Table 1 Overview of process parameters of bioreactor batch cultivations, including yield coefficients, highest surfactin titer P_max [mg/L], highest biomass X_max [g/L], highest ComX activity ComX_max [MU], as well as the ComX activity at the end of the cultivation ComX t_end [MU]

X_max [g/L]

5.7 ± 0.6

20 h

5.4 ± 0.4

32 h

5.0 ± 0.1

24 h

P_max [mg/L]

800.5 ± 81.3

48 h

1346.6 ± 100.3

40 h

885.7 ± 224.2

44 h

ComX_max [MU]

205.6 ± 4.0

20 h

215.9 ± 17.6

16 h

168.3 ± 11.6

12 h

ComX [MU] t_end

163.7 ± 20.5

48 h

134.2 ± 19.9

44 h

131.3 ± 6.6

48 h

Y_X/S [g/g] at X_≥90%

0.29

0.15

0.21

Y_P/S [g/g] at P_≥90%

0.04

0.04

0.03

Y_P/X [g/g] at P_≥90%/X_≥90%

0.26

0.49

0.33

µ_max [1/h]

0.71

0.52

0.66

q_overall [g/(g·h)]

0.01

0.02

0.01