Citation: Wen Qing WANG, Jian JIANG, Yu Rong ZHOU, Ji Lan WU. STUDIES ON THE ASYMMETRIC DECOMPOSITION OF D,L-LEUCINE INDUCED BY ⁶⁰Co γ-IRRADIATION[J]. Chinese Chemical Letters, ;1993, 4(4): 363-365. shu

STUDIES ON THE ASYMMETRIC DECOMPOSITION OF D,L-LEUCINE INDUCED BY ⁶⁰Co γ-IRRADIATION

Department of Technical Physics, Peking University, Beijing 100871

Sublimed D-,L-,and DL-leucine under vacuum were subjected to ⁶⁰Co γ-irradiation with different doses.The enantiomeric compositions of samples were determined by chirasilval capillary column gas chromatography,and the relative yields of radiolytic products (H₂,CO₂ and NH₃) were measured by packed column gas chromatography.The obtained data showed the peak area ratios D/L of DL-leucine after different absorbed doses of irradiation are all the same as that of samples with no irradiation,within the limit of error.So are the ratios for the separately irradiated D-and L-leuicne.This suggests that no asymmetric decomposition was found.The relative yields D/L of radiolytic products (H₂,CO₂ and NH₃) arevery close to 1.00,indicating that the D-leucine cleavage rate was the same with that of the L-leucine.From the view of dissipative structure,an explanation for the result was presented.
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