Table 5.
Experimental values and predicted values of response variables at optimum extraction conditions.
| Response Variables | Optimum Extraction Conditions 1 | Maximum Value | ||||
|---|---|---|---|---|---|---|
| X1 | X2 | X3 | X4 | Predicted | Validation 2 | |
| TPC | 74.4 | 55.4 | 59.6 | 700 W | 10.2 mg GAE/g DW | 9.8 mg GAE/g DW (±0.23) |
| AA | 90.5% | 91.8% (±0.50) | ||||
| EGCG | 0.12 mg/g DW | 0.12 mg/g DW (±0.008) | ||||
1 X1: Temperature (°C); X2: Ethanol concentration (%); X3: Time; X4: Ultrasonic power (W). 2 Experimental results were expressed as average values ± standard deviation (n = 3).