TABLE 3.
ACC (log CFU/cm2) and ATPmetry (pg cATP/ml) for processing surfaces in relation with cleaning treatment.
| Cleaning treatment | ACC (log CFU/g) | ATPmetry (pg cATP/ml) | Group | Mann–Whitney Test - Conventional cleaning (Group A), Enzymatic cleaning (Group B) | ||||||||
| n | P50 | P90 | Pmax | n | P50 | P90 | Pmax | ACC | ATPmetry | |||
| Conventional cleaning | 8 | 2,0 | 7,7 | 8,3 | 17 | 0,6 | 39,7 | 929,2 | A | p = 0.042 | p = 0.002 | |
| Enzymatic cleaning | Reinforced enzymatic cleaning | 18 | 1,3 | 2,7 | 3,2 | 5 | 0,2 | 0,5 | 0,7 | B | ||
| Routine enzymatic cleaning 3x/wk | 10 | 2,0 | 2,3 | 2,3 | 7 | 0,2 | 1,2 | 2,6 | B | |||
| Routine enzymatic cleaning 2x/wk | 7 | DL | 0,1 | 0,3 | 8 | 0,3 | 0,4 | 0,4 | B | |||
| Routine enzymatic cleaning 1x/wk | 4 | <Dl | 8 | 0,3 | 0,5 | 0,5 | B | |||||
| Conventional cleaning | 9 | <Dl | 8 | 0,2 | 0,5 | 0,9 | A | |||||
| Enzymatic cleaning | Reinforced enzymatic cleaning 2 (OPC) | 18 | 1,0 | 1,0 | 1,0 | 16 | 0,1 | 0,3 | 0,6 | B | ||
ACC, aerobic colony counts; Dl, detection limit; P50, percentile 50; P90, percentile 90; Pmax, percentile 100.