Synthesis of Novel Oligosaccharides from Leucrose by an α-Glucosidase
1995
An α-glucosidase was purified in an electrophoretically pure state from an extract of koji culture of Aspergillus sp. KT-11. This enzyme was found to have a transferring activity when the reaction was done in a high concentration of leucrose at pH 4.5. Two kinds of transfer products, fractions I and II, were obtained from leucrose by the enzyme and they were identified as [(α-D-glucopyranosyl-(1 →6)-α-D-glucopyranosyl-(1 →6)- α -D-glucopyranosyl-(1→5)-D-fructopyranose] and [α-D-glucopyranosyl-(1 →6)-α-D-glucopyranosyl-(1→5)-D- fructopyranose], respectively. These are considered to be novel oligosaccharides
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