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. 2023 Mar 30;9(4):e15031. doi: 10.1016/j.heliyon.2023.e15031

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.