A New Trisaccharide, 3G-α-D-Glucosyl-sucrose, Synthesized by the Transglucosidase Action of Immobilized Buckwheat α-Glucosidase

Abstract

Enzymatic synthesis of α-glucosyl-sucrose through the transglucosidase action of immobilized buckwheat α-glucosidase was attempted in a reaction system containing maltose and sucrose. Three kinds of nonreducing trisaccharides were produced, and a large portion of the trisaccharide was 4G-α-D-glucosyl-sucrose (erlose). Another was a new trisaccharide, o-α-D-glucopyranosyl-(l->-3)-0-a-D-glucopyranosyl-(l-^2)-0-^-D-fructofuranoside (3G-α-D-glucosyl-sucrose; [α]D+120°, in water), and the other was 6G-α-D-glucosyl-sucrose (theanderose; [α]D+107°, in water). The new trisaccharide was named “esculose.”. © 1984, Japan Society for Bioscience, Biotechnology, and Agrochemistry. All rights reserved.