Modulation of volumetric properties of d(+)-glucose in aqueous 3-hydroxypropylammonium acetate solutions

Study of hydration behavior of solute is required to understand the role of water in taste mechanisms, and the effect of additive on basic taste quality of solute. In this regard, apparent molar volume, apparent specific volume, apparent molar isentropic compressibility and apparent specific isentropic compressibility of Glu in aqueous solutions of 3-hydroxypropylammonium acetate (3HPAAc) have been determined at 293.15 K to 318.15 and at atmospheric pressure from experimentally measured density, ρ and speed of sound, u data. Derived parameters such as infinite dilution partial molar volumes, V2°, partial molar isentropic compressibilities, volume of transfer, expansion coefficients, hydration numbers, and interaction coefficients were also determined to discuss various interactions occurring between solute and cosolute in aqueous solutions. The effect of cationic and anionic moiety of 3HPAAc on the basic taste behavior of Glu has also been studied on the basis of apparent specific volume and apparent specific isentropic compressibility.