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Predextrinization acetate starch and its preparation method

A technology of acetate starch and pregelatinization, applied in the field of pregelatinization acetate starch and its preparation, can solve the problems of poor rehydration of finished products, poor transparency of paste liquid, complicated process, etc., and achieves good product application effect and production The effect of low cost and wide source of raw materials

Inactive Publication Date: 2007-01-31
四平帝达变性淀粉有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, with the increasing pace of people's life, various quick-frozen foods and convenience foods have emerged as the times require, and the fields are becoming wider and larger, especially in the field of instant noodles, where the amount of modified starch added is about 10%. , it can be said that the demand for modified starch will increase in the future, especially acetate starch because of its excellent rehydration, good transparency, instant food and quick-frozen food made without muddy soup during cooking , continuous strips and other advantages, which are more favored by manufacturers, but domestic products of this kind generally have disadvantages such as low degree of substitution, poor transparency of paste liquid, and poor rehydration of the finished product.
Moreover, because it is not a modified starch that can be gelatinized by cold water, it has disadvantages such as complicated process and high cost in the application process.

Method used

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  • Predextrinization acetate starch and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] First, add 100 kg of potato or tapioca starch and 180 kg of water into the reactor to form a 20-23Be starch slurry, stir continuously, add a sodium hydroxide solution with a mass concentration of 3-3.8% to the reactor to adjust the pH value to 7.5, and add acetic anhydride 4.5 kg, keep the temperature at 20±1°C to make it react, continuously add dropwise sodium hydroxide solution with a mass concentration of 3-3.8% during the reaction, maintain the pH value at 8.5, continue to react for 1 hour after adding acetic anhydride, add Mass concentration is 8-10% hydrochloric acid solution and pH value 6.0-7.0, adds 200 kilograms of water washings, sedimentation in the kettle, washes again in the same way, to remove impurity (sodium chloride or other chemical residues), the preparation To obtain the primary product of acetate starch, adjust the primary product into starch milk with a mass concentration of 20%, carry out pregelatinization at a drum temperature of 170° C., pulveri...

Embodiment 2

[0028] The steps are the same as in Example 1, except that the pH value of the esterification process is maintained at 8.0, and the reaction temperature is maintained at 20±1°C.

Embodiment 3

[0030] The steps are the same as in Example 1, except that the pH value of the esterification process is maintained at 8.5, and the reaction temperature is maintained at 20±1°C.

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Abstract

The present invention discloses a kind of pregelatinized acetate starch and its preparation method. It is made up by using water as medium, using various potato or cassava starches, acetic anhydride, hydrochloric acid and sodium hydroxide as raw material through 11 processes of maxing paste, esterification, neutralization, washing, drying, screening, mixing paste, pregelatinizing, pulverizing, screening and packaging. It can be used in the frozen food and instant food of food industry.

Description

technical field [0001] The invention relates to a modified starch and a preparation method thereof, in particular to a pregelatinized acetate starch and a preparation method thereof. Background technique [0002] In recent years, with the increasing pace of people's life, various quick-frozen foods and convenience foods have emerged as the times require, and the fields are becoming wider and larger, especially in the field of instant noodles, where the amount of modified starch added is about 10%. , it can be said that the demand for modified starch will increase in the future, especially acetate starch because of its excellent rehydration, good transparency, instant food and quick-frozen food made without muddy soup during cooking The advantages of uninterrupted strips are more favored by manufacturers, but domestic products of this kind generally have disadvantages such as low degree of substitution, poor transparency of paste liquid, and poor rehydration of the finished p...

Claims

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Application Information

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IPC IPC(8): C08B31/04
Inventor 王三平王云志曾蒲春
Owner 四平帝达变性淀粉有限公司
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