| PG | Protein-glutamine glutaminase |
| PGC | Chryseobacterium proteolyticum protein-glutamine glutaminase |
| PGB | Bacteroides helcogenes protein-glutamine glutaminase |
| PGF | Flavobacterium sp. protein-glutamine glutaminase |
| DD | Degree of deamidation |
| DH | Degree of hydrolysis |
| VF(max) | Maximum foam volume |
| t1/2, emulsion | Emulsion half time |
| t1/2, foam | Foam half time |
| PPC | Pea protein concentrate |
| PPI | Pea protein isolate |