Chemistry of Natural Compounds

, Volume 43, Issue 3, pp 302–305 | Cite as

Structural modification of potato starch by solutions of nitrogen(IV) oxide in CCl4

  • S. M. Butrim
  • T. D. Bil’dyukevich
  • N. S. Butrim
  • T. L. Yurkshtovich


Structural transformations of potato starch by solutions of nitrogen(IV) oxide in CCl4 were studied as a function of oxidant concentration, starch moisture content, reaction time, and molar ratio of reactants. Oxidized starches with various numbers of carboxylic acids were studied by x-ray phase analysis, 13C NMR, and IR spectroscopy. It was found that carboxylic acids were formed primarily on C6 in starch oxidation products that were x-ray amorphous. The number of carboxyls increased slightly with increased oxidation time and oxidant concentration. It was shown that moisture must be present in the starch for oxidation by nitrogen(IV) oxide to be effective.

Key words

potato starch oxidation nitrogen(IV) oxide functional composition carboxylic and carbonyl groups structure 13C NMR and IR spectra 


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Copyright information

© Springer Science+Business Media, Inc. 2007

Authors and Affiliations

  • S. M. Butrim
    • 1
  • T. D. Bil’dyukevich
    • 1
  • N. S. Butrim
    • 1
  • T. L. Yurkshtovich
    • 1
  1. 1.Belorussian State University Scientific Research Institute of Physical Chemical ProblemsMinsk

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