A phenol-interference decoupling method for hydroxyl-sanshools detection based on a modified electrode with magnesium-aluminum layered double hydroxide

Shen, Lingqin and Li, Jiashen and Zou, Xiaobo and Giampieri, Francesca and Battino, Maurizio and Zhang, Di UNSPECIFIED, UNSPECIFIED, UNSPECIFIED, francesca.giampieri@uneatlantico.es, maurizio.battino@uneatlantico.es, UNSPECIFIED (2025) A phenol-interference decoupling method for hydroxyl-sanshools detection based on a modified electrode with magnesium-aluminum layered double hydroxide. Journal of Food Composition and Analysis, 141. p. 107365. ISSN 08891575

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Abstract

In this work, a glassy carbon electrode modified with magnesium-aluminum layered double hydroxide (MgAl-LDH) was proposed to enhance the precision of hydroxy-sanshools quantification by mitigating polyphenol interference commonly found in the Zanthoxylum bungeanum pericarp during voltammetric assays. It was demonstrated that the MgAl-LDH-modified glassy carbon electrode effectively avoided the impact of polyphenols on hydroxy-sanshools by recovering their differential pulse voltammetric responses. Furthermore, the optimized method successfully quantified total hydroxy-sanshools in the linear range of 0.20–100.21 mg/g with good sensitivity (limit of detection and limit of quantification were 0.055 mg/L and 0.18 mg/L, respectively), and with recovery ranged from 95.66 % to 108.20 %. The intra-day and interday relative standard deviations were in the range of 0.43–3.13 % and 1.48–4.56 %, respectively. Additionally, the practicality of the developed approach was validated by quantifying hydroxy-sanshools in commercial Zanthoxylum bungeanum pericarp-related products, with results closely matching those obtained by high-performance liquid chromatography. These data reveals that the developed MgAl-LDH offers a novel strategy for modifying electrodes with high selectivity for the rapid monitoring of pungent substances in Zanthoxylum bungeanum pericarp.

Item Type: Article
Subjects: Subjects > Nutrition
Divisions: Europe University of Atlantic > Research > Scientific Production
Depositing User: Sr Bibliotecario
Date Deposited: 24 Jun 2025 09:21
Last Modified: 24 Jun 2025 09:21
URI: http://repositorio.funiber.org/id/eprint/17815

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