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  • Saccharomyces cerevisiae  (2)
  • 29.20  (1)
  • fermentation  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Characterization of Free-Electron Laser bunch lengthening on the ACO Storage Ring (1985)
    Springer
    Applied physics 36 (1985), S. 41-52 
    Details
    ISSN: 1432-0649
    Keywords: 42.55T ; 29.20 ; 41.80D
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract This paper summarizes the basic low-current, laser-induced bunch-lengthening measurements that have been made on the ACO Storage-Ring Free-Electron Laser (SRFEL). The measurements provide verification of both the functional dependence and absolute magnitude of SRFEL theoretical models. The method of measurement, which is is explained, exploits frequency-domain techniques and is capable of accuracies comparable to those of a streak camara. The measurements are in good agreement with existing SRFEL theory and provide an important base for future work.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00698035
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Changes in the intracellular concentrations of the adenosine phosphates and nicotinamide adenine dinucleotides ofSaccharomyces cerevisiae during batch fermentation (1995)
    Springer
    World journal of microbiology and biotechnology 11 (1995), S. 196-201 
    Details
    ISSN: 1573-0972
    Keywords: Adenosine phosphates ; fermentation ; flor-veil-forming yeast ; nicotinamide adenine dinucleotides ; Saccharomyces cerevisiae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract Significant changes in the intracellular concentrations of adenosine phosphates and nicotinamide adenine dinucleotides were observed during fermentation of grape must by three different strains ofSaccharomyces cerevisiae: S. cerevisiae var.cerevisiae, a typical fermentative yeast strain and two flor-veil-forming strains,S. cerevisiae var.bayanus andS. cerevisiae var.capensis. The intracellular concentration of ATP was always higher inS. cerevisiae var.cerevisiae than in the flor-veil-forming strains. NAD+ and NADP+ concentrations decreased at faster rates in the flor-veil-forming yeasts than in the other yeast but NADH concentration was the same in all yeasts for the first 10 days of fermentation. NADPH concentration was always lower inS. cerevisiae var.cerevisiae than in the other yeasts and this yeast also showed higher rates of growth and fermentation during the early stages of the fermentation and the presence of non-viable cells at the end of fermentation. In contrast, the flor-veil-forming strains maintained growth and fermentation capabilities for a relatively long time and viable cells were present throughout the entire fermentation process (31 days).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00704648
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Determination of the Relative Ploidy in Different Saccharomyces cerevisiae Strains used for Fermentation and ‘Flor’ Film Ageing of Dry Sherry-type Wines (1997)
    New York, NY [u.a.] : Wiley-Blackwell
    Yeast 13 (1997), S. 101-117 
    Details
    ISSN: 0749-503X
    Keywords: Saccharomyces cerevisiae ; relative ploidy ; chromosomes ; aneuploidy ; flor yeast ; Life and Medical Sciences ; Genetics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: The full chromosomal karyotype of six enological Saccharomyces cerevisiae strains used for fermentation and biological ageing of sherry-type wines was studied. A genetic method based on the analysis of segregation frequencies of auxotrophic markers, among random spore progeny of hybrids, constructed between laboratory and industrial wine strains (Bakalinsky and Snow, 1990) was used. This method was combined with the analysis of strains by pulsed-field gel electrophoresis. The results obtained clearly indicate the presence of two, three or four copies of a chromosome in the industrial strains examined, and thus confirm that aneuploidy/polyploidy is not uncommon in these strains. In all strains examined, chromosome XIII polysomy is observed. This chromosome contains the ADH2 and ADH3 loci, that code for the ADHII and ADHIII isoenzymes of alcohol dehydrogenase, which are involved in ethanol oxidative utilization during biological ageing of wines. Tetrad analysis for the ‘flor formation’ character suggests two possibilities: this character is either regulated by at least a digenic system, or by only one gene present on a chromosome which is, at least, disomic.© 1997 John Wiley & Sons, Ltd.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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