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Preparation method of hydroxypropyl starch resistant dextrin

A technology of hydroxypropyl starch and resistant dextrin, which is applied in the field of preparation of hydroxypropyl starch resistant dextrin, can solve the problems of high free glucose content, low content of resistant dextrin, and reduced product yield, etc. High transparency, strong fluidity, and the effect of increasing solubility

Pending Publication Date: 2019-08-13
深圳市悠阳天颂科技发展有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In summary, the main problem of the existing technology for preparing resistant dextrin is the high content of free glucose and low content of resistant dextrin, and the use of desugaring technology will greatly increase the cost and reduce the product yield

Method used

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  • Preparation method of hydroxypropyl starch resistant dextrin
  • Preparation method of hydroxypropyl starch resistant dextrin

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preparation example Construction

[0026] The embodiment of the present invention provides a preparation method of hydroxypropyl starch resistant dextrin, comprising the following steps:

[0027] a. Heat the acid-treated hydroxypropyl starch to 105-220°C and keep it for 5-600 minutes to obtain pyrodextrin containing hydroxypropyl starch. The water content of the acid-treated hydroxypropyl starch is 3-15 %;

[0028] b. Mix pyrodextrin containing hydroxypropyl starch and water at a weight ratio of 1:1-6 to make milky, adjust the pH to 6-8, add α-amylase, and react at 30-105°C for 0.1-5h , the added amount of the α-amylase is 1-10000U / g dry weight of hydroxypropyl starch;

[0029] c. Adding starch branching enzyme, reacting at 30-80°C for 0.1-5h to obtain a semi-finished product, the addition amount of the starch branching enzyme is 1-10000U / g dry weight of hydroxypropyl starch;

[0030] d. The semi-finished product is subjected to enzyme inactivation treatment, filtration treatment, drying treatment, decoloriza...

specific Embodiment 1

[0033] A preparation method of hydroxypropyl starch resistant dextrin, comprising the following steps:

[0034] a. heating the acid-treated hydroxypropyl starch with a water content of 15% to 220° C. and keeping it for 160 minutes to obtain pyrodextrin containing hydroxypropyl starch;

[0035] b. Mix pyrodextrin containing hydroxypropyl starch and water at a weight ratio of 1:6 to make milky, adjust the pH to 6, add α-amylase, and react at 30°C for 5 hours, the α-amylase The addition amount is 1000U / g hydroxypropyl starch dry weight;

[0036] c. adding starch branching enzyme, reacting at 30°C for 5h to obtain a semi-finished product, the addition of the starch branching enzyme is 1000U / g dry weight of hydroxypropyl starch;

[0037] d. The semi-finished product is subjected to enzyme inactivation treatment, filtration treatment, drying treatment, decolorization treatment, desalination treatment, and pulverization treatment to obtain hydroxypropyl starch resistant dextrin.

specific Embodiment 2

[0039] A preparation method of hydroxypropyl starch resistant dextrin, comprising the following steps:

[0040] a. heating the acid-treated hydroxypropyl starch with a water content of 10% to 200°C and keeping it for 60 minutes to obtain pyrodextrin containing hydroxypropyl starch;

[0041] b. Mix pyrodextrin containing hydroxypropyl starch and water at a weight ratio of 1:4 to make milk, adjust the pH to 7, add α-amylase, and react at 50°C for 2 hours. The α-amylase The addition amount is 10000U / g dry weight of hydroxypropyl starch;

[0042] c. Add starch branching enzyme and react at 50°C for 2 hours to obtain a semi-finished product, the amount of starch branching enzyme added is 10000U / g dry weight of hydroxypropyl starch;

[0043] d. The semi-finished product is subjected to enzyme inactivation treatment, filtration treatment, drying treatment, decolorization treatment, desalination treatment, and pulverization treatment to obtain hydroxypropyl starch resistant dextrin. ...

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Abstract

The invention discloses a preparation method of hydroxypropyl starch resistant dextrin, and relates to the technical field of resistant dextrin. According to the method, hydroxypropyl starch is used as a raw material, prepared starch paste has high transparency, high fluidity, weak retrogradation performance, high stability and good freeze-thaw stability, then alpha-amylase is added for hydrolysis, the solubility of glucose is improved, the content of free glucose in the product can be effectively reduced, and the content of the resistant dextrin is increased; then a starch branching enzyme isadded, the digestion resistance of the starch paste is improved, and therefore the content of the resistant dextrin is more effectively increased. The preparation process for preparing the resistantdextrin by using the hydroxypropyl starch is simple, the yield is high, detection is carried out by means of the method which accords with the national food safety standard GB 5009.88-2014, the content of the resistant dextrin reaches 80% or above, the content of free glucose is 10% or below, and the method has industrial production value.

Description

technical field [0001] The invention relates to the technical field of resistant dextrin, in particular to a preparation method of hydroxypropyl starch resistant dextrin. Background technique [0002] Resistant dextrin, also known as indigestible dextrin, is a low-calorie food raw material. Resistant dextrin has high solubility, low viscosity, low sweetness, no peculiar smell, and has various physiological functions of dietary fiber. In recent years, it has gradually become a key research object in the food processing industry. Resistant dextrin was invented by Matsutani Chemical Industry Co., Ltd. in Japan. It was initially prepared by acid-heat method, that is, starch was treated with low-concentration hydrochloric acid solution at high temperature, but the purity of the obtained resistant dextrin product was not high. In 2007, Matsutani Chemical Industry Co., Ltd. disclosed a new method for preparing resistant dextrin, which is used to produce resistant dextrin containin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P19/04C12P19/14C12P19/16
CPCC12P19/04C12P19/14C12P19/16
Inventor 姜琼杨永康尹忠洲
Owner 深圳市悠阳天颂科技发展有限公司
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