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Table 3 Enzymatic saccharification and products in pretreatment liquor of raw and pretreated A. donax

From: Facile isothermal solid acid catalyzed ionic liquid pretreatments to enhance the combined sugars production from Arundo donax Linn.

Samples Enzymatic hydrolysis Pretreatment liquora
Initial enzymatic rate (g/kg/h)b Reducing sugar (g/100 g)c Cellulose digestibility (%)d TRS (%) ASL (%) Lactic acid (%) Acetic acid (%) Formic acid (%) HMF (%) FF (%)
Raw 17 9.7 12.5
R90-1.0 87 24.6 36.7 2.9 0.8 4.98 NDe ND ND ND
R100-1.0 57 25.7 41.9 5.1 1.4 4.90 ND ND ND ND
R110-1.0 92 29.6 66.7 28.8 2.6 4.70 ND ND ND ND
R120-0.5 146 30.9 66.7 18.1 2.4 4.96 ND ND ND ND
R120-1.0 167 21.9 73.2 31.8 3.7 4.96 ND ND ND ND
R120-1.5 226 15.3 90.2 43.0 5.8 5.94 ND ND ND ND
R130-0.5 149 26.4 65.2 23.5 3.3 5.06 ND ND ND ND
R140-0.5 177 11.5 69.6 40.4 5.8 5.72 ND ND ND ND
R150-0.5 92 3.9 41.0 35.2 6.1 5.56 ND ND ND ND
  1. All data are means of three replicates
  2. aData referred to the products in pretreatment liquor are based on dry raw materials
  3. bSugar released within the first 3 h based on dry pretreated sample
  4. cSum of glucose and xylose released in the enzymatic hydrolysates based on dry raw materials
  5. dData are calculated after 72 h of enzymatic hydrolysis at 48 °C
  6. eNo detectable levels (below 0.1 % based on dry raw materials)