Wet oxidation pretreatment, enzymatic hydrolysis and simultaneous saccharification and fermentation of cloverryegrass mixtures
Bioresour technol
; 99(18): 8777-8782, Dec. 2008. tab, graf
Article
in English
| CUMED
| ID: cum-49486
Responsible library:
CU424.1
Localization: CU424.1
ABSTRACT
The potential of clover (Trifolium repens) and ryegrass (Lolium perenne) mixtures as raw materials for ethanol production was investigated. Wet oxidation, at 175, 185 or 195 degree Celsius during 10 min at two different oxygen pressures and with either addition or no addition of sodium carbonate, was evaluated as pretreatment method for cloverryegrass mixtures. The enzymatic hydrolysis of cellulose was significantly improved after pretreatment. The highest conversion efficiency, 93,6 percent, was achieved for the sample pretreated at 195 degree Celsius, 10 min, 1,2 MPa and no addition of Na2CO3. For that sample, the overall glucose yield after pretreatment and hydrolysis was 75,5 percent. No inhibition of cellulose enzymatic conversion by the filtrates was observed. The simultaneous saccharification and fermentation of the pretreated material yielded cellulose conversions of 87,5 and 86,6 percent, respectively, with Saccharomyces cerevisiae and the filamentous fungus Mucor indicus, and revealed that no addition of nutrients is needed for the fermentation of cloverryegrass hydrolysates(AU)
Full text:
Available
Collection:
National databases
/
Cuba
Database:
CUMED
Main subject:
Saccharomyces cerevisiae
/
Trichoderma
/
Lolium
/
Cellulase
/
Fermentation
Language:
English
Journal:
Bioresour technol
Year:
2008
Document type:
Article
Institution/Affiliation country:
Risø National Laboratory/Dinamarca
/
Universidad de Matanzas Camilo Cienfuegos/Cuba