[BAO01-P03] Effect of Minerals on Amino Acids Formation in Environments Simulating Parent Bodies of Meteorites
Keywords:Meteorite, Formaldehyde, Minerals, Amino acids
In our present research, we are studying possible role that minerals such as montmorillonite clay and olivine could have played in the processes for the amino acid productions in water-bearing planetesimals.
First we synthesized organic compounds using a mixture of water, formaldehyde and ammonia (H2O, H2CO, NH3) in a ratio of 100:5:5 and 100:7:1 by simulating primordial materials in comets and asteroids, in order to compare between two ratios. Adding some minerals (10 g/L) to these solutions to study their effects on the formation of amino acids. Aqueous solutions were heated in oven under various temperatures (100 - 150°C). The resulting products were then acid hydrolyzed (6M HCl, 110°C, 24h), desalted, and subjected to amino acid analysis by high performance liquid chromatography (HPLC).
After acid hydrolysis, amino acids including glycine, alanine and beta-alanine were detected, while a little or no amino acids were detected without acid hydrolysis. Our preliminary results showed that the yields of amino acids were enhanced with the presence of minerals. These results suggested that the associated minerals were act as catalysts to produce amino acid precursors during aqueous activities in the planetesimals.
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