Abstract
AbstractDifferent analytical tools are used for the characterization of cyclic β-glucans. Proton, carbon and proton–proton interactions in cyclic β-glucans are identified by Nuclear Magnetic Resonance spectroscopy (NMR). Functional groups are identified by Fourier Transform Infrared spectroscopy (FTIR). Degree of polymerization is determined with High-Performance Liquid Chromatography (HPLC) after the hydrolysis and acetolysis of glucan. The glycosidic linkage in the glucan is identified by Gas Chromatography-Mass Spectrometry (GC-MS). Molecular weight of the glucan is determined by Matrix-Assisted Laser Desorption Mass Spectrometry (MALDI-TOF-MS), Fast-Atom Bombardment Mass Spectrometry (FAB-MS), and High-Resolution Electro Spray Ionization Mass Spectrometry (HRESI-MS). Atomic Force Spectroscopy (AFM) is used for the identification of the supramolecular structure of the glucan. The percentage of carbon, hydrogen, and nitrogen in the glucan is determined by CHN analysis.KeywordsGC-MSNMRMALDI-TOFHPLCFT-IR
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