Synthesis, characterization and investigation of antioxidant activity of cobalt–quercetin complex
| Autor: | Shahabuddin Memon, Muhammad Iqbal Bhanger, M. Mahroof Tahir, S. Birjees Bukhari |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Antioxidant
DPPH Ligand medicine.medical_treatment Organic Chemistry chemistry.chemical_element Analytical Chemistry Inorganic Chemistry Metal chemistry.chemical_compound chemistry visual_art medicine visual_art.visual_art_medium Proton NMR Organic chemistry Methanol Quercetin Cobalt Spectroscopy Nuclear chemistry |
| Zdroj: | Journal of Molecular Structure. 892:39-46 |
| ISSN: | 0022-2860 |
| Popis: | This article describes a novel synthesis of cobalt and quercetin·2H 2 O complex in methanol, characterized by using elemental analysis, UV–visible, 1 H 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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