ArticleBMC chemistry2026
Assessment of molecular interactions of L-ascorbic acid in presence of caffeine in aqueous medium using volumetric and FTIR methods.
Article in BMC chemistry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Thermodynamic, Transport, and Spectroscopic Characterization of Nicotinamide-Caffeine Aqueous Systems.ACS omega · 2026Article
- Viscometric and UV-Visible spectroscopic characterization of L-Ascorbic Acid and Caffeine mixtures: insights into solute-solute and solute-solvent interactions.BMC chemistry · 2026Article
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Authors and funding
4 authors.
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Abstract
Understanding the interactive behaviour of essential nutrients with ubiquitous stimulants is pivotal for predicting their fate and functionality in biological systems, pharmaceutical formulations and aqueous chemical environments. In this context, the study examines the molecular interactions landscape of L-ascorbic acid (LAA) in the presence of Caffeine (CAF) in aqueous medium, emplyoying an integrated volumetric-spectroscopic framework over the temperature range 293.15-313.15 K. Density derived thermodynamical parameters, including limiting partial molar volume ([Formula: see text]), partial molar expansibility ([Formula: see text]), Helper's constants [Formula: see text], transfer volumes and ion-pair volumetric interaction coefficients, were systematically evaluated to elucidate the nature, strength and temperature dependence of solute-solute and solute-solvent interactions. The consistently positive [Formula: see text] and [Formula: see text] values, together with Hepler's criterion, enhanced solvent organization through strong hydrogen bonding and hydrophilic-hydrophobic interactions. Negative transfer volume and ion-pair volumetric interaction coefficient, however, indicate restricted binary association but dominate triplet interactions at higher concentrations, emphasizing cooperative solvation effects. These thermodynamic interpretative results are strongly reinforced by FTIR spectroscopic evidence, wherein characteristic shifts in [Formula: see text] and [Formula: see text] vibrational bands confirm specific hydrogen-bond-mediated interactions of both solutes with the aqueous matrix. Collectively, this study delivers a unified thermodynamic and spectroscopic narrative of nutrient-stimulant coexistence, offering molecular implications relevant to the rational design of functional beverages, nutraceutical formulations and predictive models of nutrient-drug interactions in complex aqueous systems.
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