Pulse radiolytic study of alpha-tocopherol radical mechanisms in ethanolic solution

Journal Article · Wed Jan 01 00:00:00 EST 1986 · J. Free Radi. Biol. Medic.; (United States)

DOI:https://doi.org/10.1016/S0748-5514(86)80043-5· OSTI ID:6212564

Jore, D; Patterson, L K; Ferradini, C

Pulse radiolytic studies of alpha-tocopherol (alpha TH) oxidation-reduction processes were carried out with low doses (5 Gy) of high-energy electrons in O/sub 2/-, N/sub 2/-, and air-saturated ethanolic solutions. Depending on the concentration of oxygen in solution, two different radicals, A . and B ., were observed. The first, A ., was obtained under N/sub 2/ and results from alpha TH reaction with solvated electron (k alpha TH + e-solv = 3.4 X 10(8) mol-1 liter s-1) and with H/sub 3/C-CH-OH, (R.) (k alpha TH + R. = 5 X 10(5) mol-1 liter s-1). B., observed under O/sub 2/, is produced by alpha TH reaction with RO/sub 2/ . peroxyl radicals (k alpha TH + RO/sub 2/ . = 9.5 X 10(4) mol-1 liter s-1).

• Research Organization: Universite Rene Descartes, Paris, France
• OSTI ID: 6212564
• Journal Information: J. Free Radi. Biol. Medic.; (United States), Vol. 2:5-6
• Country of Publication: United States
• Language: English

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