Optimization of Drying Parameters for Total Phenolic Content of Papaya Using Response Surface Methodology

Table 3

ANOVA for TPC.

Source	DoF	Sum of squares	Mean squares	value	value
Model	17	1173.62	69.037	29.93	<0.001
Linear	5	866.55	173.310	75.13	<0.001
	1	1.86	1.864	0.81	0.374
	1	646.86	646.857	280.40	<0.001
	1	10.18	10.183	4.41	0.042
	2	207.64	103.822	45.01	<0.001
Square	3	249.43	83.144	36.04	<0.001
	1	5.81	5.811	2.52	0.120
	1	111.88	111.875	48.50	<0.001
	1	13.75	13.754	5.96	0.019
2-way interaction	9	57.64	6.405	2.78	0.012
	1	0.39	0.386	0.17	0.685
	1	25.59	25.591	11.09	0.002
	2	14.01	7.004	3.04	0.059
	1	2.61	2.609	1.13	0.294
	2	11.11	5.555	2.41	0.102
	2	3.94	1.969	0.85	0.433
Error	42	96.89	2.307
Lack-of-fit	27	62.13	2.301	0.99	0.523
Pure error	15	34.76	2.317
Total	59	1270.51
: 0.9237	Adjusted : 0.8929			Predicted : 0.8394
Adequate precision: 10.92