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Journal of Radioanalytical and Nuclear Chemistry

, Volume 177, Issue 2, pp 253–259 | Cite as

Protein determination in single corns

  • J. Knorr
  • M. Schiekel
  • W. Franke
  • F. Focke
Article

Abstract

Determination of protein content in food materials is usually done by analyzing the nitrogen amount by wet chemical Kjeldahl method. An improved accuracy accompanied by smaller analyzing intervals can be achieved using nondestructive neutron activation. Analyses have been performed using 14 MeV neutrons to determine the content of N and P in single wheat corns. Irradiation parameters have been optimized to prevent serious radiation damage in the grains. About 200 single corns have been investigated with total net weights ranging from 30 to 70 mg. The tested arrangement allows determination of nitrogen amount in a single corn down to 0.3 mg with an accuracy of better than 4%. Mean nitrogen concentrations in the range from 9 to 19% per corn have been detected.

Keywords

Corn Protein Content Neutron Activation Nitrogen Concentration Radiation Damage 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Akadémiai Kiadó 1994

Authors and Affiliations

  • J. Knorr
    • 1
  • M. Schiekel
    • 1
  • W. Franke
    • 1
  • F. Focke
    • 2
  1. 1.Technical University of DresdenDresden(Germany)
  2. 2.Institute for Plant GrowingBernburg-Hadmersleben(Germany)

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