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Table 2 Effect of culture pH on growth of P. acidilactici in batch fermentation using 2 L stirred tank bioreactor

From: Strategies for improving production performance of probiotic Pediococcus acidilactici viable cell by overcoming lactic acid inhibition

Kinetic parameter No pH control pH 5.7
Maximum viable cell concentration (cfu/mL) 1.5 × 1012 ± 0.17a 1.8 × 1011 ± 0.24b
Time to reach maximum viable cell concentration (h) 12a 12a
Viable cell yield (cfu/gGlucose) 1.6 × 1014 ± 0.15a 1.8 × 1013 ± 0.12b
Viable cell productivity (cfu/mL h) 1.2 × 1011 ± 0.12a 1.5 × 1010 ± 0.18b
Maximum lactic acid concentration (g/L) 13.17 ± 0.08a 12.72 ± 0.1b
Lactic acid yield (g/gGlucose) 0.90 ± 0.05a 0.90 ± 0.06a
Lactic acid productivity (g/L h) 0.54 ± 0.05a 0.52 ± 0.08b
  1. The results presented are the average of triplicate experiments and are expressed as mean ± standard deviation
  2. a,bMean values in the same row with different superscripts are significantly different from each other (P < 0.05)