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Table 2 Summary of prefermentation results

From: Prefermentation improves ethanol yield in separate hydrolysis and cofermentation of steam-pretreated wheat straw

  Severe wheat straw slurry Mild wheat straw slurry
Batch Fed-batch Batch Fed-batch
Residual sugars and end-products [g·L−1]
 Glucose 0.1 0.1 0.0 0.1
 Xylose 6.4 14.4 3.7 7.3
 Ethanol 11.2 8.4 12.1 11.2
 Xylitol 2.9 0.6 3.8 0.4
Metabolic ethanol yield [g·g−1]a 0.329 0.322 0.342 0.353
 % of theoretical 64.4 63.1 67.1 69.2
 Xylose utilization [%] 77.3 48.6 88.2 76.9
 Xylitol yield [g·g−1]b 0.136 0.041 0.137 0.017
  1. aBased on consumed glucose and xylose and related to a maximum theoretical yield of 0.51 g·g−1
  2. bBased on consumed xylose