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Table 1 Summary of the process parameters during various fermentations

From: Foam-free production of Surfactin via anaerobic fermentation of Bacillus subtilis DSM 10T

Glucose concentration [g/L] 2.5 5 7.5 10
Cultivation time [h] 55 102 108 161
Max. CDW [g/L] 0.320 0.612 0.856 0.586
Max. cSurfactin [g/L] 0.087 0.105 0.150 0.158
μmax [h−1] 0.105 0.114 0.118 0.074
YP/X [g/g] 0.278 0.169 0.179 0.259
YX/S [g/g] 0.120 0.105 0.119 0.049
YP/S [g/g] 0.033 0.018 0.022 0.011
qSurfactin [g/(g∙h)] 0.005 0.002 0.002 0.002
vol. qSurfactin [g/(L∙h)] 0.002 0.001 0.002 0.001
  1. All values are mean values of two fermentations.
  2. Comparison of process parameters during anaerobic fermentation of Bacillus subtilis DSM 10T with different glucose concentrations.