SONOCHEMISTRY OF AQUEOUS SOLUTIONS OF AMINO ACIDS AND PEPTIDES. A SPIN TRAPPING STUDY.

C. Murali Krishna*, T. Kondo, P. Riesz

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

The sonolysis of argon-saturated neutral aqueous solutions of several amino acids and peptides was investigated by ESR and spin trapping. The water-soluble non-volatile spin trap, 3,5-dibromonitrosobenzene sulfonate, was found to be particularly useful for ESR and spin trapping investigations of sonochemical reactions. By comparison with analogous experiments in which hydroxyl radicals were generated by u. v. -photolysis of solutions containing hydrogen peroxide, the amino acid and peptide radicals produced by sonolysis could be identified. These observations can be explained by the reactions of hydrogen atoms and hydroxyl radicals which are the primary products of the sonolysis of water.

Original languageEnglish
Pages (from-to)121-128
Number of pages8
JournalRadiation Physics and Chemistry
Volume32
Issue number1
StatePublished - 1988

ASJC Scopus subject areas

  • Radiation

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