Journal of Microbiology

, Volume 50, Issue 3, pp 374–379

Antioxidant capacity of novel pigments from an Antarctic bacterium

Authors

    • Scientific and Cultural Bioscience Foundation
    • Doctorate of BiotechnologyUniversity of Santiago of Chile
  • Maximiliano J. Amenábar
    • Scientific and Cultural Bioscience Foundation
  • Jenny M. Blamey
    • Scientific and Cultural Bioscience Foundation
Articles

DOI: 10.1007/s12275-012-2029-1

Cite this article as:
Correa-Llantén, D.N., Amenábar, M.J. & Blamey, J.M. J Microbiol. (2012) 50: 374. doi:10.1007/s12275-012-2029-1

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.

Keywords

ROSantioxidant capacity assaysliposomesAntarcticapigments

Supplementary material

12275_2012_2029_MOESM1_ESM.pdf (176 kb)
Supplementary material, approximately 175 KB.

Copyright information

© The Microbiological Society of Korea and Springer-Verlag Berlin Heidelberg 2012