Table 2. Results of the regression analysis using the 22-full orthogonal design with 3 repetitions at the center point.

Term

Coefficient

t-statistic

p-value

Intercept

42.35

10.97

<0.005

CTAB (A)

-3.07

-0.65

0.12

Butanol (B)

5.79

1.22

0.03

AB

5.67

0.84

0.07

AA

-18.72

-3.32

0.005

BB

-13.32

-2.36

0.01

 

Supported by UNESCO / MIRCEN network