Table 1.
Factor level and design matrix for extraction yield and phenylpropanoids percentage.
| Exp No. | Run Order | Cation a | Anion b | IL c | IL-[M] d | Yield % e | Phenylpropanoids % f |
|---|---|---|---|---|---|---|---|
| 1 | 11 | [1,3-diMIM] | DMP | 2 | 0.3 | 0.87 | 63.57 |
| 2 | 18 | [1,3-diMIM] | DMP | 2 | 0.5 | 1.13 | 60.68 |
| 3 | 15 | [1-But-3-MIM] | DMP | 6 | 0.5 | 1.36 | 52.14 |
| 4 | 16 | [1-But-3-MIM] | DMP | 6 | 0.3 | 1.26 | 54.74 |
| 5 | 12 | [1,3-diMIM] | DMP | 2 | 0.3 | 0.87 | 64.07 |
| 6 | 3 | [1-EtOH-3-MIM] | DMP | 4 | 0.3 | 1.02 | 55.65 |
| 7 | 8 | [1-EtOH-3-MIM] | DMP | 4 | 0.5 | 1.40 | 56.38 |
| 8 | 7 | [1,3-diMIM] | Cl | 1 | 0.3 | 1.13 | 68.95 |
| 9 | 14 | [1,3-diMIM] | Cl | 1 | 0.5 | 1.17 | 75.23 |
| 10 | 5 | [1,3-diMIM] | Cl | 1 | 0.5 | 1.18 | 76.41 |
| 11 | 17 | [1-But-3-MIM] | Cl | 5 | 0.3 | 1.33 | 54.01 |
| 12 | 10 | [1-But-3-MIM] | Cl | 5 | 0.5 | 1.33 | 48.61 |
| 13 | 13 | [1-EtOH-3-MIM] | Cl | 3 | 0.3 | 1.12 | 50.90 |
| 14 | 9 | [1-EtOH-3-MIM] | Cl | 3 | 0.3 | 1.10 | 55.88 |
| 15 | 6 | [1-EtOH-3-MIM] | Cl | 3 | 0.5 | 1.38 | 55.16 |
| 16 | 4 | [1-EtOH-3-MIM] | Cl | 3 | 0.4 | 1.33 | 55.21 |
| 17 | 1 | [1-EtOH-3-MIM] | Cl | 3 | 0.4 | 1.27 | 55.18 |
| 18 | 2 | [1-EtOH-3-MIM] | Cl | 3 | 0.4 | 1.22 | 55.24 |
a Cation: [1,3-diMIM]: 1,3-dimethylimidazolium, [1-But-3-MIM]: 1-butyl-3-methylimidazolium, [1-EtOH-3-MIM]: 1-(2-hydroxyethyl)-3-imidazolium; b Cl: chloride, DMP: dimethyl phosphate; c IL: see Figure 1; d IL-[M]: Molarity of ILs’ aqueous solutions; e Yields are the mean of two extractions; f Percentage obtained by FID peak-area normalization. Values are the mean of two analyses.