Photochemical and Photophysical Properties of Carotenoids and Reactive Oxygen Species: Contradictions Relating to Skin and Vision

Fritz Boehm, Ruth Edge, T. George Truscott

Research output: Contribution to journalReview articlepeer-review

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Abstract

Molecular mechanisms based on photo-physical processes involving dietary carotenoids, their radicals, and the role of oxygen are discussed and used to suggest explanations of the poorly understood and often contradictory results related to mainly skin and vision. Differing and conflicting efficiencies of singlet oxygen reactions with carotenoids of biological importance are discussed in
environments from ‘simple’ organic solvents to single He La cells. A range of free radical reactions with carotenoids, and the corresponding radicals of the carotenoids themselves, are compared and used to explain the switch from beneficial to deleterious processes involving dietary carotenoids and to unravel their differing functions; of particular interest is a possible role for vitamin C.
Original languageEnglish
Pages (from-to)322-335
Number of pages14
JournalOxygen
Volume3
Issue number3
Early online date3 Aug 2023
DOIs
Publication statusPublished - 1 Sept 2023

Keywords

  • carotenoids
  • B-carotene
  • lycopene
  • zeaxanthin
  • lutein
  • astaxanthin
  • reactive oxygen species
  • reactive nitrogen species
  • singlet oxygen

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