Comparative voltammetric determination of ascorbic acid at three different carbon electrodes: application of carbon screen-printed electrode for citrus fruits analysis

Original scientific paper

Authors

  • Talytha Rodrigues Gaspari Paina Grupo de Eletroquímica, Eletroanalítica e Química Forense (GEEQFor), Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo (DQ/FFCLRP/USP), Avenida Bandeirantes, 3900, Bairro Monte Alegre, Ribeirão Preto, SP, CEP 14040-901, Brazi https://orcid.org/0009-0000-2815-0746
  • Izabel Cristina Eleotério Grupo de Eletroquímica, Eletroanalítica e Química Forense (GEEQFor), Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo (DQ/FFCLRP/USP), Avenida Bandeirantes, 3900, Bairro Monte Alegre, Ribeirão Preto, SP, CEP 14040-901, Brazi https://orcid.org/0000-0002-2784-3660
  • Nelson Ramos Stradiotto Instituto de Química, Universidade Estadual Paulista (IQ-UNESP). Av. Prof. Francisco Degni, 55 - Jardim Quitandinha, Araraquara, SP, CEP 14800-900, Brazil https://orcid.org/0000-0002-1227-5242
  • Marcelo Firmino de Oliveira Grupo de Eletroquímica, Eletroanalítica e Química Forense (GEEQFor), Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo (DQ/FFCLRP/USP), Avenida Bandeirantes, 3900, Bairro Monte Alegre, Ribeirão Preto, SP, CEP 14040-901, Brazi https://orcid.org/0000-0003-0858-2044

DOI:

https://doi.org/10.5599/jese.2262

Keywords:

Vitamin C, carbon electrodes, voltammetry techniques, standard addition method, juice samples

Abstract

Determining the vitamin C (ascorbic acid) content in citrus fruits is crucial for dietary and nutritional considerations. Traditional analytical methods for ascorbic acid analysis often involve expensive and less portable electrodes, limiting their practicality in food analysis. This study focuses on the quantification of ascorbic acid in citrus fruits using a cost-effective and portable carbon screen-printed electrode. The efficiency of these electrodes was assessed using cyclic voltammetry and linear sweep voltammetry due to the irreversible oxidation behavior of ascorbic acid. A comparative analysis was performed with glassy carbon, carbon paste, and commercial carbon screen-printed electrodes, focusing on sensi¬tivity variations based on analyte concentration and scanning rate. The carbon screen-printed electrode demonstrated superior sensitivity to the other electrodes tested, establishing it as a practical alternative for ascorbic acid analysis in citrus fruits. This study employed the standard addition method in conjunction with linear sweep voltam¬metry to accurately determine ascorbic acid concentrations in pear-orange, Tahiti lemon, and Ponkan tangerine samples. The obtained values were cross-referenced with existing literature data, enhancing our understanding of vitamin C content in these citrus fruits. Overall, this research highlights the potential of the carbon screen-printed electrode as a valuable tool for vitamin C analysis, offering new insights into food science and nutrition.

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Published

03-03-2025

Issue

Vol. 15 No. 2 (2025)

Section

Electroanalytical chemistry

License

Copyright (c) 2025 Journal of Electrochemical Science and Engineering

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This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

Comparative voltammetric determination of ascorbic acid at three different carbon electrodes: application of carbon screen-printed electrode for citrus fruits analysis: Original scientific paper. (2025). Journal of Electrochemical Science and Engineering, 15(2), Article 2262. https://doi.org/10.5599/jese.2262

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