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Table 3 Regression of coefficients and analysis of variance (ANOVA) of the first order model for response variables in PBD

From: Co-production of gallic acid and a novel cell-associated tannase by a pigment-producing yeast, Sporidiobolus ruineniae A45.2

Source

Gallic acid

CAT

Viable cell numbers

Coefficient

p-value

Coefficient

p-value

Coefficient

p-value

Estimate

Prob > F

Estimate

Prob > F

Estimate

Prob > F

Model

2.32

< 0.0001

11.7641

0.0011

6.91

0.0006

A-Tannic acid

1.76

< 0.0001*

5.2333

< 0.0001*

0.21

0.0047*

B-Yeast extract

0.045

0.5695

− 1.1269

0.0921

− 0.31

0.0015

C-Glucose

− 0.22

0.0273*

− 2.1026

0.0097*

0.09

0.0879*

D-(NH4)2SO4

− 0.32

0.0047

− 0.7756

0.2173

− 0.18

0.0137

E-Tween80

− 0.39

0.0020

− 2.4072

0.0052

− 0.24

0.0049

F-Glutamate

3.30E−03

0.9658

0.5835

0.3398

0.02

0.6723

G-Time

0.045

0.5695

− 1.3847

0.0491

− 0.51

0.0002*

  1. Gallic acid production: R2 = 0.9823, Adj-R2 = 0.9541, %C.V. = 2.17, lack of fit = 0.0182
  2. CAT production: R2 = 0.9904, Adj-R2 = 0.9737, %C.V. = 10.78, lack of fit = 0.2074
  3. Viable cell production: R2 = 0.9564, Adj-R2 = 0.9056, %C.V. = 11.91, lack of fit = 0.0019
  4. * Significant difference at p < 0.05