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Table 3 Concentrations of sugars, degradation products and WIS in the pretreated material

From: Ethanol and biogas production after steam pretreatment of corn stover with or without the addition of sulphuric acid

Catalyst WIS in slurry Content in WIS (% of dry weight) Concentration in the liquid fraction (g/l)
(%) Glucan Xylan Lignina Glucoseb Xyloseb Acetic acid HMF Furfural Formic acid
None 8.9 53.9 4.1 27.9 3.7 8.8 5.3 0.2 1.0 2.7
0.2% H2SO4 9.7 55.9 2.8 26.9 4.5 18.3 5.9 0.5 2.9 0.8
  1. a Acid-soluble lignin included, b Monomers and oligomers.