Preparation method of small-particle potato hydroxypropyl crosslinked starch

A technology of potato starch and cross-linked starch, applied in the field of starch preparation, can solve the problem of high production cost of small-granule potato starch, and achieve the effects of solving sales problems, improving whiteness and improving shear resistance.

Inactive Publication Date: 2012-09-12
黑龙江北大荒斯达奇生物科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of high production cost of existing small particle potato starch, and provide a kind of preparation method of small particle potato hydroxypropyl cross-linked starch

Method used

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  • Preparation method of small-particle potato hydroxypropyl crosslinked starch
  • Preparation method of small-particle potato hydroxypropyl crosslinked starch
  • Preparation method of small-particle potato hydroxypropyl crosslinked starch

Examples

Experimental program
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Effect test

specific Embodiment approach 1

[0010] Specific embodiment one: the preparation method of a kind of small particle potato hydroxypropyl cross-linked starch of the present embodiment is carried out according to the following steps: one, put small particle potato starch and sodium sulfate into pure water, stir and mix uniformly , to obtain the starch milk with a starch concentration of 24.0 to 25.0Be; 2. at room temperature, use a sodium hydroxide solution with a mass percentage of 3.0% to 3.7% to adjust the pH value of the starch milk obtained in step 1 to 11.40 to 11.50, Then add the etherifying agent that accounts for 6%~7% of the quality of small-sized potato starch in step 1 to obtain the starch milk mixed solution; 3, the starch milk mixed solution obtained in step 2 is 3.0%~3.7% by mass percentage Sodium hydroxide solution, adjust the pH value to 4.2~4.5, then raise the temperature to 40°C~45°C, detect the peak viscosity and gelatinization temperature of the starch milk mixed solution, when the peak visc...

specific Embodiment approach 2

[0012] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the etherification agent described in step 2 is propylene oxide. Others are the same as the first embodiment.

specific Embodiment approach 3

[0013] Specific embodiment three: this embodiment is different from specific embodiments one to two in that: the addition of the etherification agent described in step two accounts for 6% of the mass of small-sized potato starch in step one. Others are the same as Embodiments 1 to 2.

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Abstract

The invention relates to a preparation method of starch, in particular to a preparation method of small-particle potato hydroxypropyl crosslinked starch, aiming at solving the problem that the existing small-particle potato starch is high in production cost. The preparation method comprises the steps of: 1. preparing starch milk with the concentration of 24.0-26.0 baume degrees; 2. adjusting the pH value of the starch milk to be 11.40-11.50, and adding epoxypropane into the starch milk; 3. taking 50ml of starch milk, adjusting the pH value of the starch milk to be 4.2-4.5, heating to 45 DEG C, detecting the starch viscosity and gelatinization point, and adding a cross-linking agent into the heated starch milk; and 4. taking 50ml of starch milk, adjusting the pH value of the starch milk to be 4.2-4.5, detecting the starch viscosity and gelatinization point, adjusting the pH value of the starch milk to be 4.2-4.5, filtering, and drying to obtain the small-particle potato hydroxypropyl crosslinked starch. The small-particle potato hydroxypropyl crosslinked starch produced by the preparation method is high in paste liquid freeze-thaw stability, acid-base resistant and strong in shear resistance, and is applied to the fields such as food, medicine and cosmetic.

Description

technical field [0001] The invention relates to a method for preparing starch. Background technique [0002] At present, with the development of the food industry, the market competition of various enterprises is intensified, and how to reduce costs has become one of the main factors for enterprises to improve their competitiveness. Since potato starch with large granules is welcomed by many merchants, the potato starch is classified in particle size during the production process (starch with a particle size of 20-28 microns measured by a particle size analyzer is defined as small granule potato starch) , which causes a part of small particle potato starch to be separated, and this part of small particle potato starch cannot be well used, which has just caused the improvement of production cost. Contents of the invention [0003] The purpose of the present invention is to solve the problem of high production cost of the existing small particle potato starch, and to provid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B31/00C08B31/12
Inventor 崔媛刘大伟邵亚东刘晓成李祥兴徐明亮王丽丽
Owner 黑龙江北大荒斯达奇生物科技有限公司
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