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Ethanol production from corn stover hemicellulosic hydrolysate using immobilized recombinant yeast cells

Paper ID Volume ID Publish Year Pages File Format Full-Text
4092 208 2010 5 PDF Available
Title
Ethanol production from corn stover hemicellulosic hydrolysate using immobilized recombinant yeast cells
Abstract

Ethanol production from corn stover hemicellulosic hydrolysate was investigated using immobilized recombinant Saccharomyces cerevisiae yeast cells. Detoxification of hemicellulosic hydrolysate by roto-evaporation and lime neutralization was carried out to remove volatile fermentation inhibitors. All furfural and more than 50% acetic acid in the hydrolysate were removed, meanwhile the xylose concentration was enhanced to 71.8 g/L. The fermentability of the detoxified hydrolysate was significantly improved using immobilized cells of recombinant S. cerevisiae by Ca-alginate. An ethanol concentration of 31.1 g/L and the corresponding ethanol yield on fermentable sugars of 0.406 g/g were obtained within 72 h in batch fermentation of the detoxified hydrolysate with immobilized cells. In addition, repeated batch fermentation of immobilized recombinant S. cerevisiae cells was attempted for ethanol production for 5 batches. The concentration of ethanol in each batch maintained above 30.1 g/L with the ethanol yield on fermentable sugars over 0.393 g/g. These results demonstrate the viability and significance of ethanol production from corn stover hemicellulosic hydrolysate.

Keywords
Corn stover; Hemicellulose; Hydrolysate; Ethanol; Recombinant yeast; Immobilized cell
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Ethanol production from corn stover hemicellulosic hydrolysate using immobilized recombinant yeast cells
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 49, Issue 1, 15 March 2010, Pages 28–32
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us