Table 1.

Experimental design factors and levels of design of experiments.

Levels	A: Ultrasonic Time (min)	B: Extraction Temperature (°C)	C: Ultrasonic Power (W)	D: Liquid to Solid Ratio (mL/g)	E: Acetone Concentration (%)
−1	40	30	400	30	40
1	80	50	560	40	60