Volumetric and viscometric behaviour of amino acids in aqueous metal electrolytes solutions at 308K

Akhtar, Yasmin

doi:10.1016/j.fluid.2007.01.043

Cited by 45 publications

(20 citation statements)

References 29 publications

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“…Many of them are related to volumetric and viscometric properties [1][2][3][4][5][6][7], or activity coefficients measurements [8][9][10][11] to name some of them, but a very few were carried out on solubility [12][13][14] or water activity data [15], all almost exclusively at 298.15 K. In fact, the knowledge of properties such as activity coefficients, water activity, and solubility are very useful as a support for the efficient design and simulation of separation processes such as extraction, precipitation, or drying [10,16]. On the other hand, amino acids have been used extensively as model compounds for more complex molecules such as proteins, but a more profound understanding of the electrolyte effect on amino acid solutions is still needed to reveal the molecular interactions between salts and protein functional groups [6].…”

Section: Introductionmentioning

confidence: 99%

The effect of ammonium sulfate on the solubility of amino acids in water at (298.15 and 323.15)K

Ferreira

Macedo

Pinho

2009

The Journal of Chemical Thermodynamics

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Section: Introductionmentioning

confidence: 99%

The effect of ammonium sulfate on the solubility of amino acids in water at (298.15 and 323.15)K

Ferreira

Macedo

Pinho

2009

The Journal of Chemical Thermodynamics

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“…A number of researchers have studied the partial molal volumes and partial molal isentropic compressibilities to investigate the interactions of amino acids with simple salts such as NH 4 Cl, NaCl, KCl, Na 2 SO 4 , KSCN, MgCl 2 , CaCl 2 [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27], which act as stabilizers/destabilizers. Khoshbarchi et al [28] have studied the φ o v and φ o k values of glycine in aqueous KCl and KNO 3 solutions.…”

Section: Introductionmentioning

confidence: 99%

Effect of KCl and KNO3 on Partial Molal Volumes and Partial Molal Compressibilities of Some Amino Acids at Different Temperatures

Riyazuddeen

Khan

2008

Int J Thermophys

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Density (ρ) and ultrasonic velocity (u) values of amino acids l-alanine, l-proline, l-valine, and l-leucine in 2 M aqueous KCl and 2 M aqueous KNO 3 solutions have been measured as a function of amino acid concentration at different temperatures (298.15 K, 303.15 K, 308.15 K, 313.15 K, 318.15 K, and 323.15 K). Using the ρ and u data, partial molal volume (φ o v ) and partial molal isentropic compressibility (φ o k ) values have been computed. The increase in partial molal volume with temperature has been attributed to the volume expansion of hydrated zwitterions. The φ o v and φ o k values of l-alanine, l-proline, l-valine, and l-leucine in 2 M aqueous KCl and KNO 3 solutions have been found to be larger than the corresponding values in water. The larger partial molal volumes of l-alanine, l-proline, l-valine, and l-leucine in 2 M aqueous KCl and KNO 3 solutions have been ascribed to the formation of 'zwitterion-K + /Cl − /NO 3 − ' and 'K + /Cl − /NO 3 − -water dipole' aggregates in solutions. The formation of these entities in solutions causes the release of water associated with zwitterions to the bulk water. The larger partial molal compressibilities of l-alanine-/l-proline-/l-valine-/l-leucine-2 M aqueous KCl/KNO 3 solutions than the corresponding values in water have been attributed to the formation of 'zwitterion-ion' and 'ion-water dipole' incompressible entities in solutions.

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“…Volumetric technique has been found to be more accurate and comprehensive in understanding solute-solvent interactions. To understand the role played by the biological molecules in living organism [1][2][3][4][5][6][7]. The physicochemical studies of interaction between saccharides in aqueous and inmixed aqueous medium, play an important role in biological and industrial process.…”

Section: Introductionmentioning

confidence: 99%

Solute-Solute and Solute-Solvent Interactions Studies of Saccharides in Aqueous Sodium Butyrate Solution at 308k Temperatures

Akhtar

Yasin²

2020

Int. J. Eng. Tech. Mgmt. Res.

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Density and viscosity of D (+) galactose and D (+) lactose mono hydrates in aqueous solution of sodium butyrate solutions have been determined experimentally at 308 K. The results obtained from density and viscosity measurement have been used to calculate the, apparent molal volume фv, partial molal volume ф0v, transfer volume ∆ф0tr at infinite dilution, A and B coefficient and Sv experimental slope. The results are interpreted in terms of solute-co- solute and solute-solvent interactions in these systems. It has been observed that there exist strong solute-solvent and solute-solute interactions and complex formation between in these ternary systems. The properties of the D (+) galactose and D (+) lactose mono hydrates in aqueous solution of sodium butyrate solutions are discussed in terms of the structure making and hydrogen bonding effect.

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Volumetric and viscometric behaviour of amino acids in aqueous metal electrolytes solutions at 308K

Cited by 45 publications

References 29 publications

The effect of ammonium sulfate on the solubility of amino acids in water at (298.15 and 323.15)K

The effect of ammonium sulfate on the solubility of amino acids in water at (298.15 and 323.15)K

Effect of KCl and KNO3 on Partial Molal Volumes and Partial Molal Compressibilities of Some Amino Acids at Different Temperatures

Solute-Solute and Solute-Solvent Interactions Studies of Saccharides in Aqueous Sodium Butyrate Solution at 308k Temperatures

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