Active Bio-Reactive Microneedle Patches for Food Spoilage Detection and Decontamination
McMaster University researchers have developed active microneedle patches that enhance food safety by providing real-time, visual color-coded spoilage detection and internal pathogen decontamination using bacteriophages. This non-destructive, food-safe technology helps reduce food waste and improves safety for both consumers and the food industry.
Overview
This technology features active bio-reactive microneedle patches designed to enhance food safety and reduce waste through real-time spoilage detection and targeted bacterial decontamination. These patches serve as a dual-action, non-destructive tool for both consumers and the food industry. By integrating directly into food packaging, the system provides an immediate visual indicator of freshness while simultaneously deploying antimicrobial agents to neutralize common pathogens, offering a superior alternative to traditional surface-level treatments.
Technical specifications
- Spoilage Detection: Employs natural, pH-responsive red cabbage anthocyanins embedded in a gelatin matrix. As food degrades, pH shifts cause the patch to transition from purple to blue, providing an intuitive, real-time visual signal.
- Decontamination: Utilizes microneedle arrays loaded with bacteriophages (phages) to penetrate food surfaces and deliver antibacterial agents directly into the interior matrix where pathogens reside.
- Performance: Demonstrated efficacy in reducing E. coli and Salmonella to regulatory safety levels in items like raw beef and ready-to-eat chicken.
- Mechanical Integrity: Patches are rigid and shelf-stable when dry, enabling them to pierce packaging without damage. Upon contact with moisture-rich food, they rehydrate into a soft hydrogel for active monitoring and diffusion.
- Versatility: Compatible with various food types, including meat, poultry, fish, cheese, and fresh produce.
Technology readiness level
The technology is currently at TRL 4 (Lab validation). Research and development have been conducted through academic studies, with successful proof-of-concept testing in laboratory settings on food matrices such as beef, chicken, and fish. Validation of decontamination efficacy and colorimetric sensing is well-documented in peer-reviewed literature, though further steps toward commercial scale, regulatory approval, and industrial...
About McMaster University
McMaster University is a comprehensive, research‑intensive public university in Hamilton, Ontario, known for collaborative, problem‑driven scholarship and strong partnerships with healthcare and industry. A research and technology park adjacent to campus co‑locates corporate R&D with faculty labs, while an established engineering co‑op connects companies with talent and applied expertise. Deep integration with regional hospital systems enables clinical trials, real‑world evidence generation, and translational studies at scale. Research is supported by competitive funding from NSERC, CIHR, SSHRC, and the Canada Foundation for Innovation. A dedicated technology transfer office streamlines IP strategy, contracting, and commercialization for industry partners.
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