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Table 1 Effect of alkaline pretreatment on Miscanthus biomass.

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

Alkali pH Insoluble fraction Lignin, % of insoluble fraction
   % of initial dry matter Acid-insoluble Acid-soluble
None - 100 21.9 0.8
Ca(OH)2 10.8 87 24.4 0.8
NaOH 11.5 64 12.9 0.6
  1. The pH of Miscanthus biomass after the addition of 0.10 g g-1 Ca(OH)2 or 0.09 g g-1 NaOH at the start of pretreatment at 85°C for 16 h, and the fraction recovered as insoluble material after pretreatment with the lignin content.