Table 6.
LOD50 and LOD95 results obtained for all methods and dairy categories tested and expressed in Log10 CFU/50 ml.
| Method | Milk | LOD50 | LOD95 |
|---|---|---|---|
| Culture | Raw milk | 4.20 (3.89; 4.51)1 | 4.83 (4.53; 5.15)1 |
| Heat-treated milk | 1.80 (1.61; 1.98)1,2 | 2.44 (2.26; 2.61)1,2 | |
| Milk powder | 2.22 (1.93; 2.51)1 | 2.86 (2.57; 3.15)1 | |
| IS900 qPCR | Raw milk | 2.74 (2.50; 2.98) | 3.37 (3.13; 3.62) |
| Heat-treated milk | 2.98 (2.80; 3.17) | 3.62 (3.44; 3.80) | |
| Milk powder | 2.71 (2.47; 2.94)1 | 3.34 (3.11; 3.58)1 | |
| f57 qPCR | Raw milk | 3.72 (3.49; 3.94)1 | 4.34 (4.11; 4.57)1 |
| Heat-treated milk | 3.62 (3.32; 3.91) | 4.26 (3.97; 4.54) | |
| Milk powder | 3.15 (2.94; 3.34) | 3.78 (3.58; 3.98) | |
| PMS-phage | Raw milk | 3.66 (3.44; 3.87)1 | 4.30 (4.08; 4.51)1 |
| Heat-treated milk | 3.67 (3.35; 3.99)1,2 | 4.30 (3.99; 4.62)1,2 | |
| Milk powder | 3.16 (2.96; 3.36) | 3.80 (3.59; 4.00) |
Between brackets, 95% Confidence Interval. 1Estimated values; 2combined results from both laboratories.