Haloarchaea: A Promising Biosource for Carotenoid Production.

  title={Haloarchaea: A Promising Biosource for Carotenoid Production.},
  author={Montserrat Rodrigo-Ba{\~n}os and Zaida Montero and Javier Torregrosa-Crespo and In{\'e}s Garbayo and Carlos V{\'i}lchez and Rosa Mar{\'i}a Mart{\'i}nez-Espinosa},
  journal={Advances in experimental medicine and biology},
Haloarchaea are halophilic microorganisms belonging to the Archaea domain that inhabit salty environments (mainly soils and water) all around the world. Most of the genera included in this group are able to produce carotenoids at significant concentrations (even wild-type strains). The major carotenoid produced by the cells is bacterioruberin (and its derivatives), which is only produced by this kind of microbes. Nevertheless, the understanding of carotenoid metabolism in haloarchaea, its… 
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The findings suggest that the C50 carotenoids from the studied strains offer promising prospects for biotechnological applications.

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New scientific evidence of improved carotenoid production by one of the better known haloarchaeon (Haloferax mediterranei) is discussed and their potential uses in biotechnology and biomedicine are summarized.

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The procedure to obtain salinixanthin from the extremely halophilic bacterium Salinibacter ruber is described and the expression of the β-carotene biosynthetic genes crtE, crTY, crtI, and crtB from Pantoea agglomerans in the moderately halophile bacterium Halomonas elongata is described.

Carotenoid Production by Halophilic Archaea Under Different Culture Conditions

The effect of different culture conditions such as salt and carbon source concentrations in the medium, light incidence, and oxygen tension on carotenoid production by halophilic archaea is summarized and strategies such as optimization methodology and two-stage cultivation already used to increase the carOTenoid yield of these microorganisms are summarized.

Identification of carotenoids from the extremely halophilic archaeon Haloarcula japonica

The in vitro scavenging capacity of a carotenoid, bacterioruberin, extracted from Haloarcula japonica cells against 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals was evaluated and was much higher than that of β -carotene.

Potential of halotolerant and halophilic microorganisms for biotechnology

Halotolerant microorganisms play an essential role in food biotechnology for the production of fermented food and food supplements and the degradation or transformation of a range of organic pollutants and theproduction of alternative energy are other fields of applications of these groups of extremophiles.

Diversity of halophilic microorganisms: Environments, phylogeny, physiology, and applications

  • A. Oren
  • Biology, Environmental Science
    Journal of Industrial Microbiology and Biotechnology
  • 2002
Using a combination of culture techniques, molecular biological methods, and chemotaxonomic studies, information is obtained on the nature of the halophilic Archaea as well as the Halophilic Bacteria that inhabit saltern crystallizer ponds.

Optimization of Total Carotenoid Production by Halorubrum Sp. TBZ126Using Response Surface Methodology

Five levels of temperature, pH, and salinity were selected based on central composite design and RSM to reach the optimum values for the cell growth and carotenoid production in Halorubrum sp.

New Uses of Haloarchaeal Species in Bioremediation Processes

The main goal of the chapter is to present a review about the main characteristics of the archaeal species and their possible uses for bioremediation processes paying special attention to the Halobacteriaceae family.

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This review summarizes current knowledge about the biotechnological uses of archaea and archaeal enzymes with special attention to potential applications that are the subject of current experimental evaluation.