Table 1. Comparison of free amino acids (mg/100 g) of wet- and dry-aged pork cuts on 21 days of aging
| Amino acids | Shoulder blade | Belly |
| Wet-aging | Dry-aging | SEM | Wet-aging | Dry-aging | SEM |
| Ala | 188.6b | 342.4a | 12.32 | 159.1b | 276.2a | 14.27 |
| Arg | 36.3b | 89.3a | 4.68 | 29.6b | 74.6a | 3.93 |
| Asn | 7.3 | 7.4 | 0.54 | 6.7 | 6.4 | 0.87 |
| Asp | 8.2b | 28.5a | 0.26 | 8.7b | 23.2a | 0.94 |
| Cys | 52.5b | 99.3a | 1.62 | 41.9b | 72.7a | 0.86 |
| Glu | 84.2b | 215.3a | 8.08 | 85.4b | 182.8a | 5.38 |
| Gly | 112.4b | 206.8a | 4.32 | 103.8b | 184.2a | 3.58 |
| His | 109.2b | 174.3a | 1.04 | 93.4b | 155.9a | 1.87 |
| Ile | 39.3b | 63.8a | 0.85 | 28.5b | 53.7a | 0.73 |
| Leu | 73.7b | 142.8a | 2.63 | 64.6b | 113.5a | 2.48 |
| Lys | 46.3b | 108.4a | 4.81 | 43.7b | 82.7a | 1.03 |
| Met | 41.2b | 76.7a | 1.88 | 33.6b | 54.9a | 1.77 |
| Phe | 36.3 | 38.4 | 1.93 | 30.2b | 43.7a | 1.73 |
| Pro | 28.5b | 48.4a | 0.57 | 26.2b | 37.2a | 0.68 |
| Ser | 86.5b | 158.5a | 3.66 | 74.7b | 119.1a | 4.57 |
| Thr | 31.3b | 74.2a | 1.72 | 20.8b | 56.9a | 1.94 |
| Try | 34.4b | 66.3a | 1.67 | 25.6b | 52.1a | 1.72 |
| Tyr | 56.8b | 78.2a | 2.93 | 48.4b | 64.7a | 1.21 |
| Val | 48.8b | 99.6a | 2.84 | 37.8b | 75.3a | 1.76 |
Means in a row with different letters differ significantly (p<0.05).