Document Detail


Enhanced bioethanol production from pretreated corn stover via multi-positive effect of casein micelles.
MedLine Citation:
PMID:  22939602     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Casein polypeptides containing substructures of αs(1)-casein, β-casein, k-casein, αs(2)-casein were used as a lignin-blocker at above critical micelles concentration to improve the bioethanol production of dilute acid, lime, alkali, extrusion and AFEX pretreated corn stover (CS). Application of 0.5g/g glucan of casein was found to effectively increase the glucose yield of CS pretreated with dilute acid, lime, alkali, extrusion and AFEX by 31.9%, 17.0%, 22.7%, 29.5%, and 17.4%, respectively with no positive impact on Avicel. Consequently 96h simultaneous saccharification and fermentation (SSF) of these hydrolysates reduced the fermentation period by up to 48h and increased the theoretical yield of ethanol by 8.48-33.7% compared to control. Application of casein during saccharification reduced the enzyme utilization by 33.0%. Recycling of hydrolysate from casein-treated CS for a 2nd round hydrolysis resulted in average glucose yield of 36.4% compared to 29.0% control.
Authors:
Anahita Dehkhoda Eckard; Kasiviswanathan Muthukumarappan; William Gibbons
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-8-7
Journal Detail:
Title:  Bioresource technology     Volume:  -     ISSN:  1873-2976     ISO Abbreviation:  Bioresour. Technol.     Publication Date:  2012 Aug 
Date Detail:
Created Date:  2012-9-3     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9889523     Medline TA:  Bioresour Technol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Elsevier Ltd. All rights reserved.
Affiliation:
Department of Agricultural and Biosystems Engineering, 1400 North Campus Drive, South Dakota State University, Brookings, SD 57007, USA.
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