Table 2.
ANOVA results for model fitting.
| Ultra−Turax Extraction | Ultrasound Assisted Extraction | |||||
|---|---|---|---|---|---|---|
| TPC | TFC | DPPH | TPC | TFC | DPPH | |
| R2 | 0.9173 | 0.9031 | 0.9477 | 0.8882 | 0.8994 | 0.9483 |
| Adjusted R2 | 0.8208 | 0.7900 | 0.8868 | 0.7578 | 0.7820 | 0.8881 |
| F value | 9.51 | 7.99 | 15.54 | 6.81 | 7.66 | 15.73 |
| p value | 0.0002 | 0.0005 | <0.0001 | 0.001 | 0.0006 | <0.0001 |
| Lack of Fit | 0.0126 | 0.3498 | 0.0529 | 0.6296 | 0.1416 | 0.4432 |
| Constant | +1.40 | +1.36 | +54.75 | +1.44 | +1.28 | +74.13 |
| X1 | +0.22 *** | +0.12 ** | +8.42 *** | −0.32 *** | −0.02 | +7.03 *** |
| X2 | −0.05 | +0.10 * | +16.89 *** | +0.07 | −0.14 ** | +5.92 ** |
| X3 | −0.20 *** | −0.11 * | +1.86 | +0.12 * | −0.02 | +9.13 *** |
| X4 | +0.22 *** | +0.28 *** | +6.45 *** | +0.25 *** | +0.04 | +7.99 *** |
| X1X2 | −0.01 | +0.002 | −0.97 | +0.11 | −0.20 * | +12.19*** |
| X1X3 | +0.05 | +0.21 | +2.38 | +0.27* | +0.23 ** | +3.59 |
| X1X4 | −0.01 | −0.09** | −1.58 | −0.001 | −0.15 * | −1.38 |
| X2X3 | +0.03 | +0.08 | +0.09 | −0.19 | +0.22 * | −2.83 |
| X2X4 | −0.04 | −0.06 | −0.31 | −0.02 | −0.03 | −1.05 |
| X3X4 | −0.004 | −0.007 | +1.27 | −0.16 | −0.47 *** | −9.22 ** |
| X12 | +0.004 | +0.05 | +2.08 | −0.06 | +0.03 | −11.77 *** |
| X22 | +0.05 | −0.09 | −4.41 | −0.18 * | −0.07 | −16.27 *** |
| X32 | −0.24 ** | −0.19 ** | +2.90 | −0.19 * | −0.32 *** | −10.06 *** |
| X42 | −0.08 | −0.12 | −0.51 | +0.10 | +0.03 | −4.83 * |
TPC: total polyphenol content, TFC: total flavonoid content, DPPH: scavenging 2, 2-diphenyl−1-picrylhydrazyl free radical activity, ***p < 0.001; ** p < 0.01; * p < 0.05.