Influence of amino acids on gallstone crystallization under conditions close to the human body

Crystallization of calcium carbonate under conditions close to human body with addition of amino acids – asparagine and glutamic acids, serine and cysteine was carried out. It was found that by varying the concentration of amino acids and crystallization time, calcite, vaterite and aragonite phases are formed, with the vaterite phase being predominant. The changes in the shape, size and number of formed conglomerates depending on the concentration and type of amino acid were analysed. The influence of impurity concentration on the formation of calcium carbonate particles was studied by X-ray phase analysis, optical and infrared microscopy. It was found that the addition of asparagic acid in all concentrations used in the experiment leads to a sharp growth of variously shaped vaterite particles.