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Table 1 Fermentation performances of parent strain, mutants S1 to S6 at 24 h with a 5-l bioreactor

From: Application of 8-parallel micro-bioreactor system with non-invasive optical pH and DO biosensor in high-throughput screening of l-lactic acid producing strain

  Maximum DCW (g/l) l-lactic acid (g/l) Yield (g/g)
Control 9.76 ± 0.42 88 ± 2.45 0.903 ± 0.005
S1 11.04 ± 0.32a 96 ± 2.45a 0.914 ± 0.009
S2 10.61 ± 0.64 90 ± 1.63 0.904 ± 0.013
S3 9.59 ± 0.28 100 ± 3.27a 0.914 ± 0.003a
S4 10.97 ± 0.33a 104 ± 1.63a 0.932 ± 0.013a
S5 9.93 ± 0.20 84 ± 1.63 0.918 ± 0.011
S6 9.64 ± 0.35 88 ± 3.27 0.914 ± 0.005
  1. aSignificant difference at P < 0.05 as compared to the control