| Abstract |
Density measurements of pseudo-binary solutions of proline-leucine dipeptide in aqueous NaCl solutions with molality ranging from 0 to 1 mol-kg(-1) have been performed at 318.15 K. Apparent molar volumes, V-phi,V- 2, of proline-leucine were calculated from the measured data. Limiting partial molar volumes, V-2(infinity), and limiting partial molar volumes of transfer from water to aqueous NaCl solutions, Delta(tr) V-2(infinity), were derived and interpreted in terms of ion-dipeptide interactions and changes in the characteristics of the hydration shell around the biomolecules as well. |
