Statistical optimization of sulfite pretreatment of corncob residues for high concentration ethanol production.
Bioresour Technol
; 102(3): 3014-9, 2011 Feb.
Article
em En
| MEDLINE
| ID: mdl-21067916
ABSTRACT
In this study, a central composite design of response surface method was used to optimize sulfite pretreatment of corncob residues, in respect to sulfite charge (5-10%), treatment time (1-2h), liquid/solid (l/s) ratio (61-101) and temperature (150-180°C) for maximizing glucose production in enzymatic hydrolysis process. The relative optimum condition was obtained as follows sulfite charge 7.1%, l/s ratio 7.61, temperature 156°C for 1.4h, corresponding to 79.3% total glucan converted to glucose+cellobiose. In the subsequent simultaneous saccharification and fermentation (SSF) experiments using 15% glucan substrates pretreated under this kind of conditions, 60.8 g ethanol l(-1) with 72.2% theoretical yield was obtained.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Saccharomyces cerevisiae
/
Sulfitos
/
Celulase
/
Zea mays
/
Etanol
Tipo de estudo:
Risk_factors_studies
Idioma:
En
Revista:
Bioresour Technol
Ano de publicação:
2011
Tipo de documento:
Article