食品科学 ›› 2020, Vol. 41 ›› Issue (9): 263-268.doi: 10.7506/spkx1002-6630-20190507-053

• 专题论述 • 上一篇    下一篇

磁弛豫开关纳米传感器在食品安全检测中的研究进展

汪荣,许宙,陈艳秋,陈茂龙,朱颖越,丁利,程云辉   

  1. (1.长沙理工大学化学与食品工程学院,湖南 长沙 410114;2.菲鹏生物股份有限公司,广东 东莞 523808;3.常熟理工学院生物与食品工程学院,江苏 常熟 215500)
  • 出版日期:2020-05-15 发布日期:2020-05-15
  • 基金资助:
    国家自然科学基金青年科学基金项目(31401566);“十三五”国家重点研发计划重点专项(2016YFF0203701); 粮食深加工与品质控制湖南省2011协同创新项目(2013448);常熟市科技发展计划(社会发展类)项目(CS201605); 苏州市科技计划项目(SNG201617)

Progress in Application of Magnetic Relaxation Switch Nanosensor in Food Safety Detection

WANG Rong, XU Zhou, CHEN Yanqiu, CHEN Maolong, ZHU Yingyue, DING Li, CHENG Yunhui   

  1. (1. School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha 410114, China;2. Fapon Biotech Inc., Dongguan 523808, China;3. School of Biotechnology and Food Engineering, Changshu Institute of Technology, Changshu 215500, China)
  • Online:2020-05-15 Published:2020-05-15

摘要: 本文简述了磁弛豫开关纳米传感器的检测原理以及基于磁弛豫开关的纳米传感器在食品安全领域的应用。磁弛豫开关传感器是集生物传感、纳米技术、特异性识别等诸多优点于一身的分析检测技术,其主要原理是通过目标物介导的磁纳米颗粒聚集和分散状态引起水分子横向弛豫时间(T2)的变化而实现对目标物的检测。目前已广泛应用于对重金属离子、有机污染物、蛋白质、细菌以及病毒等的检测。与其他纳米传感器相比,基于磁弛豫开关的纳米传感器不仅不受背景干扰,也不需要繁琐的预处理步骤,具有高通量、快速、简便等诸多优点。

关键词: 磁弛豫开关, 磁性纳米材料, 食品安全

Abstract: This study describes the principle of the magnetic relaxation switch (MRS) nanosensor and its application in the field of food safety. The MRS sensor is an analytical technology that integrates biological sensing, nanotechnology and specific recognition with multiple advantages. This technology is based on the principle of detecting the change in the transverse relaxation time (T2) of water molecules caused by magnetic nanoparticle aggregation and decomposition medicated by the target object. It has been widely used in the detection of heavy metal ions, organic pollutants, proteins, bacteria and viruses. Compared with other nanosensors, the MRS nanosensor is not only free from background interference, but also does not require tedious pretreatment steps. It has many advantages such as high throughput screening, fast detection and simple operation.

Key words: magnetic relaxation switch, magnetic nanomaterials, food safety

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