Table 2. Quality characteristics of jerky with humectants
Parameters | No. of studies | SMD | 95% CI | p-value | Heterogeneity | Publication bias |
Lower | Upper | Q | p-value | I2 (%) | p-value (Begg’s test) | Trim and fill |
Moisture | 29 | 1.28 | 0.359 | 2.195 | <0.05 | 76.20 | <0.05 | 61.9 | 0.11 | - |
Water activity | 20 | –0.26 | –0.671 | 0.153 | 0.21 | 22.95 | 0.17 | 22.9 | 0.08 | 7 |
pH | 22 | 0.12 | –0.296 | 0.542 | 0.57 | 38.87 | 0.15 | 43.4 | 0.74 | - |
Protein | 16 | –1.61 | –2.534 | –0.676 | <0.05 | 34.19 | <0.05 | 56.1 | 0.31 | - |
Fat | 13 | –0.09 | –0.652 | 0.454 | 0.72 | 21.45 | <0.05 | 44.0 | 0.12 | - |
Ash | 13 | –1.59 | –3.259 | 0.086 | 0.06 | 36.43 | <0.05 | 67.1 | <0.05 | - |
Shear force | 17 | –0.84 | –1.316 | –0.359 | <0.05 | 15.35 | 0.49 | 0.00 | <0.05 | 5 |
TPC | 6 | 0.45 | –0.971 | 1.864 | 0.53 | 12.42 | <0.05 | 59.8 | 0.98 | - |
TBARS | 9 | 0.30 | –0.868 | 1.472 | 0.61 | 20.53 | <0.05 | 61.0 | 0.60 | - |
Metmyoglobin | 11 | –0.96 | –1.672 | –0.249 | <0.05 | 13.13 | 0.22 | 23.9 | <0.05 | 4 |
CIE L* | 16 | 0.20 | –0.516 | 0.919 | 0.58 | 33.68 | <0.05 | 55.5 | 0.19 | - |
CIE a* | 16 | 0.49 | –0.037 | 1.035 | 0.06 | 29.70 | <0.05 | 50.0 | 0.82 | - |
CIE b* | 16 | 1.67 | 0.172 | 3.179 | <0.05 | 43.14 | <0.05 | 65.2 | <0.05 | - |
MFI | 8 | 3.22 | –0.002 | 6.433 | <0.05 | 23.31 | <0.05 | 70.0 | <0.05 | - |
Overall acceptance | 25 | 1.73 | 0.714 | 2.744 | <0.05 | 201.59 | <0.05 | 88.1 | <0.05 | - |
SMD, standardized mean difference; CI, confidence interval of SMD; Q, chi-squared statistic; I2, percentage of variation; TPC, total plate count; TBARS, thiobarbituric acid reactive substances; MFI, myofibrillar fragmentation index.