Stereoselectivity of X-irradiated amino acid enantiomers in H218O aqueous solution

Asymmetric radiation-induced decomposition of D,L-alanine and D,L-phenylalanine in isotope-enriched H218O aqueous solution has been investigated by use of a new method involving detection of 18O-marked products by nuclear reactions. X-irradiated D-enantiomers are revealed to be more sensitive for 18O trapping than their L-type counterparts.