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Apparent Molar Volumes of Proline-Leucine Dipeptide in NaCl Aqueous Solutions at 318.15 K

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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, Vϕ, 2, of proline-leucine were calculated from the measured data. Limiting partial molar volumes, V2∞, and limiting partial molar volumes of transfer from water to aqueous NaCl solutions, Δtr V2∞, were derived and interpreted in terms of ion-dipeptide interactions and changes in the characteristics of the hydration shell around the biomolecules as well.

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Authors and Affiliations

  1. Departamento de Química e Bioquímica, Centro de Ciências Moleculares e de Materiais, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, Ed. C8, Piso 6, 1749-016, Lisboa, Portugal

    Ângela F. S. S. Mendonça, Sara R. J. Magalhães, Sandra I. M. Rodrigues & Isabel M. S. Lampreia

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  1. Ângela F. S. S. Mendonça
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  2. Sara R. J. Magalhães
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  3. Sandra I. M. Rodrigues
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  4. Isabel M. S. Lampreia
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Correspondence to Isabel M. S. Lampreia.

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Mendonça, Â.F.S.S., Magalhães, S.R.J., Rodrigues, S.I.M. et al. Apparent Molar Volumes of Proline-Leucine Dipeptide in NaCl Aqueous Solutions at 318.15 K. J Solution Chem 34, 25–32 (2005). https://doi.org/10.1007/s10953-005-2044-5

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  • DOI: https://doi.org/10.1007/s10953-005-2044-5

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