The kinetics of ethanol inhibition on cell growth and ethanol production by Kluyveromyces marxianus UCD (FST) 55-82 were studied during batch growth. The liquid medium contained 10% (wt/vol) inulin-type sugars derived from an extract of Jerusalem artichoke (Helianthus tuberosus) tubers, supplemented with small amounts of Tween 80, oleic acid, and corn steep liquor. Initial ethanol concentration...

Deoxyribonucleic acid (DNA) base composition and DNA base sequence relatedness comparisons were used for species delineation in the genus Kluyveromyces. Base composition values separated the members of the genus into three groups. The groups were further subdivided by comparing base sequences by using DNAIDNA renaturation experiments. Two DNA homology groups were identified. The first group inc...

Various carbon sources were evaluated for production of inulinase by yeast, Kluyveromyces marxianus MTCC 3995. Highest inulinase activity was observed with Dahlia extract (25.3 nkat mL(-1)) as carbon source. The enzyme activity was 1.4 folds higher than that observed in media containing pure chicory inulin (17.8 nkat mL(-1)). The yeast showed good growth on a simple medium containing dahlia ext...

The present work is initiated to investigate whether a defined culture comprising a mixture of three yeast species, Kluyveromyces marxianus, Saccharomyces cerevisiae, and Pichia stipitis can ferment a mixture of sugars to produce bioethanol at rates higher than those achieved by pure cultures of the same. For this purpose, we develop models of single species based on the hybrid cybernetic model...

Volodymyr P. Kravchuk,1,2,* Ulrich K. Rößler,2 Oleksii M. Volkov,1,3 Denis D. Sheka,4 Jeroen van den Brink,2,5 Denys Makarov,3 Hagen Fuchs,2 Hans Fangohr,6 and Yuri Gaididei1 1Bogolyubov Institute for Theoretical Physics of National Academy of Sciences of Ukraine, 03680 Kyiv, Ukraine 2Leibniz-Institut für Festkörperund Werkstoffforschung, IFW Dresden, D-01171 Dresden, Germany 3Helmholtz-Zentrum...

BACKGROUND Carbon sources for biofuel production are wide-ranging and their availability depends on the climate and soil conditions of the land where the production chain is located. Henequen (Agave fourcroydes Lem.) is cultivated in Yucatán, Mexico to produce natural fibers from the leaves, and a juice containing fructans is produced during this process. Fructans can be hydrolyzed to fructose ...

Abstract Seventeen samples of Calabrian ewe’s milk, cheese ( Pecorino del Poro ) made with raw goat’s and Caprino d’Aspromonte milk were used to obtain 124 yeast isolates. The most abundant species was Debaryomyces hansenii (61.3%), followed by Candida zeylanoides (32.3%) Kluyveromyces marxianus (3.2%). enzymatic profile 25 selected strains determined. Lastly, they studied for their interaction...