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. 2021 May 25;11(31):18915–18929. doi: 10.1039/d1ra01411k

Independent variable levels for temperature (X1), enzyme (X2), and time (X3), with tested values of the two response variables: % DH (Y1), and lipase inhibition (IC50; μg mL−1) (Y2)a.

Run Space type Coded levels Independent variables Response
X 1 X 2 X 3 X 1 X 2 X 3 Y 1 Y 2
1 Factorial −1 −1 −1 45.00 0.90 120.00 25.03 9.77
2 Factorial +1 −1 −1 55.00 0.90 120.00 30.10 14.33
3 Factorial −1 +1 −1 45.00 2.10 120.00 31.23 11.00
4 Factorial +1 +1 −1 55.00 2.10 120.00 33.91 6.30
5 Factorial −1 −1 +1 45.00 0.90 240.00 30.56 7.06
6 Factorial +1 −1 +1 55.00 0.90 240.00 31.74 14.69
7 Factorial −1 +1 +1 45.00 2.10 240.00 36.13 19.25
8 Factorial +1 +1 +1 55.00 2.10 240.00 36.47 19.68
9 Axial −1.68 0 0 41.59 1.50 180.00 29.34 15.92
10 Axial +1.68 0 0 58.41 1.50 180.00 34.64 18.01
11 Axial 0 −1.68 0 50.00 0.50 180.00 27.83 9.19
12 Axial 0 +1.68 0 50.00 2.50 180.00 39.79 12.50
13 Axial 0 0 −1.68 50.00 1.50 79.09 30.15 7.31
14 Axial 0 0 +1.68 50.00 1.50 280.91 34.93 12.98
15 Center 0 0 0 50.00 1.50 180.00 34.54 3.02
16 Center 0 0 0 50.00 1.50 180.00 35.24 3.83
17 Center 0 0 0 50.00 1.50 180.00 34.36 4.12
18 Center 0 0 0 50.00 1.50 180.00 34.51 3.46
19 Center 0 0 0 50.00 1.50 180.00 33.07 3.65
20 Center 0 0 0 50.00 1.50 180.00 34.89 3.89
a

All tests were performed in triplicate.