Apparent molar volume and ultrasonic studies on some bile salts in water–aprotic solvent mixtures

Exploration of Interactions between Pyridoxine HCl (Vitamin B6) and {Hexadecyltrimethylammonium Bromide + Sodium Cholate (Trihydroxy Bile Salt)} Mixtures at T = (298.15 to 318.15) K: Physicochemical and Spectroscopic Approach

“…Furthermore, the presence of hydrophilic/ionic groups in mixed micellar aggregates may result in strong solute–solvent interactions thereby leading to compactness. Nevertheless, the coefficient of isentropic compressibility is reliant upon the nature of counter ion binding as well as hydrophilicity of the polar groups. , In addition, partial specific volume (φ v ) and partial specific isentropic compressibility (φ K ) of mixed (HTAB + NaC) surfactants in pyridoxine HCl (aq) solution have been evaluated as follows: where ρ 0 and κ s0 are the density and isentropic compressibility of pyridoxine HCl (aq) solution, respectively. The density [ρ] and sound velocity [ u ] concentration increments have been evaluated as follows: where u 0 and [ A ] represent the respective sound velocity and concentration of pyridoxine HCl (aq) solution.…”

“…This implied that the solvent molecules surrounding the mixed micellar aggregates are least compressible than those in the bulk solutions. This might be attributed to the strong electrostrictive forces, which resulted in electrostrictive solvation. − Furthermore, in the case of molecules with both the hydrophobic and the hydrophilic moieties, their solution behavior is evaluated by a delicate balance of hydrophilic and hydrophobic interactions. Table S5 and Figure c demonstrate that positive φ V values at the lower concentration of the surfactant become negative at higher concentrations.…”

“…Nevertheless, the coefficient of isentropic compressibility is reliant upon the nature of counter ion binding as well as hydrophilicity of the polar groups. 52,53 In addition, partial specific volume (φ v ) and partial specific isentropic compressibility (φ K ) of mixed (HTAB + NaC) surfactants in pyridoxine HCl (aq) solution have been evaluated 51 as follows:…”

A review on conductometric studies of electrolytes in mixed solvent systems to understand ion-ion and ion-solvent interactions

“…G. Ravichandran et al [23] studied the equivalent conductance of bile salts in water and in solutions of water + 10% (v/v) of aprotic solvents. It was observed that equivalent conductance varies inversely with bile salt concentration.…”

Modified Potentiometric Screen-Printed Electrodes Based on Imprinting Character for Sodium Deoxycholate Determination

“…In addition, its unique structure, chemical properties, and its high affinity to form protein-NaDC complexes have a crucial impact as bio-surfactant interactions in the determination of the proteins such as serum albumin, which has an important applications in biosciences, foods, cosmetics, and drug delivery [4]. Therefore, there are different methods for the determination and monitoring of bile acids or their protein complexes such as complex NMR spectroscopy [5], steady-state fluorescence, time-resolved fluorescence and fluorescence measurements [1], and volumetric and compressibility studies for bile salts in aqueous solutions [6,7] using viscosity, density, and speed of sound techniques at different temperatures [8]. These previously reported methods of sodium deoxycholate determination as a free compound or its complexes have clear disadvantages that can be shown in the preliminary steps before the detection and monitoring, including time consumption, hard work, and complicated theories of detection.…”