In this assay, the initial concentration used was 11010
cfu mlÿ1 and sucrose was used as the protectant. Freeze-dried samples were rehydrated with the following rehydra-tion media: 10% non-fat skim milk, 10% sucrose, 5% sodium glutamate, 10% peptone, water, phosphate buffer, or a combination of 15% Peptone, 1% Tryptone, and
05% Meat extract (PTM medium, Font de Valdez et al.
1985b). Each rehydration medium was also used for serial dilution plating to assess viability of cells. The general pro-cedure of cell preparation, freeze-drying and rehydration was as described above. The experiment was repeated twice.
In this assay, the initial concentration used was 11010cfu mlÿ1 and sucrose was used as the protectant. Freeze-dried samples were rehydrated with the following rehydra-tion media: 10% non-fat skim milk, 10% sucrose, 5% sodium glutamate, 10% peptone, water, phosphate buffer, or a combination of 15% Peptone, 1% Tryptone, and05% Meat extract (PTM medium, Font de Valdez et al.1985b). Each rehydration medium was also used for serial dilution plating to assess viability of cells. The general pro-cedure of cell preparation, freeze-drying and rehydration was as described above. The experiment was repeated twice.
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