Coordination of cassava starch to metal ions and thermolysis of resulting complexes

  • Wojciech Ciesielski Institute of Chemistry and Environmental Protection, Pedagogical University, 42 201 Częstochowa, Poland
  • Piotr Tomasik Department of Chemistry, University of Agriculture, Mickiewicz Avenue, 21, 31 120 Cracow, Poland
DOI: 10.4314/bcse.v17i2.61663
Keywords: Cassava starch, Coordination of starch to metal ions, Thermal decomposition of starch, Electron paramagnetic resonance measurements, Conductivity

Abstract

Cassava starch formed Werner-type complexes with ions of metals from the transition groups. This was proven by conductivity and electron paramagnetic resonance measurements. The coordination of starch to central metal ions influenced the thermal decomposition of starch. As a rule complexes started to decompose at lower temperature than did starch. On the other hand, the decomposition proceeded at a lower rate than the decomposition of non-coordinated starch.

 

KEY WORDS: Cassava starch, Coordination of starch to metal ions, Thermal decomposition of starch, Electron paramagnetic resonance measurements, Conductivity

 

 

Bull. Chem. Soc. Ethiop. 2003, 17(2), 155-165.

Issue
Vol. 17 No. 2 (2003)
Section
Articles

Journal Identifiers


eISSN: 1726-801X
print ISSN: 1011-3924