Abstract：
:Fermentation of sulfuric acid treated corn fiber hydrolysate (SACFH) inhibited cell growth and butanol production (1.7+/-0.2g/L acetone butanol ethanol or ABE) by Clostridium beijerinckii BA101. Treatment of SACFH with XAD-4 resin removed some of the inhibitors resulting in the production of 9.3+/-0.5 g/L ABE and a yield of 0.39+/-0.015. Fermentation of enzyme treated corn fiber hydrolysate (ETCFH) did not reveal any cell inhibition and resulted in the production of 8.6+/-1.0 g/L ABE and used 24.6g/L total sugars. ABE production from fermentation of 25 g/L glucose and 25 g/L xylose was 9.9+/-0.4 and 9.6+/-0.4 g/L, respectively, suggesting that the culture was able to utilize xylose as efficiently as glucose. Production of only 9.3+/-0.5 g/L ABE (compared with 17.7 g/L ABE from fermentation of 55 g/L glucose-control) from the XAD-4 treated SACFH suggested that some fermentation inhibitors may still be present following treatment. It is suggested that inhibitory components be completely removed from the SACFH prior to fermentation with C. beijerinckii BA101. In our fermentations, an ABE yield ranging from 0.35 to 0.39 was obtained, which is higher than reported by the other investigators.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Qureshi N,Ezeji TC,Ebener J,Dien BS,Cotta MA,Blaschek HPdoi
10.1016/j.biortech.2007.09.087subject
Has Abstractpub_date
2008-09-01 00:00:00pages
5915-22issue
13eissn
0960-8524issn
1873-2976pii
S0960-8524(07)00866-8journal_volume
99pub_type
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