NDLI: Molecular interactions of α-amino acids insight into aqueous β-cyclodextrin systems

Content Provider	Springer Nature Link
Author	Ekka, Deepak Roy, Mahendra Nath
Copyright Year	2013
Abstract	Qualitative and quantitative analysis of molecular interaction prevailing in glycine, l-alanine, l-valine and aqueous solution of β-cyclodextrin (β-CD) have been probed by thermophysical properties. Density (ρ), viscosity (η), and ultrasonic speed (u) measurements have been reported at different temperatures. The extent of interaction (solute–solvent interaction) is expressed in terms of the limiting apparent molar volume ( $$ \phi_{\text{V}}^{0} $$ ), viscosity B-coefficient and limiting apparent molar adiabatic compressibility ( $$ \phi_{\text{K}}^{0} $$ ). The changes on the enthalpy ( $$ Δ H^{} $$ ) and entropy ( $$ Δ S^{} $$ ) of the encapsulation analysis give information about the driving forces governing the inclusion. The temperature dependence behaviour of partial molar quantities and group contributions to partial molar volumes has been determined for the amino acids. The trends in transfer volumes, $$ Δ \phi_{\text{V}}^{0} $$ , have been interpreted in terms of solute–cosolute interactions based on a cosphere overlap model. The role of the solvent (aqueous solution of β-CD) and the contribution of solute–solute and solute–solvent interactions to the solution complexes have also been analyzed through the derived properties.
Starting Page	755
Ending Page	777
Page Count	23
File Format	PDF
ISSN	09394451
Journal	Amino Acids
Volume Number	45
Issue Number	4
e-ISSN	14382199
Language	English
Publisher	Springer Vienna
Publisher Date	2013-06-13
Publisher Place	Vienna
Access Restriction	Subscribed
Subject Keyword	Molecular interaction Amino acids β-Cyclodextrin Hydration number Thermophysical properties Biochemistry Analytical Chemistry Biochemical Engineering Life Sciences Proteomics Neurobiology
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Biochemistry Clinical Biochemistry

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