Analysis of microbial lipids deposited on Mars Global Simulant (MGS-1) by geomatrix-assisted laser desorption/ionization-mass spectrometry

Lipids are among the organic substances that can work as biosignatures, indicating life in an environment. We present an experimental investigation concerning analysis of lipids from a microbial source deposited on the Mars Global Simulant (MGS-1) regolith by geomatrix-assisted laser desorption/ioni...

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Published in:International journal of astrobiology 2021-06, Vol.20 (3), p.234-240
Main Authors: dos Santos, Alef, Rodrigues-Filho, Edson, Homem, Manoel Gustavo Petrucelli
Format: Article
Language:English
Subjects:
Adducts
Amino acids
Chromatography
Desorption
Fatty acids
Investigations
Ionization
Lasers
Lipids
Mars
Mars soil
Mars surface
Mass spectrometry
Mass spectroscopy
Microorganisms
Minerals
Regolith
Scientific imaging
Solar system
Space missions
Yeasts
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cited_by cdi_FETCH-LOGICAL-c316t-a9987643787af94e311692a4704b6cd863ec69717e519e4cc36447745197621f3
cites cdi_FETCH-LOGICAL-c316t-a9987643787af94e311692a4704b6cd863ec69717e519e4cc36447745197621f3
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container_title International journal of astrobiology
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creator dos Santos, Alef
Rodrigues-Filho, Edson
Homem, Manoel Gustavo Petrucelli
description Lipids are among the organic substances that can work as biosignatures, indicating life in an environment. We present an experimental investigation concerning analysis of lipids from a microbial source deposited on the Mars Global Simulant (MGS-1) regolith by geomatrix-assisted laser desorption/ionization-mass spectrometry (GALDI-MS). Our results indicate that lipids from intact microbial cells of a black yeast strain can be detected in these mimetic samples of Martian soil. These lipid molecules are predominantly associated with the occurrence of adducts in the GALDI-MS spectra. The results can be helpful in the planning of future planetary missions.
doi_str_mv 10.1017/S1473550421000100
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subjects Adducts
Amino acids
Chromatography
Desorption
Fatty acids
Investigations
Ionization
Lasers
Lipids
Mars
Mars soil
Mars surface
Mass spectrometry
Mass spectroscopy
Microorganisms
Minerals
Regolith
Scientific imaging
Solar system
Space missions
Yeasts
title Analysis of microbial lipids deposited on Mars Global Simulant (MGS-1) by geomatrix-assisted laser desorption/ionization-mass spectrometry
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