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  • Articles  (2)
  • Chemical Engineering
  • Electronic structure and strongly correlated systems
  • Saccharomyces cerevisiae
  • seaweed
  • Springer  (2)
  • American Association for the Advancement of Science (AAAS)
  • 1980-1984  (2)
  • Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition  (2)
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  • Articles  (2)
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  • Springer  (2)
  • American Association for the Advancement of Science (AAAS)
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    European journal of nutrition 22 (1983), S. 205-212 
    ISSN: 1436-6215
    Keywords: Schwermetallwirkung ; Malatdehydrogenase ; Glutamatdehydrogenase ; Glycerinaldehyd-3-phosphatdehydrogenase ; Saccharomyces cerevisiae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Medicine
    Description / Table of Contents: Summary The difference between cadmium, zinc, lead, and mercury in regard of their effects on the activity of the enzymes tested is very slight. Concentrations higher than 10−5 M reduce significantly the activity of the enzymes, and concentrations of approximately 10−3 M inhibit it completely. An increase of the activity cannot be detected. The addition of combinations of cadmium, zinc, and lead results in a summing up of the toxic effects, whereas the interaction between mercury and the other three heavy metals shows a cumulative effect, which is appointed nearly completely by the heavy metal more toxic. The findings suggest that under in-vitro conditions there exists a direct interaction between the heavy metals and the enzymes.
    Notes: Zusammenfassung Die vier Schwermetalle Cadmium, Zink, Blei und Quecksilber unterscheiden sich in ihrer Wirkung auf die Aktivität der untersuchten Enzyme nur sehr wenig. Konzentrationen über 10−5 M vermindern die Enzymaktivität signifikant, und Konzentrationen von etwa 10−3 M unterbinden sie völlig. Eine Steigerung der Enzymaktivität läßt sich nicht feststellen. Die Zugabe von Cadmium-, Zink- und Bleikombinationen führt zu einer Addition der toxischen Effekte, während bei der Interaktion zwischen Quecksilber und den anderen drei Schwermetallen die Gesamtwirkung fast ausschließlich durch das stärker hemmende Schwermetall allein bestimmt wird. Die erhaltenen Ergebnisse lassen vermuten, daß es unter Invitro-Bedingungen zu einer direkten Wechselwirkung zwischen den Schwermetallen und den Enzymen kommt.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Plant and soil 57 (1980), S. 41-47 
    ISSN: 1573-5036
    Keywords: Amino acids ; Nucleic acid bases ; Saccharomyces cerevisiae ; Vitamins ; Yeast autolyzate ; Yield stimulation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Effect of yeast autolyzate on the growth of vineless pea plant was investigated. The yield was increased remarkably when yeast autolyzate was added, as compared with the control area in which the plants received only mineral fertilizer solution. The yield stimulation was the highest where 0.1 ppm of the autolyzate was added, the yield increasing by more than 80%. The reason why the yields were lower in the areas where the amount of yeast autolyzate added was incrased to 1 ppm and to 10 ppm, was presumed to be due to the fact that the substances may have been absorbed, decomposed, and utilized by soil microorganisms.
    Type of Medium: Electronic Resource
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