An official website of the United States government.

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

National Agricultural Library
U.S. Department of Agriculture
  1. Home
  2. Research Tools
  3. Food Safety Research Projects Database
  4. Natural Isotope Ratio of Bioelements as an Indicator of the Origin of Animal Products and of Animal Protein in Ruminant Feed

Natural Isotope Ratio of Bioelements as an Indicator of the Origin of Animal Products and of Animal Protein in Ruminant Feed

Objective

Global and positional isotope contents of organic natural materials are determined by biosynthesis and the isotope effects involved therein. Using this method that the *18O-value of the oxygen atom in p-position of tyrosin was found to be characteristic of its biosynthesis by plants or animals. This investigation will deal with if and how exactly the percentage of vegetable and animal protein sources in animal feed can be determined by the *18O-value of tyrosin from ruminant proteins.

More information

<P> For more information, please visit the <a href="http://www.bayfor.org/en/portfolio/research-cooperations/world-of-livin…; target="_blank">FORPRION Research Program</a>.

Investigators
Bauer, Johann
Institution
Technical University of Munich
Start date
2001
End date
2007
Project number
TUM 12