12.07.2015 Views

Boreskov

Boreskov

Boreskov

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OP‐7polymerization of simple molecules, origin of homochirality in biomolecules and so on. Theaim of our work was also to study the influence of mineral substrates on the reaction ofoligomerization of amino acids under the action of vacuum ultraviolet (VUV) radiation withwavelengths less than 200 nm, one of the main energy sources of the Sun.Simple oligopeptides can be formed on solid material not only by VUV–light but also byproton radiation, heat, and γ–radiation. Thus, it can be assumed that the chemical evolutionwould have taken place during the early stage of the Solar system origin and reached thestage of polymerization before the end of planet accretion. Polymerization is an essentialstep in prebiological evolution and we have shown that this process probably could takeplace even at early stage of the Solar system formation, on the surface of small bodies andinside them.The aim of our work is to study the influence of mineral substrates on the reaction ofoligomerization of amino acids under the action of different energy sources also. Thepresence of mineral components (montmorillonite, kaolinite, volcanic ash, olivine, piroxene,SiO 2 ) have different influence on the yields and products of the oligomerization reaction.The delivery of organic compounds by carbonaceous chondrites to the early Earth andother planetary bodies could have been an important source of prebiotic compoundsincluding simple biopolymers required for the emergence of life.41

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