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Superoxide ion as active intermediate in the autoxidation of ascorbate by molecular oxygen. Effect of superoxide dismutase.
Open accessAbstract
The oxidation of ascorbic acid by molecular oxygen was investigated by optical and magnetic resonance methods in the presence and in the absence of copper and iron complexes. The results show that one superoxide ion is generated for each oxidized molecule of ascorbate. The effect of addition of Cu,Zn superoxide dismutase, which at concentrations higher than 10(-7) M halves the oxidation rate, is discussed and a reaction mechanism is proposed. An upper limit for the kinetic rate constant of the reaction between the ascorbate radical and the superoxide ion is reported.
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Citations
Cited by
Transition metals as catalysts of “autoxidation” reactions
Miller, D. (1990) · Free Radical Biology and Medicine · doi:10.1016/0891-5849(90)90148-c · Cited by 739
Antioxidant functions of phytic acid
Graf, E. (1990) · Free Radical Biology and Medicine · doi:10.1016/0891-5849(90)90146-a · Cited by 623
UV photoprotection by combination topical antioxidants vitamin C and vitamin E
Lin, J.-Y., Selim, M. A., Shea, C. R., Grichnik, J. M., Omar, M. M., Monteiro-Riviere, N. A., & Pinnell, S. R. (2003) · Journal of the American Academy of Dermatology · doi:10.1067/mjd.2003.425 · Cited by 358
Topical vitamin C protects porcine skin from ultraviolet radiation-induced damage
DARR, D., COMBS, S., DUNSTON, S., MANNING, T., & PINNELL, S. (1992) · British Journal of Dermatology · doi:10.1111/j.1365-2133.1992.tb00122.x · Cited by 337
Frei, B., Yamamoto, Y., Niclas, D., & Ames, B. N. (1988) · Analytical Biochemistry · doi:10.1016/0003-2697(88)90369-7 · Cited by 255
Metadata
- Authors
- Scarpa, M., Stevanato, R., Viglino, P., & Rigo, A.
- Venue
- Journal of Biological Chemistry
- Publisher
- Elsevier BV
- Published
- 1983-06
- Volume
- 258
- Issue
- 11
- Pages
- 6695-6697
- ISSN
- 0021-9258 (ISSN-L)
- OpenAlex
- W1547585735
- Cited by
- 161
- References
- 0
- FWCI
- 13.74
- Type
- journal article
- Language
- en
- Open access
- hybrid
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- CoChat. (2026). Citation check: Superoxide ion as active intermediate in the autoxidation of ascorbate by molecular oxygen. Effect of superoxide dismutase. https://app.cochat.ai/papers/10.1016/s0021-9258(18)32271-3
- The paper
- Scarpa, M., Stevanato, R., Viglino, P., & Rigo, A. (1983). Superoxide ion as active intermediate in the autoxidation of ascorbate by molecular oxygen. Effect of superoxide dismutase. Journal of Biological Chemistry. https://doi.org/10.1016/s0021-9258(18)32271-3
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
