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Preservation of carotenoids in salts and Mars regolith in various conditions

Horky, Dominik and Leya, Thomas and de Vera, Jean Pierre Paul and Baqué, Mickael (2021) Preservation of carotenoids in salts and Mars regolith in various conditions. DABG Workshop, 27.-29. September 2021, Essen.

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The search for life on Mars requires new tools and techniques. Among them, Raman spectroscopy is a powerful and non-destructive method for detecting biosignatures during missions to Mars such as NASA’s Perseverance and ESA/ROSCOSMOS’s Rosalind Franklin rovers. It is therefore important to study the detection possibilities of model biosignatures and their preservation in various conditions over time in order to guide future missions and interpret future data. Cyanobacterial photoprotective pigments (namely carotenoids) have been extensively used as suited targets for such measurements and to serve as biosignature models thanks to their stability and easy identification by Raman spectroscopy. Carotenoid decomposition can be caused by oxidation1 (prevented by higher humidity) and irradiation (prevented by lower humidity2). Carotenoids seem to be decomposing at different rates in different sets of conditions and on different matrices. During the preparation phase of BioSigN (BioSignatures and habitable Niches) we explore the possibility that different matrices enhance or diminish preservation of detectable carotenoid signal under different storage conditions. Both pure molecular β-carotene and cyanobacterium Nostoc sp. (strain CCCryo 231-06) were used.

Item URL in elib:https://elib.dlr.de/144262/
Document Type:Conference or Workshop Item (Poster)
Title:Preservation of carotenoids in salts and Mars regolith in various conditions
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Horky, Dominikdominik.horky (at) dlr.deUNSPECIFIED
Leya, Thomasfraunhofer izi-bb, potsdam, germanyUNSPECIFIED
de Vera, Jean Pierre Pauljean-pierre.devera (at) dlr.deUNSPECIFIED
Baqué, MickaelMickael.Baque (at) dlr.dehttps://orcid.org/0000-0002-6696-6030
Date:25 September 2021
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:BioSigN, Raman spectroscopy, Perseverance, carotenoids
Event Title:DABG Workshop
Event Location:Essen
Event Type:Workshop
Event Dates:27.-29. September 2021
Organizer:Deutsche Astrobiologische Gesellschaft
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Space Exploration
DLR - Research theme (Project):R - BioSigN (BioSignatures and habitabile Niches)
Location: Berlin-Adlershof , Köln-Porz
Institutes and Institutions:Institute of Planetary Research > Planetary Laboratories
Space Operations and Astronaut Training > User center for space experiments (MUSC)
Deposited By: Herrmann, Astrid
Deposited On:05 Oct 2021 07:38
Last Modified:05 Oct 2021 07:38

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