Towards Detection of Total Antioxidant Concentrations of Glutathione, Cysteine, Homocysteine and Ascorbic Acid Using a Nanocarbon Paste Electrode

Journal article

Abstract:: The electrocatalytic reaction between catechol and the antioxidants, glutathione, cysteine, homocysteine and ascorbic acid is studied at a nanocarbon paste electrode and used to measure the total antioxidant concentration in aqueous solution. Two different approaches are described: one in which catechol is dissolved in solution and the second in which catechol is dissolved into the nanocarbon paste electrode. Similar limits of detection of 2.0μM and 1.9μM and sensitivities of 8.8×10-3μA/μM and 0.11μM-1 are reported, respectively at nanocarbon and nanocarbon-catechol paste electrodes. Three different commercial multivitamin drug samples were analysed and the results were in a good agreement with those from independent analysis. © 2014 The Authors.

Publisher:: Electrochemical Science Group
Journal:: INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE More from this journal
Volume:: 9
Issue:: 7
Pages:: 3458-3472
Publication date:: 2014-07-01
EISSN:: 1452-3981
ISSN:: 1452-3981

Language:: English
Keywords:: homocysteine

ascorbic acid

antioxidants

Nanocarbon paste electrode

catechol

cysteine

glutathione
UUID:: uuid:355a3496-485d-409a-a9e1-a5ba08d4e728
Local pid:: pubs:464208
Source identifiers:: 464208
Deposit date:: 2014-06-17

Licence:: Terms and Conditions of Use for Oxford University Research Archive

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