Table 1.
Changes in pH and titratable acidity (TA) during the fermentation of non-vegan and vegan kimchi at 0 °C and 6 °C.
Temperature/days | Non-vegan kimchi |
Vegan kimchi |
|||
---|---|---|---|---|---|
pH | TA (%) | pH | TA (%) | ||
0 °C | 0 | 5.81 ± 0.02a | 0.35 ± 0.01a | 5.79 ± 0.02a | 0.30 ± 0.01a |
3 | 5.65 ± 0.00b | 0.38 ± 0.01a | 5.41 ± 0.01b | 0.34 ± 0.02 ab | |
6 | 5.63 ± 0.03b | 0.43 ± 0.01b | 5.23 ± 0.01c | 0.55 ± 0.01b | |
10 | 4.95 ± 0.00c | 0.52 ± 0.02bc | 4.79 ± 0.01d | 0.61 ± 0.01bc | |
14 | 4.76 ± 0.03c | 0.80 ± 0.02c | 4.57 ± 0.01de | 0.67 ± 0.01c | |
18 | 4.55 ± 0.01cd | 0.85 ± 0.01c | 4.44 ± 0.04e | 0.79 ± 0.03d | |
24 | 4.31 ± 0.03d | 1.12 ± 0.06d | 4.30 ± 0.01e | 1.03 ± 0.01e | |
6 °C | 0 | 5.81 ± 0.02a | 0.35 ± 0.01a | 5.79 ± 0.02a | 0.30 ± 0.01a |
3 | 5.76 ± 0.02b | 0.42 ± 0.03a | 5.38 ± 0.01b | 0.37 ± 0.02a | |
6 | 4.75 ± 0.03b | 0.68 ± 0.03b | 4.54 ± 0.02c | 0.76 ± 0.01b | |
10 | 4.42 ± 0.01c | 0.89 ± 0.02c | 4.11 ± 0.01d | 1.08 ± 0.01c | |
14 | 4.12 ± 0.01d | 1.26 ± 0.01d | 4.05 ± 0.06d | 1.25 ± 0.06d | |
18 | 4.11 ± 0.01d | 1.34 ± 0.02e | 4.03 ± 0.02d | 1.26 ± 0.01d | |
24 | 4.02 ± 0.04e | 1.37 ± 0.04e | 3.97 ± 0.02e | 1.39 ± 0.01e |
Kimchi samples were contaminated with Yersinia enterocolitica (6.05 log10 ± 0.25 CFU/g).
Different letters in the same column are significantly different at P < 0.05.