Journal of the Brazilian Chemical Society
On-line version ISSN 1678-4790
ZAIA, Dimas A. M.; VIEIRA, Heberth J. and ZAIA, Cássia T. B. V.. Adsorption of L-amino Acids on Sea Sand. J. Braz. Chem. Soc. [online]. 2002, vol.13, n.5, pp.679-681. ISSN 1678-4790. http://dx.doi.org/10.1590/S0103-50532002000500023.
A study of adsorption of L-alanine, L-tyrosine, L-glutamic acid, and L-lysine on sea sand was carried out. Only L-lysine showed adsorption on sea sand, probably due to the presence of the positively charged R group. Our results raise some doubts as to whether sand was important for the pre-concentration of amino acids prior to peptide condensation on the Pre-Biotic Earth.
Keywords : adsorption; sand; amino acids; origin of life.