Wet oxidation pretreatment, enzymatic hydrolysis and simultaneous saccharification and fermentation of cloverryegrass mixtures
Bioresour technol
; 99(18): 8777-8782, Dec. 2008. tab, graf
Artigo
em Inglês
| CUMED
| ID: cum-49486
Biblioteca responsável:
CU424.1
Localização: 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)
Texto completo:
Disponível
Coleções:
Bases de dados nacionais
/
Cuba
Base de dados:
CUMED
Assunto principal:
Saccharomyces cerevisiae
/
Trichoderma
/
Lolium
/
Celulase
/
Fermentação
Idioma:
Inglês
Revista:
Bioresour technol
Ano de publicação:
2008
Tipo de documento:
Artigo
Instituição/País de afiliação:
Risø National Laboratory/Dinamarca
/
Universidad de Matanzas Camilo Cienfuegos/Cuba