Automated qpcr platform for rapid salmonella detection in chocolate
Fraunhofer IMM introduces a fully automated qPCR platform for detecting Salmonella in chocolate within hours. The system features homogenization, DNA purification, and multiplex qPCR, achieving a detection limit of 1 CFU/375g. Ideal for food safety applications.
Overview
The Fraunhofer Institute for Microengineering and Microsystems IMM presents an innovative automated platform designed for the rapid detection of Salmonella in chocolate products. This cutting-edge technology leverages quantitative Polymerase Chain Reaction (qPCR) to provide results within a few hours, significantly enhancing food safety protocols. The platform is capable of processing 375g of chocolate, ensuring comprehensive testing with a detection limit as low as 1 colony-forming unit (CFU) per 375g. This makes it an invaluable tool for chocolate manufacturers seeking to ensure product safety and compliance with stringent health regulations.
Technical specifications
- Homogenization and Sample Preparation: The system efficiently homogenizes up to 375g of chocolate, preparing it for further analysis.
- Bacteria Concentration: It concentrates Salmonella from large volumes to microliter scale for precise detection.
- DNA Purification and Multiplex qPCR: The platform employs advanced lysis and DNA purification techniques followed by multiplex qPCR, allowing for the detection of multiple Salmonella subspecies.
- Live/Dead Discrimination: An optional module for distinguishing between live and dead cells enhances the platform's utility.
- Automation: The platform can be semi or fully automated, integrating various processes for streamlined operation.
Technology readiness level
This technology is currently at TRL 4, indicating that it has been validated in laboratory settings with various sample matrices, including minced meat. Future validation efforts will focus on optimizing chocolate sample preparation and multiplex qPCR integration, paving the way for commercial deployment.
About Fraunhofer Institute
Fraunhofer is a large, multi-site applied research organization based in Germany, operating a nationwide network of institutes and research units with a strong industry-facing mission. Its contract-research model aligns work to real manufacturing and deployment needs, with pilot lines, test labs, and demonstration facilities for validation and scale-up. Many institutes are integrated with nearby universities and regional industry clusters, enabling joint appointments, shared infrastructure, and fast talent pipelines. Research is supported by competitive European programs alongside German federal and state funding, complemented by extensive contract revenue from private-sector collaborations. A dedicated technology transfer function manages IP, licensing, and startup formation.
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