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ORIGINAL RESEARCH article

Front. Nutr.
Sec. Nutrition and Food Science Technology
Volume 11 - 2024 | doi: 10.3389/fnut.2024.1491345
This article is part of the Research Topic Nanotechnology in the Food Sector: Advances and Challenges View all 3 articles

Sensitive detection of gallic acid in food by electrochemical sensor fabricated by integrating nanochannel film with nanocarbon nanocomposite

Provisionally accepted
Jiasheng Li Jiasheng Li 1Jiahui Lin Jiahui Lin 2Tao Luo Tao Luo 1*Junjie Liu Junjie Liu 1Jiyang Liu Jiyang Liu 2*Wuning Zhong Wuning Zhong 1*
  • 1 Guangxi Medical University, Nanning, Guangxi Zhuang Region, China
  • 2 Zhejiang Sci-Tech University, Hangzhou, China

The final, formatted version of the article will be published soon.

    Sensitive detection of gallic acid (GA) in foods is of great significance for assessing the antioxidant properties of products and ensuring consumer health. In this work, a simple electrochemical sensor was conveniently fabricated by integrating vertically-ordered mesoporous silica film (VMSF) with electrochemically reduced graphene oxide (ErGO) and nitrogen graphene quantum dots (NGQDs) nanocomposite, enabling sensitive detection of GA in food sample. A water-soluble mixture of graphene oxide (GO) and NGQDs was drop-cast onto the common carbon electrode, glassy carbon electrode (GCE), followed by rapid growth of VMSF using an electrochemically assisted self-assembly method (EASA). The negative voltage applied during VMSF growth facilitated the in-situ reduction of GO to ErGO. The synergistic effects of ErGO, NGQDs, and the nanochannels of VMSF led to nearly a tenfold enhancement of the GA signal compared to that obtained on electrodes modified with either ErGO or NGQDs alone. Sensitive detection of GA was realized with a linear concentration range from 0.1 μM to 10 μM, and from 10 μM to 100 μM. The limit of detection (LOD), determined based on a signal-to-noise ratio of three (S/N = 3), was found to be 81 nM. Combined with the size-exclusion

    Keywords: electrochemical sensor, Vertically-ordered mesoporous silica film, Electrochemical reduced graphene, Graphene quantum dots, Gallic acid Abbreviations GA, gallic acid, VMSF, vertically-ordered mesoporous silica film, ErGO, reduced graphene oxide, NGQDs, nitrogen graphene quantum dots

    Received: 04 Sep 2024; Accepted: 31 Oct 2024.

    Copyright: © 2024 Li, Lin, Luo, Liu, Liu and Zhong. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence:
    Tao Luo, Guangxi Medical University, Nanning, 530021, Guangxi Zhuang Region, China
    Jiyang Liu, Zhejiang Sci-Tech University, Hangzhou, China
    Wuning Zhong, Guangxi Medical University, Nanning, 530021, Guangxi Zhuang Region, China

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.