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Preparation method of amorphous granular resistant starch

A technology of resistant starch and amorphous particles, applied in the field of carbohydrates, can solve the problems of complex production process and low purity of resistant starch, and achieve the effects of low energy consumption, high dry heat reaction efficiency, and good heat resistance stability.

Inactive Publication Date: 2015-12-09
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are very few resistant starch products at home and abroad. The methods used in industry to prepare resistant starch mainly include: high-temperature autoclave method, acid method, enzymatic method or compound method, etc. The purity of resistant starch produced by these methods is Low (about 70%), and the production process is complicated and other shortcomings

Method used

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  • Preparation method of amorphous granular resistant starch
  • Preparation method of amorphous granular resistant starch
  • Preparation method of amorphous granular resistant starch

Examples

Experimental program
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Effect test

Embodiment 1

[0035] A method for preparing amorphous granular resistant starch, comprising the steps of:

[0036] (1) adding water to potatoes (dry basis) to prepare 10% (w / w) starch emulsion;

[0037] (2) configuration mass concentration is the NaOH solution of 20%;

[0038] (3) Slowly add the NaOH solution prepared in step (2) that accounts for 50% of the dry weight of the starch into the starch emulsion dropwise while stirring, and stir at 30° C. under normal pressure until a transparent concentrated starch solution is obtained.

[0039] (4) Neutralize the concentrated starch solution to pH 6.5 with dilute hydrochloric acid ethanol solution with a mass concentration of 5%, then wash with ethanol solution, and dry to obtain alkali-pretreated starch;

[0040] (5) Dissolve citric acid accounting for 40% of the alkali-pretreated starch dry weight in 20mL ethanol solution to obtain a citric acid-alcoholic solution, and disperse the alkali-pretreated starch obtained in step (4) in the citric...

Embodiment 2

[0063] A method for preparing amorphous granular resistant starch, comprising the steps of:

[0064] (1) glutinous rice starch (dry basis) is mixed with 15% (w / w) starch emulsion;

[0065] (2) the configuration concentration is a NaOH solution of 30% (w / w);

[0066] (3) Slowly add an alkali solution accounting for 25% (w / w) of the starch dry basis into the starch milk dropwise while stirring, and stir at a normal pressure of 35° C. until a transparent concentrated starch solution is obtained.

[0067] (4) Neutralize the concentrated starch solution with 5% (w / w) dilute hydrochloric acid ethanol solution to pH 6.5, then wash with ethanol solution, and dry to obtain alkali-pretreated starch;

[0068] (5) dissolving citric acid accounting for 30% of the alkali pretreated starch dry weight in a small amount of ethanol solution to obtain a citric acid alcohol solution, dispersing the alkali pretreated starch obtained in step (4) in the citric acid alcohol solution, and placing it ...

Embodiment 3

[0074] A method for preparing amorphous granular resistant starch, comprising the steps of:

[0075] (1) Tapioca starch (dry basis) is mixed with 30% (w / w) starch emulsion;

[0076] (2) the configuration concentration is a NaOH solution of 40% (w / w);

[0077] (3) Slowly add an alkali solution accounting for 20% (w / w) of the starch dry basis into the starch milk dropwise while stirring, and stir at 25° C. under normal pressure until a transparent concentrated starch solution is obtained.

[0078] (4) Neutralize the concentrated starch solution with 5% (w / w) dilute hydrochloric acid ethanol solution to pH 6.5, then wash with ethanol solution, and dry to obtain alkali-pretreated starch;

[0079] (5) dissolving citric acid accounting for 35% of the alkali-pretreated starch on a dry basis in a small amount of ethanol solution to obtain a citric acid-alcoholic solution, dispersing the alkali-pretreated starch obtained in step (4) in the citric acid-alcoholic solution, and placing i...

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Abstract

The invention discloses a preparation method of amorphous granular resistant starch. Starch is used as a raw material, water is added, mixing is performed to make emulsion, an alkaline solution is dropwise added into the starch emulsion, stirring is performed to obtain a transparent concentrated starch solution, an alcohol acid solution is neutralized, and an ethanol solution is used for performing washing to obtain alkaline preprocessed starch; The alkaline preprocessed starch is dispersed in the ethanol solution dissolved with citric acid, even mixing, standing and drying are performed, the temperature is improved to be 110-150 DEG C so as to perform dry heat reaction, a NaOH solution is added to regulate a pH value to be 6.0-7.0, then ethanol is used for performing washing, and drying, smashing and screening are performed to obtain the amorphous granular citric acid modified starch. The citric acid is a harmless food additive and can serve as a food nutritive fortifier. The amorphous granular resistant starch produced by means of the preparation method has amorphous, granular and anti-peptic characteristics simultaneously. The starch is firstly preprocessed in the preparation process, so that the efficiency of citric acid and starch reaction is greatly improved, and the quickly-digested starch content of a product is greatly reduced.

Description

technical field [0001] The invention belongs to the field of carbohydrates, in particular to a method for preparing cold water-soluble amorphous granular resistant starch. Background technique [0002] Starch is the most important carbohydrate in the human diet and the main source of energy for the human body. With the improvement of people's living standards, diseases related to nutrition and metabolism such as diabetes and obesity are on the rise, which is related to people's living habits and eating patterns. By improving the diet structure, the incidence of diabetes, obesity and cardiovascular and cerebrovascular diseases can be reduced, the clinical symptoms of nutritional metabolic diseases can be alleviated and improved, and the purpose of adjuvant treatment and disease prevention can be achieved. [0003] According to the simulated digestion characteristics of starch in vitro and the bioavailability of starch, British scholar Englyst et al. divided starch into three ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/12C08L3/02
Inventor 于淑娟马菲曾峰高群玉
Owner SOUTH CHINA UNIV OF TECH
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