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Resistant dextrin and preparation method thereof

A technology of resistant dextrin and average molecular weight, which can be used in food ingredients as water activity modifiers, food preservation, food science, etc. It can solve the problems of unsatisfactory applications and high water activity of resistant dextrin products, and achieve shelf control period effect

Inactive Publication Date: 2017-01-11
SHANDONG BAILONG CHUANGYUAN BIO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The resistant dextrin product prepared by the above preparation method has a high water activity, which cannot meet the wide application in food and health products, especially in the field of high-end food and health products

Method used

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  • Resistant dextrin and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The preparation method of resistant dextrin comprises the steps of:

[0050] (1) Add citric acid with a mass of 0.01% to cornstarch, carry out high-temperature dextrinization reaction in the reactor under 130°C and -0.09MPa pressure conditions for 20min, then add deionized water to adjust the solids to 20% for acidification solution, the acid hydrolysis temperature is 55°C, the reaction time is 10min, and the DE of the acid hydrolysis solution is 15;

[0051] Then add an enzyme preparation at 0.001% by mass percentage, the enzyme activity ratio of α-amylase and transsidase in the enzyme preparation is 1.2:1, and react for 30 minutes to obtain a reaction solution;

[0052] (2) Adjust the pH value of the reaction solution obtained in step (1) to 4.5, add activated carbon in a ratio of 0.5% by mass, keep it static at 85°C for 40min, then stir for 20min; filter through a plate and frame, filter pressure 0.25Mpa, water The flow rate is 5.0t / h; the macroporous ion exchange r...

Embodiment 2

[0055] The preparation method of resistant dextrin comprises the steps of:

[0056] (1) Add citric acid with a mass of 0.02% to cornstarch, carry out high-temperature dextrinization reaction in the reactor under the conditions of 150°C and -0.095MPa pressure for 40min, then add deionized water to adjust the solids to 35% for acidification solution, the acid hydrolysis temperature is 60°C, the reaction time is 20min, and the DE of the acid hydrolysis solution is 17;

[0057] Then add an enzyme preparation in a ratio of 0.003% by mass, the enzyme activity ratio of α-amylase and transglycosidase in the enzyme preparation is 5:1, and react for 40 minutes to obtain a reaction solution;

[0058] (2) Adjust the pH value of the reaction solution prepared in step (1) to 4.8, add activated carbon in a ratio of 0.7% by mass, keep it static at 87°C for 50min, and then stir for 25min; filter through a plate frame, filter pressure 0.30Mpa, water The flow rate is 5.5t / h; the macroporous ion...

Embodiment 3

[0061] The preparation method of resistant dextrin comprises the steps of:

[0062] (1) Add 0.03% of its mass citric acid to cornstarch, carry out high-temperature dextrinization reaction in the reactor under the condition of 160°C and -0.1MPa pressure for 50min, then add deionized water to adjust the solid to 40% for acidification The temperature of acid hydrolysis is 65°C, the reaction time is 25min, and the acid hydrolysis solution DE is 18 by sampling;

[0063] Then add an enzyme preparation at 0.004% by mass percentage, the enzyme activity ratio of α-amylase and transsidase in the enzyme preparation is 10:1, and react for 50 minutes to obtain a reaction solution;

[0064] (2) Adjust the pH value of the reaction solution prepared in step (1) to 4.9, add activated carbon in a proportion of 0.8% by mass, keep it static at 88°C for 50min, and then stir for 26min; filter through a plate frame, filter pressure 0.30Mpa, water The flow rate is 5.6t / h; the macroporous ion exchang...

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Abstract

The invention relates to resistant dextrin and a preparation method thereof. The DE value of the resistant dextrin is 5 to 20; the water activity is less than or equal to 0.85, and the average molecular weight is 1000 to 2500. The preparation method of the resistant dextrin comprises the following steps: (1) adding acid into a starch raw material, performing high-temperature vacuum dextrinization reaction, then adding deionized water, performing acidolysis to prepare an acidolysis solution, then adding an enzymic preparation proportionally, and performing reaction to prepare reaction liquid; (2) decoloring the reaction liquid through active carbon, filtering with a plate frame, desalting macroporous ion exchange resin, then performing chromatographic separation purification, performing conventional concentration to obtain resistant dextrin concentrated liquid, and drying to obtain the resistant dextrin. By means of effectively controlling the temperature and the time of acidolysis and optimally adjusting the proportion of alpha-amylase and trans-glycosides enzyme which are added, the resistant dextrin with low water activity is finally prepared.

Description

technical field [0001] The invention relates to a resistant dextrin and a preparation method thereof, belonging to the technical field of food additive production. Background technique [0002] With the improvement of people's living standards, many people have symptoms of hyperlipidemia, high blood pressure, and hyperglycemia, commonly known as the "three highs", and they tend to become younger and younger. The World Health Organization has clearly stated that the first line of defense in the prevention and treatment of cardiovascular disease is to reduce and control the "three highs". Among these people with three highs, except for those who are more serious and need to cooperate with drug treatment, most of them can be adjusted through diet therapy and other methods to avoid the side effects of drugs. [0003] Dietary fiber is a carbohydrate that cannot be digested by the human body. It is divided into two categories: insoluble and water-soluble fiber. In the "Twelfth F...

Claims

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Application Information

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IPC IPC(8): C12P19/04C12P19/14C12P19/18A23L29/30A23L3/3562
CPCC12P19/04A23L3/3562A23V2002/00C12P19/14C12P19/18A23V2200/18A23V2250/5118
Inventor 窦光鹏干昭波邵先豹李方华张明站张兴晶杜倩
Owner SHANDONG BAILONG CHUANGYUAN BIO TECH
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