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Table 3 Relative abundances of lignin-derived compounds released after py–GC/MS from unextracted, raw sugarcane culm and leaf tissue

From: Relationship between sugarcane culm and leaf biomass composition and saccharification efficiency

Compounda Origin FIJI_62 MQ239 Q124 Q208 QBN13-10020 SRA1 SRA5 FIJI_62 MQ239 Q124 Q208 QBN13-10020 SRA1 SRA5
Culm Leaf
2-Methoxy-5-(1-propenyl)phenol G 0.4 0.3 0.3 0.3 0.5 0.2 0.3 0.4 0.4 0.4 0.3 0.4 0.2 0.3
4-Ethylguaiacol G 0.5 0.6 0.5 0.6 0.7 0.4 0.5 0.5 0.7 0.8 0.6 0.8 0.5 0.5
4-Methoxy-3-methoxymethyl phenol G 1.5 1.3 1.6 1.3 2.0 1.2 1.6 0.8 0.8 0.8 0.5 0.9 0.4 1.4
4-Propenylguaiacol G 1.8 1.8 1.2 1.3 1.9 1.1 1.7 1.6 1.6 1.8 1.3 1.6 0.9 1.3
4-Vinylguaiacol G 6.4 6.5 6.1 5.0 8.4 3.8 6.3 8.3 9.7 10.1 7.9 9.3 4.0 5.3
Guaiacol G 2.0 2.5 1.6 1.4 2.4 1.1 1.7 2.1 2.4 2.6 2.0 2.4 2.6 1.5
Isovanillin G 0.8 0.8 0.9 0.6 1.2 0.4 0.8 0.7 0.7 0.9 0.7 1.0 0.3 0.5
4-Vinylphenol H 9.1 6.4 12.7 9.1 13.0 5.5 10.2 6.7 5.3 6.5 4.7 6.0 2.7 4.2
4-Allylsyringol S 5.4 5.4 7.0 6.2 8.5 4.5 6.7 3.9 2.6 2.7 2.0 3.1 2.0 2.1
Acetosyringone S 0.7 0.8 0.2 0.8 1.2 0.6 0.9 0.7 0.7 0.2 0.6 0.8 0.1 0.6
Syringol S 4.8 4.6 6.0 5.2 7.5 2.7 5.9 2.4 1.7 2.6 1.9 2.1 1.2 1.4
S/G ratio ± SD   1.6 ± 0.1 1.5 ± 0.1 2.1 ± 0.2 2.2 ± 0 2.0 ± 0.1 1.7 ± 0.27 2 ± 0.2 1.1 ± 0.03 0.77 ± 0.12 0.76 ± 0.18 0.81 ± 0.15 0.85 ± 0.05 0.65 ± 0.15 0.75 ± 0.13
  1. a4-vinylguaiacol and 4-vinylphenol were not used to estimate the ratio of syringyl (S) to guaiacyl (G) units (S/G ratio) and p-hydroxyphenyl (H) content, respectively, because they predominantly arise from ferulates and p-coumarate esters [53]