title: Antioxidant effects of carotenoids in a model pigment-protein complex.
abstract: The effect of carotenoids on stability of model photosynthetic pigment-protein complexes subjected to chemical oxidation with hydrogen peroxide or potassium ferricyanide was investigated. The oxidation of carotenoid-less and carotenoid-containing complexes was conducted in the presence or absence of ascorbic acid. The progress of the reactions was monitored by use of absorption and fluorescence spectroscopy. Our results show that carotenoids may significantly enhance the stability of photosynthetic complexes against oxidation and their protective (antioxidant) effect depends on the type of the oxidant.
authors.affiliation: AGH University of Science and Technology, Kraków, Poland. Joanna.Fiedor@fis.agh.edu.pl
authors.forename: Joanna
authors.initials: J
authors.lastname: Fiedor
authors.forename: Aleksandra
authors.initials: A
authors.lastname: Sulikowska
authors.forename: Aleksandra
authors.initials: A
authors.lastname: Orzechowska
authors.forename: Leszek
authors.initials: L
authors.lastname: Fiedor
authors.forename: Květoslava
authors.initials: K
authors.lastname: Burda
mesh_terms: D000975:Antioxidants / Q000378:metabolism*; D002338:Carotenoids / Q000378:metabolism*; D006861:Hydrogen Peroxide / Q000378:metabolism; D010084:Oxidation-Reduction; D013050:Spectrometry, Fluorescence
chemical_list: D000975:Antioxidants; D002338:Carotenoids; D006861:Hydrogen Peroxide