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The main factors and their variation levels for extracting phenyletanes and phenylpropanoids from R. rosea by NADES-UAE.
| Levels | Factors | ||||
|---|---|---|---|---|---|
| X1 (Particle Size, mm) | X2 (Extraction Time, min) | X3 (Temperature, °C) | X4 (Extraction Modulus) | X5 (Molar Water Content) | |
| Main level (0) | 0.5 … 2.0 | 60 | 36 | 1:30 | 5:1:5 |
| High level (+1) | 2.0 … 3.0 | 90 | 50 | 1:40 | 5:1:7 |
| Low level (−1) | 0 … 0.5 | 30 | 22 | 1:20 | 5:1:3 |
