Studies on the Interactions of l-Valine and l-Threonine with Saccharides in Aqueous Solutions at 298.15 K

Autor:	Ruisen Lin, Huaji Liu, Yu Chen, and Honglin Zhang
Rok vydání:	2007
Předmět:	Chromatography Aqueous solution Chemistry General Chemical Engineering Enthalpy Thermodynamics General Chemistry Sorbose Dilution Activity monitor chemistry.chemical_compound Virial coefficient Valine L-threonine
Zdroj:	Journal of Chemical & Engineering Data. 52:609-612
ISSN:	1520-5134 0021-9568
DOI:	10.1021/je060500t
Popis:	Mixing enthalpies of aqueous l-valine and l-threonine solutions with aqueous sorbose solution and aqueous fructose solution and their dilution enthalpies have been determined with a Thermometric-2277 thermal activity monitor at 298.15 K. The experimental data have been analyzed in terms of McMillan−Mayer formalism to obtain the enthalpic virial coefficients for heterotactic interaction. The enthalpic pairwise interaction coefficients hxy of l-valine with saccharides are positive and those of lthreonine are negative. The variations of the enthalpic pairwise interaction coefficients are interpreted in terms of solute−solute interactions.
Databáze:	OpenAIRE
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