 0.01±0.002 | 0.19±0.02c | 10.0±1.94ab | 0.74±0.07ab | ND | 2.18±0.47ab | 2.85±0.17 |
16 | 0.45±0.05a | 0.002±0.000c | 0.008±0.001 | 0.19±0.04c | 12.8±2.34ab | 1.16±0.20a | ND | 2.62±0.67a | 3.34±1.07 |
20 | 0.46±0.04a | 0.002±0.000c | 0.009±0.002 | 0.17±0.02c | 19.9±3.65a | 0.49±0.08c | ND | 2.89±0.18a | 3.62±0.08 |
1, oxalic acid; 2, citric acid; 3, tartarric acid; 4, malic acid; 5, lactic acid; 6, acetic acid; 7, fumaric acid; 8, isobutyric acid; 9, butyric acid.
Values were expressed as the mean±SD (n=3). ND, not detected.