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  • 1
    Electronic Resource
    Electronic Resource
    Effect of Calcium Propionate and Sodium Diacetate on Fungi in Stillage (1982)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 47 (1982), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Sodium diacetate was not effective for inhibiting fungal growth at 10 and 20 ppm in stillage produced at a “power-hol” facility and a distillery. Calcium propionate at a concentration of 20 ppm was effective in inhibiting microbial growth for up to 9 days in Jack Daniels stillage. For the Muscle Shoals stillage, calcium propionate at a concentration of 10 ppm was effective in inhibiting fungal growth for up to 14 days Stillage produced at Muscle Shoals had a slightly higher initial pH but a lower yeast content which is thought to have contributed to the longer shelf-life. Stillage produced at Jack Daniel had a lower solids content and a lower pH but supported more fungal growth and spoiled faster.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1982.tb12771.x
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  • 2
    Electronic Resource
    Electronic Resource
    Linear free energy relations and solvent effects for complexes ofm-cresol and various bases (1988)
    Springer
    Journal of solution chemistry 17 (1988), S. 287-296 
    Details
    ISSN: 1572-8927
    Keywords: Hydrogen bonds ; solvent effects ; solvatochromic parameters ; m-cresol
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The enthalpies, entropies, and equilibrium constants for the hydrogen bonded complexes of m-cresol with ten bases in cyclohexane solvent have been determined by calorimetric and spectroscopic methods. The logarithm of the equilibrium constant correlates well with the dipole moment of the base and the solvatochromic parameter β which measures the electron donating ability of the base. The enthalpy and entropy data show that the dipole term does not enter into the log K correlation as a consequence of electrostatic interactions between acid and base in the complex. The free base-solvent interaction, which appears to be dipolar in origin, reduces the entropy of the free base and hence contributes to a favorable entropy change for complex formation. The present data are compared to previously reported data obtained in CCl4 solvent. Solvent effects on the thermodynamic parameters in CCl4 and cyclohexane appear to be related to dipolar interactions by m-cresol and the bases with the two solvents.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00646181
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  • 3
    Electronic Resource
    Electronic Resource
    Eukaryotic origins: String analysis of 5S ribosomal RNA sequences from some relevant organisms (1991)
    Springer
    Journal of molecular evolution 32 (1991), S. 316-327 
    Details
    ISSN: 1432-1432
    Keywords: 5S rRNA ; String analysis ; Eukaryotes ; Archaebacteria
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Using the PHYLOGEN tree-forming programs, we evaluate the published 5S rRNA sequences in certain of the files in the Berlin DataBank in an attempt to identify the connection between archaebacteria and the eukaryotic protists. These programs are based on methods of string analysis developed by Sankoff and others. Their discriminatory power is derived from their continuous realignment of sequences through repeated assessment of insertions and deletions as well as substitutions. The programs demonstrate that even these small molecules (ca. 120 bases) retain substantial records of evolutionary events that occurred over a billion years ago. The eukaryotes seem to have been derived from ancestors near the common origins of the halobacterial and Methanococcales groups. Identifying what might have been a primordial eukaryote is more difficult because several of the species considered as early derivatives from the common root are isolated species with large genetic differences from each other and from all other extant forms that have been sequenced. The ameboid, flagellated, and ciliated protists seem to have emerged nearly simulataneously from an ancient cluster, but the sarcodinid protozoa have preference as the group of most ancient origin. The euglenozoa and the ciliates are of later derivation. Our ability to tease plausible trees from such small molecules suggests that the mode of analysis rather than the size of the molecule is often a major limitation in the reconstruction of acceptable ancient phylogenies. The residual uncertainty with respect to the conclusions of the 5S analysis may indicate a real limit on the informational content of such small molecules; the period of evolutionary time during which the primary eukaryotic radiation occurred may have been very short relative to the rate of fixation of changes in this highly conserved molecule. Much of even this limitation may be resolved, however, when a sufficiently dense sample of the problematic taxa is examined.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02102190
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    Paper (German National Licenses)
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