Surface characterization of okra hydrocolloid extract by inverse gas chromatography (IGC)

作者: Maria Dimopoulou , Christos Ritzoulis , Costas Panayiotou

DOI: 10.1016/J.COLSURFA.2014.09.042

关键词: Matrix (chemical analysis)Fourier transform infrared spectroscopyVolume (thermodynamics)Analytical chemistryAdsorptionSurface energyInverse gas chromatographyChemistryChromatographySize-exclusion chromatographyEnthalpy

摘要: Abstract An extensive surface characterization of okra hydrocolloid extract was conducted by means inverse gas chromatography (IGC) at infinite dilution in three temperatures (40, 50, 60 °C). The specific retention volume 14 solvents, used as probes, utilized for the assessment energy, free energy adsorption, well relevant enthalpy and entropic component. contribution to decreases with increasing temperature. Furthermore, demonstrated that matrix is Lewis amphoteric predominantly basic character, confirmed acidity basicity constants KA KB, respectively. above were discussed conjunction X-ray diffractometry (XRD), size exclusion (SEC–MALLS/UV), Fourier transform infra-red spectroscopy (FTIR) data.

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