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US 2020/0206259 A1Published application
Polymer glucan having low digestion rate
AssigneeEzaki Glico Co., Ltd.
InventorsHiroshi Watanabe, Yoshinobu Terada
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Abstract
One purpose of the present invention is to provide a high molecular weight glucan having both properties low digestion rate and high digestibility. A high molecular weight glucan that has property digested slowly and contains almost no indigestible ingredients is produced by enzymatic reactions of (1) a specific concentration of branching enzyme and (2) 4-α-glucanotransferase and/or an exo-type amylase to a branched glucan used as a substrate.
Claims14
A high molecular weight glucan having a structure in which a branched chain of α-1,6-glucoside bonds is linked to a main chain of α-1,4-glucoside bonds,
- the high molecular weight glucan having an average molecular weight of 10,000 to 500,000,
- wherein the following properties (i) to (iii) are fulfilled by HPAEC-PAD analysis of unit chain length distributions obtained after the α-1,6-glucoside bonds are hydrolyzed by isoamylase to a linear unit chain length,
- (i) the ratio of the total value of the peak areas for degrees of polymerization of 1 to 5 to the total value of the peak areas for degrees of polymerization of 6 to 10 is 33% to 50%,
- (ii) the ratio of the total value of the peak areas for degrees of polymerization of 11 to 15 to the total value of the peak areas for degrees of polymerization of 6 to 10 is 80% to 125%, and
- (iii) the ratio of the total value of the peak areas for degrees of polymerization of 26 to 30 to the total value of the peak areas for degrees of polymerization of 6 to 10 is 16% to 43%.
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Dependencies are inferred from the claim text.