期刊
SENSORS
卷 22, 期 15, 页码 -出版社
MDPI
DOI: 10.3390/s22155663
关键词
foodborne pathogen; toxin; food safety; biosensor; giant magnetoresistance
资金
- Midwest Dairy Food Research Center [3006-11026-00098234]
- U.S. Department of Agriculture-National Institute of Food and Agriculture (NIFA) [2020-67021-31956]
The increasing number of foodborne disease outbreaks has attracted attention from the food industry and regulators. Traditional detection methods are not suitable for rapid detection. Giant magnetoresistance (GMR) biosensors have the potential to revolutionize food surveillance approaches. By utilizing nanotechnology, GMR biosensors can achieve high throughput screening of food samples at a lower cost, and with on-chip microfluidic channels and filtration function, can be fully automatic.
Nowadays, the increasing number of foodborne disease outbreaks around the globe has aroused the wide attention of the food industry and regulators. During food production, processing, storage, and transportation, microorganisms may grow and secrete toxins as well as other harmful substances. These kinds of food contamination from microbiological and chemical sources can seriously endanger human health. The traditional detection methods such as cell culture and colony counting cannot meet the requirements of rapid detection due to some intrinsic shortcomings, such as being time-consuming, laborious, and requiring expensive instrumentation or a central laboratory. In the past decade, efforts have been made to develop rapid, sensitive, and easy-to-use detection platforms for on-site food safety regulation. Herein, we review one type of promising biosensing platform that may revolutionize the current food surveillance approaches, the giant magnetoresistance (GMR) biosensors. Benefiting from the advances of nanotechnology, hundreds to thousands of GMR biosensors can be integrated into a fingernail-sized area, allowing the higher throughput screening of food samples at a lower cost. In addition, combined with on-chip microfluidic channels and filtration function, this type of GMR biosensing system can be fully automatic, and less operator training is required. Furthermore, the compact-sized GMR biosensor platforms could be further extended to related food contamination and the field screening of other pathogen targets.
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