Table 2.
Significant coefficients (95% confidence interval) of the design of the regression fitting model
| Xfw (g/g wb) | Urease (pH diff) | DPS% | L* | a* | |
|---|---|---|---|---|---|
| co-tant | 0.1460 | 71.3103 | 166.2580 | 53.1863 | 52.7471 |
| A:Xtw (g/g wb) | 0.4441** | – | – | −63.0148* | – |
| B:Time | −0.0036** | −0.3934* | −10.1995** | – | −1.4559** |
| C:Temperature | −0.0008* | −0.9658** | −0.2821** | 0.5434** | −0.7797** |
| AA | – | – | – | – | – |
| AB | – | – | – | – | – |
| AC | – | – | – | – | – |
| BB | – | 0.0124* | 0.2192** | – | – |
| BC | – | – | – | −0.0181* | 0.0129** |
| CC | – | 0.0033** | – | – | 0.0029** |
| R2 | 83.81 | 94.67 | 98.29 | 86.48 | 97.85 |
| SRE | 0.0108 | 0.2708 | 2.6167 | 0.6677 | 0.2291 |
| MAE | 0.0075 | 0.1299 | 1.4636 | 0.3495 | 0.1182 |
*, ** significant at p < 0.05 and p < 0.01 respectively; R2: square coefficient of the fitting model (indicates the percentage of variability for which the model accounts). A: Xtw, total water fraction; B: Treatment time and C: Hot-air temperature. Xfw: water fraction after drying process; DPS%: heat-treated sample PS x 100/non-treated sample PS. Urease: Urease activity. SRE: standard error of estimate, MAE: mean absolute error