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Predicted local maximum for the optimization of the MAE applying a Box–Behnken experimental design.
| pH | Solvent (Ethanol) (%) | Solvent-to-Seed Ratio (X4:1) | Treatment Time (min) | Polyphenol (mg GA/g Seed) |
Bixin (%) |
|---|---|---|---|---|---|
| 7.00 | 96 | 5.95 | 5.00 | 2.69 | 0.58 |
| Experimental result | 3.08 ± 0.01 | 0.58 ± 0.02 | |||
| Relative error | −0.39 | 0.00 | |||
| Absolute error (%) | 14.41 | 0.55 | |||
Values are expressed as mean ± standard deviation (n = 3).
