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Slow-digestion resistant dextrin and preparation method thereof

A resistant dextrin, slow technology, applied in the field of preparation of slowly digested resistant dextrin, can solve the problem of uncontrollable glycosidic bond ratio

Active Publication Date: 2022-04-01
SHANDONG BAILONG CHUANGYUAN BIO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional method of preparing resistant dextrin is a random transformation mechanism. The proportion of glycosidic bonds in the resistant dextrin product cannot be controlled, and the α-1,4 glycosidic bonds in the obtained resistant dextrin only account for about 50%. Digestion provides only about 15% of energy

Method used

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  • Slow-digestion resistant dextrin and preparation method thereof

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preparation example Construction

[0023] The invention provides a method for preparing slow digestion resistant dextrin, comprising the following steps:

[0024] 1) mixing starch and water to obtain starch milk;

[0025] 2) Mixing the starch milk obtained in the step 1) with α-medium temperature amylase, reacting for 30-45 minutes, then adding pullulanase and maltotriose generating enzyme at the same time, performing synergistic enzymolysis to obtain an enzymolysis solution;

[0026] 3) The enzymatic hydrolyzate obtained in step 2) is sequentially subjected to evaporation, concentration and polymerization to obtain a crude product of slowly digestible resistant dextrin;

[0027] 4) Purifying the crude slow digestion resistant dextrin obtained in step 3) to obtain slow digestion resistant dextrin.

[0028] The invention mixes starch and water to obtain starch milk.

[0029] In the present invention, the starch is preferably corn starch, tapioca starch, wheat starch or pea starch, more preferably corn starch; ...

Embodiment 1

[0052] A preparation method for slowly digesting resistant dextrin, comprising the following steps:

[0053] 1) Mix cornstarch and reverse osmosis water, and adjust the Baume degree of starch milk to 17°Bé;

[0054] 2) First mix the starch milk obtained in step 1) with 1.2×10 8 Mix Uα-medium temperature amylase, after 30 minutes of reaction, add 1.25×10 7 U pullulanase and 5.25 x 10 6 U maltotriose generating enzyme, pH 5.0, 52°C, and then enzymatically hydrolyzed for 120 minutes to obtain an enzymatic hydrolyzate with a maltotriose content of 71%;

[0055] 3) Evaporate and concentrate the enzymolysis solution obtained in step 2) in the reaction kettle, the pressure is -0.075MPa, the temperature is 90°C, and the mass percentage content of the solid is evaporated to 82%; add according to 0.5% of the mass of the obtained concentrated solution Citric acid, keep vacuum -0.09MPa, temperature 140°C, react for 40min.

[0056] 4) Dissolve the slowly digested resistant dextrin crud...

Embodiment 2

[0059] A preparation method for slowly digesting resistant dextrin, comprising the following steps:

[0060] 1) Mix corn starch and reverse osmosis water, and adjust the Baume degree of starch milk to 16°Bé;

[0061] 2) First mix the starch milk obtained in step 1) with 2.4×10 8 Mix Uα-medium temperature amylase, react for 45min, then add 2×10 7 U pullulanase and 4.5 x 10 6 U maltotriose generating enzyme, pH 5.3, 54°C, and then enzymatically hydrolyzed for 180 minutes to obtain an enzymatic hydrolyzate with a maltotriose content of 72%;

[0062] 3) Evaporate and concentrate the enzymolysis solution obtained in step 2) in the reaction kettle, the pressure is -0.06MPa, the temperature is 95°C, and the mass percentage content of the solid is evaporated to 83%; according to 1.25% of the mass of the obtained concentrated solution, add Phosphoric acid, keep vacuum -0.06MPa, temperature 148°C, react for 32min.

[0063] 4) Dissolve the slowly digested resistant dextrin crude prod...

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Abstract

The invention provides a preparation method of slowly-digestible resistant dextrin, and belongs to the technical field of starch deep processing. Alpha-medium temperature amylase is cooperated with pullulanase and maltotriose generating enzyme for enzymolysis, evaporation concentration, polymerization and refining purification, and finally the resistant dextrin capable of being slowly digested is obtained. According to the method, the proportion of alpha-1, 4 glucosidic bonds in the product is increased to 70% or above by controlling the amylase enzymolysis product, so that the resistant dextrin which is originally difficult to digest by a human body can be slowly digested by the human body, and energy is continuously supplied.

Description

technical field [0001] The invention relates to the technical field of starch deep processing, in particular to a preparation method of slow digestion resistant dextrin. Background technique [0002] Glucose is an important component of the human body and an important source of energy. A normal human body needs a lot of sugar every day to provide energy and power for the normal operation of various tissues and organs. Glucose in the blood is called blood sugar, and blood sugar must be maintained at a certain level to maintain the needs of various organs and tissues in the body. Glucose is abundant in food components. After consumption and subsequent digestion of starch or other foods that can serve as a source of glucose, glucose is released into the gastrointestinal tract where it is rapidly and efficiently absorbed by the intestinal lumen, which usually increases the concentration of glucose in the blood . Normal blood sugar can be regulated by nerves, hormones, etc., a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B30/18C12P19/14C12P19/16C12P19/00C12P19/04
Inventor 邵先豹杨腾腾刘双双张明站祝书红
Owner SHANDONG BAILONG CHUANGYUAN BIO TECH