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Table 5 Regression coefficients, estimated effect and % of contribution for cholesterol oxidase production by Streptomyces cavourensis strain NEAE-42 using Plackett-Burman design

From: Identification and statistical optimization of fermentation conditions for a newly isolated extracellular cholesterol oxidase-producing Streptomyces cavourensis strain NEAE-42

Term

Coefficient

Effect

% Contribution

Intercept

2.327

4.654

 

A

−0.256

−0.511

3.991

B

0.417

0.834

6.513

C

−0.981

−1.962

15.323

D

0.177

0.355

2.770

E

0.802

1.603

12.521

F

−0.422

−0.845

6.598

G

0.133

0.267

2.083

H

0.787

1.574

12.293

J

−0.314

−0.628

4.903

K

0.758

1.516

11.842

L

0.890

1.781

13.909

M

0.064

0.128

0.997

N

−0.205

−0.411

3.209

O

0.141

0.283

2.210

P

0.054

0.107

0.838