分析化学Issue(8)：1257-1262,6.DOI:10.11895/j.issn.0253-3820.150841
光致活性氧淬灭方法检测生物抗氧化剂动力学模型分析
Reaction Kinetics for Quenching of Photoinduced Reactive Oxygen Species by Bioantioxidants
摘要
Abstract
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 (λex=315 nm, λem=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.关键词
活性氧/生物抗氧化剂/光催化/动力学Key words
Reactive oxygen species/Bioantioxidants/Photocatalysis/Reaction kinetics引用本文复制引用
贾瑞杰,张强,刘继锋,Mohamad Hojeij,Hubert H. Girault..光致活性氧淬灭方法检测生物抗氧化剂动力学模型分析[J].分析化学,2016,(8):1257-1262,6.基金项目
本文系国家自然科学基金(No.21127006)资助 （No.21127006）
