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Table 1 Process parameter of different media setups of the P. putida—rhamnolipid system and B. subtilis—surfactin system

From: Integrated foam fractionation for heterologous rhamnolipid production with recombinant Pseudomonas putida in a bioreactor

  P. putida—rhamnolipid in Wilms P. putida—rhamnolipid in ModR B. subtilis—surfactin
Overall YP/X (g/g) 0.06 ±0.01 0.10 ±0.01 0.15 ±0.07
Overall YX/S (g/g) 0.16 ±0.02 0.26 ±0.02 0.24 ±0.06
Max. qProduct [mg/(g∙h)] 5.90 ±0.29 24.71 ±0.69 45.00 ±26.93
Integral qProduct [mg/(g∙h)] 1.89 ±0.44 5.57 ±0.39 4.37 ±1.98
Max. vol. qProduct [mg/(L∙h)] 8.70 ±1.16 38.09 ±2.12 46.25 ±35.68
Overall product recovery (%) 83.39 ±1.51 97.38 ±0.33 85.35 ±13.19
Max. product enrichment 128.54 ±36.54 197.98 ±13.42 80.68 ±39.73
Mean bact. enrichment 0.25 ±0.07 0.86 ±0.19 0.79 ±0.45
Max. product conc. in foam (g/L) 1.04 ±0.04 2.15 ±0.04 2.35 ±0.76
Product recovered in foam (g) 0.30 ±0.02 0.83 ±0.03 0.53 ±0.35
  1. The mean of different process parameters of all B. subtilis—surfactin systems is depicted (Willenbacher et al. 2014). In P. putida—rhamnolipid systems YP/X, YX/S, max. qProduct, integral qProduct and max. vol qProduct were calculated using logistic fit data whereas all other parameter were calculated using measured data