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- W2077871243 abstract "The most typical feature of carotenoids is the long polyene chain with conjugated double bonds suggesting that they can serve as conductors of electrons, acting as ''molecular wires'', important elements in the molecular electronic devices. Carotenoids are essential components of photosynthetic systems, performing different functions as light harvesting, photoprotection and electron transfer. They act also as natural antioxidants. In addition they perform structural role stabilizing the three-dimensional organization of photosynthetic membranes. Carotenoids contribute to the stability of the lipid phase, preserving the membrane integrity under potentially harmful environmental conditions. Carotenoids can be easily integrated into model membranes, facilitating the investigation of their functional roles. In carotenoid-egg phosphatidylcholine (EPC) liposomes ß-carotene is randomly distributed in the hydrocarbon interior of the bilayer, without any preferred, well defined orientation and retains a substantial degree of mobility. Here we investigate the degree of integration of ß-carotene in small unilamellar EPC liposomes and the changes in ß-carotene absorption and Raman spectra due to the lipid-pigment interaction. All observed changes in ß-carotene absorption and Raman spectra may be regarded as a result of the lipid-pigment interactions leading to the polyene geometry distortion and increasing of the environment heterogenety in the liposomes as compared to the solutions." @default.
- W2077871243 created "2016-06-24" @default.
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- W2077871243 date "2010-11-01" @default.
- W2077871243 modified "2023-10-17" @default.
- W2077871243 title "Integration of β-carotene molecules in small liposomes" @default.
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- W2077871243 doi "https://doi.org/10.1088/1742-6596/253/1/012066" @default.
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