Table 3.
Optimum conditions and validation of predicted and experimental values obtained under the same conditions
| Response variables | Optimum extraction conditions | Maximum values | |||
|---|---|---|---|---|---|
| Sonication temperature (°C) | Sonication time (min) | Ethanol concentration (%) | Predicted | Experimentala | |
| Individual responses | |||||
| TPC (g GAE kg−1 DW) | 60.0 | 39.19 | 49.24 | 72.77 | |
| DPPH (% inhibition) | 40.0 | 24.40 | 25.00 | 91.00 | |
| Combined responses | |||||
| TPC (g GAE kg−1 DW) | 60.0 | 37.07 | 39.14 | 72.27 | 73.02 |
| DPPH (% inhibition) | 86.15 | 85.56 | |||
TPC total phenolic content, DPPH 1,1-diphenyl1-2-picrylhydrazyl scavenging activity
aMean (n = 3)