Table 3. Microbiological evaluation of examined samples (CFU/g) (n = 50 each).
Ras cheese | Domiati cheese | Mish | ||
---|---|---|---|---|
Total bacterial count | No. (%) of positive samples | 50 (100%) | 50 (100%) | 50 (100%) |
Min. | 5 × 105 | 7 × 104 | 7 × 103 | |
Max. | 1 × 109 | 1 × 107 | 1 × 108 | |
Mean ± SE | 2 × 108 ± 0.5 × 108 | 3 × 106 ± 0.4 × 106 | 1 × 107 ± 0.2 × 107 | |
Coliforms count (MPN/g) | No. (%) of positive samples | 22 (44%) | 24 (48%) | 46 (92%) |
Min. | 2 × 104 | 4 × 10 | 2 × 10 | |
Max. | 2 × 106 | 2 × 102 | 2 × 103 | |
Mean ± SE | 3 × 105 ± 1 × 105 | 5 × 10 ± 0.1 × 10 | 5 × 102 ± 0.8 × 102 | |
Staphylococcus count | No. (%) of positive samples | 46 (92%) | 44 (88%) | 50 (100%) |
Min. | 1 × 104 | 1 × 104 | 7 × 102 | |
Max. | 6 × 106 | 2 × 106 | 9 × 105 | |
Mean ± SE | 1 × 106 ± 0.2 × 106 | 4 × 105 ± 0.7×105 | 1 × 105 ± 0.2 × 105 | |
Yeast count | No. (%) of positive samples | 45 (90%) | 50 (100%) | 46 (92%) |
Min. | 1 × 104 | 3 × 103 | 4 × 103 | |
Max. | 1 × 106 | 8 × 105 | 1 × 106 | |
Mean ± SE | 3 × 105 ± 0.6 × 105 | 1 × 105 ± 0.2 × 105 | 5 × 105 ± 0.6 × 105 | |
Mold count | No. (%) of positive samples | 25 (50%) | 22 (44%) | 36 (72%) |
Min. | 2 × 103 | 1 × 103 | 3 × 102 | |
Max. | 2 × 104 | 2 × 104 | 1 × 105 | |
Mean ± SE | 7 × 103 ± 0.9 × 103 | 4 × 103 ± 0.9 × 103 | 3 × 104 ± 0.7 × 104 |