Note: Antioxidant properties of lipid fractions from Deinococcus radiophilus strain UWO1055 |
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Authors: | E Shimoni R Armon & I Neeman |
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Institution: | Department of Food Engineering and Biotechnology,;Department of Environmental and Water Resources Engineering, Technion, Haifa, Israel |
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Abstract: | Lipids of the radio-resistant bacterium Deinococcus radiophilus were tested for their antioxidant properties. The crude lipid extract showed a significant antioxidant effect in linoleic acid emulsion. The crude extract was separated to polar and non-polar lipid fractions. The non-polar fraction showed an antioxidant effect in both suspensions and emulsions of linoleic acid, and inhibition of oxidation in a β-carotene emulsion. Lipids of the non-polar fraction were separated and their antioxidant activity was determined in a β-carotene emulsion; the lipid that was marked NP9 showed the highest antioxidant effect. Lipid NP9 inhibited oxidation in a β-carotene emulsion in the concentration range of 5–51 ppm. It is suggested that the antioxidant activity of lipids of D. radiophilus contribute to its radio-resistance. |
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