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  • 1980-1984  (1)
  • Chemistry  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Acta Polymerica 34 (1983), S. 205-209 
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Vibration grinding of metal pectates increases the destruction effect depending on the bound metallic cation in the sequence K+ 〈 Mg2+ 〈 Ca2+ ≪ Cu2+. Therefore, the mechanolysis of Cu-pectate can be used for preparing highly destructed galacturonans. Cu2+-ions destabilize the pectate molecule also during storage, consequently a conversion of the degradation products into the stable K+-form is necessary.
    Notes: Beim Schwingmahlabbau von Metallpektaten erhöht sich die Abbauwirkung mit dem gebundenen Metallkation in der Reihenfolge K+ 〈 Mg2+ 〈 Ca2+ ≪ Cu2+. Die Mechanolyse von Cu-Pektat kann daher zur Präparierung von stark abgebauten Galakturonanen eingesetzt werden. Cu2+-Ionen destabilisieren das Pektatmolekül auch bei der Lagerung, so daß eine Überführung der Abbauprodukte in die lagerstabile K+-Form erforderlich ist.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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