Table 3. Effects of tenderizers on colour attributes, pH, microbial safety, and oxidation of semi-dried goat meat jerky.
Treatments1) | Storage period (d) | SEM2) | ||
---|---|---|---|---|
1 | 15 | 30 | ||
Color | ||||
L* | ||||
NC | 26.60by | 27.63abx | 27.12bxy | 0.15 |
PC | 27.07ab | 27.16b | 27.86a | 0.28 |
T1 | 26.61by | 26.95by | 27.85ax | 0.19 |
T2 | 27.48ay | 28.39ax | 27.30aby | 0.13 |
SEM | 0.19 | 0.25 | 0.14 | |
a* | ||||
NC | 5.80cy | 6.13cx | 6.19bx | 0.08 |
PC | 9.27b | 9.26b | 9.11a | 0.27 |
T1 | 9.76ax | 9.96ax | 9.19ay | 0.16 |
T2 | 9.68ax | 9.75ax | 9.13ay | 0.05 |
SEM | 0.12 | 0.14 | 0.21 | |
b* | ||||
NC | 1.06by | 1.63bx | 1.74bx | 0.12 |
PC | 0.98bz | 1.15cy | 2.27ax | 0.03 |
T1 | 1.42az | 1.64by | 1.89abx | 0.06 |
T2 | 1.36az | 2.88ax | 2.04aby | 0.02 |
SEM | 0.03 | 0.06 | 0.1 | |
pH | ||||
NC | 6.43ax | 6.38ay | 6.39ay | 0.01 |
PC | 6.21bx | 6.18by | 5.87dz | 0.01 |
T1 | 6.19cx | 6.07cy | 5.96cz | 0.01 |
T2 | 6.18cx | 5.87dz | 6.08by | 0.01 |
SEM | 0.006 | 0.01 | 0.007 | |
TPC (Log CFU/g) | ||||
NC | 2.99az | 3.14by | 4.97ax | 0.01 |
PC | 2.97abz | 3.48ay | 4.92bx | 0.01 |
T1 | 2.95bz | 3.13by | 4.89bx | 0.01 |
T2 | 2.84cz | 3.11by | 4.68cx | 0.01 |
SEM | 0.01 | 0.01 | 0.01 | |
TBARS (mg MDA/kg) | ||||
NC | 1.49by | 1.54bcx | 1.48by | 0.01 |
PC | 1.63ay | 1.67ax | 1.53az | 0.01 |
T1 | 1.35cy | 1.49cx | 1.46cx | 0.02 |
T2 | 1.37cz | 1.55bx | 1.44cy | 0.01 |
SEM | 0.02 | 0.01 | 0.01 |
Means with a column with different letters are significantly different (p < 0.05).
Means with a row with different letters are significantly different (p < 0.05).
Treatments: NC, synthetic nitrite without tenderizers; PC, natural nitrate without tenderizers; T1, natural nitrate with pineapple powder; T2, natural nitrate with pineapple and tomato powder.
p < 0.05.
TPC, total plate count; TBARS, thiobarbituric acid reactive substances; MDA, malondialdehyde.