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    The reduction potential of the beta-carotene.+ /beta-carotene couple in an aqueous micro-heterogeneous environment.

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    Authors
    Edge, Ruth
    Land, Edward J
    McGarvey, David J
    Burke, Marc
    Truscott, T G
    Affiliation
    School of Chemistry and Physics, Lennard-Jones Laboratories, Keele University, Keele, UK.
    Issue Date
    2000-04-14
    
    Metadata
    Show full item record
    Abstract
    There is a resurgence of interest in the role of electron transfer reactions involving beta-carotene in photosynthesis. There is also current debate on the health benefits of dietary carotenoids and the possible deleterious effects on certain sub-populations such as smokers. The impact of dietary carotenoids on health may well be also related to radical reactions. A key parameter in biological systems is therefore the one-electron reduction potential of the carotenoid radical cation, now reported for the first time in a model biological aqueous environment. The value obtained is 1.06+/-0. 01 V and is sufficiently high to oxidise cell membrane proteins, but is low enough to repair P(680).+ in the photosynthetic reaction centre.
    Citation
    The reduction potential of the beta-carotene.+ /beta-carotene couple in an aqueous micro-heterogeneous environment. 2000, 471 (2-3):125-7 FEBS Lett.
    Journal
    FEBS letters
    URI
    http://hdl.handle.net/10541/88048
    PubMed ID
    10767406
    Type
    Article
    Language
    en
    ISSN
    0014-5793
    10.1016/S0014-5793(00)01366-1
    Collections
    All Paterson Institute for Cancer Research

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