Table 5.

Analysis of variance (ANOVA) for the response surface quadratic models for selected responses for ellagic acid.

Source	Sum of Squares	df	Mean Square	F-Value	p-Value
Mixing and heating
Model	191.87	9	21.32	6.72	0.0100
X 1	27.08	1	27.08	8.54	0.0223
X 2	4.96	1	4.96	1.56	0.2513
X 3	16.30	1	16.30	5.14	0.0578
X 1 X 2	14.86	1	14.86	4.68	0.0672
X 1 X 3	63.28	1	63.28	19.95	0.0029
X 2 X 3	20.30	1	20.30	6.40	0.0393
X 1 2	22.78	1	22.78	7.18	0.0316
X 2 2	10.39	1	10.39	3.27	0.1133
X 3 2	7.51	1	7.51	2.37	0.1677
Residual	22.21	7	3.17
Lack of fit	18.23	3	6.08	6.11	0.0565
Pure error	3.98	4	0.9950
Cor total	214.08	16
R2 = 0.8963
UAE
Model	149.79	9	16.64	9.31	0.0038
X 1	49.60	1	49.60	27.74	0.0012
X 2	3.59	1	3.59	2.01	0.1993
X 3	64.18	1	64.18	35.90	0.0005
X 1 X 2	0.3600	1	0.3600	0.2014	0.6672
X 1 X 3	23.52	1	23.52	13.16	0.0084
X 2 X 3	0.8464	1	0.8464	0.4734	0.5136
X 1 2	0.2345	1	0.2345	0.1312	0.7279
X 2 2	0.6940	1	0.6940	0.3882	0.5530
X 3 2	7.05	1	7.05	3.94	0.0874
Residual	1.79	7	1.79
Lack of fit	3.43	3	3.43	6.21	0.0550
Pure error	0.5531	4	0.5531
Cor total		16
R2 = 0.9229
MCE
Model	68.29	9	7.59	13.12	0.0013
X 1	36.42	1	36.42	62.97	<0.0001
X 2	1.39	1	1.39	2.41	0.1644
X 3	25.24	1	25.24	43.64	0.0003
X 1 X 2	0.0169	1	0.0169	0.0292	0.8691
X 1 X 3	3.94	1	3.94	6.81	0.0349
X 2 X 3	0.0064	1	0.0064	0.0111	0.9192
X 1 2	1.06	1	1.06	1.84	0.2175
X 2 2	0.0343	1	0.0343	0.0593	0.8146
X 3 2	0.1476	1	0.1476	0.2553	0.6289
Residual	4.05	7	0.5784
Lack of fit	2.46	3	0.8197	2.06	0.2478
Pure error	1.59	4	0.3974
Cor total	72.34	16
R2 = 0.9440

X₁, water content (%); X₂, time (min); X₃, temperature (°C); p < 0.01 highly significant; 0.01 ≤ p < 0.05 significant; p ≥ 0.05 not significant.