Ulster University Logo

Ulster Institutional Repository

Characterisation of a novel thermotolerant yeast, Kluyveromyces marxianus var marxianus: development of an ethanol fermentation process

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Hack, Catherine and Marchant, Roger (1998) Characterisation of a novel thermotolerant yeast, Kluyveromyces marxianus var marxianus: development of an ethanol fermentation process. JOURNAL OF INDUSTRIAL MICROBIOLOGY & BIOTECHNOLOGY, 20 (6). pp. 323-327. [Journal article]

Full text not available from this repository.

Abstract

The fermentation characteristics of the novel, thermotolerant, isolate Kloyveromyces marxianus var marxianus were determined to evaluate its aptitude for use in an ethanol production process, Sustainable growth was not observed under anaerobic conditions, even in the presence of unsaturated fatty acid and sterol, A maximum ethanol concentration of 40 g L-1 was produced at 45 degrees C, with an initial specific ethanol production rate of 1.7 g g(-1) h(-1). This was observed at ethanol concentrations below 8 g L-1 and under oxygen-limited conditions, The low ethanol tolerance and low growth under oxygen-limited conditions required for ethanol production implied that a simple continuous process was not feasible with this yeast strain. Improved productivity was achieved through recycling biomass into the fermenter, indicating that utilising an effective cell retention method such as cell recycle or immobilisation, could lead to the development of a viable industrial process using this novel yeast strain.

Item Type:Journal article
Faculties and Schools:Faculty of Life and Health Sciences > School of Biomedical Sciences
Research Institutes and Groups:Biomedical Sciences Research Institute
Biomedical Sciences Research Institute > Infection and Immunity/Microbiology
ID Code:2756
Deposited By:Professor Roger Marchant
Deposited On:15 Dec 2009 16:21
Last Modified:27 Jun 2011 11:53

Repository Staff Only: item control page