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Appl Environ Microbiol. 1970 October; 20(4): 567-572
Copyright © 1970 American Society for Microbiology. All Rights Reserved.

Whole Microorganisms Studied by Pyrolysis-Gas Chromatography-Mass Spectrometry: Significance for Extraterrestrial Life Detection Experiments 1

Peter G. Simmonds

Space Sciences Division, Jet Propulsion Laboratory, Pasadena, California 91103

ABSTRACT

Pyrolysis-gas chromatography-mass spectrometric studies of two microorganisms, Micrococcus luteus and Bacillus subtilis var. niger, indicate that the majority of thermal fragments originate from the principal classes of bio-organic matter found in living systems such as protein and carbohydrate. Furthermore, there is a close qualitative similarity between the type of pyrolysis products found in microorganisms and the pyrolysates of other biological materials. Conversely, there is very little correlation between microbial pyrolysates and comparable pyrolysis studies of meteoritic and fossil organic matter. These observations will aid in the interpretation of a soil organic analysis experiment to be performed on the surface of Mars in 1975. The science payload of this landed mission will include a combined pyrolysis-gas chromatography-mass spectrometry instrument as well as several "direct biology experiments" which are designed to search for extraterrestrial life.

FOOTNOTES

1 This paper presents the results of one phase of research carried out at the Jet Propulsion Laboratory, California Institute of Technology, under contract NAS 7-100, sponsored by the National Aeronautics and Space Administration.

Appl Environ Microbiol. 1970 October; 20(4): 567-572
Copyright © 1970 American Society for Microbiology. All Rights Reserved.





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Copyright © 1970 by the American Society for Microbiology. All rights reserved.