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FOOD SCIENCE
2020
(9)
263-268
磁弛豫开关纳米传感器在食品安全检测中的研究进展
作 者：
汪荣;许宙;陈艳秋;陈茂龙;朱颖越;丁利;程云辉
单 位：
长沙理工大学化学与食品工程学院
关键词：
磁弛豫开关;磁性纳米材料;食品安全
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(T_2)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。
译 名：
Progress in Application of Magnetic Relaxation Switch Nanosensor in Food Safety Detection
作 者：
WANG Rong;XU Zhou;CHEN Yanqiu;CHEN Maolong;ZHU Yingyue;DING Li;CHENG Yunhui;School of Chemistry and Food Engineering, Changsha University of Science and Technology;Fapon Biotech Inc.;School of Biotechnology and Food Engineering, Changshu Institute of Technology;
关键词：
magnetic relaxation switch;;magnetic nanomaterials;;food safety
摘 要：
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(T_2) 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.
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