“…Manoli et al have studied the kinetics of vaterite crystallization on calcite in the presence of alanine, glycine, lysine, as well as on lysine, glutamic acid, polyglycine, polytyrosine and polymethionine [10,11]. Kai et al indicated that the noncharged polar amino acids and those of the acidic ones in CaCO 3 precipitates tend to stabilize the vaterite phase, and the vaterite content in CaCO 3 precipitates is correlated to the concentration of amino acids in the precipitates [12]. Tong et al have investigated L-aspartic acid controlling the crystal phase, shape, size and aggregation of CaCO 3 [13].…”