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

• Reviews • Previous Articles     Next Articles

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

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

CLC Number: