Journal
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
Volume 151, Issue -, Pages 807-813Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2015.07.050
Keywords
Quercetin-magnesium complex; Flavonoids; Quercetin; Spectral characterisation; Antioxidant activity; Radical scavenging activity
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Funding
- Hari Charan Garg charitable trust
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Quercetin (3,3',4',5,7-pentahydroxyflavone) one of the most abundant dietary flavonoids, has been investigated in the presence of magnesium (II) in methanol. The complex formation between quercetin and magnesium (II) was examined under UV-visible, Infra-red and H-1 NMR spectroscopic techniques. The spectroscopic data denoted that quercetin can reacts with magnesium cation (Mg+2) through the chelation site in the quercetin molecule. The free radical antioxidant activity of the complex with respect to the parent molecule was evaluated using 1,1-diphenyl-2-picrylhydrazyl (DPPH) method. It was observed that the free radical scavenging activity of quercetin was increased after complexation of magnesium (Me+2) cation. (C) 2015 Elsevier B.V. All rights reserved.
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