Table 3.
Changes of free fatty acids in samples during the processing of dry-cured donkey leg (mg/g).
| Free Fatty Acids | Green Leg (0 d) |
Start of Salting (10 d) |
Middle of Salting (20 d) |
End of Salting (35 d) |
Start of Fermentation (65 d) |
End of Fermentation (105 d) |
Aging (165 d) |
|---|---|---|---|---|---|---|---|
| C4:0 | 0.37 ± 0.07 ab | 0.27 ± 0.04 bcde | 0.26 ± 0.05 ae | 0.31 ± 0.09 ac | 0.41 ± 0.13 a | 0.25 ± 0.03 bcde | 0.29 ± 0.03 ad |
| C14:0 | 0.00 ± 0.00 d | 0.07 ± 0.02 d | 0.36 ± 0.12 bc | 0.49 ± 0.27 ab | 0.20 ± 0.01 cd | 0.50 ± 0.01 b | 0.78 ± 0.20 a |
| C16:0 | 3.43 ± 0.94 d | 3.83 ± 0.55 d | 5.76 ± 1.26 c | 6.24 ± 0.36 c | 8.49 ± 0.92 b | 8.40 ± 0.81 b | 10.51 ± 0.91 a |
| C18:0 | 2.11 ± 0.92 e | 2.50 ± 0.12 e | 4.43 ± 0.28 bc | 3.00 ± 0.73 de | 5.07 ± 0.36 b | 3.92 ± 0. 79 cd | 6.91 ± 0.50 a |
| C20:0 | 0.00 ± 0.00 b | 0.00 ± 0.00 b | 0.69 ± 0.58 a | 0.00 ± 0.00 b | 0.14 ± 0.03 b | 0.00 ± 0.00 b | 0.38 ± 0.14 ab |
| SFAs | 6.12 ± 1.58 e | 6.67 ± 0.81 e | 10.81 ± 1.2 cd | 10.04 ± 0.96 d | 14.32 ± 1.28 b | 13.08 ± 0.75 bc | 18.86 ± 1.23 a |
| C16:1 | 0.00 ± 0.00 b | 0.32 ± 0.02 ab | 0.42 ± 0.06 a | 0.49 ± 0.12 a | 0.41 ± 0.14 a | 5.25 ± 0.34 a | 1.31 ± 0.21 a |
| C18:1n 9c | 0.21 ± 0.02 c | 0.00 ± 0.00 c | 1.51 ± 0.11 b | 0.27 ± 0.11 c | 1.19 ± 0.09 b | 0.63 ± 0.30 a | 5.25 ± 0.24 a |
| C18:1n 9t | 0.00 ± 0.00 c | 0.00 ± 0.00 c | 0.00 ± 0.00 c | 0.00 ± 0.00 c | 0.82 ± 0.39 b | 0.00 ± 0.00 c | 1.58 ± 0.23 a |
| C20:1 | 0.00 ± 0.00 c | 0.00 ± 0.00 c | 0.00 ± 0.00 c | 0.00 ± 0.00 c | 0.70 ± 0.27 b | 0.00 ± 0.00 c | 1.75 ± 0.21 a |
| MUFAs | 0.21 ± 0.02 e | 0.32 ± 0.02 e | 1.93 ± 0.13 d | 0.76 ± 0.19 e | 3.12 ± 0.80 c | 5.88 ± 0.32 b | 9.89 ± 0.58 a |
| C18:2n 6c | 0.40 ± 0.28 d | 0.60 ± 0.05 d | 1.35 ± 028 c | 3.16 ± 0.20 b | 2.80 ± 0.48 b | 3.39 ± 0.06 b | 10.43 ± 0.60 a |
| C18:2n6t | 0.00 ± 0.00 c | 0.00 ± 0.00 c | 0.00 ± 0.00 c | 0.00 ± 0.00 c | 0.22 ± 0.10 b | 0.28 ± 0.25 b | 0.62 ± 0.02 a |
| C18:3n3 | 0.19 ± 0.12 bcde | 0.29 ± 0.11 ac | 0.51 ± 0.07 a | 0.27 ± 0.02 bcd | 0.28 ± 0.13 ad | 0.21 ± 0.02 e | 0.41 ± 0.08 ab |
| C18:3n6 | 0.00 ± 0.00 b | 0.00 ± 0.00 b | 0.00 ± 0.00 b | 0.64 ± 0.15 a | 0.00 ± 0.00 b | 0.00 ± 0.00 b | 0.32 ± 0.08 ab |
| C20:2 | 0.00 ± 0.00 b | 0.00 ± 0.00 b | 0.00 ± 0.00 b | 0.00 ± 0.00 b | 0.00 ± 0.00 b | 0.00 ± 0.00 b | 0.34 ± 0.05 a |
| C20:3 | 0.00 ± 0.00 c | 0.17 ± 0.03 c | 0.00 ± 0.00 d | 0.00 ± 0.00 d | 0.88 ± 0.16 b | 0.42 ± 0.26 b | 3.10 ± 0.48 a |
| PUFAs | 0.59 ± 0.40 d | 1.07 ± 0.08 cd | 1.86 ± 0.45 c | 4.06 ± 0.33 b | 4.17 ± 0.69 b | 4.30 ± 0.33 b | 15.52 ± 1.12 a |
| Total | 6.71 ± 1.25 d | 8.05 ± 0.61 d | 15.29 ± 0.8 c | 14.86 ± 1.19 c | 21.61 ± 2.70 b | 23.25 ± 1.42 b | 44.27 ± 2.70 a |
Note: Different letters (a–e) indicate a statistically significant difference within the same row (p < 0.05). Results expressed as means standard deviation (n = 6).