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Table 1 Compositions of solid and liquid fractions for three batches of pretreated wheat straw

From: Sustaining fermentation in high-gravity ethanol production by feeding yeast to a temperature-profiled multifeed simultaneous saccharification and co-fermentation of wheat straw

Solid fraction (% WIS) Liquid fraction (g L−1)
  M1a M2a M3   M1a M2 M3
Glucan 47.7 ± 3.5 42.4 ± 1.3 36.2 ± 5.0 Glucose 6.8 2.6 ± 0.1b 4.5 ± 0.2b
Xylan 2.3 ± 0.4 2.6 ± 0.1 4.3 ± 0.1 Xylose 12.8 22.8 ± 1.1b 32.7 ± 1.0b
Mannan 0.2 ± 0.1 0.2 ± 0.1 0.2 ± 0.08 Mannose 0.4 0.5 ± 0.1b 1.1 ± 0.1b
Galactan 0.04 ± 0.01 0 0.01 ± 0.00 Galactose 1.0 1.0 ± 0.2b 1.9 ± 0.1b
Arabinan 0.1 ± 0.01 0.08 ± 0.01 0.2 ± 0.00 Arabinose 2.0 2.8 ± 0.03b 4.2 ± 0.1b
Lignin   41.7 35.6 Acetic acid 3.8 3.2 3.7 ± 0.05
     Furfural 4.0 0.8 1.5 ± 0.04
Total   87.0 76.5 HMF 1.4 0.4 0.3 ± 0.00
  1. All data are average of at least two separate measurements. Data shown are means ± range. M1, M2 and M3 stand for material 1, 2 and 3 received from the SP biorefinery demo plant. The ranges for acetic acid, furfural, and HMF are within 5% of the average
  2. aData from [32]
  3. bMonomeric and oligomeric sugars