An experimental approach to production of peptide-like compounds in the early terrestrial planets

摘要: Abstract A mixture of six DL -amino acids in prebiotic proportions were immersed heavy mineral oil, warmed up to 240°C and exposed the action spark discharges on a H2O CO2 gases. Water soluble products analyzed by Fourier transformed infrared spectroscopy (FTIR) showing yields peptide-like compounds characterized amidine linkages other molecules consisting aromatic non-aromatic alcohols nitrogenous aromatics. Non-soluble scanning electron microscopy (SEM) revealed presence material comparable tholins whereas water showed an amphiphilic component. The recovered amounts FTIR spectra corresponding oil simulated experimental conditions including UVC-radiations, clearly show no difference relative initial sample indicating that decomposition rate these should be very slow at time. Therefore, we consider plausible alkane environments ⩾n-C18 occurring early terrestrial planets could offer several advantages for synthesis survival molecules, particularly towards end or after age large impacts, such as protection against oxidizing atmospheres, high temperatures generated greenhouse effects shock waves caused corona lightning. Currently, facts happening regions our solar system extrasolar allowing formation accumulation complex molecules.