Acetylated hydroxypropyl potato starch, preparation method thereof and application thereof

A technology for acetylating hydroxypropyl and potato starch, which can be used in food preparation, starch-derived adhesives, applications, etc., and can solve the problems of poor viscosity, insufficient advantages, and poor retrogradation resistance of hydroxypropyl starch , to achieve the effect of low cost, abundant raw materials and stable product quality

Inactive Publication Date: 2011-02-09
内蒙古奈伦农业科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in long-term application, it has been found that hydroxypropyl starch has problems such as poor viscosity, low emulsification, poor anti-retrogradation and insufficient stability, and there are also advantages that hydroxypropyl starch should have when using hydroxypropyl starch in acidic foods underperforming

Method used

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  • Acetylated hydroxypropyl potato starch, preparation method thereof and application thereof
  • Acetylated hydroxypropyl potato starch, preparation method thereof and application thereof
  • Acetylated hydroxypropyl potato starch, preparation method thereof and application thereof

Examples

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Effect test

Embodiment 1

[0045] The preparation of embodiment 1 acetylated hydroxypropyl potato starch

[0046] Prepare acetylated hydroxypropyl potato starch according to the following steps:

[0047] 1) Slurry: 28.5Kg anhydrous Na 2 SO 4 Dissolve 15kg of solid NaOH in 260kg of water, then dissolve 210kg of potato starch in the solution, stir to obtain starch milk;

[0048] 2) Etherification: Add 3.8% sodium hydroxide lye to the starch milk in step 1) to pH = 10.90, stir for half an hour; add 12.6Kg of propylene oxide, seal, stir for one hour, and heat up the starch milk to 42°C-43°C; after 20 hours of reaction, cool down and neutralize to pH=8.20;

[0049] 3) Esterification: add 5.25Kg of acetic anhydride to carry out esterification reaction, and add 3.8-% sodium hydroxide lye to keep the pH between 8.20-8.40;

[0050] 4) Neutralization: after the reaction, neutralize to pH=5.5 with 9% hydrochloric acid;

[0051] 5) Washing: washing with a cyclone washer; drying: first dehydrating to ≤45% with ...

Embodiment 2

[0054] The preparation of embodiment 2 acetylated hydroxypropyl potato starch

[0055] Prepare acetylated hydroxypropyl potato starch according to the following steps:

[0056] 1) Slurry mixing: 28.5kg anhydrous Na 2 SO 4 Dissolve 1.5kg of solid NaOH in 255kg of water, then dissolve 215kg of potato starch in the solution, stir to obtain starch milk;

[0057] 2) Etherification: Add 4.2% sodium hydroxide lye to the starch milk in step 1) to pH = 11.30, stir for half an hour; add 15.05Kg of propylene oxide, seal, stir for one hour, and heat up the starch milk to 42°C-43°C; after 24 hours of reaction, cool down and neutralize to pH=8.20;

[0058] 3) Esterification: add 6.45Kg of acetic anhydride to carry out the esterification reaction, and add 4.2% sodium hydroxide alkali to keep the pH at 8.40;

[0059] 4) Neutralization: after the reaction, neutralize to pH=6.0 with 11% hydrochloric acid;

[0060] 5) Washing: Washing with a cyclone washer; Drying: First use a centrifugal s...

Embodiment 3

[0063] The preparation of embodiment 3 acetylated hydroxypropyl potato starch

[0064] Prepare acetylated hydroxypropyl potato starch according to the following steps:

[0065] 1) Slurry mixing: 28.5kg anhydrous Na 2 SO 4 Dissolve 1.5kg of solid NaOH in 255kg of water, then dissolve 215kg of potato starch in the solution, stir to obtain starch milk;

[0066] 2) Etherification: Add 3.8% sodium hydroxide lye to the starch milk in step 1) to pH = 11.10, stir for half an hour; add 17.2kg of propylene oxide, seal, stir for one hour, and heat up the starch milk to 41°C-42°C; after 22 hours of reaction, cool and neutralize to pH=8.30;

[0067] 3) Esterification: add 6.45Kg of acetic anhydride to carry out esterification reaction, and add 4.0% sodium hydroxide lye to keep the pH at 8.20;

[0068] 4) Neutralization: after the reaction, neutralize to pH=6.5 with 10% hydrochloric acid;

[0069] 5) Washing: Washing with a cyclone washer; Drying: First use a centrifugal scraper to deh...

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Abstract

The invention provides acetylated hydroxypropyl potato starch, a preparation method thereof and application thereof. The preparation method comprises the steps of: performing an etherification reaction of potato starch by adopting epoxypropane to obtain hydroxypropyl potato starch; and performing an etherification reaction by adopting acetic anhydride. The acetylated hydroxypropyl potato starch prepared according to the preparation method has the advantages of good hydrophily, vicidity and emulsibility, low pasting temperature, transparent paste liquid, weak retrogradation, high stability, high temperature resistance, acidic environment resistance, high freeze thawing stability and the like.

Description

technical field [0001] The application relates to a preparation method of acetylated hydroxypropyl potato starch, and the acetylated hydroxypropyl potato starch prepared according to the method and its application. Background technique [0002] As the proportion of the food industry in the gross national product increases, a large amount of food additives is required. As the basic raw material of the food industry, starch cannot meet the quality stability of food storage and processing due to the aging phenomenon caused by its structure and performance, so it needs to be denatured. Since the 1940s, Western economically developed countries began to produce modified starches on a large scale. There are more than 500 kinds of modified starches used in food in the United States, and the consumption is more than 500,000 tons. The development and production of modified starch in my country started relatively late, but developed rapidly. After more than 20 years of development, it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J103/04C08B31/16A23L1/0522A23L29/219
Inventor 黄艳萍吕春林周庆锋
Owner 内蒙古奈伦农业科技股份有限公司
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