Table 4.

Analysis of variance (ANOVA) for effects of ultrasound-assisted extraction (UAE) process variables on extraction of TPC and AA using a quadratic model.

	TPC			AA
	Sum of Squares	F-Value	p-Value	Sum of Squares	F-Value	p-Value
Model	3.046	6.105	0.002	447.240	4.997	0.004
X1	11.084	22.214	0.001	1359.015	15.184	0.002
X2	1.274	2.554	0.136	250.907	2.803	0.120
X3	8.797	17.630	0.001	1450.815	16.209	0.002
X4	3.383	6.779	0.023	418.335	4.674	0.052
X1X2	1.387	2.779	0.121	142.803	1.595	0.231
X1X3	0.072	0.143	0.712	79.210	0.885	0.365
X1X4	0.223	0.447	0.516	6.003	0.067	0.800
X2X3	0.628	1.259	0.284	11.223	0.125	0.729
X2X4	0.209	0.419	0.529	196.000	2.190	0.165
X3X4	1.736	3.479	0.087	115.563	1.291	0.278
X12	2.634	5.278	0.040	1353.271	15.120	0.002
X22	11.333	22.713	0.001	823.916	9.205	0.010
X32	4.062	8.141	0.015	1072.260	11.980	0.005
X42	0.087	0.174	0.684	29.558	0.330	0.576

X₁: Temperature; X₂: Ethanol concentration; X₃: Extraction time; X₄: Ultrasonic power.