Lipid-Enhanced Ethanol Production by Kluyveromyces fragilis.
The fermentation ability of a strain of Kluyveromyces fragilis, already selected for rapid lactose-fermenting capability, was improved dramatically by the addition of unsaturated fatty acids and ergosterol to the medium. The fermentation time of a 20% whey-lactose medium was decreased from over 90 h to less than 60 h. The lipids were shown to be taken up by the organism, and the effects on specific growth rate and biomass production were determined.
Janssens
J H
JH
Solar Energy Research Institute, Biotechnology Branch, Golden, Colorado 80401.
Burris
N
N
Woodward
A
A
Bailey
R B
RB