2. Material and methods
2.1. Microorganisms
Microorganisms, culture media for storage and recovery, and the incubation conditions used in this study are described in Table 1. All microorganisms were maintained in their culture media supplemented with 20% glycerol (v/v) at 20 C. At the moment of use, aliquots of stored cultures were streaked in their culture media added to bacteriological agar (Oxoid Ltd., Basingstoke, England;
15 g/L) and incubated as outlined in Table 1. Isolated colonies of each microorganism were then transferred to growth media and incubated (Table 1) until they reached turbidity similar to scale 1
MacFarland, which corresponds to approximately 3 108 colony-
forming units per mL (CFU/mL). These cultures were used in the experiments described in the following sections.
2. Material and methods2.1. MicroorganismsMicroorganisms, culture media for storage and recovery, and the incubation conditions used in this study are described in Table 1. All microorganisms were maintained in their culture media supplemented with 20% glycerol (v/v) at 20 C. At the moment of use, aliquots of stored cultures were streaked in their culture media added to bacteriological agar (Oxoid Ltd., Basingstoke, England;15 g/L) and incubated as outlined in Table 1. Isolated colonies of each microorganism were then transferred to growth media and incubated (Table 1) until they reached turbidity similar to scale 1MacFarland, which corresponds to approximately 3 108 colony-forming units per mL (CFU/mL). These cultures were used in the experiments described in the following sections.
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