Study of solute-solute and solute-solvent interactions of streptomycin sulphate in aqueous- l -asparagine/ l -glutamine solutions at different temperatures by using physicochemical methods

Exploring the Subsistence of Solvation Consequences of l-Asparagine and l-Glutamine Prevailing in Aqueous Ionic Liquid Solutions by Physicochemical and Computational Investigations

“…The limiting apparent molar expansibilities ( E φ 0 ) values were found positive for all of the molality of aqueous IL solutions and all five studied temperatures and at atmospheric pressure 0.1 MPa. Similar type of results of E φ 0 were found in the case of physicochemical studies of streptomycin sulfate in aqueous- l -Asn/ l -Gln solutions . It has been found in Tables S11 and S13 that the values of E φ 0 increase with the increase in concentration and maximum value obtained at 0.005 molality of IL and similarly the E φ 0 values decrease with the increase in temperature and minimum value obtained at 313.15 K, which indicates the interaction present in solute and solvent is maximum at 0.005 molality and at 313.15 K, respectively.…”

Insight into Interactions of l-Arginine/l-Histidine with Drug Betaine Hydrochloride in Aqueous Medium at Different Temperatures by using Physicochemical Methods

“…As part of a comprehensive study of physicochemical properties of drugs, present study embrace measurement of the volumetric, acoustic and viscometric properties of l-arginine and l-histidine in aqueous and aqueous-betaine hydrochloride. In earlier contributions [9][10][11][12][13], we studied the properties of mixture of amino acids and drug solutions. In this paper, an attempt has been made to have an admissible information on the behavior of amino acids in aqueous solutions of betaine hydrochloride by measuring densities, ρ , ultrasonic speed, u and viscosities, η of solutions of l-arginine and l-histidine in aqueous and aqueousbetaine hydrochloride (1% and 2% betaine hydrochloride in water, w/w) solvents at temperatures from 293.15 to 318.15 K and at atmospheric pressure.…”

Solvation of l-Asparagine in Some Aqueous–Organic Solutions at T = 298.15 K

“…For this reason, it is very important to investigate the dissolution and solvation processes of amino acids in various media. Such studies are carried out in water, various organic solvents, and water–organic mixed solvents. − This work is a continuation of previous thermochemical studies of the dissolution and solvation processes of various amino acids in aqueous–organic mixtures. − As the object of the thermochemical study was selected l -asparagine (I). l -aspsragine is ß-amide of aspartic acid and can be found in animal protein; it is one of the principle and abundant amino acids involved in the transport of nitrogen; and it is very active in converting one amino acid into another (amination and transamination).…”