Table 5: Regression coefficients of the predicted quadratic polynomial model for response variables of the IV mg/g for the MEOA.

VariablesCoefficients ( 𝛽 ), IV mg/g (Y3)TPNotability

Intercept56.243.420.0489 **
Linear
X1−18.8221.450.0017 ***
X2−8.913.870.0849
X3−10.575.470.0474 **
Quadratic
X118.060.840.3865
X224.150.310.5935
X33−4.410.420.5369
Interaction
X1211.593.500.0985
X1310.812.920.1259
X235.420.610.4580
R20.79

Notes: X1 = amount of H2O2; X2 = catalyst Novozym 435; X3 = reaction time;
** 𝑃 < 0 . 0 5 ; *** 𝑃 < 0 . 0 1 . T: F test value.
See Table 2 for a description of the abbreviations.