Table 3.
Reduction of spiked aflatoxins B1, B2, G1, and G2 after 24 h of incubation of kwete base. Values are means and standard deviations of analyses from three independent experiments. * Counts were performed by use of selective de Man, Rogosa, Sharpe (MRS) nutrient agar plates and indicate numbers for L. rhamnosus yoba 2012.
| Experimental Runs | Initial pH | Final pH | Initial Counts * (log cfu g−1) |
Final Counts * (log cfu g−1) |
Aflatoxin Concentration (ng mL−1) | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| B1 | B2 | G1 | G2 | Total | ||||||
| Controls | no spike, no starter | 6.3 ± 0.1 | 6.3 ± 0.1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| no spike, starter | 6.3 ± 0.3 | 4.2 ± 0.1 | 6.5 ± 0.2 | 9.4 ± 0.3 | 0 | 0 | 0 | 0 | 0 | |
| spike (t = 0 h), no starter | 6.3 ± 0.0 | 6.1± 0.3 | 0 | 0 | 2.4 ± 0.1 | 1.1 ± 0.0 | 2.4 ± 0.1 | 1.1 ± 0.0 | 7.0 | |
| spike (t = 0 h), lactic acid, no starter | 6.3 ± 0.1 | 4.4 ± 0.2 | 0 | 0 | 2.4 ± 0.1 | 1.1 ± 0.0 | 2.4 ± 0.1 | 1.0 ± 0.5 | 6.9 | |
| spike (t = 24 h), starter | 6.3 ± 0.5 | 3.9 ± 0.2 | 6.2 ± 0.4 | 9.0 ± 0.2 | 2.4 ± 0.3 | 0.9 ± 0.1 | 2.4 ± 0.1 | 1.1 ± 0.0 | 6.8 | |
| Experiment (spike, starter) |
t = 0 h | 6.3 ± 0.5 | 6.1 ± 0.4 | 6.1 ± 0.5 | 6.5 ± 0.2 | 2.4 ± 0.2 | 1.2 ± 0.1 | 2.4 ± 0.3 | 0.9 ± 0.1 | 6.9 |
| t = 12 h | 6.3 ± 0.1 | 4.7 ± 0.2 | 6.1 ± 0.5 | 7.5 ± 0.2 | 0.2 ± 0.0 | 0.1 ± 0.0 | 0.2 ± 0.1 | 0.1 ± 0.0 | 0.6 | |
| t = 24 h | 6.3 ± 0.1 | 4.1± 0.1 | 6.3 ± 0.6 | 8.9 ± 0.1 | 0 | 0 | 0 | 0 | 0 | |