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Method for preparing resistant dextrin by using microwaves

A technology of resistant dextrin and microwave, applied in the field of starch deep processing, can solve the problems of easy carbonization, uneven thermal reaction of starch, affecting product quality, etc., and achieves the effects of fast heating time, improved sensitivity, and good anti-digestion performance.

Inactive Publication Date: 2020-01-24
BAOLINGBAO BIOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the technology described in the above-mentioned documents still has the inhomogeneous thermal reaction o

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0034] A method for preparing resistant dextrin using microwaves, comprising the following steps:

[0035] (1) Add 15% hydrochloric acid solution of corn starch quality in corn starch, the hydrochloric acid solution mass concentration is 1%, stir well, the starch acid treatment sample that makes;

[0036] (2) add its mass 0.5% CaCl in the starch acid treatment sample that step (1) makes 2 , magnetically stirred for 20 minutes, and heated for 5 minutes under 200w microwave power to obtain the crude resistant dextrin;

[0037] (3) Dissolve the crude resistant dextrin obtained in step (2) in water to prepare a solution with a mass concentration of 20%, adjust the pH value of the solution to 6.0, react with α-high temperature resistant amylase at 100°C for 30min, and cool After cooling down to 60°C, it is enzymatically hydrolyzed by compound glucoamylase for 36 hours, then decolorized, isolated, nanofiltered, and finally spray-dried to obtain resistant dextrin.

[0038] The addi...

Embodiment 2

[0042] A method for preparing resistant dextrin using microwaves, comprising the following steps:

[0043] (1) Add cornstarch quality 8% hydrochloric acid solution to cornstarch, the hydrochloric acid solution mass concentration is 2%, stir evenly, the starch acid treatment sample that makes;

[0044] (2) add its mass 0.5% CaCl in the starch acid treatment sample that step (1) makes 2 , magnetically stirred for 15 minutes, and heated for 10 minutes under 400w microwave power to obtain the crude resistant dextrin;

[0045] (3) Dissolve the resistant dextrin crude product obtained in step (2) in water, make a solution with a mass concentration of 30%, adjust the pH value of the solution to 6.0, react with α-high temperature resistant amylase at 100°C for 30min, and cool After cooling down to 60°C, it is enzymatically hydrolyzed by compound glucoamylase for 36 hours, then decolorized, isolated, nanofiltered, and finally spray-dried to obtain resistant dextrin.

[0046] The addi...

Embodiment 3

[0050] A method for preparing resistant dextrin using microwaves, comprising the following steps:

[0051](1) Add 10% hydrochloric acid solution of corn starch quality in corn starch, the hydrochloric acid solution mass concentration is 1.5%, stir evenly, the starch acid treatment sample that makes;

[0052] (2) add its mass 0.5% CaCl in the starch acid treatment sample that step (1) makes 2 , magnetically stirred for 15 minutes, and heated for 8 minutes under 400w microwave power to obtain the crude resistant dextrin;

[0053] (3) Dissolve the crude resistant dextrin obtained in step (2) in water, make a solution with a mass concentration of 30%, adjust the pH value of the solution to 5.9, react at 95° C. for 30 minutes with α-high temperature resistant amylase, and cool After cooling down to 58°C, it is enzymatically hydrolyzed by complex glucoamylase for 42 hours, then decolorized, separated, nanofiltered, and finally spray-dried to obtain resistant dextrin.

[0054] The ...

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Abstract

The invention relates to a method for preparing resistant dextrin by using microwaves. The method comprises the steps as follows: (1) adding an acid solution to dry starch powder, and uniformly stirring the mixture to prepare a starch acid treated sample; (2) treating the starch acid treated sample in a microwave device to prepare a resistant dextrin crude product; and (3) dissolving the resistantdextrin crude product in water, carrying out enzymolysis by alpha-high-temperature-resistant amylase and complex glucoamylase, and then, performing decolorization, centrifugation, nanofiltration andspray drying to prepare the resistant dextrin. The resistant dextrin is prepared by the microwave method, the problem that products pretreated by a traditional acid heat method are not uniformly heated is solved, and the product quality is improved. Meanwhile, a particle carbon pile decolorization method is adopted in a resistant dextrin decolorization process, and the defects that powdery activated carbon is disposable, materials remaining in waste carbon after decolorization cannot be recovered, the material loss is larger, the yield is reduced, the labor intensity is high and the like are overcome. The decolorization method can reduce energy consumption in the production process, so that the production cost is saved.

Description

technical field [0001] The invention relates to a method for preparing resistant dextrin by utilizing microwaves, and belongs to the technical field of starch deep processing. Background technique [0002] Resistant dextrin, also known as indigestible dextrin or resistant maltodextrin, is an important product of starch deep processing. It is a low-calorie dextran and belongs to low-molecular soluble dietary fiber. Dietary fiber is called necessary for human health. The seventh largest nutrient is an important auxiliary material in the modern food industry. Compared with other dietary fiber products, resistant dextrin has excellent properties such as good acidity, heat stability, high digestive tolerance, low glycemic index, low insulin index, low calorie and prevention of dental caries. [0003] The existing production process generally adopts various starches in the presence of hydrochloric acid, heats and decomposes at high temperature to become pyrodextrin, and pyrodextr...

Claims

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Application Information

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IPC IPC(8): C12P19/16C12P19/14C12P19/04
CPCC12P19/04C12P19/14C12P19/16
Inventor 李克文栾庆民黄慧娜熊小兰张莉冯涛李新华徐虹尹郑
Owner BAOLINGBAO BIOLOGY
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