Heterospectral Two-Dimensional Correlation Spectroscopy of Mid-Infrared and Fourier Self-Deconvolved Near-Infrared Spectra of Sugar Solutions

Abstract

The mid- and near-infrared (mid-IR and NIR) spectra of aqueous solutions of glucose and fructose, fructose and galactose, and glucose and galactose were recorded and analyzed by heterospectral two-dimensional correlation spectroscopy (H2D-CS) to determine characteristic NIR wavelengths for each sugar. Fourier self-deconvolution (FSD) was applied to the NIR spectra prior to H2D-CS analysis to help resolve the strongly overlapping sugar absorptions. Examination of the H2D-CS data gave characteristic absorption wavelengths for glucose, fructose, and galactose. The wavelengths identified by H2D-CS were then used to develop multiple linear regression (MLR) calibrations for the quantitative analysis of mixtures of the three sugars in solution. This approach gave comparable results to MLR calibrations based on wavelengths selected by examination of the first- and second-derivative spectra of solutions of the individual sugars.

Characterization and recovery of tartaric acid from wastes of wine and grape juice industries

“…Figure 3 showed that endothermic peaks for GJW1, GJW2 and RWW were obtained at 270, 269 and 274°C, respectively. In literature, differences between DSC curves of pure tartaric acid and its salt forms were also investigated [6,7]. Results of thermal analyses revealed that salt forms of tartaric acid in waste samples were thermally more stable than the pure tartaric acid.…”

Analysis of protein glycation in human fingernail clippings with near-infrared (NIR) spectroscopy as an alternative technique for the diagnosis of diabetes mellitus

“…According to Awichi et al, the absorption features at 4300 and 4400 cm −1 are assigned to the combination band of C-H stretch, C-H bending and O-H bending of glucose. Their results suggested that the 4350 cm −1 band may belong to the α-anomer of glucose [23,24].…”

Use of Near-Infrared–Mid-Infrared Dual-Wavelength Spectrometry to Obtain Two-Dimensional Difference Spectra of Sesame Oil as Inactive Drug Ingredient

“…studied the relationship of the NIR and MIR spectra of water solutions containing glucose and fructose or fructose and galactose. 24 Genkawa et al . reported the detailed development of a dual-wavelength system and demonstrated some examples of application.…”