Electrical impedance spectroscopy: potential non-destructive method for aflatoxin B1 in peanut

IF 2.9 3区农林科学 Q2 FOOD SCIENCE & TECHNOLOGY

Journal of Food Measurement and Characterization Pub Date : 2024-10-03 DOI:10.1007/s11694-024-02884-1

Longlong Feng, Meiyue Zhang, Zhanwei Dong, Jia Guo, Hanlu Zhang, Zhixia Liu

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引用次数: 0

Abstract

Achieving non-destructive detection of aflatoxin in peanuts can prevent the processing of aflatoxin-contaminated peanuts into food products. A potential non-destructive electrical impedance spectroscopy method for aflatoxin B1 (AFB₁) in peanuts is proposed. To research the relationship between electrical parameters and aflatoxins, this study analyzed the effects of improper storage duration on the content of aflatoxins and conducted experiments using impedance spectroscopy and NMR with different content of AFB₁. Results showed that the aflatoxin content was proportional to the number of days of improper storage. The impedance Z could as an indicator for characterizing AFB₁. The parameters of electrical impedance spectrum under multi-frequency (1000 Hz and 4 MHz) were better than those under the single frequency (1000 Hz or 4 MHz), and the combination of Z and θ showed the best correlation (R² = 0.998). The detection mechanism was accurate under improper storage conditions, and aflatoxin production was accompanied by moldy kernel, leading to changes in endosperm structure and impedance. Our study informs the development of non-destructive detection devices for aflatoxins in peanuts.

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电阻抗光谱法：检测花生中黄曲霉毒素 B1 的潜在非破坏性方法

实现对花生中黄曲霉毒素的无损检测可以防止受黄曲霉毒素污染的花生被加工成食品。本文提出了一种潜在的非破坏性电阻抗光谱法来检测花生中的黄曲霉毒素 B1（AFB1）。为了研究电学参数与黄曲霉毒素之间的关系，本研究分析了不当储存时间对黄曲霉毒素含量的影响，并利用阻抗光谱和核磁共振对不同含量的 AFB1 进行了实验。结果表明，黄曲霉毒素含量与不当贮藏天数成正比。阻抗 Z 可以作为表征 AFB1 的指标。多频率（1000 Hz 和 4 MHz）下的电阻抗谱参数优于单频率（1000 Hz 或 4 MHz）下的参数，Z 和 θ 的组合显示出最佳的相关性（R2 = 0.998）。在贮藏条件不当的情况下，黄曲霉毒素的产生伴随着果仁发霉，导致胚乳结构和阻抗发生变化，因此该检测机制是准确的。我们的研究为开发花生中黄曲霉毒素的非破坏性检测设备提供了参考。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Food Measurement and Characterization Agricultural and Biological Sciences-Food Science

CiteScore

6.00

自引率

11.80%

发文量

425

期刊介绍： This interdisciplinary journal publishes new measurement results, characteristic properties, differentiating patterns, measurement methods and procedures for such purposes as food process innovation, product development, quality control, and safety assurance. The journal encompasses all topics related to food property measurement and characterization, including all types of measured properties of food and food materials, features and patterns, measurement principles and techniques, development and evaluation of technologies, novel uses and applications, and industrial implementation of systems and procedures.