Abstract
The effect of heavy water on the rate of methyl linoleate oxidation in Triton X-100 micelles is studied. It is established that the rate of oxidation in heavy water increases due to the exchange of hydroperoxide radicals \(({\text{HO}}_{2}^{ \bullet })\) for deuteroperoxide radicals \(({\text{DO}}_{2}^{ \bullet }),\) which leads to a decrease in the rate of chain termination. The formation of \({\text{DO}}_{2}^{ \bullet }\) is confirmed by the decrease in the inhibition coefficients by nitroxide radicals, and the propagation of the chain by the reaction of \({\text{DO}}_{2}^{ \bullet }\) with a molecule of methyl linoleate is confirmed by the decrease in the rate of oxidation in the presence of superoxide dismutase.
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ACKNOWLEDGMENTS
The authors thank Professor E.M. Pliss for his useful discussion.
Funding
This study was supported by the Russian Science Foundation (grant no. 20-13-00148).
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Moskalenko, I.V., Tikhonov, I.V. H/D Kinetic Solvent Isotope Effect in the Oxidation of Methyl Linoleate in Triton X-100 Micelles. Russ. J. Phys. Chem. B 16, 602–605 (2022). https://doi.org/10.1134/S1990793122040121
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DOI: https://doi.org/10.1134/S1990793122040121