Table 1.
Parameters | Scalding treatments | p-value | ||||
---|---|---|---|---|---|---|
| ||||||
T1 | T2 | T3 | T4 | T5 | ||
| ||||||
54°C/210 s | 55°C/180 s | 56°C/150 s | 57°C/120 s | 58°C/90 s | ||
L*ventral | 53.72d±1.55 | 54.83c±1.38 | 56.44b±1.84 | 57.27a,b±2.51 | 57.55a±1.92 | <0.01* |
a*ventral | −2.25a,b±0.46 | −2.13a±0.46 | −2.09a±0.53 | −2.46b±0.49 | −2.33a,b±0.58 | <0.01* |
b*ventral | 10.19b±1.12 | 10.33a,b±0.86 | 10.51a,b±0.93 | 10.69a,b±1.10 | 10.80a±0.82 | <0.01* |
L*external | 60.11c±1.47 | 61.05b±1.66 | 62.05a±1.95 | 62.68a±1.51 | 62.69a±1.68 | <0.01* |
a*external | −2.81a,b±0.50 | −2.75b±0.52 | −2.93a,b±0.58 | −3.02a±0.47 | −3.01a±0.39 | 0.02* |
b*external | 10.66±0.69 | 10.67±0.85 | 10.76±0.69 | 10.74±0.19 | 10.82±0.75 | 0.80 |
pH | 5.89±0.10 | 5.84±0.08 | 5.86±0.11 | 5.87±0.12 | 5.86±0.11 | 0.10 |
WHC (%) | 68.30±1.98 | 68.60±2.34 | 68.82±1.94 | 68.91±2.01 | 68.67±2.68 | 0.64 |
WB (N) | 10.16±1.74 | 10.09±1.57 | 9.73±1.75 | 9.98±2.01 | 9.56±1.52 | 0.26 |
Moisture | 74.35±0.68 | 74.26±0.56 | 74.41±0.80 | 74.52±0.64 | 74.42±0.59 | 0.39 |
Protein | 23.66±0.74 | 23.69±0.74 | 23.69±0.69 | 23.50±0.75 | 23.65±0.64 | 0.58 |
Lipid | 2.09±0.52 | 2.11±0.46 | 1.91±0.57 | 1.93±0.51 | 1.97±0.41 | 0.20 |
M/P ratio | 3.15±0.12 | 3.14±0.12 | 3.12±0.18 | 3.18±0.12 | 3.15±0.11 | 0.22 |
Yield1) (%) | 74.17±1.63 | 74.33±5.66 | 74.66±2.32 | 74.48±2.41 | 74.84±2.39 | 0.36 |
Yield2) (%) | 80.63±2.57 | 79.85±6.72 | 80.70±2.38 | 79.62±3.09 | 79.14±2.84 | 0.40 |
Yield3) (%) | 24.13±1.76 | 24.27±1.74 | 24.03±1.83 | 24.34±2.01 | 24.18±1.91 | 0.95 |
PD (%) | 26.02c±4.64 | 25.00c±6.10 | 26.21c±5.77 | 31.80b±6.76 | 32.59a±7.52 | <0.01* |
EC | 15.44a±1.59 | 15.72a±1.46 | 15.59a±1.57 | 14.42b±1.25 | 14.46b±1.17 | <0.01* |
WHC, water holding capacity; WB, Warner-Bratzler shear force; M/P ratio, moisture/protein ratio; PD, protein denaturation; EC, emulsification capacity (expressed in x mL of oil for 1 g of sample).
Eviscerated carcass yield.
Chilled carcass yield.
Deboned chicken breast yield.
Different letters in the same row indicate significant difference by the Tukey test (p≤0.05).