TABLE 5.
Response variables | Optimum extraction conditions | Experimental value | Predicted value |
---|---|---|---|
X 1 X 2 X 3 X 4 | |||
YTFC | 72% 35 ml/g 41 min 500 W | 9.10 ± 0.13 | 8.89 |
YDPPH | 80.33 ± 0.41 | 79.27 | |
YOH | 24.28 ± 0.22 | 25.19 |
Note: X 1: ethanol concentration (%); X 2: solvent‐to‐material ratio (ml/g); X 3: ultrasonic time (min); X 4: ultrasonic power (W). The experimental results were all expressed as mean ± standard deviation (n = 3).