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Table IV.
Changes in the mean values (†SD) of pH, titratable acidity and counts of E. coli O157:H7 and indigenous LAB during processing of traditional Madila at 30 °C.
| LP treatment | Time (days) | E. coli O157:H7 (log cfu·mL−1) | Lactococcus (log cfu·mL−1) | Lactobacillus and Leuconostoc (log cfu·mL−1) | pH | Titratable acidity (%) |
|---|---|---|---|---|---|---|
| No LP | 0 | 6.95 (†0.08) | 6.68 (0.19) | 7.30 (0.19) | 6.35 (0.08) | 0.17 (0.01) |
| 1 | 7.23 (0.73) | 9.13 (0.16) | 9.28 (0.04) | 4.19 (0.08) | 0.75 (0.00) | |
| 2 | 4.39 (0.79) | 8.55 (0.16) | 8.77 (0.40) | 4.19 (0.12) | 0.77 (0.03) | |
| 3 | 3.43 (0.33) | 8.51 (0.16) | 8.90 (0.22) | 4.36 (0.04) | 0.73 (0.01) | |
| 4 | 3.89 (0.15) | 8.44 (0.10) | 8.84 (0.23) | 4.09 (0.04) | 0.96 (0.04) | |
| 5 | 4.25 (1.15) | 7.35 (0.59) | 7.30 (0.52) | 3.92 (0.05) | 1.17 (0.05) | |
| LP | 0 | 6.95 (0.07) | 6.67 (0.11) | 7.21 (0.12) | 6.44 (0.02) | 0.16 (0.01) |
| 1 | 7.27 (0.75) | 9.03 (0.13) | 9.13 (0.15) | 4.22 (0.08) | 0.77 (0.05) | |
| 2 | 4.85 (0.38) | 8.49 (0.18) | 8.45 (0.17) | 4.11 (0.04) | 0.73 (0.03) | |
| 3 | 3.75 (0.19) | 8.28 (0.17) | 8.61 (0.19) | 4.33 (0.12) | 0.71 (0.05) | |
| 4 | 2.76 (0.22) | 8.33 (0.17) | 8.40 (0.24) | 3.97 (0.10) | 1.09 (0.08) | |
| 5 | 0.52 (0.52) | 7.44 (0.42) | 7.48 (0.37) | 3.79 (0.08) | 1.35 (0.03) | |
| P (LP) | 0.052 | 0.636 | 0.243 | 0.382 | 0.062 | |
| P (LP vs. time) | 0.010 | 0.993 | 0.884 | 0.625 | 0.043 | |
| N | 3 | |||||