Investigation of the Antioxidant Property of Ascorbic Acid

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• 作者：Xiaoquan Lu ; Mina Nan ; Hairui Zhang ; Xiuhui Liu ; Huiqing Yuan ; Jiandong Yang
• 刊名：Journal of Physical Chemistry C
• 出版年：2007
• 出版时间：October 18, 2007
• 年：2007
• 卷：111
• 期：41
• 页码：14998 - 15002
• 全文大小：113K
• 年卷期：v.111,no.41(October 18, 2007)
• ISSN：1932-7455

文摘

The antioxidant property of ascorbic acid (AA) was demonstrated during the process of electron transfer(ET) and the corresponding effects of AA were visibly affected by using porphyrin zinc with various substitutesas oxidants. As electron receptors, porphyrin zinc molecules obtained the electron that came from the electrondonor AA, which was perfectly convenient for the simulated antioxidant reaction. The results of the obtainedkinetics data showed that the antioxidant property of AA may be affected owing to the difference of theoxidants. Experimental results showed that thin-layer cyclic voltammetry (TLCV) and scanning electrochemicalmicroscopy (SECM) were applied as investigating means to evaluate the rate constant of electron transferachieved and expressed concerns about the simplicity and reliability, and they were also more vigorous methodsto study the simulated biomembrane.