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Table 1 13C-IS py-GC–MS relative abundance of residual lignin compounds of control and fungal-treated wheat straw after 7 weeks of growth

From: Mechanistic insight in the selective delignification of wheat straw by three white-rot fungal species through quantitative 13C-IS py-GC–MS and whole cell wall HSQC NMR

 

Control

Cs1

Cs12

Pe3

Pe6

Le8

Le10

Lignin subunits (%)

 H

9.6 ± 0.4

12.0 ± 0.7

12.1 ± 0.3

10.0 ± 0.7

10.1 ± 0.8

11.1 ± 0.5

11.3 ± 0.5

 G

62.2 ± 0.7

62.1 ± 0.5

59.3 ± 0.3

62.8 ± 1.4

63.3 ± 0.3

64.2 ± 0.2

63.0 ± 0.6

 S

28.2 ± 0.5

26.0 ± 0.4

28.6 ± 0.1

27.2 ± 0.8

26.7 ± 0.9

24.7 ± 0.4

25.6 ± 0.1

  S/G

0.45 ± 0.0

0.42 ± 0.0

0.48 ± 0.0

0.43 ± 0.0

0.42 ± 0.0

0.38 ± 0.0

0.41 ± 0.0

Structural moieties (%)

 Unsubstituted

4.2 ± 0.2

9.4 ± 0.5

9.4 ± 0.4

6.1 ± 0.4

5.8 ± 0.0

7.1 ± 0.4

7.7 ± 0.4

 Methyl

2.0 ± 0.0

3.2 ± 0.3

3.4 ± 0.2

2.6 ± 0.1

2.5 ± 0.2

2.9 ± 0.1

2.9 ± 0.1

 Vinyl

30.6 ± 1.0

30.1 ± 1.7

30.3 ± 0.3

29.6 ± 0.1

31.6 ± 1.2

31.7 ± 0.6

31.3 ± 0.7

  4-VPa

7.8 ± 0.4

7.7 ± 0.5

7.8 ± 0.3

7.3 ± 0.4

7.8 ± 0.6

7.8 ± 0.3

7.9 ± 0.4

  4-VGb

20.3 ± 0.7

20.4 ± 1.1

20.3 ± 0.0

19.9 ± 0.6

21.4 ± 0.6

21.7 ± 0.4

21.0 ± 0.7

 Cα-ox

3.7 ± 0.1

13.6 ± 0.6

14.7 ± 0.7

6.0 ± 0.3

5.2 ± 0.3

6.6 ± 0.1

6.9 ± 0.3

  Cα-ox G

2.0 ± 0.1

8.0 ± 0.3

8.1 ± 0.4

3.2 ± 0.2

2.7 ± 0.2

3.9 ± 0.1

4.0 ± 0.2

  Cα-ox S

1.6 ± 0.0

5.6 ± 0.3

6.6 ± 0.3

2.7 ± 0.2

2.5 ± 0.1

2.7 ± 0.0

3.0 ± 0.1

  Acetaldehyde

0.4 ± 0.0

7.7 ± 0.4

7.9 ± 0.5

1.9 ± 0.2

1.9 ± 0.2

2.7 ± 0.1

2.9 ± 0.2

 Cβ-ox

1.4 ± 0.0

2.5 ± 0.1

2.7 ± 0.1

1.7 ± 0.1

1.6 ± 0.0

1.8 ± 0.0

1.8 ± 0.0

 Cγ-ox

54.8 ± 0.9

45.3 ± 2.3

43.9 ± 1.4

52.1 ± 0.6

51.4 ± 1.4

48.8 ± 0.6

48.6 ± 0.6

 Miscellaneous

3.3 ± 0.1

3.5 ± 0.1

3.5 ± 0.1

3.9 ± 0.1

3.5 ± 0.5

3.8 ± 0.1

3.8 ± 0.2

 PhC cγ

58.5 ± 1.0

50.0 ± 2.3

48.7 ± 0.8

56.6 ± 0.6

55.4 ± 1.6

53.3 ± 0.6

53.0 ± 0.5

 PhCγ-acetaldehyded

58.1 ± 0.9

42.4 ± 2.3

40.8 ± 1.3

54.7 ± 0.8

53.9 ± 1.7

50.6 ± 0.7

50.2 ± 0.3

  1. Corrected for RRF and relative abundance of 13C analogues. Sum on the bases of structural classification according to Additional file 2: Table S1. Average and standard deviation of analytical triplicates on pooled biological triplicates. No statistical analysis was applied
  2. Cs  Ceriporiopsis subvermispora, Pe  Pleurotus eryngii, Le  Lentinula edodes
  3. a4-Vinylphenol
  4. b4-Vinylguaiacol
  5. cPhenols with intact α, β, and γ carbon side chain
  6. dPhenols with intact α, β, and γ carbon side chain, excluding acetaldehydes
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Biotechnology for Biofuels and Bioproducts

ISSN: 2731-3654

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