Physicochemical and Transmission Electron Micrograph (TEM) Studies of Few Carbohydrate Molecules with Aqueous and Aqueous Geraniol Oil Mixtures

Abstract

Densities (ρ/10³ kg m⁻³), viscosities (η/0.1 N s m⁻²) and surface tension (γ/mN m⁻¹) of aqueous 0.005 to 0.02 mol L⁻¹ mannitol, glucose and fructose at an interval of 0.005 mol L⁻¹ and the 0.02, 0.025, and 0.03 v% aqueous geraniol oil were studied. The similar carbohydrates were also studied with 0.025 v% aqueous geraniol. TEM were recorded for sizes of molecules for analysis of probable energy consumption in flow through a capillary of Survismeter, like blood capillaries. The ρ values were used for viscosities (η) and surface tensions (γ). The η were fitted with extended Jones-Dole equation for B/L mol⁻¹ and D/(L mol⁻¹)² coefficients to explain carbohydrate-geraniol interactions. The B and γ values illustrate structural behavior of carbohydrates irrespective of the compositions. These data analyze hydrophilic and hydrophobic interactions of geraniol and carbohydrates where electron micrographs depict shortening of sizes and intermolecular distances with geraniol. The size with and without geraniol remained from 0.019–0.035 nm and 0.016–0.038 nm, respectively. The geraniol increased the densities and decreased the surface tension to almost one half of the binary systems with an effective intermixing.

Keywords:

• Biosurfactants
• carbohydrates
• geraniol
• interactions
• survismeter
• TEM

The authors are thankful to Dr. Bhoon, SVC, DU, for availing the gerniol oil and Dr. A. P. Raste, Principal, Deshbandhu College, for infrastructural support for the research work.