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. 2020 Jun 19;11:1379. doi: 10.3389/fmicb.2020.01379

FIGURE 5.

FIGURE 5

Changes in intracellular amino acid concentrations of S. albulus M-Z18 in batch fermentations at different environmental pH (pH 5.0, 4.0, and 3.0). Arginine (A), aspartate (B), glutamate (C), lysine (D), serine (E), and glycine (F). Samples were collected at 27 h. Statistical significance is denoted by different letter for the same indicator.