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High Throughput Pathogen Screening for Food Safety Using Magnetoelastic Biosensors

机译：使用磁力弹性生物传感器的食品安全性高通量病原体筛选

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摘要

In order to secure food safety, high throughput pathogen screening technique that can quickly identify and isolate unsafe contaminated foods has been long-desired. Recently, magnetoelastic (ME) free-standing biosensors have been investigated as a label-free wireless biosensor system for real-time pathogen detection. ME biosensor is composed of a ME resonator coated with a bio-molecular recognition element that binds specifically with a target pathogen. Once the biosensor comes into contact with the target pathogen, binding occurs, resulting in a decrease of the sensor's resonant frequency. Interrogated through magnetic signals, large amount of ME sensors can be deployed and monitored wirelessly. ME biosensors have been investigated to detect foodborne pathogens in cultures and liquid foods. Recently, it has been demonstrated that phage-based ME biosensors are able to directly detect Salmonella Typhimurium on food surfaces without the requirement of pre-analysis culture preparation. This paper will review the novel ME biosensor technique, including the detection principle, the characterization of the sensor performance, the deployment of multiple sensor detection and their applications, especially for food safety analysis. The ME biosensor technique has the potential to be a powerful pathogen screening tool for detecting contaminated food, identifying critical hazard points, and tracking contamination sources along the entire food supply chain.
机译：为了确保食品安全，长期识别和分离不安全受污染食品的高通量病原体筛选技术已经长期存在。最近，已经研究了磁性弹性（ME）自由驻生的生物传感器作为无需型无线生物传感器系统，用于实时病原体检测。 Me Biosensor由涂有涂有生物分子识别元件的ME Aronator组成，所述生物分子识别元件与靶病原体特异性结合。一旦生物传感器接触目标病原体，就会发生绑定，导致传感器的谐振频率降低。通过磁信号询问，可以无线部署和监控大量ME传感器。已经研究了ME生物传感器以检测培养物和液体食品中的食源性病原体。最近，已经证明了基于噬菌体的ME生物传感器能够直接检测食物表面上的沙门氏菌毒蕈氏蕈类，而不需要预先分析培养制剂。本文将审查新型ME生物传感器技术，包括检测原理，传感器性能的表征，多种传感器检测的部署及其应用，尤其是食品安全分析。 ME生物传感器技术有可能成为一种强大的病原体筛选工具，用于检测污染的食物，识别临界危险点，以及沿整个食品供应链跟踪污染源。

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