Giant magnetic resistance sensor for rapid salmonella detection in chocolate
A GMR-based sensor system designed to swiftly detect Salmonella in chocolate production environments, with potential applications in diverse food matrices. Initially developed for clinical diagnostics, it now targets food safety through efficient pathogen detection.
Overview
The Giant Magnetic Resistance (GMR) sensor system is an innovative solution for rapid pathogen detection, specifically targeting Salmonella in chocolate production environments. Originally developed for clinical diagnostics to detect single-cell pathogens, the system has been adapted for food safety applications. It now efficiently identifies foodborne pathogens like E. Coli and Listeria in various food matrices, including dairy. The system's adaptability allows it to detect multiple pathogens in a single test, providing a versatile tool for ensuring food safety.
Technical specifications
The GMR sensor system operates by utilizing specific antibodies to target and detect pathogens. The system will be further tailored to identify Salmonella by functionalizing the GMR chip with specific capture and detection antibodies. Key features include:
- Ability to detect single-cell pathogens
- Versatility for adaptation to various food matrices and environments
- Potential for multi-pathogen detection in a single assay
- Proven efficacy in detecting Listeria monocytogenes in dairy products
Technology readiness level
Currently, the GMR sensor system has reached Technology Readiness Level 4. It has been successfully demonstrated in controlled laboratory settings for certain pathogens and is undergoing further validation for detecting Salmonella in chocolate, using surrogates and industrial samples.
About University of Minnesota
The University of Minnesota is a flagship, comprehensive public research university spanning multiple campuses, with a large research enterprise and clinical integration. Industry engages through co-located labs on the Twin Cities campuses, access to an academic health system for clinical translation, and pilot and field-testing facilities that speed scale-up. A statewide extension network and outreach centers provide real-world sites and data partnerships across Minnesota, while proximity to a dense medtech and Fortune 500 corridor enables frequent collaboration. Research is supported by competitive federal funding, including NIH, NSF, DOE, USDA, and DoD. A dedicated technology transfer office manages IP, licensing, sponsored research agreements, and startup incubation to speed commercialization.
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