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Table 3 Ethanol fermentation performances of different pretreated biomass hydrolysates

From: A comparative study of ethanol production using dilute acid, ionic liquid and AFEX™ pretreated corn stover

Ethanol fermentation Parameter DA IL AFEX
Without nutrient supplementation Metabolic yield (%) 93 90 98
Glucose consumption (%) 100 100 99
Xylose consumption (%) 91 70 84
Maximum glucose consumption rate (g.L−1.h−1) 4.95 5.36 5.72
Maximum xylose consumption rate (g.L−1.h−1) 0.07 0.24 0.47
With nutrient supplementation Metabolic yield (%) 90 93 97
Glucose consumption (%) 100 100 99
Xylose consumption (%) 100 97 94
Maximum glucose consumption rate (g.L−1.h−1) 8.09 8.80 7.30
  Maximum xylose consumption rate (g.L−1.h−1) 0.16 1.18 0.87
  1. Metabolic yield calculated based on the theoretical ethanol yield from consumed glucose and xylose, 0.51 g ethanol/g sugar. AFEX, ammonia fiber expansion; DA, dilute acid; IL, ionic liquid.