| Materials | Protein (%) | Limiting amino acids | MEAA | Chemical score % | NPV | ||
| First | Second | Third | |||||
| Dehulled defated cowpea flour (DDCF) | 26.7 | Cystine | Threonine | Valine | −100 | 0.66 | 17.62 |
| Cowpea protein idolate-A (CPII) | 75.0 | Valine | Leucine | Threonine | 1.87 | 112.0 | 8400.0 |
| Cowpea protein isolate-B (CPIM) | 76.0 | Threonine | Leucine | Vlaine | 1.47 | 104.5 | 7942.0 |