Table 7.
Microbial counts expressed as log10 CFU/mL or CFU/g and standard deviation (SD) of the main microbial groups detected on sheep's milk and 60 days old cheese samples at different manufactures times.
| January | February | March | April | Mean | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Microbial groups | Control | Experimental | Control | Experimental | Control | Experimental | Control | Experimental | Control | Experimental |
| MILK | ||||||||||
| Mesophilic lactobacilli | 6.15 ± 0.02 | 6.20 ± 0.03 | 6.28 ± 0.07 | 6.20 ± 0.04 | 6.21 ± 0.05 | 6.19 ± 0.08 | 6.14 ± 0.07 | 6.11 ± 0.06 | 6.20 ± 0.06 | 6.18 ± 0.04 |
| Thermophilic lactobacilli | 5.54 ± 0.06 | 5.55 ± 0.06 | 5.56 ± 0.03 | 5.51 ± 0.09 | 5.54 ± 0.10 | 5.58 ± 0.07 | 5.55 ± 0.09 | 5.54 ± 0.04 | 5.55 ± 0.01 | 5.55 ± 0.03 |
| Mesophilic lactococci | 5.71 ± 0.05 | 5.68 ± 0.05 | 5.69 ± 0.04 | 5.64 ± 0.05 | 5.60 ± 0.02 | 5.64 ± 0.08 | 5.60 ± 0.06 | 5.65 ± 0.03 | 5.65 ± 0.06 | 5.65 ± 0.02 |
| Streptococci | 5.19 ± 0.07a | 5.28 ± 0.03b | 5.14 ± 0.02a | 5.33 ± 0.07b | 5.16 ± 0.07a | 5.33 ± 0.07b | 5.18 ± 0.05a | 5.35 ± 0.02b | 5.17 ± 0.02a | 5.32 ± 0.03b |
| Enterobacteriaceae | 3.16 ± 0.04b | 3.05 ± 0.05a | 3.17 ± 0.05b | 3.00 ± 0.07a | 3.16 ± 0.07b | 3.00 ± 0.02a | 3.14 ± 0.04b | 3.04 ± 0.06a | 3.14 ± 0.01b | 3.02 ± 0.03a |
| Coagulase positive staphylococci | 3.10 ± 0.05b | 2.95 ± 0.05a | 3.14 ± 0.06b | 3.00 ± 0.01a | 3.19 ± 0.01b | 2.92 ± 0.03a | 3.19 ± 0.02b | 2.96 ± 0.03a | 3.16 ± 0.04b | 2.96 ± 0.03a |
| Coagulase negative staphylococci | 2.01 ± 0.02 | 1.95 ± 0.01 | 2.04 ± 0.06 | 1.93 ± 0.05 | 2.05 ± 0.03 | 1.96 ± 0.04 | 2.08 ± 0.04 | 1.94 ± 0.09 | 2.05 ± 0.03 | 1.95 ± 0.01 |
| Yeast and molds | 3.14 ± 0.02c | 2.91 ± 0.04a | 3.05 ± 0.07b | 2.90 ± 0.02a | 3.14 ± 0.03c | 2.80 ± 0.08a | 3.09 ± 0.07b | 2.94 ± 0.02a | 3.11 ± 0.04b | 2.89 ± 0.06a |
| Total mesophilic bacteria | 5.06 ± 0.06 | 5.00 ± 0.08 | 5.05 ± 0.05 | 5.08 ± 0.06 | 5.06 ± 0.04 | 5.02 ± 0.04 | 5.04 ± 0.06 | 5.05 ± 0.05 | 5.05 ± 0.01 | 5.04 ± 0.04 |
| CHEESE | ||||||||||
| Mesophilic lactobacilli | 7.29 ± 0.03 | 7.35 ± 0.01 | 7.25 ± 0.02 | 7.18 ± 0.03 | 7.26 ± 0.04 | 7.30 ± 0.02 | 7.39 ± 0.06 | 7.52 ± 0.09 | 7.30 ± 0.06 | 7.34 ± 0.14 |
| Thermophilic lactobacilli | 7.39 ± 0.04 | 7.50 ± 0.08 | 7.47 ± 0.03 | 7.72 ± 0.07 | 7.44 ± 0.06 | 7.46 ± 0.04 | 7.28 ± 0.04 | 7.38 ± 0.07 | 7.40 ± 0.08 | 7.52 ± 0.15 |
| Mesophilic lactococci | 7.40 ± 0.07 | 7.45 ± 0.12 | 7.25 ± 0.04 | 7.21 ± 0.06 | 7.26 ± 0.03 | 7.28 ± 0.07 | 7.38 ± 0.05 | 7.40 ± 0.04 | 7.32 ± 0.08 | 7.34 ± 0.11 |
| Streptococci | 6.17 ± 0.04a | 7.34 ± 0.05b | 6.07 ± 0.06a | 7.38 ± 0.04b | 6.13 ± 0.04a | 7.51 ± 0.05c | 6.24 ± 0.02a | 7.53 ± 0.08c | 6.15 ± 0.08a | 7.44 ± 0.09b |
| Enterobacteriaceae | 4.02 ± 0.05 | 4.00 ± 0.05 | 4.00 ± 0.12 | 4.17 ± 0.05 | 4.04 ± 0.04 | 4.00 ± 0.05 | 4.06 ± 0.04 | 4.11 ± 0.04 | 4.03 ± 0.03 | 4.07 ± 0.08 |
| Coagulase positive staphylococci | 3.40 ± 0.05d | 1.25 ± 0.03b | 3.32 ± 0.03c | 1.03 ± 0.06a | 3.43 ± 0.02d | 1.03 ± 0.02a | 3.36 ± 0.03c | 1.04 ± 0.01a | 3.38 ± 0.05c | 1.09 ± 0.11a |
| Coagulase negative staphylococci | 2.21 ± 0.06b | 1.00 ± 0.01a | 2.20 ± 0.03b | 1.01 ± 0.07a | 2.26 ± 0.03b | 1.25 ± 0.04a | 2.15 ± 0.03b | 1.06 ± 0.02a | 2.21 ± 0.05b | 1.08 ± 0.12a |
| Yeast and molds | 3.05 ± 0.07 | 3.00 ± 0.02 | 3.10 ± 0.04 | 3.11 ± 0.08 | 3.24 ± 0.06 | 3.13 ± 0.05 | 3.09 ± 0.03 | 3.14 ± 0.06 | 3.12 ± 0.08 | 3.10 ± 0.06 |
| Total mesophilic bacteria | 5.57 ± 0.01 | 5.40 ± 0.05 | 5.60 ± 0.03 | 5.42 ± 0.09 | 5.47 ± 0.02 | 5.39 ± 0.04 | 5.52 ± 0.03 | 5.64 ± 0.06 | 5.54 ± 0.08 | 5.46 ± 0.12 |
a, b, c, d
Mean values with different letter in superscript within rows indicates significant differences (p ≤ 0.05).