Table 5.
Microbiological parameters in six additional representative samples of the NF
| Parameter | Unit | Batch number | Method of analysis | |||||
|---|---|---|---|---|---|---|---|---|
| #11 | #12 | #13 | #14 | #15 | #16 | |||
| Aerobic plate count | CFU/g | 1.4 × 104 | 220 | 2 × 104 | 300 | 240 | 380 | Pour plate and spiral plate technique; NEN‐EN‐ISO‐4833 1 EN 2 |
| Bacillus cereus plate count | CFU/g | < 40 | < 40 | < 10 | < 40 | < 10 | < 10 | Spread plate technique; NEN‐EN‐ISO‐7932 |
| Clostridium perfringens plate count | CFU/g | < 10 | < 10 | < 10 | < 10 | < 10 | < 10 | Pour plate or spiral plate technique; NEN‐EN‐ISO‐7937 |
| Coagulase‐positive Staphylococci plate count | CFU/g | < 10 | < 10 | < 10 | < 10 | < 10 | < 10 | Pour plate or spiral plate technique; NEN‐EN‐ISO 6888‐2 |
| Coliforms | CFU/g | < 10 | < 10 | < 10 | < 10 | < 10 | < 10 | Pour plate or spiral plate technique; NEN‐ISO‐4832 |
| Enterobacteriaceae plate count (no confirmation) | CFU/g | < 10 | < 10 | < 10 | < 10 | < 10 | < 10 | Pour plate or spiral plate technique; NEN‐ISO 21528‐2 |
| Escherichia coli plate count | CFU/g | < 10 | < 10 | < 10 | < 10 | < 10 | < 10 | Pour plate or spiral plate technique; NEN‐EN‐ISO 16649‐2 |
| Listeria monocytogenes | /25 g | Not detected | Not detected | Not detected | Not detected | Not detected | Not detected | Detection method; NEN‐EN‐ISO 11290‐1 |
| Moulds plate count | CFU/g | < 10 | < 10 | < 10 | < 10 | < 10 | < 10 | Pour plate or spiral plate technique; ISO‐7954: 1987 + ISO‐7954: 1988 |
| Salmonella | /25 g | Not detected | Not detected | Not detected | Not detected | Not detected | Not detected | Detection method; ISO‐6579 |
| Yeasts plate count | CFU/g | < 10 | < 10 | < 10 | < 10 | < 10 | < 10 | Pour plate or spiral plate technique; ISO‐7954: 1987 + ISO‐7954: 1988 |
CFU: colony forming units; NEN: Nederlandse Norm; EN: Europese Norm; ISO: International Organization for Standardization; AOAC: Association of Official Analytical Collaboration.