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HOME > J. Microbiol > Volume 50(3); 2012 > Article
Research Support, Non-U.S. Gov't
Antioxidant Capacity of Novel Pigments from an Antarctic Bacterium
Daniela N. Correa-Llantén 1,2, Maximiliano J. Amenábar 1, Jenny M. Blamey 1
Journal of Microbiology 2012;50(3):374-379.
DOI: https://doi.org/10.1007/s12275-012-2029-1
Published online: June 30, 2012
1Scientific and Cultural Bioscience Foundation, Jose Domingo Canas 2280, Santiago, Chile, 2Doctorate of Biotechnology, University of Santiago of Chile, Av. Libertador Bernardo O Higgins 3363, Santiago, Chile
Corresponding author:  Daniela N. Correa-Llantén , Tel: +56-2-3432578, 
Received: 25 January 2012   • Accepted: 3 April 2012
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Abstract

In Antarctica microorganisms are exposed to several conditions that trigger the generation of reactive oxygen species, such as high UV radiation. Under these conditions they must have an important antioxidant defense system in order to prevent oxidative damage. One of these defenses are pigments which are part of the non-enzymatic antioxidant mechanisms. In this work we focused on the antioxidant capacity of pigments from an Antarctic microorganism belonging to Pedobacter genus. This microorganism produces different types of pigments which belong to the carotenoids group. The antioxidant capacity of a mix of pigments was analyzed by three different methods: 1,1-diphenyl-2-picrylhydrazyl, ROS detection and oxygen electrode. The results obtained from these approaches indicate that the mix of pigments has a strong antioxidant capacity. The oxidative damage induced by UVB exposure to liposomes was also analyzed. Intercalated pigments within the liposomes improved its resistance to lipid peroxidation. Based on the analysis carried out along this research we conclude that the antioxidant properties of the mix of pigments protect this bacterium against oxidative damage. These properties make this mix of pigments a powerful antioxidant mixture with potential biotechnological applications.

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    Antioxidant Capacity of Novel Pigments from an Antarctic Bacterium
    J. Microbiol. 2012;50(3):374-379.   Published online June 30, 2012
    DOI: https://doi.org/10.1007/s12275-012-2029-1
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