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Citation: JIA Rui-Jie, ZHANG Qiang, LIU Ji-Feng, Mohamad Hojeij, Hubert H. Girault. Reaction Kinetics for Quenching of Photoinduced Reactive Oxygen Species by Bioantioxidants[J]. Chinese Journal of Analytical Chemistry, ;2016, 44(8): 1257-1262. doi: 10.11895/j.issn.0253-3820.150841 shu

Reaction Kinetics for Quenching of Photoinduced Reactive Oxygen Species by Bioantioxidants

1.
Department of Chemistry, Liaocheng University, Liaocheng 252000, China;
2.
Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China;
3.
Laboratoire d'Electrochimie Physique et Analytique, Station 6, Ecole Polytechnique Fédérale de Lausanne, CH-1015, Lausanne, Switzerland

Received Date: 22 October 2015
Revised Date: 21 March 2016

Fund Project: ThIS work was supported by the National Natural Science Foundation of China (No. 21127006)

Figures(4)

A method based on photogeneration of OH radicals in water from TiO₂ nanoparticles was developed to study the kinetics of oxidation of organic molecules which were used as biological antioxidants. The kinetics of oxidation of terephthalic acid as a reference probe was monitored by fluorescence measurements of the concentration of its oxidized form, 2-hydroterephthalic acid (λ_ex=315 nm, λ_em=425 nm). The kinetics of oxidation of other antioxidant molecules was then deduced from the radical scavenging competition. The antioxidant properties of normal antioxidants were compared basedon this kinetic model. And the antioxidant kinetic decreased in the order:lipoic acid, gallic acid, glutathione, uric acid, vitamin C, vitamin E, trolox and bilirubin.
- Reactive oxygen species,
- Bioantioxidants,
- Photocatalysis,
- Reaction kinetics
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1.
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