Autor: Touraj Assefi, Richard B. Wells, I. Francis Cheng, Giancarlo Corti, Qingyong Lang, Daniel P. Erwin, Chien M. Wai, Bruce Barnes, Tony J. Anderson, Ronald L. Crawford, Andrzej Paszczynski, Lisa Allenbach, Mohammad Mojarradi
Rok vydání: 2002
Předmět:
Zdroj: BMC Microbiology. 2:22
ISSN: 1471-2180
DOI: 10.1186/1471-2180-2-22
Popis: Background Detecting microbial life in extraterrestrial locations is a goal of space exploration because of ecological and health concerns about possible contamination of other planets with earthly organisms, and vice versa. Previously we suggested a method for life detection based on the fact that living entities require a continual input of energy accessed through coupled oxidations and reductions (an electron transport chain). We demonstrated using earthly soils that the identification of extracted components of electron transport chains is useful for remote detection of a chemical signature of life. The instrument package developed used supercritical carbon dioxide for soil extraction, followed by chromatography or electrophoresis to separate extracted compounds, with final detection by voltammetry and tandem mass-spectrometry.
Databáze: OpenAIRE
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