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Method for preparing resistant starch RS3 from high-amylose corn starch

A technology of corn starch and resistant starch, which is applied in the field of starch processing, can solve problems such as poor taste, and achieve the effects of strong resistance to enzymolysis, high content of resistant starch, and smooth taste

Pending Publication Date: 2021-12-14
WEIFANG SHENGTAI PHARM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above problems, the present invention provides a method for preparing resistant starch RS3 with high amylose corn starch, which can solve the problems of poor mouthfeel such as "sandy feeling" in products produced by the prior art, and also improve the resistant starch in the final product. Starch content increased to 76%

Method used

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  • Method for preparing resistant starch RS3 from high-amylose corn starch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Sizing: use high-amylose starch as raw material to prepare starch milk with a concentration of 20%, adjust the pH of the starch milk to 4.5 with 2mol / L hydrochloric acid, and add pullulan with a starch dry basis weight of 1‰ to the starch milk Enzyme, 0.3% sodium ascorbate, 2% hydrogenated soybean oil, 0.1% monoglyceride;

[0031] (2) Enzymolysis: Put the prepared liquid into a temperature-controllable autoclave container, stir the enzymolysis at 45°C for 6 hours, raise the temperature of the feed liquid to 95°C and continue stirring for 2 hours;

[0032] (3) Autoclaving: Stop stirring, increase the temperature of the feed liquid to 130°C, press 0.21MPa, and autoclave for 60 minutes;

[0033] (4) Refrigeration: Gradually lower the temperature of the material liquid to 35°C within 4 hours, and then refrigerate the material at 4°C for 30 hours;

[0034] (5) Crushing and sieving: crush the material with a jet mill, pass through a 100-mesh sieve, and the under-sieve is...

Embodiment 2

[0036] (1) Sizing: use high-amylose starch as raw material to prepare starch milk with a concentration of 30%, adjust the pH of the starch milk to 4.6 with 2mol / L hydrochloric acid, and add pullulan with a dry basis weight of starch of 2‰ to the starch milk Enzymes, 0.3% sodium ascorbate, 4% 52-degree palm oil, 0.2% monoglyceride;

[0037] (2) Enzymolysis: Put the prepared liquid into a temperature-controllable autoclave container, stir the enzymolysis at 40°C for 8 hours, raise the temperature of the feed liquid to 95°C and continue stirring for 2 hours;

[0038] (3) Autoclaving: Stop stirring, raise the temperature of the feed liquid to 140°C, press 0.3MPa, and autoclave for 60 minutes;

[0039] (4) Refrigeration: Gradually lower the temperature of the material liquid to 35°C within 4 hours, and then refrigerate the material at 4°C for 30 hours;

[0040] (5) Crushing and sieving: crush the material with a jet mill, pass through a 100-mesh sieve, and the under-sieve is the t...

Embodiment 3

[0042] (1) Sizing: use high-amylose starch as raw material to prepare starch milk with a concentration of 40%, adjust the pH of the starch milk to 4.5 with 2mol / L hydrochloric acid, and add pullulan with a starch dry basis weight of 1‰ to the starch milk Enzyme, 0.3% sodium ascorbate, 4% hydrogenated soybean oil, 0.2% monoglyceride;

[0043] (2) Enzymolysis, autoclaving, refrigeration, crushing, and sieving are the same as in Example 2. (The resistant starch content of the finished product is 69.5%. After boiling 10% starch milk for 2 minutes, more than 85% of the resistant starch still remains, and the heat loss is small)

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Abstract

The invention discloses a method for preparing resistant starch RS3 from high-amylose corn starch. The method comprises the following steps: slurrying the high-amylose corn starch, then, adding an antioxidant, high-melting-point grease and a debranching enzyme, carrying out uniform mixing, then, carrying out refrigerating treatment at high temperature and high pressure and low temperature, and carrying out crushing and sieving, thereby obtaining the resistant starch RS3. According to the resistant starch RS3 produced by the method, the defect of 'sand grain feeling' of the existing products is overcome, and the product has the advantages of smooth taste, high resistant starch content, good heat resistance and high enzymolysis resistance.

Description

technical field [0001] The invention belongs to the technical field of starch processing, and in particular relates to a method for preparing resistant starch RS3 from high-amylose corn starch. Background technique [0002] Resistant starch, also known as enzymatic-resistant starch and indigestible starch, is divided into four types: RS1, RS2, RS3, and RS4. RS1 and RS2 type resistant starch are not resistant to high Resistant starch is a chemically modified starch whose safety needs to be verified and its application is limited, while RS3 type resistant starch is aged starch, which is formed by changing the spatial structure of starch and is not easy to be enzymatically hydrolyzed. Due to foreign monopoly, there are very few manufacturers producing RS3 resistant starch, and because of the aging process, RS3 resistant starch has a "sandy feel" and poor taste, so the development of RS3 resistant starch has been slow. [0003] At present, the preparation methods of resistant s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P19/04C12P19/16
CPCC12P19/04C12P19/16
Inventor 刘伟杰李涛郑如梦王新颖郑汝红
Owner WEIFANG SHENGTAI PHARM CO LTD
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