| abstract |
PROBLEM TO BE SOLVED: To provide a glucan useful as a water-soluble dietary fiber, a method for producing the glucan, and a use thereof. An α-glucan containing glucose as a constituent sugar, in methylation analysis, (1) 2,3,6-trimethyl-1,4,5-triacetylglucitol and 2,3,4 The ratio of trimethyl-1,5,6-triacetylglucitol is in the range of 1: 0.6 to 1: 4; (2) 2,3,6-trimethyl-1,4,5-triacetyl The sum of glucitol and 2,3,4-trimethyl-1,5,6-triacetylglucitol accounts for 60% or more of the partially methylated glucitol acetate; (3) 2,4,6- Trimethyl-1,3,5-triacetylglucitol is not less than 0.5% and less than 10% of partially methylated glucitol acetate; and (4) 2,4-dimethyl-1,3,5,6 -Tetraacetylglucitol is partially methylated By providing a branched α-glucan, a novel α-glucosyltransferase that produces the branched α-glucan, a method for producing the same, and a use thereof, To solve. [Selection figure] None |