Table 4 Analysis of variance (ANOVA) for the Box–Behnken model optimizing Phlorotannin extraction from D. justii.
Source | DF | SS | MS | F Value | p Value |
|---|---|---|---|---|---|
Model | 14 | 12.3780 | 0.8841 | 36.71 | 0.000 |
Linear | 4 | 11.4202 | 2.8551 | 118.53 | 0.000 |
Solvent | 1 | 10.9271 | 10.9271 | 453.66 | 0.000 |
S: L Ratio | 1 | 0.1736 | 0.1736 | 7.21 | 0.023 |
Temperature | 1 | 0.2848 | 0.2848 | 11.83 | 0.006 |
Time | 1 | 0.0132 | 0.0132 | 0.55 | 0.476 |
Square | 4 | 0.1117 | 0.0279 | 1.16 | 0.385 |
Solvent * Solvent | 1 | 0.0022 | 0.0022 | 0.09 | 0.771 |
S: L Ratio * S: L Ratio | 1 | 0.0000 | 0.0000 | 0.00 | 0.974 |
Temperature * Temperature | 1 | 0.0852 | 0.0852 | 3.54 | 0.089 |
Time * Time | 1 | 0.0000 | 0.0000 | 0.00 | 0.976 |
2-Way Interaction | 6 | 0.6808 | 0.1135 | 4.71 | 0.016 |
Solvent * S: L Ratio | 1 | 0.0809 | 0.0809 | 3.36 | 0.097 |
Solvent * Temperature | 1 | 0.2921 | 0.2921 | 12.13 | 0.006 |
Solvent * Time | 1 | 0.0071 | 0.0071 | 0.30 | 0.598 |
S: L Ratio * Temperature | 1 | 0.0028 | 0.0028 | 0.12 | 0.740 |
S: L Ratio * Time | 1 | 0.2733 | 0.2733 | 11.35 | 0.007 |
Temperature * Time | 1 | 0.0474 | 0.0474 | 1.97 | 0.191 |
Error | 10 | 0.2409 | 0.0241 | ||
Lack of fit | 8 | 0.2118 | 0.0265 | 1.82 | 0.402 |
Pure error | 2 | 0.0291 | 0.0145 | ||
Total | 24 | 12.6189 |
