Zhao Liyuan, Zhou Longzhu, Dansou Dieudonné M, Tang Chaohua, Zhang Junmin, Qin Yuchang, Yu Yanan
State Key Laboratory of Animal Nutrition and Feeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences Beijing 100193 China.
RSC Adv. 2024 Sep 16;14(40):29254-29259. doi: 10.1039/d4ra04753b. eCollection 2024 Sep 12.
Fumonisin B1 (FB1) is naturally present in the environment and can easily contaminate packaged foods during processing, storage and transportation, thus posing a threat to human health. We have developed an enzyme-free FB1 detector for the detection of packaged foods, which provides rapid and sensitive detection of FB1 in food. Gold nanoparticles (AuNPs; 5-10 nm) were uniformly dispersed on screen-printed electrodes, which acted as an excellent catalytic oxidizer. The surface structure of the modified electrode was characterized using scanning electron microscope and X-ray photoelectron spectroscopy. Differential pulse voltammetry demonstrated a good linear electrochemical response towards FB1 at concentrations ranging from 1 ng L to 1 mg L with a detection limit of 0.08 ng L. We employed the AuNPs-SPE sensor to detect FB1-spiked packaged meat products achieving recovery rates ranging from 89.7% to 113.3%.
伏马菌素B1（FB1）天然存在于环境中，在加工、储存和运输过程中很容易污染包装食品，从而对人体健康构成威胁。我们开发了一种用于检测包装食品的无酶FB1探测器，它能对食品中的FB1进行快速灵敏的检测。金纳米颗粒（AuNPs；5-10纳米）均匀分散在丝网印刷电极上，该电极作为一种出色的催化氧化剂。使用扫描电子显微镜和X射线光电子能谱对修饰电极的表面结构进行了表征。差分脉冲伏安法表明，在1纳克/升至1毫克/升的浓度范围内，对FB1有良好的线性电化学响应，检测限为0.08纳克/升。我们使用AuNPs-SPE传感器检测添加了FB1的包装肉制品，回收率在89.7%至113.3%之间。
