Document Detail


Yeast flocculation: New story in fuel ethanol production.
MedLine Citation:
PMID:  19577627     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Yeast flocculation has been used in the brewing industry to facilitate biomass recovery for a long time, and thus its mechanism of yeast flocculation has been intensively studied. However, the application of flocculating yeast in ethanol production garnered attention mainly in the 1980s and 1990s. In this article, updated research progress in the molecular mechanism of yeast flocculation and the impact of environmental conditions on yeast flocculation are reviewed. Construction of flocculating yeast strains by genetic approach and utilization of yeast flocculation for ethanol production from various feedstocks were presented. The concept of self-immobilized yeast cells through their flocculation is revisited through a case study of continuous ethanol fermentation with the flocculating yeast SPSC01, and their technical and economic advantages are highlighted by comparing with yeast cells immobilized with supporting materials and regular free yeast cells as well. Taking the flocculating yeast SPSC01 as an example, the ethanol tolerance of the flocculating yeast was also discussed.
Authors:
X Q Zhao; F W Bai
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Review     Date:  2009-07-03
Journal Detail:
Title:  Biotechnology advances     Volume:  27     ISSN:  1873-1899     ISO Abbreviation:  Biotechnol. Adv.     Publication Date:    2009 Nov-Dec
Date Detail:
Created Date:  2009-10-12     Completed Date:  2010-01-11     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8403708     Medline TA:  Biotechnol Adv     Country:  England    
Other Details:
Languages:  eng     Pagination:  849-56     Citation Subset:  IM    
Affiliation:
Department of Bioscience and Bioengineering, Dalian University of Technology, Dalian 116024, China.
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MeSH Terms
Descriptor/Qualifier:
Ethanol / metabolism*
Flocculation*
Genes, Fungal
Yeasts / genetics,  metabolism*
Chemical
Reg. No./Substance:
64-17-5/Ethanol

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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