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Ethanol production from acid hydrolysate of wood biomass using the flocculating yeast Saccharomyces cerevisiae strain KF-7

Paper ID Volume ID Publish Year Pages File Format Full-Text
36622 45138 2006 6 PDF Available
Title
Ethanol production from acid hydrolysate of wood biomass using the flocculating yeast Saccharomyces cerevisiae strain KF-7
Abstract

An ethanol production process using the flocculating yeast Saccharomyces cerevisiae strain KF-7 with acid hydrolysate of wood biomass as feed was investigated. Corn steep liquor (CSL) supplemented with KH2PO4, MgSO4, and CaCl2 was used as the source of nitrogen and mineral nutrients. Using a tower-type reactor (working volume (WV), 0.45 L), continuous fermentation with a high ethanol productivity of over 20 g/(L h) was achieved at a dilution rate of 0.3 h−1 with a pH of 4.5 at 35 °C. A continuous fermentation process using two tower-type reactors (WV, 4.5 L each) connected in series was then constructed to decrease the concentration of residual sugars (except for xylose). The contamination of bacteria was effectively repressed and an ethanol productivity of over 12.6 g/(L h) was achieved at an overall dilution rate of 0.2 h−1 with a pH of 4.0 at 35 °C. Strain KF-7 was thus demonstrated to be suitable for the production of ethanol from acid hydrolysate of wood biomass.

Keywords
Fuel ethanol production; Wood biomass; Continuous ethanol fermentation; Flocculating yeast
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Ethanol production from acid hydrolysate of wood biomass using the flocculating yeast Saccharomyces cerevisiae strain KF-7
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 41, Issue 4, April 2006, Pages 909–914
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