Research Article
Evaluation of Soil Streptomyces Isolates from North-Western Ethiopia as Potential Inhibitors against Spoilage and Foodborne Bacterial Pathogens
Table 6
The antagonistic effects of temperature, pH, organic solvents, and additives on the CFS.
| | Concentrations used for treatment | RS18 | RS25 | RS37 | RS48 | RS72 | RS89 | RS97 | RS115 |
| | Temperature/time | | | | | | | | | | 45°C/30 min | ++ | ++ | ++ | ++ | ++ | ++ | ++ | ++ | | 65°C/30 min | ++ | ++ | ++ | ++ | ++ | ++ | ++ | ++ | | 85°C/30 min | + | + | + | ++ | + | ++ | + | ++ | | 100°C/30 min | ̶ | ̶ | — | ++ | — | ++ | ̶ | ++ | | 121°C/30 min | ̶ | ̶ | — | ̶ | ̶ | — | ̶ | ̶ | | pH/time | | | | | | | | | | 2/30 min | + | + | + | ++ | + | ++ | ++ | ++ | | 4/30 min | ++ | ++ | ++ | ++ | ++ | ++ | ++ | ++ | | 6/30 min | ++ | ++ | ++ | ++ | ++ | ++ | ++ | ++ | | 8/30 min | + | + | + | ++ | + | ++ | + | ++ | | 10/30 min | ̶ | ̶ | ̶ | ̶ | ̶ | ̶ | ̶ | ̶ | | 12/30 min | ̶ | ̶ | — | ̶ | ̶ | — | ̶ | ̶ | | Organic solvent/time | | | | | | | | | | Methanol 10% (vol/vol)/30 min | + | + | + | ++ | + | ++ | + | ++ | | Ethanol 10% (vol/vol)/30 min | ++ | ++ | ++ | ++ | ++ | ++ | ++ | ++ | | Additive/time | | | | | | | | | | Potassium chloride 1% (wt/vol)/30 min | + | + | + | ++ | + | ++ | + | ++ | | Sodium citrate 1%(wt/vol)/30 min | ++ | ++ | ++ | ++ | ++ | ++ | + | ++ |
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̶ ̶: no inhibition zone; + Inhibition ; ++ have inhibition mm. |