An Investigation of the Possible Differential Radiolysis of Amino Acid Optical Isomers by 14C Betas

  • William J. Bernstein
  • Richard M. Lemmon
  • Melvin Calvin


A recent report by Garay presents evidence that, in alkaline solution, 90Sr β particles and/or their associated bremsstrahlung (γ -rays) cause a more rapid radiolysis of D-tyrosine than of L-tyrosine (1). The differential effect on the tyrosines was sought, but not found, in acidic solutions. The possible existence of this differential radiolysis was not tested on the crystalline tyrosine enantiomers.


Aspartic Acid Amino Acid Molecule Amino Acid Enantiomer 120C Amino Acid Pure Amino Acid 
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Copyright information

© Plenum Press 1972

Authors and Affiliations

  • William J. Bernstein
    • 1
  • Richard M. Lemmon
    • 1
  • Melvin Calvin
    • 1
  1. 1.Contribution from the Laboratory of Chemical Biodynamics, Lawrence Radiation Laboratory, and Department of ChemistryUniversity of CaliforniaBerkeleyUSA

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