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Table 7 Molar yields and maximal volumetric hydrogen productivity (QH2, max) of C. saccharolyticus and T. neapolitana batch cultures grown on a glucose/xylose (7:3, w w-1) mixture and on Miscanthus hydrolysate.

From: Efficient hydrogen production from the lignocellulosic energy crop Miscanthus by the extreme thermophilic bacteria Caldicellulosiruptor saccharolyticus and Thermotoga neapolitana

Mono-saccharides Molar yield QH2, max
  mol (mol C6)-1 g (mol C6)-1  
g l-1 Y H2 Y Ac Y CO2 Y xs mmol l-1 h-1
C. saccharolyticus      
Glc/Xyl      
10 3.4 1.6 1.8 12.2 12.0
14 3.3 1.5 1.7 10.1 13.0
28 2.4 1.1 1.4 6.8 9.7
Hydrolysate      
10 3.4 1.5 1.7 14.0 12.6
14 3.3 1.6 1.8 10.8 10.4
28 2.4 1.2 1.5 9.8 6.2
T. neapolitana      
Glc/Xyl      
10 3.3 1.5 1.7 18.1 14.5
14 3.2 1.4 1.7 9.9 11.9
28 2.5 1.2 1.5 5.0 6.1
Hydrolysate      
10 2.9 1.3 1.5 18.8 13.1
14 3.2 1.4 1.7 11.3 12.3
28 2.0 1.1 1.5 7.4 5.4