Table 3. Process parameters observed in fed batch processes under different feeding conditions.
| Parameters | C + N | C | H2O |
|---|---|---|---|
| ΔRhamnolipids (g L−1) | 10.93 | 7.76 | 2.88 |
| ΔBiomass (g L−1) | 4.78 | 3.34 | 2.41 |
| YP∕X (g g−1) | 2.29 | 2.32 | 1.19 |
| YP∕S (g g−1) | 0.33 | 0.35 | 0.21 |
| QP (g L−1 h−1) | 0.047 | 0.033 | 0.027 |
| (g L−1 h−1) | 0.168 | 0.073 | 0.197 |
| (g L−1 h−1) | 0.027 | 0.027 | 0.027 |
Notes.
- ΔRhamnolipids
- Difference between final and initial rhamnolipid concentration
- ΔBiomass
- Difference between final and initial cellular concentration
- YP∕X
- Yield of product synthesized per unit of cell mass produced
- YP∕S
- Yield of product synthesized per unit of substrate consumed
- QP
- Volumetric rhamnolipids production rate
- Volumetric glycerol consumption rate
- Volumetric nitrate consumption rate. The parameters for the condition “H2O” were calculated at 100 h of culture