Rate constants of reactions of κ-carrageenan with hydrated electron and hydroxyl radical

The rate constants for the reactions of κ-carrageenan with hydrated electron and hydroxyl radical was investigated by pulse radiolysis and laser photolysis. The kinetics of the reaction of hydrated electron indicates no seeming reaction with κ-carrageenan. On the other hand, hydroxyl radical reacts...

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Bibliographic Details
Published inNuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms Vol. 265; no. 1; pp. 410 - 413
Main Authors Abad, L.V., Saiki, S., Kudo, H., Muroya, Y., Katsumura, Y., de la Rosa, A.M.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.12.2007
Subjects
Laser photolysis
Pulse radiolysis
κ-Carrageenan
κ-Carrageenan
Pulse radiolysis
Laser photolysis
87.50.−a
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Summary:The rate constants for the reactions of κ-carrageenan with hydrated electron and hydroxyl radical was investigated by pulse radiolysis and laser photolysis. The kinetics of the reaction of hydrated electron indicates no seeming reaction with κ-carrageenan. On the other hand, hydroxyl radical reacts very rapidly with κ-carrageenan at a rate constant of approximately 1.2 × 10 9 M −1 s −1. This rate constant varies with pH.
ISSN:0168-583X
1872-9584
DOI:10.1016/j.nimb.2007.09.014