Viscosity B-Coefficients of L-Proline and L-Hydroxyproline and the Effect of added Methanol

Department of Chemistry, Punjabi University, Patiala.-147 002

Manuscript received 15 June 1987, accepted 27 January 1988

The viscosity B-coefficients for aqueous solutions of L-proline and L-hydroxyproline containing various concentrations of methanol have been determined at 298.15, 308.15 and 318.15 K. Viscosity B-coefficients for both the amino acids are positive and increase as the temperature is Increased, The values of B-coefficients in the mixed solvents first decrease and then increase after attaining a minimum at about :20% (w/w) methanolwater mixture.