Use of Zymomonas mobilis and Saccharomyces cerevisiae mixed with Kluyveromyces fragilis for improved ethanol production from Jerusalem artichoke tubers.
Jerusalem artichoke mashed tubers were fermented using single yeasts and a bacterium as well as mixed culture of microorganisms. Kluyveromyces fragilis, a yeast with an active inulinase, was used together with either a commercial distillery yeast, Saccharomyces cerevisiae, or the bacterium Zymomonas mobilis. After batch fermentation the best ethanol concentration of 0.48 g g(-1) for the mixed population and 0.46 g g(-1) for the single population can be obtained. The theoretical yield of the mixed cultures was 2-12% higher than for the single microorganism.
Szambelan
Katarzyna
K
Institute of Food Technology, University of Agriculture in Poznań, 60-624, Wojska Polskiego 31, Poland.
Nowak
Jacek
J
Czarnecki
Zbigniew
Z
D019149:Bioreactors / Q000382:microbiology; D018920:Coculture Techniques / Q000379:methods*; D000431:Ethanol / Q000378:metabolism*; D006368:Helianthus / Q000382:microbiology*; D007218:Industrial Microbiology / Q000379:methods; D007716:Kluyveromyces / Q000378:metabolism*; D035281:Plant Tubers / Q000382:microbiology*; D012441:Saccharomyces cerevisiae / Q000378:metabolism*; D017355:Zymomonas / Q000378:metabolism*
D000431:Ethanol