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A kind of 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: 2022-08-09
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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  • A kind of slow digestion resistant dextrin and preparation method thereof

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preparation example Construction

[0023] The invention provides a preparation method of slowly digesting resistant dextrin, comprising the following steps:

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

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

[0026] 3) carrying out the enzymatic hydrolysis solution obtained in the step 2) successively by evaporation concentration and polymerization to obtain a slowly digestible resistant dextrin crude product;

[0027] 4) Refining the slowly digestible resistant dextrin crude product obtained in the step 3) to obtain the slowly digestible resistant dextrin.

[0028] In the present invention, starch and water are mixed to obtain starch milk.

[0029] In the present invention, the starch is preferably corn starch, t...

Embodiment 1

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

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

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

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

[0056] 4) Dissolving the slowly digested resistant dextr...

Embodiment 2

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

[0060] 1) mixing cornstarch and reverse osmosis water, adjusting the Baume degree of starch milk to be 16°Bé;

[0061] 2) First mix the starch milk obtained in step 1) with 2.4×10 8 Uα-medium temperature amylase was mixed, reacted for 45min, and then added 2×10 7 U pullulanase and 4.5 x 10 6 U maltotriose generating enzyme, pH 5.3, 54 ℃, enzymatic hydrolysis for 180 min, to obtain an enzymatic hydrolysis solution with a maltotriose content of 72%;

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

[0063] 4) Dissolving the slowly digested resistant dex...

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Abstract

The invention provides a preparation method of slowly digesting resistant dextrin, belonging to the technical field of starch deep processing. The present invention finally obtains slowly digestible resistant dextrin by using α-mesophilic amylase in conjunction with pullulanase and maltotriose generating enzyme to carry out enzymatic hydrolysis, evaporation concentration, polymerization and purification. By controlling the starch enzymatic hydrolysis product, the invention increases the ratio of α-1,4 glycosidic bonds in the product to more than 70%, so that the resistant dextrin, which is originally difficult to be digested by the human body, can be slowly digested by the human body to continuously supply energy.

Description

technical field [0001] The invention relates to the technical field of starch deep processing, in particular to a preparation method of slowly digestible resistant dextrin. Background technique [0002] Glucose is an important component of the human body and an important source of energy. The normal human body needs a lot of sugar every day to provide energy and power for the normal operation of various tissues and organs. The 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, and 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 blood glucose concentrations . Normal blood sugar can be regulated by nerves, hormones, etc., ...

Claims

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Application Information

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Patent Type & Authority Patents(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