Table 2.
Survival of Salmonella enterica serotype Typhimurium (LT2 JSG626) following the inoculation of the nutrient solution, simulating a sporadic contamination event, in the reservoir and the channels, root, rockwool, and edible leaf tissue over a 28-day growth cycle.
| Time Post-Inoculation | Reservoir Nutrient Solution 1 | Channel Nutrient Solution | Root | Rockwool | Edible Leaf Tissue |
|---|---|---|---|---|---|
| 1 h | 2.21 a 2 | 2.19 ab | 5.72 a | 3.70 ab | 0.00 3 |
| 12 h | 1.54 b | 1.99 b | 6.24 a | 3.78 ab | 0.36 |
| 24 h | 2.22 a | 2.30 a | 5.55 a | 4.26 a | 0.00 3 |
| 7 days | 0.93 c | 0.54 c | 4.34 b | 3.28 b | 0.43 |
| 14 days | 0.44 d | 0.65 c | 3.35 c | 2.52 c | 0.14 |
| 21 days | 0.38 d | 0.53 c | 2.10 d | 2.18 cd | 0.11 |
| 28 days | 0.30 d | 0.28 d | 2.11 d | 1.81 d | 0.23 |
| p value | <0.0001 | <0.0001 | <0.0001 | <0.0001 | 0.5171 |
1 Each data point represents the combined LS-means (log CFU/mL or CFU/g) of three independent studies. 2 Values in a column followed by different letters are significantly different at p < 0.05. 3 The pathogen detected after enrichment.