Table 4.
Analysis of variance for the experimental results for extraction parameters.
| Model Parameter | DF | Phytochemicals |
Antioxidant capacity |
||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TPC |
TFC |
Pro. A |
FRAP |
CUPRAC |
ABTS |
DPPH |
|||||||||
| Estimate | Prob>|t| | Estimate | Prob>|t| | Estimate | Prob>|t| | Estimate | Prob>|t| | Estimate | Prob>|t| | Estimate | Prob>|t| | Estimate | Prob>|t| | ||
| Intercept | |||||||||||||||
|
β0 |
1 |
85.24 |
<.0001 |
69.16 |
<.0001 |
106.72 |
<.0001 |
545.61 |
<.0001 |
4944.5 |
<.0001 |
1466.35 |
<.0001 |
809.91 |
<.0001 |
| Linear term | |||||||||||||||
| β | 1 | 5.70 | 0.0050∗∗ | 3.64 | 0.0283∗ | 5.61 | 0.0035∗∗ | 36.61 | 0.0028∗∗ | 253.68 | 0.0046∗∗ | 93.79 | 0.0006∗∗∗ | 43.36 | 0.0354∗ |
| β2 | 1 | 8.76 | 0.0007∗∗∗ | 4.91 | 0.0092∗∗ | 5.79 | 0.0031∗∗ | 83.97 | 0.0001∗∗∗ | 487.35 | 0.0002∗∗∗ | 108.50 | 0.0003∗∗∗ | 79.65 | 0.0033∗∗ |
| β3 | 1 | -0.727 | 0.5691 | -2.14 | 0.1328 | 0.063 | 0.9553 | 5.89 | 0.4195 | -12.65 | 0.8179 | 1.42 | 0.9116 | 2.89 | 0.8562 |
| Interactions | |||||||||||||||
| β12 | 1 | 0.842 | 0.6393 | 2.29 | 0.2316 | -0.251 | 0.8761 | 1.59 | 0.8727 | 123.00 | 0.1562 | 25.05 | 0.2046 | 30.88 | 0.2094 |
| β13 | 1 | 0.064 | 0.9713 | -3.10 | 0.1253 | -0.186 | 0.9082 | -11.76 | 0.2696 | -21.27 | 0.7847 | -16.78 | 0.3736 | -18.75 | 0.4219 |
|
β23 |
1 |
-0.165 |
0.9259 |
-0.195 |
0.9122 |
0.465 |
0.7737 |
7.00 |
0.4927 |
44.43 |
0.5732 |
36.95 |
0.0842 |
16.45 |
0.4777 |
| Quadratic | |||||||||||||||
| β11 | 1 | -2.43 | 0.2254 | 0.976 | 0.6021 | -2.538 | 0.1720 | -15.56 | 0.1753 | -190.33 | 0.0559∗ | -35.95 | 0.1006 | -19.92 | 0.4132 |
| β22 | 1 | 1.63 | 0.3946 | -0.976 | 0.6023 | 0.4119 | 0.8063 | 22.29 | 0.0733 | 11.26 | 0.8892 | 10.99 | 0.5656 | 20.31 | 0.4046 |
| β33 | 1 | -1.73 | 0.3712 | -1.11 | 0.5532 | -3.655 | 0.0702 | -28.89 | 0.0326∗ | -93.34 | 0.2783 | -52.26 | 0.0329∗ | -36.85 | 0.1597 |
Significantly different at ∗p < 0.05, ∗∗p < 0.01, ∗∗∗p < .001; β0: intercept; β1, β2, and β3: linear regression coefficients for time, temperature, and power; β12, β13, and β23: regression coefficients for interaction between time × temperature, time × power, temperature × power; β11, β22, and β33: quadratic regression coefficients for time × time, temperature × temperature, and power × power.