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Radical Scavenging Activity Of Flavonoids Increased By Metal Ions | 107154
ISSN: 2329-8863

Advances in Crop Science and Technology
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Radical scavenging activity of flavonoids increased by metal ions

14th International Conference on Agriculture & Horticulture

Rui-Min Han, Yi Xu, Ling-Ling Qian and Jian-Ping Zhang

Renmin University of China, China

ScientificTracks Abstracts: Adv Crop Sci Tech

Abstract
Flavonoids are secondary plant metabolities of the polyphenol family with a diversity of biological functions. Most metal-flavonoid complexes are found to have considerably higher antioxidant effects than free flavonoids. Molecular mechanisms of antioxidant activity of flavonoids increased by metal ions are poorly understood.

In our studies, binding of flavonoids (apigenin, kaempferol and luteolin) with metal ions, and radical scavenging activities of corresponding complexes were investigated in detail. Structural factors, such as coordinate proportions of metal ions and flavonoids and steric orientations affecting activities of metal-flavonoid complexes as antioxidants, are elucidated.

Recent Publications

1. Xu Y, Qian L-L, Yang J, Han R-M, Zhang J-P, Skibsted L H (2018) Kaempferol Binding to Zinc(II), E??cient Radical Scavenging through Increased Phenol Acidity. J. Phys. Chem. B 122: 10108???10117.

2. Liu X-C, Du H-H, Fu L-M, Han R-M, Wang P, Ai X-C, Zhang J-P, Skibsted L H (2018) Integrity of Membrane Structures in Giant Unilamellar Vesicles as Assay for Antioxidants and Prooxidants. Anal. Chem. 90: 2126???2133.

3. Yang J, Xu Y, Liu H-Y, Han R-M, Zhang J-P, Skibsted L H (2017) Genistein Binding to Copper(II)-Solvent Dependence and Effects on Radical Scavenging. Molecules 22: 1757???1771.

4. Pereira J C M, Iretskii A V, Han R-M, Peter C. Ford (2015) Dinitrosyl Iron Complexes with Cysteine. Kinetics Studies of the Formation and Reactions of DNICs in Aqueous Solution. J. Am. Chem. Soc. 137: 328???336.

5. Han R-M, Cheng H, Feng R, Li D-D, Lai W, Zhang J-P, Skibsted L H (2014) ????Carotene As a Lipophilic Scavenger of Nitric Oxide. J. Phys. Chem. B 118: 11659???11666.
Biography

Rui-Min Han, Associate professor in Department of Chemistry, Renmin University of China, Beijing, 100872 Research interest: Antioxidant mechanism and application of phytochemicals and their metal complexes. Speciality: time-resolved dynamics (stopped-flow, laser photolysis).

E-mail: [email protected]

 

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