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Abstract <p>The degradation of phenylalanine in an acidic aqueous solution (pH 3) with a concentration of 1.33&#xa0;× 10<sup>−3</sup> mol/L under the action of UV radiation from a mercury lamp (253.7 nm), hydroxyl radicals generated by cold plasma of a corona electric discharge, and hydroperoxyl radicals formed in water under the action of pulsed radiation of a hot plasma has been studied. The degradation product identified by the fluorescence method was tyrosine. The quantum yields of phenylalanine degradation and tyrosine formation in solutions saturated with and depleted in atmospheric oxygen have been determined. Possible reaction mechanisms are considered.</p>

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Mechanism of Phenylalanine Destruction under the Influence of UV Radiation and Reactive Oxygen Species

  • 期刊论文

  • 发表日期：

    2025年6月1日

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  • I. M. Piskarev

摘要

Abstract

The degradation of phenylalanine in an acidic aqueous solution (pH 3) with a concentration of 1.33 × 10−3 mol/L under the action of UV radiation from a mercury lamp (253.7 nm), hydroxyl radicals generated by cold plasma of a corona electric discharge, and hydroperoxyl radicals formed in water under the action of pulsed radiation of a hot plasma has been studied. The degradation product identified by the fluorescence method was tyrosine. The quantum yields of phenylalanine degradation and tyrosine formation in solutions saturated with and depleted in atmospheric oxygen have been determined. Possible reaction mechanisms are considered.