Gamma Irradiation of Aqueos Solution of L-Aspartic Acid, L-Aspartic Acid in Solid State, and L-Aspartic Acid Adsorbed into Na-Montmorillonite: Its Relevance in Chemistry Prebiotic
| Autor: | Alejandro Heredia, M. F. García-Hurtado, A. L. Meléndez-López, J. Cruz-Castañeda, Sergio Ramos-Bernal, A. Negrón-Mendoza |
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| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_classification
Reaction mechanism Aqueous solution endocrine system diseases Chemistry Deamination nutritional and metabolic diseases 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Decomposition Amino acid chemistry.chemical_compound Succinic acid 0103 physical sciences Radiolysis Aspartic acid Organic chemistry 0210 nano-technology 010303 astronomy & astrophysics hormones hormone substitutes and hormone antagonists |
| Zdroj: | Journal of Nuclear Physics, Material Sciences, Radiation and Applications. 8:105-108 |
| ISSN: | 2321-9289 2321-8649 |
| DOI: | 10.15415/jnp.2021.82012 |
| Popis: | Aspartic acid is an amino acid present in the modern proteins, however, is considered a primitive amino acid hence its importance in prebiotic chemistry experiments studies. In some works of prebiotic chemistry have been studied the synthesis and the stability of organic matter under high energy sources, and the role of clays has been highlighted due to clays that can affect the reaction mechanisms in the radiolytic processes. The present work is focused on the study of the role of Namontmorillonite in the gamma radiolysis processes of L-aspartic acid. Gamma radiolysis processes were carried out in three different systems a) L-aspartic acid in aqueous solution; b) L-aspartic acid in solid-state; and c) L-aspartic acid adsorbed into Na-montmorillonite. L-aspartic acid was analyzed by high-performance liquid chromatography−electrospray ionization−mass spectrometry (HPLCESI-MS). The results showed that the decomposition of L-aspartic acid considerably decreased in the presence of clay thus highlighting the protector role of clays and favors the stability of organic matter even under the possible high energy conditions of primitive environments. The principal product ofgamma radiolysis of L-aspartic acid was succinic acid produced by deamination reaction. On the other hand, when aspartic acid was irradiated in solid-state the main product was the L-aspartic acid dimer. Both radiolysis products are important for chemical evolution processes for L-aspartic acid in primitive environments. |
| Databáze: | OpenAIRE |
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