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Table 3 Summary of duplicate fed-batch simultaneous saccharification and co-fermentation of wheat straw (8%-11% WIS)

From: Improving simultaneous saccharification and co-fermentation of pretreated wheat straw using both enzyme and substrate feeding

Fed-batch
SSCF
Enzyme feed profile Xylose
consumptiona (%)
Xylitol
formationb (%)
Final ethanol concentration (g L-1) Ethanol yield (g/g) Ethanol yieldc (%)
I A 38 12 33.7 0.31 61
II B 50 8 37.4 0.35 68
III C 46 6 34.9 0.33 65
IV Dd 49 9 38.0 0.35 69
REF No feed 40 7 33.0 0.31 61
  1. In all experiments, a total enzyme load of 36 FPU (g glucan)-1 and a yeast load of 4 g L-1 were used.
  2. a Related to total amount of available xylose.
  3. b Related to consumed xylose.
  4. c Corresponding to the maximum theoretical yield on total available sugars.
  5. d An extra yeast addition (2 g L-1) was made at t = 24 h (see last paragraph in the results section).