Optimization of Oil Yield from the Macro Algae Spirogyra by Solvent Extraction Process Using RSM and ANN

Table 3

ANOVA analysis.

Source	SS	Df	MS	F value	value
Model	199.75	20	9.99	62.85	< 0.0001	Significant
	8.19	1	8.19	51.53	< 0.0001
	1.38	1	1.38	8.68	0.0063
	39.30	1	39.30	247.30	< 0.0001
	8.76	1	8.76	55.13	< 0.0001
	16.92	1	16.92	106.47	< 0.0001
θ1θ2	0.0018	1	0.0018	0.0111	0.9169
θ1θ3	0.1504	1	0.1504	0.9462	0.3387
θ1θ4	0.0358	1	0.0358	0.2255	0.6385
θ1θ5	0.3365	1	0.3365	2.12	0.1563
θ2θ3	0.0351	1	0.0351	0.2206	0.6421
θ2θ4	0.0006	1	0.0006	0.0035	0.9533
θ2θ5	0.1349	1	0.1349	0.8490	0.3644
θ3θ4	0.6062	1	0.6062	3.81	0.0605
θ3θ5	1.47	1	1.47	9.22	0.0050
θ4θ5	0.0053	1	0.0053	0.0332	0.8567
θ1^2	6.27	1	6.27	39.44	< 0.0001
θ2^2	0.0300	1	0.0300	0.1888	0.6671
θ3^2	0.0411	1	0.0411	0.2585	0.6150
θ4^2	0.0459	1	0.0459	0.2887	0.5952
θ5^2	8.20	1	8.20	51.58	< 0.0001
Residual	4.61	29	0.1589
Lack of fit	3.75	22	0.1704	1.39	0.3440	Not significant
Pure error	0.8595	7	0.1228
Cor total	204.36	49
R^2	0.9854		Adj R^2	0.9752
C. V %	1.76