Document Detail

Antioxidant capacity of novel pigments from an Antarctic bacterium.
MedLine Citation:
PMID:  22752899     Owner:  NLM     Status:  In-Data-Review    
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.
Daniela N Correa-Llantén; Maximiliano J Amenábar; Jenny M Blamey
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Publication Detail:
Type:  Journal Article     Date:  2012-06-30
Journal Detail:
Title:  Journal of microbiology (Seoul, Korea)     Volume:  50     ISSN:  1976-3794     ISO Abbreviation:  J. Microbiol.     Publication Date:  2012 Jun 
Date Detail:
Created Date:  2012-07-03     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9703165     Medline TA:  J Microbiol     Country:  Korea (South)    
Other Details:
Languages:  eng     Pagination:  374-9     Citation Subset:  IM    
Scientific and Cultural Bioscience Foundation, Jose Domingo Canas, 2280, Santiago, Chile,
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