Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/194815
Type: Artigo de periódico
Title: Water Activity, Ph And Density Of Aqueous Amino Acids Solutions.
Author: Ninni, L
Meirelles, A J
Abstract: The water activity, pH and density of some aqueous amino acid solutions were determined at 25 degrees C in three different types of solvents. Previous published experimental data on water activity and solubility of amino acids in aqueous solutions were used together with data from this work to test the applicability of a group contribution model. The activity coefficients were estimated by the UNIFAC-Larsen model combined with the Debye-Hückel equation, taking also into account the partial dissociation phenomena of species in solution. Interaction energies between the charged species Na(+) and Cl(-) and the specific groups of amino acids (COOH and NH(2)) were adjusted using experimental solubility data.
Subject: Amino Acids
Buffers
Electrolytes
Hydrogen-ion Concentration
Models, Chemical
Solubility
Solutions
Thermodynamics
Water
Rights: fechado
Identifier DOI: 10.1021/bp0100427
Address: http://www.ncbi.nlm.nih.gov/pubmed/11485432
Date Issue: -1-Uns- -1
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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