Production of Chemoenzymatic Catalyzed Monoepoxide Biolubricant: Optimization and Physicochemical Characteristics

Table 5

Regression coefficients of the predicted quadratic polynomial model for response variables of the IV mg/g for the MEOA.

Variables	Coefficients (𝛽), IV mg/g (Y3)	T	P	Notability
Intercept	56.24	3.42	0.0489	**
Linear
X1	−18.82	21.45	0.0017	***
X2	−8.91	3.87	0.0849
X3	−10.57	5.47	0.0474	**
Quadratic
X11	8.06	0.84	0.3865
X22	4.15	0.31	0.5935
X33	−4.41	0.42	0.5369
Interaction
X12	11.59	3.50	0.0985
X13	10.81	2.92	0.1259
X23	5.42	0.61	0.4580
R^2	0.79

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.