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Table 2 Chemical components of untreated wood chips, solid substrates, and pretreatment hydrolysate

From: Lignosulfonate-mediated cellulase adsorption: enhanced enzymatic saccharification of lignocellulose through weakening nonproductive binding to lignin

Untreated wood chips Solid substrates Pretreatment hydrolysate (mg/mL)
Poplar (100 g) Lodgepole pine (100 g) SP-Po-A 1 B 4 (73.5 g) SP-Lp-A 1 B 8 (58.6 g) SP-Po-A 1 B 4 (300 mL) SP-Lp-A 1 B 8 (300 mL)
Klason lignin 23.5% Klason lignin 28.6% Klason lignin 26.2% Klason lignin 34.7% LS as Klason lignin 12.5 LS as Klason lignin 27.5
Glucan 40.7% Glucan 41.9% Glucan 48.4% Glucan 57.4% Mono- and oligosaccharides Mono- and oligosaccharides
Xylan 16.4% Xylan 5.5% Xylan 4.38% Xylan 1.5% Glucose 3.97 Glucose 9.83
Mannan 3.8% Mannan 11.7% Mannan 1.48% Mannan 0.6% Xylose 41.00 Xylose 8.07
   Sulfonic acid groups Sulfonic acid groups Mannose 4.39 Mannose 21.88
Inhibitors Inhibitors
4.22 mg/g substrate 10.85 mg/g substrate
Zeta potential at pH 4.8 Zeta potential at pH 4.8 Formic acid 24.58 Formic acid 17.05
Acetic acid 10.65 Acetic acid 18.66
−18.5 mv −21.3 mv Furfural 1.97 Furfural 4.17
HMF 0.19 HMF 5.00
  1. HMF, hydroxymethylfurfural; LS, lignosulfonate.