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Article

Electrochemical Sensor for Determination of Various Phenolic Compounds in Wine Samples Using Fe3O4 Nanoparticles Modified Carbon Paste Electrode

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Department of Biomedical Engineering, Near East University, Near East Boulevard, 99138 Nicosia, Cyprus
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Department of Food Engineering, Near East University, Near East Boulevard, 99138 Nicosia, Cyprus
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Department of Materials Science and Nanotechnology Engineering, Near East University, Near East Boulevard, 99138 Nicosia, Cyprus
*
Author to whom correspondence should be addressed.
Academic Editor: Fan-Gang Tseng
Micromachines 2021, 12(3), 312; https://doi.org/10.3390/mi12030312
Received: 15 January 2021 / Revised: 9 March 2021 / Accepted: 11 March 2021 / Published: 17 March 2021
(This article belongs to the Special Issue Electrochemical Sensors in Biological Applications)
Phenolic compounds contain classes of flavonoids and non-flavonoids, which occur naturally as secondary metabolites in plants. These compounds, when consumed in food substances, improve human health because of their antioxidant properties against oxidative damage diseases. In this study, an electrochemical sensor was developed using a carbon paste electrode (CPE) modified with Fe3O4 nanoparticles (MCPE) for the electrosensitive determination of sinapic acid, syringic acid, and rutin. The characterization techniques adapted for CPE, MCPE electrodes, and the solution interface were cyclic voltammetry (CV), differential pulse voltammetry (DPV), and electrochemical impedance spectroscopy (EIS). Scan rate and pH were the parameters subjected to optimization studies for the determination of phenolic compounds. The incorporation of Fe3O4 nanoparticles to the CPE as a sensor showed excellent sensitivity, selectivity, repeatability, reproducibility, stability, and low preparation cost. The limits of detection (LOD) obtained were 2.2 × 10−7 M for sinapic acid, 2.6 × 10−7 M for syringic acid, and 0.8 × 10−7 M for rutin, respectively. The fabricated electrochemical sensor was applied to determine phenolic compounds in real samples of red and white wine. View Full-Text
Keywords: electrochemical sensor; Fe3O4 nanoparticles; carbon paste electrodes; sinapic acid; syringic acid; rutin; voltammetry; electrochemical impedance spectroscopy electrochemical sensor; Fe3O4 nanoparticles; carbon paste electrodes; sinapic acid; syringic acid; rutin; voltammetry; electrochemical impedance spectroscopy
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MDPI and ACS Style

Pwavodi, P.C.; Ozyurt, V.H.; Asir, S.; Ozsoz, M. Electrochemical Sensor for Determination of Various Phenolic Compounds in Wine Samples Using Fe3O4 Nanoparticles Modified Carbon Paste Electrode. Micromachines 2021, 12, 312. https://doi.org/10.3390/mi12030312

AMA Style

Pwavodi PC, Ozyurt VH, Asir S, Ozsoz M. Electrochemical Sensor for Determination of Various Phenolic Compounds in Wine Samples Using Fe3O4 Nanoparticles Modified Carbon Paste Electrode. Micromachines. 2021; 12(3):312. https://doi.org/10.3390/mi12030312

Chicago/Turabian Style

Pwavodi, Pwadubashiyi C., Vasfiye H. Ozyurt, Suleyman Asir, and Mehmet Ozsoz. 2021. "Electrochemical Sensor for Determination of Various Phenolic Compounds in Wine Samples Using Fe3O4 Nanoparticles Modified Carbon Paste Electrode" Micromachines 12, no. 3: 312. https://doi.org/10.3390/mi12030312

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