| Issue |
BIO Web Conf.
Volume 76, 2023
I International Conference “Biotechnologies in the Context of Human Development” (BCHD - 2023)
|
|
|---|---|---|
| Article Number | 05004 | |
| Number of page(s) | 5 | |
| Section | Agrobiotechnologies | |
| DOI | https://doi.org/10.1051/bioconf/20237605004 | |
| Published online | 20 November 2023 | |
Potentiometric sensor system based on modified screen-printed electrodes for determining antioxidant activity
Ural State University of Economics, Yekaterinburg, Russia
* Corresponding author: tarasovav@usue.ru
A potentiometric sensor system (PSS) was developed to assess antioxidant activity (AOA) using the potassium hexacyanoferrates ([Fe(CN)6]3–/4–) mediator system. The screen-printed indicator electrode was made of carbon ink modified with multi-walled carbon nanotubes (MWCNTs). The screen-printed silver electrode was potentiostatically modified with a silver chloride/ferricyanide precipitate and served as a reference electrode. The resulting PSS based on modified screen-printed electrodes was tested in the analysis of antioxidants and beverages. Beverage analysis results obtained using PSS and the Folin-Ciocalteu spectrophotometric method have a high positive correlation (r = 0.97, p = 0.002). The proposed PSS can be recommended for the analysis of pharmaceutical, cosmetic and clinical samples.
© The Authors, published by EDP Sciences, 2023
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