Table 5 Predicted and actual response values for the verification model
Set | Extraction temperature (°C) | Extraction time (min) | Solvent ratio (water: ethanol) (v/v %) | Extraction yield (%) | DPPH radical scavenging activity (%) | Total phenolic content (mg GAE/g extract) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Act. value | Pred. value | RSE (%) | Act. value | Pred. value | RSE (%) | Act. value | Pred. value | RSE (%) | ||||
1 | 75 | 100 | 80:20 | 19.82 | 19.87 | 0.26 | 70.27 | 68.92 | 1.96 | 117.75 | 114.99 | 2.40 |
2 | 70 | 100 | 75:25 | 20.69 | 20.69 | 0 | 73.7 | 74.98 | 1.70 | 116.88 | 118.93 | 1.72 |
3 | 70 | 100 | 83:17 | 20.18 | 20.29 | 0.55 | 71.28 | 73.89 | 3.53 | 115.25 | 117.69 | 2.30 |