The changes in the viable counts of Lactobacillus during yogurt
storage are shown in Fig. 3. No Lactobacillus was detected in the
blank group. As shown in the figure, the counts of Lactobacillus
during storage minimally decreased. The initial count of 2% AST18-
added yogurt was 7.70 Log (cfu/mL), and that of 8% AST18-added
yogurt was 8.25 Log (cfu/mL). These results indicate that L. casei
AST18 can improve the viable count of yogurt bacteria.