NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Gamma-irradiation of malic acid in aqueous solutionsThe gamma-irradiation of malic acid in aqueous solutions was studied under initially oxygenated and oxygen-free conditions in an attempt to determine the possible interconversion of malic acid into other carboxylic acids, specifically those associated with Krebs cycle. The effect of dose on product formation of the system was investigated. Gas-liquid chromatography combined with mass spectrometry was used as the principal means of identification of the nonvolatile products. Thin layer chromatography and direct probe mass spectroscopy were also employed. The findings show that a variety of carboxylic acids are formed, with malonic and succinic acids in greatest abundance. These products have all been identified as being formed in the gamma-irradiation of acetic acid, suggesting a common intermediary. Since these molecules fit into a metabolic cycle, it is strongly suggestive that prebiotic pathways provided the basis for biological systems.
Document ID
19810033580
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Negron-Mendoza, A.
(Maryland Univ. College Park, MD, United States)
Graff, R. L.
(Maryland Univ. College Park, MD, United States)
Ponnamperuma, C.
(Maryland, University College Park, Md., United States)
Date Acquired
August 11, 2013
Publication Date
December 1, 1980
Publication Information
Publication: Origins of Life
Volume: 10
Subject Category
Chemistry And Materials (General)
Accession Number
81A17984
Funding Number(s)
CONTRACT_GRANT: NGR-21-002-317
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available