title: The radiolysis and racemization of leucine on proton irradiation.
abstract: D- and L-Leucine have been subjected to 39-55 percent radiolysis using 0-11 MeV protons, both with the proton beam passing through the sample or being absorbed by it, and with quenching the sample immediately on completion of irradiation or after a 21-day interval. Racemization was small (1.1-1.7 percent) and comparable in all cases, suggesting that radioracemization and secondary degradative effects were not important factors in our recent unsuccessful attempts to induce optical activity in DL-leucine by partial radiolysis using 0-11 MeV longitudinally polarized protons.
mesh_terms: D004307:Dose-Response Relationship, Radiation; D007930:Leucine / Q000528:radiation effects*; D011522:Protons; D013997:Time Factors
chemical_list: D011522:Protons; D007930:Leucine