Table 3.
Total plate counts for the five potent L. plantarum isolates (L1−5) on MRS agars at different pH values of 1.5, 3.0, and 7.2 (control) over 1.5 h intervals.
| pH value | Isolate code | Total plate counts (log10 CFU/ml)a | ||
|---|---|---|---|---|
| 0 h | 1.5 h | 3.0 h | ||
| 1.5 | L1 | 9.55 ± 0.08b | 6.24 ± 0.54c | 5.19 ± 0.51d |
| L2 | 7.12 ± 0.05b | − | − | |
| L3 | 7.99 ± 0.23 | − | − | |
| L4 | 9.06 ± 0.06b | 4.52 ± 0.11c | 3.02 ± 0.07d | |
| L5 | 8.45 ± 0.14 | − | − | |
| 3 | L1 | 8.25 ± 0.11b | 8.03 ± 0.25c | 8.01 ± 1.02d |
| L2 | 7.22 ± 0.14b | − | − | |
| L3 | 7.75 ± 0.36b | 2.67 ± 0.79c | 1.27 ± 1.44d | |
| L4 | 9.32 ± 0.09b | 9.08 ± 0.87c | 9.02 ± 0.41d | |
| L5 | 6.17 ± 0.36b | 5.92 ± 0.25c | 4.56 ± 0.13d | |
| 7.2 | L1 | 8.44 ± 0.28b | 8.65 ± 047c | 8.89 ± 0.22d |
| L2 | 5.29 ± 0.77b | 5.11 ± 0.08c | 5.09 ± 0.74d | |
| L3 | 6.72 ± 0.89b | 6.67 ± 0.02c | 6.25 ± 0.44d | |
| L4 | 9.55 ± 0.03b | 9.71 ± 0.08c | 9.88 ± 0.05d | |
| L5 | 6.78 ± 0.33b | 6.84 ± 0.77c | 6.99 ± 0.07d | |
a
Each value in the table represents the mean value ± Standard Deviation (SD). Each data point is the average of two repeated measurements from 3 independently replicated experiments, n = 3.
b,c,d
Mean value with different superscripts in the same row differs significantly (P < 0.05).
−The hyphen symbol represents plate counts of <1 log10CFU/mL on the MRS agar plates.