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Asian Journal of Applied Sciences
Year: 2010  |  Volume: 3  |  Issue: 1  |  Page No.: 13 - 24

Viscometric Studies on the Molecular Association of Biomolecules Based on Thermodynamic Parameters Supported by UV Spectra

R. Srivastava, A.R. Saksena and Arti Gupta    

Abstract: Density and Viscosity for ternary systems (amino acid + I2 + water) containing amino acid viz; alanine, valine, leucine, isoleucine in aqueous solutions have been measured for several concentrations of amino acids as donors at different temperatures (303, 313, 323 K). Using above data internal pressure, absorbance, relative viscosity, Falkenhagen coefficient A, Jones-Doles coefficient B and thermodynamic parameters have been computed, Viscosities of the ternary mixtures have been correlated successfully using Jones-Doles and Vand’s equation. Kinetic and thermodynamic parameters have been calculated to interpret 1:1 molecular association. The UV spectra have been used to support the mechanism of association in correlation with evaluated, observed and derived parameters.

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