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An Integrated Flow Cytometry-Based System for Real-Time, High Sensitivity Bacterial Detection and Identification
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Journal Article
An Integrated Flow Cytometry-Based System for Real-Time, High Sensitivity Bacterial Detection and Identification
2014
Overview
Foodborne illnesses occur in both industrialized and developing countries, and may be increasing due to rapidly evolving food production practices. Yet some primary tools used to assess food safety are decades, if not centuries, old. To improve the time to result for food safety assessment a sensitive flow cytometer based system to detect microbial contamination was developed. By eliminating background fluorescence and improving signal to noise the assays accurately measure bacterial load or specifically identify pathogens. These assays provide results in minutes or, if sensitivity to one cell in a complex matrix is required, after several hours enrichment. Conventional assessments of food safety require 48 to 56 hours. The assays described within are linear over 5 orders of magnitude with results identical to culture plates, and report live and dead microorganisms. This system offers a powerful approach to real-time assessment of food safety, useful for industry self-monitoring and regulatory inspection.
Publisher
Public Library of Science,Public Library of Science (PLoS)
Subject
/ Bacteria
/ Bacteria - growth & development
/ Bacteria - isolation & purification
/ DNA
/ E coli
/ Escherichia coli O157 - growth & development
/ Flow Cytometry - instrumentation
/ Fluorescein-5-isothiocyanate - analysis
/ Food Microbiology - instrumentation
/ Food Microbiology - standards
/ Industrial Microbiology - instrumentation
/ Industrial Microbiology - methods
/ LDCs
/ R&D
/ Ralstonia pickettii - growth & development
/ Research and Analysis Methods
/ Safety
