Synthesis, characterization and investigation of antioxidant activity of cobalt–quercetin complex
This article describes a novel synthesis of cobalt and quercetin·2H 2O complex in methanol, characterized by using elemental analysis, UV–visible, 1H NMR, TGA, DSC and IR spectrometric techniques. The formation of complex is deduced from the UV–visible spectra which shows that the successive formati...
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Published in | Journal of molecular structure Vol. 892; no. 1; pp. 39 - 46 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Elsevier B.V
15.12.2008
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Subjects | |
Online Access | Get full text |
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Summary: | This article describes a novel synthesis of cobalt and quercetin·2H
2O complex in methanol, characterized by using elemental analysis, UV–visible,
1H NMR, TGA, DSC and IR spectrometric techniques. The formation of complex is deduced from the UV–visible spectra which shows that the successive formation of cobalt–quercetin complex occurs in a ratio of 2:1 (metal/ligand) stoichiometrically. The antioxidant activity of the complex was evaluated by using 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging method. In this work, we have shown that the metal complexed flavonoids are much more effective free radical scavengers than the free flavonoids. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0022-2860 1872-8014 |
DOI: | 10.1016/j.molstruc.2008.04.050 |