Table 1. Effects of cryoprotectants on the cell viability of freeze-dried L. fermentum SK152

Before F/D (CFU) After F/D (CFU) Survival rate (%)
Dextrin 2.0×1010 1.1×109 5.6
Skim milk 2.0×1010 4.7×108 2.2
Glucose 2.0×1010 3.5×108 1.7
Trehalose 2.0×1010 3.0×108 1.5
F/D, freeze-drying; CFU, colony-forming unit.