Enhancing yeast ethanol tolerance for biofuel production

Ishmayana, Safri and Kennedy, Ursula J. and Learmonth, Robert P. (2009) Enhancing yeast ethanol tolerance for biofuel production. In: 4th Australian Conference on Yeast Products and Discovery, 2-4 Dec 2009, Adelaide, South Australia.

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Abstract

The decrease of fossil fuel availability has created a high demand for alternative fuels, including bioethanol produced by yeast fermentation of carbohydrate. Relatively low yields of ethanol can be a major problem in this bioconversion. Approaches to increase efficiency in the fuel ethanol industry include improving yeast metabolic flux and fermentation rate and selection of yeast with higher ethanol tolerance. This study has an alternative approach, aiming to enhance ethanol tolerance of several strains of Saccharomyces cerevisiae through modification of growth medium composition. It focuses specifically on two important components which have been shown to positively affect yeast stress tolerance; inositol and L-proline. Various concentrations of these compounds are being added to laboratory scale fuel ethanol fermentations to determine levels that potentiate the highest ethanol tolerance and productivity of the yeast. The authors would like to acknowledge the support of the Ministry of National Education of the Republic of Indonesia, for provision of a postgraduate scholarship to SI.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Poster)
Refereed: No
Item Status: Live Archive
Additional Information: Poster presentation. Authors retain copyright.
Depositing User: Assoc Prof Robert Learmonth
Faculty / Department / School: Historic - Faculty of Sciences - Department of Biological and Physical Sciences
Date Deposited: 17 Dec 2010 06:51
Last Modified: 02 Jul 2013 23:33
Uncontrolled Keywords: yeast; ethanol; tolerance; biofuel
Fields of Research (FOR2008): 06 Biological Sciences > 0601 Biochemistry and Cell Biology > 060199 Biochemistry and Cell Biology not elsewhere classified
10 Technology > 1003 Industrial Biotechnology > 100303 Fermentation
10 Technology > 1003 Industrial Biotechnology > 100305 Industrial Microbiology (incl. Biofeedstocks)
Socio-Economic Objective (SEO2008): B Economic Development > 85 Energy > 8505 Renewable Energy > 850501 Biofuel (Biomass) Energy
URI: http://eprints.usq.edu.au/id/eprint/6459

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