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The fitted quadratic polynomial regression model equation for TP, DPPH, FRAP, and ABTS.
| Response | Equation |
|---|---|
| TP | TP = 6.13 + 1.81A + 1.39B+ 0.6943AB + 0.9544A2 − 1.46C2 |
| DPPH | DPPH = 10.72 + 0.6264A + 1.71C |
| FRAP | FRAP = 56.27 + 9.21A + 5.35C + 7.26A2 |
| ABTS | ABTS = 14.83 + 3.54A + 2.09B |
