Method for producing dietary fiber

Patent metadata

Field	Value
Publication number	US-11326194-B2
Application number	US-202017091763-A
Country	US
Kind code	B2
Filing date	Nov 6, 2020
Priority date	Dec 20, 2019
Publication date	May 10, 2022
Grant date	May 10, 2022

Abstract

The present invention provides a method for producing dietary fiber that has a mild sweet taste by reducing sugars and provides by-products having high added values, and dietary fiber produced by the method. The dietary fiber may be produced by including: liquefying roasted dextrin; and adding enzymes including α-amylase, β-amylase, and maltogenic amylase to the liquefied roasted dextrin, and saccharifying the same.

First claim

What is claimed is:

1. A method for producing dietary fiber comprising:
(a) liquefying roasted dextrin;
(b) adding enzymes including α-amylase, β-amylase, and maltogenic amylase to the liquefied roasted dextrin, and saccharifying the same to produce a sugar solution;
(c) filtering the sugar solution obtained in the step (b);
(d) decolorizing the filtered filtrate by treatment with activated carbon;
(e) purifying the decolored filtrate by passing it through an ion exchange resin; and
(f) concentrating the filtrate after the purifying, followed by performing column chromatography filled with a strongly acidic cation exchange resin to obtain a dietary fiber sugar solution,
wherein the α-amylase is added in an amount of 0.01 to 0.1% (w/w), the β-amylase is added in an amount of 0.01 to 0.1% (w/w), and the maltogenic amylase is added in an amount of 0.01 to 0.5% (w/w), based on a total amount of the liquefied roasted dextrin; and
wherein the enzymes are simultaneously added.

2. The method for producing dietary fiber according to claim 1 , wherein the enzyme further includes pullulanase.

3. The method for producing dietary fiber according to claim 2 , wherein the pullulanase is added in an amount of 0.01 to 0.1% (w/w), based on the total amount of the liquefied roasted dextrin.

4. The method for producing dietary fiber according to claim 1 , wherein the liquefaction is performed by adjusting the roasted dextrin to pH 5.0 to 6.0, and then maintaining the same at a temperature of 100 to 110° C. for 5 to 15 minutes.

5. The method for producing dietary fiber according to claim 1 , wherein the saccharification is performed by adding the enzymes under conditions of pH 5.0 to 6.0 and a temperature of 55 to 65° C. for 48 to 72 hours.

6. The method for producing dietary fiber according to claim 1 , wherein a content of water-soluble dietary fiber in the dietary fiber sugar solution is 69% (w/w) or more.

Assignees

• Daesang Corp

Inventors

• Cho Kyoung Hee
• Kim Ki Chan
• Park Kyoung Ok
• Kim Hak Jun

Classifications

• C13K1/08

  Purifying · CPC title

• A23L33/21

  Addition of substantially indigestible substances, e.g. dietary fibres · CPC title

• C12P19/14 Primary

  produced by the action of a carbohydrase {(EC 3.2.x)}, e.g. by alpha-amylase {, e.g. by cellulase, hemicellulase} · CPC title

• C12P19/22

  produced by the action of a beta-amylase, e.g. maltose · CPC title

• A23V2002/00

  Food compositions, function of food ingredients or processes for food or foodstuffs · CPC title