Ultrasensitive analyses of zearalenone in grain samples with a catalytic oxidation platform involving gold nanomaterials

文献类型： 外文期刊

第一作者： Zhao, Liyuan

作者： Zhao, Liyuan;Zhou, Longzhu;Dansou, Dieudonne M.;Tang, Chaohua;Zhang, Junmin;Qin, Yuchang;Yu, Yanan

作者机构：

关键词： Zearalenone; Gold nanoparticles; Nanosensor; Electrochemical detection; Grain

期刊名称：FOOD CHEMISTRY-X （ 影响因子：6.5； 五年影响因子：6.4 ）

ISSN： 2590-1575

年卷期： 2024 年 23 卷

页码：

收录情况： SCI

摘要： Zearalenone (ZEN) contamination in cereals poses a serious threat to human and animal health, yet existing rapid test methods still suffer from poor stability and low sensitivity. The studied sensor reduces inspection time while enabling applications for on-site grain inspection. Specifically, a ZEN detector that can sensitively detect ZEN content in grains was developed. Ion implantation is an effective method for modifying screen-printed electrodes (SPEs). Gold nanoparticles (AuNPs; 5-10 nm) were uniformly implanted using screen-printed electrodes as a catalytic oxidation medium to generate an electrochemical sensor. The surface structure of the modified electrode was characterized using scanning electron microscopy and X-ray photoelectron spectroscopy. The results showed that differential pulse voltammetry had good linear electrochemical response to ZEN at 10 ng/kg to 10 mg/kg, with a detection limit of 1.1 ng/kg. We used AuNP-SPE sensors to detect ZEN in grain samples such as maize and oats.

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