Table 2. Effects of two aging methods and temperature on TBARS, VBN, microbiological traits of pork bellies from Berkshire and crossbred (LYD) pigs during aging
Items | Weeks | Breed | Temperature (°C) | Aging method |
Berkshire | LYD | 0 | 9 | Hanging | Immersed in brine |
TBARS (mg MA/kg) | 0 | 0.22±0.00Ac | 0.14±0.00Bc | 0.18±0.04c | 0.18±0.04c | 0.18±0.04c | 0.18±0.04c |
1 | 0.36±0.11Aa | 0.29±0.02Ba | 0.37±0.10Aa | 0.28±0.03Ba | 0.33±0.10a | 0.32±0.07a |
2 | 0.27±0.03Ab | 0.24±0.02Bb | 0.26±0.04b | 0.25±0.02b | 0.25±0.02b | 0.26±0.04b |
VBN (mg%) | 0 | 6.11±0.07c | 6.11±0.07c | 6.11±0.07c | 6.11±0.07c | 6.11±0.07c | 6.11±0.07c |
1 | 6.97±0.73b | 7.00±0.56b | 6.32±0.28Bb | 7.57±0.16Ab | 6.88±0.73b | 6.99±0.66b |
2 | 8.72±1.24a | 8.97±1.58a | 7.50±0.14Ba | 10.19±0.34Aa | 8.82±1.37a | 8.87±1.48a |
TPC (Log10 CFU) | 0 | 3.79±0.01A | 3.53±0.07Bb | 3.66±0.15 | 3.66±0.15b | 3.66±0.15b | 3.66±0.15b |
1 | 3.82±0.48 | 4.27±0.37a | 3.77±0.44B | 4.27±0.27Aa | 4.26±0.47a | 3.82±0.40ab |
2 | 3.59±0.32B | 4.05±0.11Aa | 3.89±0.13 | 3.75±0.45b | 3.68±0.39b | 3.96±0.21a |
Coliform (Log10 CFU) | 0 | 0.00±0.00b | 0.00±0.00c | 0.00±0.00b | 0.00±0.00b | 0.00±0.00b | 0.00±0.00b |
1 | 3.27±1.07a | 2.79±0.34b | 2.95±0.35a | 3.25±1.17a | 3.34±0.56a | 2.90±1.04a |
2 | 3.15±0.46Ba | 3.59±0.07Aa | 3.17±0.49a | 3.57±0.51a | 3.32±0.45a | 3.42±0.34a |
Means with different superscripts in the same row and section significantly differ at p<0.05.
Means with different superscripts in the same column significantly differ at p<0.05.
TBARS, thiobarbituric acid reactive substances; VBN, volatile basic nitrogen; LYD, Landrace×Yorkshire×Duroc; TPC, total plate count.