Effects of noble metal nanoparticles on the hydroxyl radical scavenging ability of dietary antioxidants
Effects of noble metal nanoparticles on the hydroxyl radical scavenging ability of dietary antioxidants
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DOI：
10.1080/10590501.2018.1450194
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发表时间：
2018-04
期刊：
影响因子：
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通讯作者：
Hui Zhang;Xiumei Jiang;Gaojuan Cao;Xiaowei Zhang;T. Croley;Xiaochun Wu;Jun-Jie Yin
中科院分区：
文献类型：
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作者：
Hui Zhang;Xiumei Jiang;Gaojuan Cao;Xiaowei Zhang;T. Croley;Xiaochun Wu;Jun-Jie Yin
贵金属纳米颗粒（NPs）已广泛应用于许多消费品中。它们对商业膳食补充剂的抗氧化活性的影响尚未得到很好的评价。在这项研究中，我们研究了金（Au NPs）、银（Ag NPs）、铂（Pt NPs）和钯（Pd NPs）对三种膳食补充剂维生素C （l -抗坏血酸，AA）、(−)-表没食子儿茶素没食子酸酯（EGCG）和没食子酸（GA）清除羟基自由基（·OH）能力的影响。通过电子自旋共振（ESR）自旋捕获测量，结果表明这些贵金属NPs可以抑制这些膳食补充剂对羟基自由基的清除能力。
ABSTRACT Noble metal nanoparticles (NPs) have been widely used in many consumer products. Their effects on the antioxidant activity of commercial dietary supplements have not been well evaluated. In this study, we examined the effects of gold (Au NPs), silver (Ag NPs), platinum (Pt NPs), and palladium (Pd NPs) on the hydroxyl radical (·OH) scavenging ability of three dietary supplements vitamin C (L-ascorbic acid, AA), (−)-epigallocatechin gallate (EGCG), and gallic acid (GA). By electron spin resonance (ESR) spin-trapping measurement, the results show that these noble metal NPs can inhibit the hydroxyl radical scavenging ability of these dietary supplements.