Foods contaminated by foodborne pathogens have always been a great threat to human life. Herein, we constructed an electrochemical immunosensor for Salmonella detection by using a Fe3O4@graphene modified electrode. Because of the excellent electrical conductivity and mechanical stability of graphene and the large specific surface area of Fe3O4, the Fe3O4@graphene nanocomposite exhibits an excellent electrical signal, which greatly increased the sensitivity of the immunosensor. Gold nanoparticles were deposited on Fe3O4@graphene nanocomposite by electrochemical technology for the immobilization of the antibody. Cyclic voltammetry was selected to electrochemically characterize the construction process of immunosensors. The microstructure and morphology of related nanocomposites were analyzed by scanning electron microscopy. Under optimized experimental conditions, a good linear relationship was achieved in the Salmonella concentration range of 2.4 Ã— 102 to 2.4 Ã— 107 cfu/mL, and the limit...
A novel electrochemical immunosensor based on Fe3O4@graphene nanocomposite modified glassy carbon electrode for rapid detection of Salmonella in milk.
Jinsheng Zhang, State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, China. E-mail email@example.com
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Kaiwen Feng, Ting Li, Cuizhu Ye, Xiaoyu Gao, Xianglin Yue, Shuangyan Ding, Qiuling Dong, Mingqi Yang, Ganhui Huang, Jinsheng Zhang; A novel electrochemical immunosensor based on Fe3O4@graphene nanocomposite modified glassy carbon electrode for rapid detection of Salmonella in milk.. IFIS Food and Health Sciences Database 2022; doi:
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