Production of Chemoenzymatic Catalyzed Monoepoxide Biolubricant: Optimization and Physicochemical Characteristics

Table 4

Regression coefficients of the predicted quadratic polynomial model for response variables of the OOC% for the MEOA.

Variables	Coefficients (𝛽), OOC% (Y2)	T	P	Notability
Intercept	5.59	2.00	0.1717
Linear
X1	1.00	12.15	0.0082	***
X2	0.58	3.25	0.1091
X3	0.51	2.54	0.1494
Quadratic
X11	−0.37	0.36	0.5626
X22	−0.099	0.036	0.8546
X33	0.31	0.41	0.5404
Interaction
X12	−0.22	0.26	0.6267
X13	−0.55	1.50	0.2553
X23	−0.27	0.31	0.5934
R^2	0.69

Notes: X₁ = amount of H₂O₂; X₂ = catalyst Novozym 435; X₃ = reaction time;
** 𝑃<0.05; ***𝑃<0.01. T: F test value.
See Table 2 for a description of the abbreviations.