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. 2016 Mar 2;7:218. doi: 10.3389/fmicb.2016.00218

Table 1.

The central-composite design for optimizing MtEst45 activity.

X1 X2 Y
1 45.00 8.00 3.467
2 35.00 8.50 2.399
3 45.00 8.00 3.549
4 45.00 8.00 3.449
5 30.86 8.00 1.780
6 45.00 8.00 3.482
7 45.00 7.29 2.544
8 55.00 7.50 2.713
9 35.00 7.50 1.482
10 59.00 8.00 2.254
11 45.00 8.00 3.497
12 55.00 8.50 2.692
13 45.00 8.71 3.289

X1, Temperature (°C); X2, pH; Y, p-nitrophenol (μg).