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Table 4 Analysis of the main variables affecting phytase production by Student's test

From: Heterologous expression and optimization using experimental designs allowed highly efficient production of the PHY US417 phytase in Bacillus subtilis 168

  Non standardized Coefficients Standardized Coefficients t Significance
  B Standard Error Bêta   
Coefficients -131.98 37.153   -3.552 0.009
x1 1.09 0.294 5.024 3.694 0.007
x3 0.46 1.744 0.250 2.621 0.034
x12 -0.002 0 -4.630 -3.314 0.013
x22 -0.12 0,053 -1.121 -2.192 0.064
x1x2 0.10 0.004 1.415 2.606 0.035