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Preparation method of resistant dextrin

A technology of resistant dextrin and starch, which is applied in the field of deep processing of starch, can solve the problems of diverse, complex components of side reaction products, and high production costs, and achieve the effects of reducing production costs, reducing the difficulty of separation and purification, and shortening the reaction time

Inactive Publication Date: 2017-05-31
BAOLINGBAO BIOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the technology described in the above-mentioned documents still has the problem of complex and diverse components of side reaction products, and the production cost is relatively high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A preparation method of resistant dextrin, comprising the steps of:

[0041] (1) Adding 15% hydrochloric acid solution of starch dry powder quality to cornstarch, the hydrochloric acid solution mass concentration is 1%, stirs evenly, makes starch acid treatment sample;

[0042] (2) heating the starch acid-treated sample prepared in step (1) to 80° C., and performing a pre-drying pyrolysis reaction for 60 minutes to obtain a pyrolysis product;

[0043] (3) heating the pyrolysis product prepared in step (2) to 150°C, and performing a polymerization reaction for 50 minutes to obtain a crude resistant dextrin;

[0044] (4) Dissolve the resistant dextrin crude product obtained in step (3) in water, prepare a reaction solution with a mass concentration of 20%, and react with high-temperature α-amylase at 90° C. for 30 minutes, pH 5.8, and high-temperature α-amylase The amount of enzyme added is 2×10 per ton of starch dry powder 7 , and then through compound glucoamylase at ...

Embodiment 2

[0049] A preparation method of resistant dextrin, comprising the steps of:

[0050] (1) Add 8% hydrochloric acid solution of starch dry powder quality to cornstarch, the mass concentration of hydrochloric acid solution is 4%, stir evenly, make starch acid treatment sample;

[0051] (2) heating the starch acid-treated sample prepared in step (1) to 110° C., and performing a pre-drying pyrolysis reaction for 20 minutes to obtain a pyrolysis product;

[0052] (3) heating the pyrolysis product prepared in step (2) to 180°C, and performing a polymerization reaction for 10 minutes to obtain a crude resistant dextrin;

[0053] (4) Dissolve the crude resistant dextrin prepared in step (3) in water, prepare a reaction solution with a mass concentration of 20%, and react with high-temperature α-amylase at 100° C. for 50 minutes, pH 6.0, and high-temperature α-amylase The amount added is 2×10 per ton of starch dry powder 7 , and then undergo enzymatic hydrolysis reaction at 60°C for 40...

Embodiment 3

[0058] A preparation method of resistant dextrin, comprising the steps of:

[0059] (1) Add 10% hydrochloric acid solution of starch dry powder quality to cornstarch, the hydrochloric acid solution mass concentration is 2%, stir evenly, make starch acid treatment sample;

[0060] (2) heating the starch acid-treated sample prepared in step (1) to 100° C., and performing a pre-drying pyrolysis reaction for 25 minutes to obtain a pyrolysis product;

[0061] (3) Heating the pyrolysis product prepared in step (2) to 160°C, and performing a polymerization reaction for 40 minutes to obtain a crude resistant dextrin;

[0062] (4) Dissolve the crude resistant dextrin prepared in step (3) in water, prepare a reaction solution with a mass concentration of 20%, and react with high-temperature α-amylase at 95° C. for 40 minutes, pH 5.9, and high-temperature α-amylase The amount added is 2×10 per ton of starch dry powder 7 , and then undergo enzymatic hydrolysis reaction at 58°C for 38h w...

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Abstract

The invention relates to a preparation method of resistant dextrin. The method comprises the following steps: (1) adding starch dry powder into an acid solution, and stirring uniformly to obtain a starch acid treatment sample; (2) carrying out predrying pyrolysis reaction on the starch acid treatment sample to obtain a pyrolysis product; (3) carrying out polymerization reaction on the pyrolysis product to obtain the resistant dextrin crude product; (4) dissolving the resistant dextrin crude product in water, carrying out high-temperature alpha-amylase and composite saccharifying enzyme enzymolysis, and carrying out decolorization, ion exchange, concentration, chromatographic separation, secondary ion exchange, secondary concentration and drying to obtain the resistant dextrin. The starch dry powder is subjected to two dextrinization reaction stages and enzymolysis reaction to obtain the resistant dextrin with different dietary fiber contents by controlling the reaction conditions, thereby lowering the subsequent separation purification difficulty, lowering the production cost, optimizing the components of the resistant dextrin, and enhancing the product quality.

Description

technical field [0001] The invention relates to a preparation method of resistant dextrin, which belongs to the technical field of starch deep processing. Background technique [0002] Dietary fiber is to maintain human health. The "seventh nutrient" that cannot be replaced by other substances. Now many developed countries have realized that the physiological role of dietary fiber is an irreplaceable function for the body, and have developed foods with multiple functions of dietary fiber, which have occupied most of the food market. [0003] Resistant dextrin is processed from starch and belongs to water-soluble dietary fiber. Resistant dextrin has good thermal stability, low calorie value and low glycemic index, and contains glucoside structures linked by α-1,2 and α-1,3 bonds, and contains β-1, 6 structures. Therefore, it is not easy to be decomposed in the body, and can directly enter the large intestine to play its physiological role as dietary fiber. [0004] Chine...

Claims

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Application Information

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IPC IPC(8): C12P19/20C12P19/16C12P19/14C12P19/04C08B30/18
CPCC08B30/18C12P19/04C12P19/14C12P19/16C12P19/20
Inventor 刘宗利刘峰李克文栾庆民柏帅张倩
Owner BAOLINGBAO BIOLOGY
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