| Popis: |
We have previously demonstrated that carotenoids which support the color of the red pigmented strains of Deinococcus radiodurans could be responsible for the antioxidant activity of these bacteria submitted to hydroxy radicals. Here we report on the isolation and identification of the major carotenoid of this bacterium. Based on UV/Vis-, 1 H NMR- and mass spectra as well as the chemical properties the carotenoid was identified as (all- E )-2,1′-dihydroxy-3′-4′-didehydro-1′,2′-dihydro-β,ψ-carotene-4-one 1 . This carotenoid has never been isolated before and we propose the name deinoxanthin for this new compound. The constitution of a new carotenoid 1 was determined by chemical and spectroscopic methods. |
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