Conductometric Properties and UV–Vis Spectroscopic Study of L-Glutamic Acid in Aqueous Solutions of L-Arabinose and D-Xylose in the Temperature Range of 293.15–313.15 K at Atmospheric Pressure

• Published in: Russian Journal of Physical Chemistry A Vol. 98; no. 10; pp. 2262 - 2275
• Main Authors: Pradhan, Rupesh Kumar, Singh, Sulochana
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.10.2024; Springer Nature B.V
• Subjects: Amino acids; Aqueous solutions; Arabinose; Biomolecules; Carbohydrates; Chemistry; Chemistry and Materials Science; Electrical resistance; Glutamic acid; Hydrophilicity; Molecular interactions; Parameters; Physical Chemistry; Physical Chemistry of Solutions; Position measurement; Thermodynamics; Xylose; ion association; Walden product; molar conductance; thermodynamic quantities; change in heat capacity
• ISSN: 0036-0244; 1531-863X
• DOI: 10.1134/S0036024424701425

In this work, the electrical conductance approach is used to investigate the molecular interactions between nonessential amino acid (L-glutamic acid) and carbohydrates (L-arabinose/D-xylose) at various temperatures. Many characteristics, including limiting molar conductance ( ), Walden product ( ), activation energy ( ), and thermodynamic parameters, were obtained for the binary and ternary solutions of L-glutamic acid (Glu) from the electrical conductance ( ) measurement. The acquired thermodynamic quantities were interpreted in terms of the systems’ physicochemical interactions. The behavior of small biomolecules (amino acid) and saccharides in solute-solvent interactions is shown by the influence of numerous parameters, including concentration, temperature, and the position of axial and equatorial –OH groups of the saccharides, on these quantities. Hydrophilic-hydrophilic or ion-hydrophilic interactions predominate in the systems that are being studied is supported by the UV–Vis spectroscopy investigations’ absorption values.