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Table 1 The estimated parameters of variables in Plackett-Burman factorial design

From: High-level production of γ-cyclodextrin glycosyltransferase in recombinant Escherichia coli BL21 (DE3): culture medium optimization, enzymatic properties characterization, and product specificity analysis

Code

Terms

Stdized effects

% Contribution

F value

p value

 

Model

  

15.52

0.0093

A

Sucrose

−6869.62

4.73

5.33

0.0082

B

Yeast extract

25998.41

67.74

76.32

0.0009

C

K2SO4

1014.94

0.10

0.12

0.7502

D

MgSO4

8952.89

8.03

9.05

0.0396

E

NiSO4

−12073.70

14.61

16.46

0.0154

F

KH2PO4

−3497.02

1.23

1.38

0.3051

G

K2HPO4

−272.78

0.0075

0.0084

0.9314