On the electrochemical oxidation of resveratrol
On the electrochemical oxidation of resveratrol
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DOI：
10.1002/elan.200503469
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发表时间：
2006-04-01
期刊：
影响因子：
3
通讯作者：
Brett, AMO
中科院分区：
文献类型：
--
作者：
Corduneanu, O;Janeiro, P;Brett, AMO
白藜芦醇（3，5，4 '-trihydroxystilbene）是植物在真菌感染后产生的一种有机代谢产物。它存在于各种植物果实中，在未成熟的葡萄和相关产品的果皮中含量丰富。这种光敏分子以两种异构形式存在，反式和顺式白藜芦醇。白藜芦醇的抗氧化活性，反式和顺式，通过循环，差分脉冲和方波伏安法在很宽的pH值范围内，使用玻碳电极进行评估。白藜芦醇的伏安图呈现出两个氧化峰;第一个氧化峰对应于苯酚基团的氧化，并且显示出进行不可逆的氧化反应。第二个氧化峰对应于间苯二酚部分的氧化，并且也是不可逆的。研究了pH值对白藜芦醇电化学氧化过程的影响。
Resveratrol (3,5,4'-trihydroxystilbene) is ail organic metabolite produced by plants in response to fungal infection. It is found in various plant fruits and is abundant in the skins of unripe grapes and related products. This photosensitive molecule exists in two isomeric forms, trans and cis-resveratrol. The antioxidant activity of resveratrol, both trans and cis forms, was evaluated by means of cyclic, differential pulse and square-wave voltammetry over a wide pH range, using a glassy carbon electrode. Voltammograms of resveratrol presented two oxidation peaks; the first oxidation peak corresponds to the oxidation of the phenol group and was shown to undergo an irreversible oxidation reaction. The second oxidation peak corresponds to the oxidation of the resorcinol moiety and is also irreversible. The influence of pH oil the electrochernical oxidation process of resveratrol was investigated.