THERMODYNAMIC STUDY OF IONIC STRENGTH EFFECT ON SOLUBILITY OF L-VALINE IN AQUEOUS SOLUTIONS

The study of ion specific effects on the aqueous solubility of amino acids and proteins is crucial for the development of many areas of biochemistry and biotechnology. In this work, the effect of ions of inorganic salts (KCl and KNO3) on the aqueous solubility of l-valine was studied by performing experimental solubility measurements. It was made the experimental data on the solubilities at different temperatures of L-valine in aqueous electrolyte solutions with a different concentration of KCl. The solubility of L-valine decreases with an increase in the KCl and KNO3 concentration (salting-out). These results can contribute to a better understanding of the thermodynamic behaviour of L-valine in aqueous solution.