| ABTS | 2,2′-azino-bis (3-ethylbenzothiazoline-6-sulphonic acid) |
| CaCl2 | Calcium chloride |
| CCF | Central composite face centered |
| CEX | Cation exchange chromatography |
| CV | Column volumes |
| dO2 | Dissolved oxygen |
| DoE | Design of experiments |
| DSP | Downstream process |
| DTT | Dithiothreitol |
| GSSG | Glutathione disulfide |
| GuHCl | Guanidine hydrochloride |
| HIC | Hydrophobic interaction chromatography |
| HPLC | High-performance liquid chromatography |
| IB | Inclusion body |
| IMAC | Immobilized metal affinity chromatography |
| pHRP | Plant horseradish peroxidase |
| rHRP | Recombinant Horseradish Peroxidase |
| RP | Reversed-phase |
| RT | Room temperature |
| Rz | Reinheitszahl |
| SEC | Size exclusion chromatography |
| TFA | Trifluoroacetic acid |
| TMB | 3,3′,5,5′-tetramethylbenzidine |
| USP | Upstream process |
| wIB | Wet inclusion body |