Research Article
Optimal Extraction of Gallic Acid from Suaeda glauca Bge. Leaves and Enhanced Efficiency by Ionic Liquids
Table 1
Design and results by RSM for gallic acid extraction from Suaeda glauca Bge. leaves.
| Number | | | | EE of gallic acid (mg·g−1) | Temperature (°C) | Liquid-solid ratio (mL·g−1) | Extraction time (min) | Actual value | Predicted value |
| 1 | 30 | 10 | 50 | 5.19 | 5.32 | 2 | 70 | 10 | 50 | 5.60 | 5.52 | 3 | 30 | 30 | 50 | 5.34 | 5.42 | 4 | 70 | 30 | 50 | 5.30 | 5.17 | 5 | 30 | 20 | 30 | 5.75 | 5.61 | 6 | 70 | 20 | 30 | 5.87 | 5.95 | 7 | 30 | 20 | 70 | 5.78 | 5.70 | 8 | 70 | 20 | 70 | 5.18 | 5.32 | 9 | 50 | 10 | 30 | 5.66 | 5.67 | 10 | 50 | 30 | 30 | 5.73 | 5.8 | 11 | 50 | 10 | 70 | 5.71 | 5.65 | 12 | 50 | 30 | 70 | 5.26 | 5.26 | 13 | 50 | 20 | 50 | 6.44 | 6.21 | 14 | 50 | 20 | 50 | 6.16 | 6.21 | 15 | 50 | 20 | 50 | 6.15 | 6.21 | 16 | 50 | 20 | 50 | 6.28 | 6.21 | 17 | 50 | 20 | 50 | 6.04 | 6.21 |
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