| Literature DB >> 25466140 |
Souvik Roy1, Sougata Mallick2, Tania Chakraborty2, Nilanjan Ghosh2, Amit Kumar Singh2, Subhadip Manna2, Sumana Majumdar2.
Abstract
The complex formation between luteolin (L) and vanadium(IV) oxide sulphate monohydrate (VOSO4·H2O) was examined under UV-visible, infra-red spectroscopy, mass spectroscopy and NMR techniques. The spectroscopic data indicated that luteolin reacts with vanadium oxide cation (VO(+2)) through 4-carbonyl-5-hydroxy chelation site in the two luteolin molecule. The free radical antioxidant activity of the complex with respect to the parent molecule was evaluated using 1,1-diphenyl-2-picrylhydrazyl (DPPH), ferric reducing antioxidant power (FRAP) and 2,2'-azinobis 3-ethylbenzothiazoline-6-sulphonic acid diammonium salt (ABTS) methods. It was observed that the free radical scavenging activity and ferric ion reducing potential of luteolin was increased after the formation of complex with vanadium oxide (VO(+2)) cation.Entities:
Keywords: Antioxidant activity; Luteolin–vanadium(II) complex; Radical scavenging activity; Spectral characterisation
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Year: 2014 PMID： 25466140 DOI： 10.1016/j.foodchem.2014.10.141
Source DB: PubMed Journal: Food Chem ISSN： 0308-8146 Impact factor: 7.514