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Changes in pH, titratable acidity, and bacterial growth in yogurt. (A) pH changes; (B) titratable acidity changes; (C) viable cell count changes. ◯, Non-additive-supplemented yogurt; □, L. brevis B7-supplemented yogurt; △, hydroponic ginseng extract-supplemented yogurt; ▽, L. brevis B7 and hydroponic ginseng extract-supplemented yogurt.
