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United States Department of Agriculture

Agricultural Research Service

Research Project: Technologies for Detecting and Determining the Bioavailability of Bacterial Toxins

Location: Foodborne Toxin Detection and Prevention

Title: Current methods for detecting the presence of botulinum neurotoxins in food and other biological samples

Authors
item CHENG, LUISA WAI WAI
item Land, Kirkwood -
item STANKER, LARRY

Submitted to: Book Chapter
Publication Type: Book / Chapter
Publication Acceptance Date: September 19, 2011
Publication Date: March 28, 2012
Citation: Cheng, L.W., Land, K.M., Stanker, L.H. 2012. Current methods for detecting the presence of botulinum neurotoxins in food and other biological samples. Morse, S., editor. Bioterrorism. Rijeka, Croatia: Intech. p. 1-16.

Interpretive Summary: Botulinum neurotoxins (BoNTs) are some of the most deadly bacterial toxins and are the cause of botulism. These toxins have the potential to be used as food contamination bio-threats and are classified as Select Agents. This book chapter will present background information on how BoNTs cause disease, how researchers design detection methods, and discuss the many challenges to making good detection assays. The book chapter will show examples of detection methods currently in use for measuring the presence of toxins in foods and other clinical or environmental samples.

Technical Abstract: Current methods for detecting the presence of botulinum neurotoxins in food and other biological samples Botulinum neurotoxins (BoNTs), the causative agents of botulism, are among the most lethal human bacterial toxins and the causative agent of botulism. BoNTs are also classified as Select Agents and have been used as agents of bioterrorism. Usually an identification of botulism is made through clinical manifestations and diagnosis, with subsequent confirmation by laboratory identification of clostridial spores or toxin in food, environmental, or clinical samples. The speed of recovery from botulism increases with the timely administration of antitoxin or medical interventions. Thus, sensitive and rapid toxin detection and diagnostic methods are critical for improved recovery time as well as facilitate the epidemiologic study of contamination and forensic identification of outbreaks. A multitude of assay formats have been developed over many years, with in some cases, reported sensitivities at the attomolar level. Many such assays are not usable for the detection of BoNT contamination in food or other complex biological samples. This book chapter focuses on the diagnostic methods for toxin detection and the challenges encountered in adapting analytical methods for detection of BoNTs in foods and other biological and environmental samples. The chapter will briefly describe the properties of BoNTs as they relate to detection methods, will compare and contrast methods currently in use for food and biological sample analyses, and discuss new methods under development.

Last Modified: 9/10/2014
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