Optimization of Microwave-Assisted Extraction Method for Increased Extraction Yield and Total Phenol Content from Moringa Leaves (Moringa oleifera Lam.) var. PKM 1

Table 4

Regression coefficients and ANOVA estimated for total phenol content of MAE moringa leaf extract.

Source	Sum of squares	df	F value	value
Model	343.38	9	144.12	<0.0001	Significant
A-power	3.13	1	11.84	0.0063
B-temperature	17.5	1	66.12	<0.0001
C-time	2.88	1	10.89	0.0080
AB	0.012	1	0.0454	0.8356
AC	18.57	1	70.16	<0.0001
BC	3.99	1	15.07	0.0030
A^2	142.91	1	539.81	<0.0001
B^2	55.74	1	210.53	<0.0001
C^2	1.47	1	5.56	0.0401
Residual	2.65	10
Lack of fit	1.74	5	1.91	0.2478	Not significant
Pure error	0.9106	5
Cor total	346.03	19
R^2	0.9923
Adjusted R^2	0.9855
Predicted R^2	0.9586