Structure of Glucofructan from Arrhenatherum elatius var. bulbosum Tubers

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The main reserve carbohydrate extracted with hot water from the tuberous roots of Arrhenatherum elatius var. bulbosum was purified by alcoholic fractionation and charcoal column chromatography and obtained as a single component.
This was a hexasaccharide composed of one glucose and five fructose residues. Structural analysis showed that the glucose residue is located at the end of a β-2, 1-linked D-fructofuranose chain in forming the sucrose residue.