Table 6.
The set of constraints for different factors and responses for optimizing the PUAE conditions.
| CPE parameters | Target | Lower limit (Li) | Upper Limit (Ui) | Relative importance (ri) | Optimized conditions at D |
Actual experimental conditions |
|---|---|---|---|---|---|---|
| D = 0.760 | ||||||
| x1- S/S Ratio (g/100 mL) | In range | 2 | 10 | 3 | 2.17 | 2.20 |
| x2- Power (W) | Minimize | 70 | 210 | 5 | 115.69 | 105.00 |
| x3-Duty Cycle (%) | In range | 20 | 80 | 3 | 80.00 | 80.00 |
| x4- Time (min.) | Minimize | 1 | 10 | 4 | 5.99 | 6.00 |
| Yield (g/g) | Maximize | 0.25 | 0.53 | 5 | 0.511 | 0.48 ± 0.08 |
| TPC (mg GAE/g DW) | Maximize | 75.57 | 182.66 | 5 | 182.66 | 177.54 ± 2.5 |
| TFC (mg QE/g DW) | Maximize | 9.32 | 37.07 | 5 | 36.69 | 35.71 ± 1.3 |
| AOX (mg GAEAC/g DW) | Maximize | 85.66 | 172.07 | 4 | 164.82 | 160.54 ± 3.7 |
| TAC (mg cyn-3-glc eq/100g DW) | Maximize | 7.02 | 24.84 | 4 | 22.51 | 21.65 ± 0.87 |
| BI | Minimize | 20.28 | 74.86 | 4 | 51.88 | 54.92 ± 2.65 |
TPC: total phenolics content, TFC: total flavonoids content, AOX: antioxidant capacity, TAC: total anthocyanin content, BI: browning index, and D: overall desirability value.