Antioxidant effects of carotenoids in a model pigment-protein complex.

Joanna Fiedor; Aleksandra Sulikowska; Aleksandra Orzechowska; Leszek Fiedor; Květoslava Burda

doi:10.18388/abp.2012_2172

Antioxidant effects of carotenoids in a model pigment-protein complex.

Joanna Fiedor AGH University of Science and Technology, Kraków, Poland. Joanna.Fiedor@fis.agh.edu.pl;
Aleksandra Sulikowska
Aleksandra Orzechowska
Leszek Fiedor
Květoslava Burda

DOI: https://doi.org/10.18388/abp.2012_2172

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.

Published

2012-03-17

Issue

Vol. 59 No. 1 (2012)

Section

Articles

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