Magnetic Microsphere Capture for Rapid Multiplex Analyte Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for detecting harmful bacteria in food and environmental samples require lengthy sample preparation and enrichment processes, often necessitating multiple steps and specific protocols for each type of sample, which can lead to inefficiencies and increased risk of contamination.
Innovation Solution
A method involving the use of functionalized magnetic microspheres that bind specifically to antigenic materials, allowing for rapid enrichment and detection of multiple target analytes in a single test, utilizing a receptor-based system that includes homogenization, enrichment, and immunomagnetic separation, followed by precipitation and isolation of the bound analytes for subsequent diagnostic analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional enrichment methods are used to detect harmful bacteria, then the detection sensitivity is improved, but the sample preparation time increases significantly
Solution Approach 1:
The patent introduces magnetic microspheres as an intermediary substance that binds specifically to target bacteria. These microspheres serve as a mediator between the sample and detection system, enabling rapid separation and concentration of target analytes without requiring lengthy enrichment processes. The magnetic properties allow for quick isolation using external magnetic fields, dramatically reducing preparation time while maintaining detection sensitivity.
Solution Approach 2:
The patent replaces traditional mechanical enrichment methods (incubation, centrifugation, filtration) with a magnetic field-based separation system. By using magnetically functionalized microspheres, the system substitutes complex mechanical processing with a simpler magnetic separation approach, achieving both rapid processing and high detection sensitivity.
2Measurement precision
If multiple separate tests are performed for different analytes, then the detection accuracy for each target is maintained, but the overall testing complexity and time increase
Solution Approach 1:
The patent designs a universal detection platform where magnetic microspheres can be functionalized with different receptors to detect multiple types of analytes (bacteria, viruses, toxins) using the same basic methodology. This multi-functional approach allows a single test system to handle various pathogens, reducing overall testing complexity while maintaining detection accuracy through specific receptor-analyte binding.
Solution Approach 2:
The patent combines multiple detection capabilities into a single integrated system. By using magnetic microspheres that can be functionalized with different receptors, the system merges what would traditionally require separate tests into one unified platform, enabling simultaneous or sequential detection of multiple analytes without increasing procedural complexity.
3Reliability
If specific enrichment media is used for each bacteria strain, then the detection reliability is improved, but the protocol complexity increases for different sample types
Solution Approach 1:
The patent changes the key parameter from chemical enrichment media composition to magnetic microsphere receptor specificity. Instead of developing different chemical media for each bacteria strain, the system maintains a universal magnetic separation platform and achieves strain-specific detection by changing the receptor functionalization on the microspheres. This parameter change simplifies the overall protocol while maintaining detection reliability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach significantly reduces sample preparation time, enables the simultaneous detection of multiple analytes, and enhances the reliability of bacterial detection, aligning with the need for rapid and efficient testing in the food and pet food industries.
Implementation Method 1
adding either non-functionalized microspheres or functionalized receptor-conjugated magnetic microspheres and a solution to the sample to form a mixture; allowing the receptor to specifically bind to the exposed antigenic materials
Implementation Method 2
precipitating the antigen-containing materials out of the mixture when the antigenic materials become specifically bound to the magnetic microspheres to form a precipitate and a supernatant
Data Source
AI summary
A method and apparatus for the rapid and reliable preparation of a sample for use in testing for target analytes such as bacteria, viruses, toxins and pathogenic agents in various products. A sample for testing the target analyte is collected from various sources. The method for sample preparation provides for an express process for preparing collected samples for testing. The collected sample may be concentrated by centrifugation, filtration, or other means suitable for sample concentration, homogenized with the addition of a broth and enriched for specified period of time. Immunomagnetic separation of the sample occurs with receptor-coated magnetic microspheres in different test-specific formulations (singleplex or multiplex). An automatic testing system is disclosed which includes a biological testing cassette, in which testing of the sample occurs using liquid crystal diagnostic methodologies.