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Table 2 Ethanol yields and concentrations of metabolites obtained after 96 h

From: Prefermentation improves xylose utilization in simultaneous saccharification and co-fermentation of pretreated spruce

SSF mode WIS Prefermentation Xylose consumption1
%
Xylitol
%2 (g L-1)
Glycerol
g L-1
Ethanol yield
g g-1
Ethanol yield
% of theoretical
Ethanol
g L-1
Batch 7% No 77 27 (0.91) 2.9 0.44 86 32.0
Batch 7% Yes 84 24 (0.86) 3.4 0.46 91 33.9
Batch 10% No 16 27 (0.29) 3.6 0.38 75 39.6
Batch3 10% Yes 31 24 (0.49) 3.6 0.41 81 43.0
Batch3 10% Yes 42 23 (0.68) 4.8 0.41 80 42.3
Fed-batch 10% No 56 24 (0.92) 3.9 0.43 85 45.0
Fed-batch 10% Yes 77 22 (1.16) 4.2 0.43 85 45.2
  1. 1Related to total amount of available xylose.
  2. 2Xylitol formation related to consumed xylose.
  3. 3Batch experiment with prefermentation at 10% was run in duplicates.