3.2. Total acidity (TA) and pH values of yogurt flavored by CBRB
The results revealed that the level of CBRB added to yogurt did not significantly affect the pH and TA of
freshly prepared yogurt; the pH and TA values were 4.60 and 0.47%, respectively. However, after storage for
21 days, the pH and TA of all samples were gradually changed significantly to 4.37 for pH and 0.85% for TA
as indicated in Fig 1 (0.6% CBRB) due to the lactic acid produced by the yogurt bacteria. These results were
similar to that reported by [14]