Phosphate removal combined with acetate supplementation enhances lipid production from water hyacinth by Cutaneotrichosporon oleaginosum

Table 4 Analysis of variances for lipid content

Source	Sum of squares	df	Mean square	F value	P value Prob > F
Model	868.12	5	173.62	348.02	< 0.0001
A-KH₂PO₄	717.23	1	717.23	1437.66	< 0.0001
B-HAc	58.91	1	58.91	118.08	< 0.0001
AB	5.76	1	5.76	11.55	0.0115
A²	79.72	1	79.72	159.79	< 0.0001
B²	1.09	1	1.09	2.18	0.1833
Residual	3.49	7	0.50
Lack of fit	2.60	3	0.87	3.89	0.1114
Pure error	0.89	4	0.22
Corrected total	871.61	12
R ²	0.9960
Adjusted R²	0.9931
Predicted R²	0.9749
Adequate precision	58.6297

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