Autoxidation of tryptophan in aqueous solutions

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Abstract

Autoxidation of tryptophan was investigated in aqueous solutions by the gamma radiolytic technique. The oxygen uptake and formation of peroxide materials was followed as a function of pH, dose rate and concentration of tryptophan. The results obtained indicate that TrpH(OH)OO-radicals react with tryptophan by adduct formation thus propagating autoxidation. The chain propagation length (CPL) for a 2×10-2 mol dm-3 tryptophan solution at pH 9.5 and a dose rate 0.01 Gy s-1 was estimated to be ≈ 5.8, which shows that the autoxidation of tryptophan is a short chain reaction.

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Janković, I. A., & Josimović, L. R. (2001). Autoxidation of tryptophan in aqueous solutions. Journal of the Serbian Chemical Society, 66(9), 571–580. https://doi.org/10.2298/jsc0109571j

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