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Development of Portable Detection and Quantification Technologies For Foodborne Pathogens

Investigators
Paoli, George; He, Yiping; Gehring, Andrew
Institutions
USDA - Agricultural Research Service
Start date
2016
End date
2021
Objective

1: Develop rapid and efficient techniques that separate and concentrate and/or quantify targeted pathogens from food matrices. 1A. Apply rapid and high volume centrifugal flow concentration to the separation of bacteria from food matrices. 1B. Partition and concentrate bacteria using immunomagnetic separation with a new class of antibody-coated paramagnetic particles. 1C. Compare and contrast bacteria separation and concentration with flow-through filtration systems. 1D. Develop and validate procedures for the rapid and quantitative detection of multiple foodborne pathogens. 2: Develop and validate field testing kits that rapidly screen for the presence and quantification of pathogens and/or indicator microorganisms in foods at the initial processing level. 2A. Generate portable, label-free sensors (e.g., next generation cantilever microbalance) for rapid in-line or near-line screening of foods. 2B. Generate portable antibody and/or phage-based multiplex assays including integrated comprehensive droplet digital detection (IC 3D). 2C. Develop an AlphaLISA detection protocol for target pathogens. 2D. Develop a flow-through immunoelectrochemical detection device for field portable detection of target pathogens. 3: Develop and validate rapid methods for the identification of pathogens and/or indicator microorganisms in foods for application in either the field or testing laboratories. 3A. Generate phage and/or antibody typing arrays. 3B. Generate pathogen databases and improve the accuracy of the Beam (formerly BActerial Rapid Detection using Optical scattering Technology or BARDOT) system. 3C. Direct typing (colony isolates not required) of enriched samples using a targeted-sequencing method. 3D. Generate genome sequence-based typing and identification schemes using next-generation sequencing technology (e.g., MiSeq, Ion Torrent PGM, and MinION), and characterize virulence and antibiotic resistance of microbial pathogens.

Funding Source
Agricultural Research Service
ARS (NP108)
Project source
View this project
Project number
8072-42000-084-00D
Accession number
431165
Categories
Antimicrobial Resistance
Bacterial Pathogens
Viruses and Prions