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United States Department of Agriculture

Agricultural Research Service

Title: Immunological Biosensor-Based Methods

Authors
item Paoli, George
item Brewster, Jeffrey

Submitted to: American Chemical Society Abstracts
Publication Type: Proceedings
Publication Acceptance Date: May 20, 2004
Publication Date: August 26, 2004
Citation: Paoli, G., Brewster, J.D. 2004. Immunological biosensor-based methods. American Chemical Society Abstracts.

Technical Abstract: Traditional methods for the detection of microbial food-borne pathogens require 3-7 days to obtain a result. The introduction of HACCP plans and the requirement that raw meat products be held in inventory until test results are confirmed has increased the need for more rapid detection methods. Recently, a variety of rapid methods (8-48 hours) have been developed. Many of these rapid methods utilize antibody molecules to capture and detect food-borne pathogens. Thus, the development of these immunosensor methods depends on the availability of antibodies with sufficient specificity. Rapid detection of Listeria monocytogenes has been hampered by the lack of polyclonal serum or monoclonal antibodies that can specifically detect the organism at the species level. Antibody phage display has been employed to isolate a single-chain antibody fragment specific for L. monocytogenes and this single-chain antibody is being used to develop immunosensors for the detection of L. monocytogenes in food.

Last Modified: 12/18/2014
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