Table 2.

Analysis of variance (ANOVA) for the experimental results obtained using microwave-assisted extraction (MAE) a) TPC (mg GAE/g extract), b) DPPH inhibition (%), c) ABTS inhibition (%), d) FRAP (mg TE/g extract).

Source	Sum of Squares	df	Mean Square	F-Value	p-value Prob > F
a)
Model	1.322E+005	9	14687.80	125.23	<0.0001
X1-time	1716.53	1	1716.53	14.64	0.0065
X2-S/S ratio	1545.70	1	1545.70	13.18	0.0084
X3-ethanol %	93349.88	1	93349.88	795.92	< 0.0001
X1X2	3.50	1	3.50	0.030	0.8678
X1X3	2.63	1	2.63	0.022	0.8853
X2X3	1334.20	1	1334.20	11.38	0.0119
$X_1^2$	153.61	1	153.61	1.31	0.2901
$X_2^2$	315.62	1	315.62	2.69	0.1449
$X_3^2$	34163.22	1	34163.22	291.28	< 0.0001
Model	821.00	7	117.29
Lack of Fit	615.43	3	205.14	3.99	0.1072
Pure Error	205.57	4	51.39
Cor Total	1.330E+005	16
C.V. %	5.17
PRESS	10168.15
Adeq precision	32.059
R2	0.9938
Adj R2	0.9859
Pred R2	0.9236
b)
Model	2878.39	9	319.82	68.12	<0.0001
X1-time	8.17	1	8.17	1.74	0.2286
X2-S/S ratio	38.58	1	38.58	8.22	0.0241
X3-ethanol %	1589.78	1	1589.78	338.62	< 0.0001
X1X2	34.02	1	34.02	7.25	0.0310
X1X3	101.15	1	101.15	21.54	0.0024
X2X3	4.30	1	4.30	0.92	0.3702
$X_1^2$	55.23	1	55.23	11.76	0.0110
$X_2^2$	41.67	1	41.67	8.88	0.0205
$X_3^2$	1000.94	1	1000.94	213.19	< 0.0001
Residual	32.86	7	4.69
Lack of Fit	21.11	3	7.04	2.39	0.2091
Pure Error	11.76	4	2.94
Cor Total	2911.26	16
C.V. %	3.34
PRESS	356.10
Adeq precision	25.756
R2	0.9887
Adj R2	0.9742
Pred R2	0.8777
c)
Model	3477.55	9	386.39	52.61	<0.0001
X1-time	174.43	1	174.43	23.75	0.0018
X2-S/S ratio	329.21	1	329.21	44.82	0.0003
X3-ethanol %	2195.99	1	2195.99	298.99	< 0.0001
X1X2	15.62	1	15.62	2.13	0.1881
X1X3	40.16	1	40.16	5.47	0.0520
X2X3	30.37	1	30.37	4.14	0.0815
$X_1^2$	48.93	1	48.93	6.66	0.0364
$X_2^2$	86.06	1	86.06	11.72	0.0111
$X_3^2$	589.42	1	589.42	80.25	< 0.0001
Residual	51.41	7	7.34
Lack of Fit	37.83	3	12.61	3.71	0.1188
Pure Error	13.59	4	3.40
Cor Total	3528.96	16
C.V. %	3.59
PRESS	626.43
Adeq precision	24.097
R2	0.9854
Adj R2	0.9667
Pred R2	0.8225
d)
Model	7996.09	9	888.45	57.76	<0.0001
X1-time	283.80	1	283.80	18.45	0.0036
X2-S/S ratio	1192.87	1	1192.87	77.55	< 0.0001
X3-ethanol %	5113.45	1	5113.45	332.43	< 0.0001
X1X2	155.63	1	155.63	10.12	0.0155
X1X3	24.53	1	24.53	1.59	0.2471
X2X3	396.93	1	396.93	25.81	0.0014
$X_1^2$	26.61	1	26.61	1.73	0.2298
$X_2^2$	27.83	1	27.83	1.81	0.2206
$X_3^2$	772.98	1	772.98	50.25	0.0002
Residual	107.67	7	15.38
Lack of Fit	56.39	3	18.80	1.47	0.3502
Pure Error	51.28	4	12.82
Cor Total	8103.76	16
C.V. %	3.79
PRESS	982.40
Adeq precision	28.675
R2	0.9867
Adj R2	0.9696
Pred R2	0.8788