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Table 3 Substrate screen for laccase activity and IC decolorization Change of absorbance (ΔA): + (change of absorbance), - (no change of absorbance).

From: Bacillus pumiluslaccase: a heat stable enzyme with a wide substrate spectrum

Structure

Compound

n°

∆A

IC

R1 = R2 = H

1

-

0

 

R1 = H, R2 = OH

2

-

0

 

R1 = OH, R2 = H

3

-

0

 

R1 = R2 = OH

4

+

0

 

R1 = OH, R2 = OCH3

5

+

25

R1 = OH, R2 = R3 = H

6

-

0

 

R1 = R2 = OH, R3 = H

7

+

0

 

R1 = R2 = R3= OH

8

+

0

 

R1 = OH, R2 = R3= OCH3

9

+

0

 

R1 = OH, R2 = NH2, R3 = H

10

+

0

 

R1 = NH2, R2 = OH, R3 = H

11

+

0

 

R1 = OH, R2 = F, R3 = H

12

-

0

R1 = OH, R2 = H

13

-

0

 

R1 = OH, R2 = OCH3

14

+

40

 

R1 = OCH3, R2 = OH

15

+

0

 

16

-

0

R = H

17

-

0

 

R = OCH3

18

+

>99

R1 = OH, R2 = R3 = H

19

-

0

 

R1 = H, R2 = OH, R3 = OCH3

20

+

>99

 

21

+

0

 

22

-

0

R = H

23

-

0

 

R = OH

24

+

0

R = H

25

-

0

 

R = OH

26

-

0

R1 = R2 = R3 = H

27

-

0

 

R1 = R3 = H, R2 = CH3

28

-

0

 

R1 = R3 = CH3, R2 = H

29

-

0

 

R1 = OH, R2 = R3 = H

30

+

0

 

R1 = OH, R2 = CH3, R3 = H

31

+

0

 

R1 = R3 = OH, R2 = H

32

+

0

 

R1 = R3 = H, R2 = β-O-Gluc

33

-

0

 

34

+

0

 

35

-

0

 

36

-

0

 

37

+

>99

  1. Indigocarmine decolorization (%) (IC) is given compared to the control reaction lacking laccase.