Rheological and time domain 1H NMR relaxation studies of some polyhydroxy solutes in presence of L-glycine

Transport and NMR relaxation studies are significant in understanding the molecular interactions of polyhydroxy solutes with amino acids in aqueous solutions. Jones-Dole viscosity B-coefficients for (+)-D-mannose, D-mannitol, 6-deoxy-D-mannose, (+)-methyl alpha-D-mannopyranoside, (+)-D-glucose, (+)-maltose monohydrate, and (+)-cellobiose have been measured in (0.05, 0.15, 0.25, 0.35, and 0.50) mol.kg(-1) L-glycine((aq)) solutions by means of viscosity measurements at (288.15, 298.15, 308.15, and 318.15) K, at the pressure p = 0.1 MPa. These data were used to calculate the Jones-Dole B-coefficients, the differences Delta B = B{in L-glycine((aq)) solution} - B{in water}, the temperature dependence of B-coefficients (dB/dT), and interaction coefficients. These results are important for understanding solute-cosolute (L-glycine) interactions. Proton nuclear spin-lattice relaxation rates R-1 for polyhydroxy solutes were also measured in (0.05, 0.15, 0.25, 0.35, and 0.50) mol.kg(-1) L-glycine solutions prepared in {9:1 (w/w) H2O + D2O} at T = 300 K in order to unravel the interactions in these ternary solutions. (C) 2016 Elsevier Ltd. All rights reserved.