| Variety | Arg | Ser | Asx | Glx | Thr | Gly | Ala | Tyr | Pro | Met | Val | Phe | Ile | Leu | Cys | Trp | His | Lys |
| Carmagnola | 12.6 | 5.6 | 11.3 | 17.5 | 2.6 | 4.6 | 5.3 | 3.9 | 4.7 | 2.5 | 5.0 | 4.9 | 3.9 | 6.5 | 1.4 | 0.7 | 2.8 | 4.3 |
| CS | 11.6 | 5.4 | 11.3 | 17.2 | 2.6 | 4.8 | 5.1 | 3.4 | 4.8 | 2.3 | 5.5 | 4.7 | 4.2 | 6.9 | 1.8 | 0.8 | 2.8 | 4.0 |
| Fibranova | 11.5 | 4.9 | 10.3 | 17.3 | 3.1 | 5.0 | 5.2 | 4.0 | 5.1 | 2.8 | 5.0 | 4.6 | 3.9 | 7.1 | 1.9 | 0.9 | 3.1 | 4.4 |
| Futura 75 | 11.9 | 5.4 | 11.1 | 17.7 | 3.6 | 5.0 | 5.3 | 2.9 | 4.9 | 2.1 | 5.1 | 4.8 | 4.0 | 7.1 | 1.4 | 0.8 | 2.8 | 4.0 |
| Felina 32 | 12.5 | 5.3 | 11.0 | 16.7 | 3.7 | 5.0 | 5.1 | 3.0 | 4.1 | 2.4 | 5.5 | 4.6 | 4.4 | 7.1 | 1.8 | 0.9 | 2.9 | 4.0 |
| Ferimon | 11.6 | 4.9 | 10.5 | 17.0 | 3.9 | 4.9 | 5.0 | 3.8 | 4.5 | 2.1 | 5.7 | 4.6 | 4.1 | 6.9 | 1.9 | 0.8 | 3.2 | 4.6 |
| Mean | 12.0 | 5.3 | 10.9 | 17.2 | 3.3 | 4.9 | 5.2 | 3.5 | 4.7 | 2.4 | 5.3 | 4.7 | 4.1 | 6.9 | 1.7 | 0.8 | 2.9 | 4.2 |
| SE | 0.3 | 0.2 | 0.2 | 0.2 | 0.3 | 0.1 | 0.1 | 0.3 | 0.2 | 0.2 | 0.2 | 0.1 | 0.1 | 0.1 | 0.1 | <0.1 | 0.1 | 0.2 |