Table 1 Parametric estimates and confidence intervals (α = 0.05) corresponding to equation (1) applied to the effect of formic and acetic acids on bacterial growth as optical density at 700 nm.

X _m (AU)

6.40 ± 0.10

1.15 ± 0.01

2.67 ± 0.04

1.19 ± 0.01

0.79 ± 0.01

6.23 ± 0.13

1.01 ± 0.03

2.87 ± 0.06

0.97 ± 0.03

0.80 ± 0.02

growth model

v _m (AU h^-1)

0.49 ± 0.03

0.18 ± 0.01

0.70 ± 0.04

0.27 ± 0.01

0.11 ± 0.01

0.51 ± 0.03

0.19 ± 0.02

0.69 ± 0.06

0.12 ± 0.01

0.11 ± 0.06

λ (h)

3.62 ± 0.29

1.81 ± 0.21

0.91 ± 0.16

1.32 ± 0.11

0.94 ± 0.21

3.19 ± 0.40

1.40 ± 0.21

0.52 ± 0.21

0.77 ± 0.28

0.79 ± 0.18

K _x

0.87 ± 0.11

0.98 ± 0.03

0.81 ± 0.05

1.00 ± 0.01

0.83 ± 0.10

NS

0.37 ± 0.17

0.74 ± 0.24

1.00 ± 0.52

0.87 ± 0.11

effect on X _m

m _x (mM)

35.95 ± 34.50

25.96 ± 1.02

18.23 ± 16.24

29.04 ± 1.30

5.59 ± 1.09

NS

15.78 ± 12.80

48.68 ± 16.29

71.35 ± 55.67

7.09 ± 6.92

a _x

29.01 (NS)

2.34 ± 0.26

22.14 ± 12.99

1.15 ± 0.07

2.44 ± 0.94

NS

0.99 ± 0.43

2.30 ± 0.40

1.10 ± 0.26

5.60 ± 5.51

K _v

0.99 ± 0.02

0.99 ± 0.01

1.02 ± 0.15

1.00 ± 0.01

0.98 ± 0.01

NS

0.98 ± 0.02

0.99 ± 0.03

1.00 ± 0.05

1.00 ± 0.02

effect on v _m

m _v (mM)

35.89 ± 35.02

18.91 ± 2.18

18.36 ± 1.26

15.83 ± 1.71

3.80 ± 0.20

NS

16.94 ± 2.15

25.58 ± 2.40

63.46 ± 5.95

5.66 ± 0.28

a _v

23.92 (NS)

1.47 ± 0.25

2.12 ± 0.27

0.83 ± 0.10

3.11 ± 0.70

NS

1.00 ± 0.12

2.81 ± 0.97

2.47 ± 2.09

3.07 ± 0.87

K _λ

NS

0.39 ± 0.33

NS

2.40 ± 2.73

NS

NS

NS

NS

NS

NS

effect on λ

m _λ (mM)

NS

4.10 ± 2.19

NS

61.10 ± 41.26

NS

NS

NS

NS

NS

NS

a _λ

NS

1.78 ± 1.09

NS

6.64 ± 5.38

NS

NS

NS

NS

NS

NS

p-value

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

< 0.001

Bf

1.01

0.92

1.07

1.00

0.92

1.05

1.00

1.00

1.15

1.16

Af

1.18

1.26

1.16

1.19

1.21

1.20

1.13

1.12

1.21

1.38

R²_adj

0.993

0.997

0.994

0.998

0.994

0.989

0.990

0.986

0.989

0.995