Rapid and Simple Electrochemical Detection of Pterostilbene in Food Supplements Using a Carbon Paste Electrode

Dilek Özcan Yardim

doi:10.17776/csj.1768024

Rapid and Simple Electrochemical Detection of Pterostilbene in Food Supplements Using a Carbon Paste Electrode

Abstract

Pterostilbene (PTS) is a naturally occurring polyphenol, known as the 3,5-dimethoxy derivative of resveratrol, that occurs in several plant sources such as Pterocarpus marsupium and blueberries, and is recognized for its wide-ranging pharmacological benefits. In this study, an electrochemical sensing platform employing a carbon paste electrode was developed for the sensing of PTS using square-wave voltammetry. Cyclic voltammetry experiments performed in 0.1 M H₂SO₄ revealed that PTS undergoes an irreversible, characterized by one well-defined anodic peak at approximately +0.89 V vs. Ag/AgCl. The oxidation behavior was found to be influenced by both the pH of the medium and the nature of the supporting electrolyte, indicating possible proton-coupled electron transfer mechanisms. Quantitative analysis relied on the most intense anodic peak, observed near +0.79 V under optimized experimental conditions. In an acidic environment, the calibration plot showed strong linear behavior across concentrations from 0.10 to 15.0 μg mL⁻¹, achieving a detection limit of 0.027 μg mL⁻¹. The proposed method demonstrated high sensitivity and selectivity, enabling accurate determination of PTS in commercial food supplement formulations, highlighting its potential for routine quality control in nutraceutical analysis.

Keywords

Supporting Institution

This research received no specific grant from any funding agency in the public, commercial, or not-for-profit sectors.

Ethical Statement

This research did not involve the use of animals. The present study does not require ethics approval.

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Details

Primary Language

English

Subjects

Electroanalytical Chemistry

Journal Section

Research Article

Authors

Dilek Özcan Yardim ^*
0000-0002-0356-2936
Türkiye

Publication Date

December 30, 2025

Submission Date

August 18, 2025

Acceptance Date

November 26, 2025

Published in Issue

Year 2025 Volume: 46 Number: 4

DOI

https://doi.org/10.17776/csj.1768024

IZ

https://izlik.org/JA62WM98DJ

Cite

RIS / Bibtex

APA

Özcan Yardim, D. (2025). Rapid and Simple Electrochemical Detection of Pterostilbene in Food Supplements Using a Carbon Paste Electrode. Cumhuriyet Science Journal, 46(4), 825-831. https://doi.org/10.17776/csj.1768024