| DCW | Dry cell weight |
| dO2 | Dissolved oxygen |
| DoE | Design of experiments |
| CCF | Face centered composite design |
| IB | Inclusion Body |
| IPTG | isopropyl β-D-1 thiogalactopyranoside |
| FT-IR | Fourier Transformed – Infrared (Spectroscopy) |
| MQ | Ultrapure water |
| qs,C [g/g/h] | specific substrate uptake rate |
| qp [g/g/h] | Specific production rate |
| SEM | Scanning electron microscopy |