Virus and Prion Research Unit Site Logo
ARS Home About Us Helptop nav spacerContact Us En Espanoltop nav spacer
Printable VersionPrintable Version     E-mail this pageE-mail this page
Agricultural Research Service United States Department of Agriculture
Search
  Advanced Search
 
Programs and Projects
Subjects of Investigation
 

Research Project: TRANSMISSION, DIFFERENTIATION, AND PATHOBIOLOGY OF TRANSMISSIBLE SPONGIFORM ENCEPHALOPATHIES

Location: Virus and Prion Research Unit

Title: A fluorescence based method, exploiting lipofuscin, for the real-time detection of central nervous system (CNS) tissues on bovine carcasses

Authors
item Schonenbrucher, Holger
item Adhikary, Ramkrishna - IOWA STATE UNIVERSITY
item Mukherjee, Prasun - IOWA STATE UNIVERSITY
item Casey, Thomas
item Rasmussen, Mark - SARTEC CORP, ANOKA, MN
item Maistrovich, Frank - IOWA STATE UNIVERSITY
item Hamir, Amirali
item Kehrli Jr, Marcus
item Richt, Juergen
item Petrich, Jacob - IOWA STATE UNIVERSITY

Submitted to: Journal of Agricultural and Food Chemistry
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: May 13, 2008
Publication Date: July 12, 2008
Repository URL: http://pubs.acs.org/cgi-bin/abstract.cgi/jafcau/asap/abs/jf0734368.html
Citation: Schonenbrucher, H., Adhikary, R., Mukherjee, P., Casey, T.A., Rasmussen, M.A., Maistrovich, F.D., Hamir, A.N., Kehrli, Jr., M.E., Richt, J.A., Petrich, J.W. 2008. Fluorescence-Based Method, Exploiting Lipofuscin, for Real-Time Detection of Central Nervous System Tissues on Bovine Carcasses. Journal of Agricultural and Food Chemistry. 56(15):6220-6226.

Interpretive Summary: The removal of Central Nervous System (CNS) tissues as part of Bovine Spongiform Encephalopathy (BSE) risk material is one of the highest priority safeguards to avoid contamination of the human food chain with BSE. No currently available method enables the real-time detection of possible CNS tissue contamination on bovine carcasses during slaughter. Therefore, we developed a fluorescence spectroscopy method for the real-time detection of CNS tissues. Small quantities of bovine spinal cord were reliably detected in the presence of raw bovine skeletal muscle, fat, and vertebrae. The present study revealed the potential of fluorescent marker substances such as lipofuscin for the real-time detection of spinal cord on bovine carcasses and processed meat cuts including bone-in or boneless products. A benefit to the beef producing industry would be improved product quality assurance and increased consumer protection.

Technical Abstract: The removal of Central Nervous System (CNS) tissues as part of Bovine Spongiform Encephalopathy (BSE) risk material is one of the highest priority tasks to avoid contamination of the human food chain with BSE. No currently available method enables the real-time detection of possible CNS tissue contamination on carcasses during slaughter. The fluorescent pigment lipofuscin is a heterogeneous, high-molecular weight material that has been shown to be enriched in high concentrations in neuronal tissues. In this study, lipofuscin fluorescence was investigated as a marker for real-time detection of CNS contamination. Front-faced fluorescence spectra of brain and spinal cord samples from 11 cattle gave identical, reproducible fluorescence signal patterns with high intensities. The specificity of these spectra was assessed investigating 13 different non-CNS tissues enabling the differentiation of brain and spinal cord by signal intensity and structure of the spectra, respectively. Small quantities of bovine spinal cord were reliably detected in the presence of raw bovine skeletal muscle, fat, and vertebrae. The presented data are the fundamental basis for the development of a prototype device allowing real-time monitoring of CNS tissue contamination on bovine carcasses and meat cuts.

   

 
Project Team
Nicholson, Eric
Kunkle, Robert
Greenlee, Justin
 
Publications
   Publications
 
Related National Programs
  Animal Health (103)
 
Patents
  H2N3 Influenza A Viruses And Methods Of Use
 
 
Last Modified: 05/23/2013
ARS Home | USDA.gov | Site Map | Policies and Links 
FOIA | Accessibility Statement | Privacy Policy | Nondiscrimination Statement | Information Quality | USA.gov | White House