Table 2 Overview of cultivation and process parameters up until the maximum surfactin concentration P_max was reached for reference strain KM1016 at t = 16 h

X _max [g/L]

2.5 ± 0.4

16 h

5.7 ± 0.2

16 h

1.4 ± 0.0

16 h

1.2 ± 0.0

16 h

1.5 ± 0.0

16 h

P _max [mg/L]

920.3 ± 65.1

16 h

31.8 ± 9.1

12 h

707.5 ± 109.4

16 h

627.9 ± 48.6

16 h

735.4 ± 31.9

16 h

P _srfA - lacZ _max [MU]

197.2 ± 24.1

14 h

n.d.

n.d.

227.1 ± 3.5

16 h

259.2 ± 21.0

16 h

532.2 ± 47.0

14 h

ComX _max [MU]

308.5 ± 40.5

16 h

211.5 ± 9.3

14 h

331.2 ± 73.2

16 h

231.5 ± 57.9

14 h

281.8 ± 16.2

16 h

Y _P/X [g/g] at P _max

0.68

0.02

0.95

0.98

0.94

µ _max [1/h]

0.43

0.57

0.53

0.48

0.45

µ _overall [1/h] at X _max

0.27

0.32

0.27

0.24

0.27

q _max [g/(g·h)]

0.18

0.01

0.15

0.15

0.25

q _overall [g/(g·h)] at P _max

0.04

0.002

0.06

0.06

0.06