Table 2.
Microbiological quality of the NF
| Parameter (unit) | Batch number | Method | ||||
|---|---|---|---|---|---|---|
| #5 (67 months storage) |
#6 (55 months storage) |
#7 (45 months storage) |
#8 (21 months storage) |
#9 (9 months storage) |
||
| Coliforms (cfu/g) | < 10 | < 10 | < 10 | < 10 | < 10 | AOAC 991.14/E‐Cultural technique (media film) |
| E. coli (cfu/g) | < 10 | < 10 | < 10 | < 10 | < 10 | AOAC 991.14/E‐Cultural technique (media film) |
| Salmonella (in 25 g) | ND | ND | ND | ND | ND | NMKL 71/D‐Cultural technique (non‐chromogenic media) |
| Aerobic plate count (cfu/g) | 400 | 400 | 2,700 | 62,000 | 130,000 | NMKL 86/D‐Cultural technique (non‐chromogenic media) |
| Moulds (cfu/g) | < 10 | < 10 | < 10 | < 10 | 260 | NMKL98/E‐Cultural technique (non‐chromogenic media) |
| Yeast (cfu/g) | < 10 | < 10 | 190 | < 10 | 64 | NMKL98/E‐Cultural technique (non‐chromogenic media) |
| Bacillus cereus (cfu/g) | < 10 | < 10 | < 10 | < 10 | < 10 | Mannitol‐Egg‐Yolk‐Polymyxin Agar‐S ISO 7932 |
| Aerobic spores (cfu/g) | < 100 | < 100 | < 100 | 100 | < 100 | Blood Agar‐S NMKL 189 |
AOAC: Association of Official Analytical Collaboration; cfu: colony forming units; ISO: International Organisation for Standardisation; NMKL: Nordic Committee on Food Analysis.