Table 1.
OAD9(34) and experimental results.
| Trial No. | A | B | C | D | MPS (nm) ± SD (n = 3) |
|---|---|---|---|---|---|
| 1 | 1(25) | 1(5) | 1 (500) | 1(4) | 425.8 ± 45.22 |
| 2 | 1(25) | 2(15) | 2(1000) | 2(25) | 404.4 ± 34.83 |
| 3 | 1(25) | 3(25) | 3(1500) | 3(35) | 775.8 ± 29.12 |
| 4 | 2(35) | 1(5) | 2(1000) | 3(35) | 1129.2 ± 95.25 |
| 5 | 2(35) | 2(15) | 3(1500) | 1(4) | 368.4 ± 31.23 |
| 6 | 2(35) | 3(25) | 1(500) | 2(25) | 817.6 ± 70.69 |
| 7 | 3(45) | 1(5) | 3(1500) | 2(25) | 880.9 ± 50.18 |
| 8 | 3(45) | 2(15) | 1(500) | 3(35) | 1073.6 ± 88.90 |
| 9 | 3(45) | 3(25) | 2(1000) | 1(4) | 459.0 ± 28.92 |
| K1 (a) | 535.33 ± 36.39 | 901.967 ± 65.81 | 772.333 ± 68.27 | 417.733 ± 35.12 | |
| K2 | 861.73 ± 67.98 | 615.467 ± 51.65 | 754.2 ± 55.26 | 700.967 ± 51.90 | |
| K3 | 804.50 ± 56.00 | 684.133 ± 42.91 | 675.033 ± 36.84 | 1082.867 ± 73.35 | |
| R (b) | 326.40 | 286.50 | 97.30 | 665.13 | |
| Optimal level | A1 | B2 | C2 | D1 |
A: concentration of vitexin solution (mg/mL); B: antisolvent to solvent volume ratio; C: stirring speed (rpm); D: reaction temperature. (a) KiA = Σ (mean particle size at Ai)/3, the mean values of the mean particle size for a certain factor at each level with standard deviation. (b) RiA = max{KiA} − min{KiA}.