Title of article :
Consolidated bioprocessing of untreated switchgrass to hydrogen by the extreme thermophile Caldicellulosiruptor saccharolyticus DSM 8903
Author/Authors :
Talluri، نويسنده , , Suvarna and Raj، نويسنده , , Subramanian Mohan and Christopher، نويسنده , , Lew Paul، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2013
Pages :
8
From page :
272
To page :
279
Abstract :
The abilities of the extreme thermophilic bacterium Caldicellulosiruptor saccharolyticus DSM 8903 to ferment switchgrass (SWG), microcrystalline cellulose (MCC) and glucose to hydrogen (H2) in one-step were examined. Hydrogen production from glucose reached the theoretical maximum for dark fermentation of 4 mol H2/mol glucose. The H2 yield on MCC and SWG after 6 days of fermentation was 23.2 mmol H2/L or 9.4 mmol H2/g MCC and 14.3 mmol H2/L or 11.2 mmol H2/g SWG, respectively. The rate of H2 formation however was higher on MCC (0.7 mmol/L h) than SWG (0.1 mmol/L h). C. saccharolyticus DSM 8903 was able to produce H2 directly from mechanically-comminuted SWG without any physicochemical or biological pretreatment. Combining four processing steps (pretreatment, enzyme production, saccharification and fermentation) into a single biorefinery operation makes C. saccharolyticus DSM 8903 a promising candidate for consolidated bioprocessing (CBP) of lignocellulosic biomass.
Keywords :
Hydrogen , Untreated switchgrass , Extreme thermophiles , Caldicellulosiruptor saccharolyticus DSM 8903 , Consolidated bioprocessing
Journal title :
Bioresource Technology
Serial Year :
2013
Journal title :
Bioresource Technology
Record number :
1932969
Link To Document :
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