Interaction between calcium chloride and some carbohydrates as seen by mutual diffusion at 25 °C and 37 °C

Ternary mutual diffusion coefficients measured by Taylor dispersion method (D11, D22, D12 and D21) are reported for aqueous solutions of calcium chloride (CaCl2) and some carbohydrates (glucose, fructose and sucrose) at 25 °C and 37 °C at carrier concentrations from 0.000 to 0.100 M, for each solute, respectively.These diffusion coefficients have been measured to gain a better understanding of the structure of these systems and thermodynamic behaviour of CaCl2 and carbohydrates in solution. For example, from these data it will be possible to estimate some parameters, such as the number of moles of each component transported per mole of the other component driven by its own concentration gradient. Significant effects on these data were observed in the presence of these carbohydrates (especially with sucrose), suggesting interactions between them and calcium chloride. These studies have been complemented by molecular mechanics calculations.