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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