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Bulletin of the Chemical Society of Ethiopia

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

Wojciech Ciesielski, Piotr Tomasik

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.




http://dx.doi.org/10.4314/bcse.v17i2.61663
AJOL African Journals Online