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Method for preparing sticky rice modified starch with adsorption and sustained release capacity

A technology of modified starch and ability, applied in the field of starch preparation, can solve the problems of space structure damage, reduced adsorption performance, swelling, etc., and achieve the effects of inhibiting swelling, inhibiting water absorption swelling speed, and good water absorption

Inactive Publication Date: 2012-09-26
黑龙江北大荒斯达奇生物科技有限公司
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing porous starch will swell when the starch molecules are preheated with water, the space structure will be destroyed, and the adsorption performance will be reduced, so as to provide a glutinous rice modified starch with adsorption and slow-release ability. preparation method

Method used

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  • Method for preparing sticky rice modified starch with adsorption and sustained release capacity
  • Method for preparing sticky rice modified starch with adsorption and sustained release capacity
  • Method for preparing sticky rice modified starch with adsorption and sustained release capacity

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specific Embodiment approach 1

[0012] Specific implementation mode one: a kind of preparation method of glutinous rice modified starch with adsorption and slow-release ability of this embodiment is carried out through the following steps: 1. Weigh 0.01~0.04 parts of sodium acetate, 0.05~0.08 parts by weight acetic acid, 6000~7000 parts of pure water and 3000~4000 parts of glutinous rice starch were put into a four-neck flask, nitrogen was used as a protective gas, and under the condition of a vacuum of 0.09Mpa, stirred at room temperature for 15~30min, namely Obtain a mixed solution; 2. Heat the mixed solution obtained in step 1 to 41°C~42°C, then add β-amylase for enzymolysis reaction for 18~20h, then add sodium hydroxide and crosslinking agent to carry out crosslinking reaction 3~4h to get the reaction solution; 3. Use 15% hydrochloric acid to adjust the pH value of the reaction solution obtained in step 3 to 5.0~5.5, then filter and wash 3 times, collect the solid phase, and dry at 50~55°C for 8 ~12h, th...

specific Embodiment approach 2

[0015] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the cross-linking agent described in step 2 is sodium trimetaphosphate. Others are the same as the first embodiment.

specific Embodiment approach 3

[0016] Specific embodiment three: this embodiment is different from specific embodiments one to two in that: the mass volume ratio of the β-amylase described in step two to the mixed solution is 0.24g:100mL. Others are the same as Embodiments 1 to 2.

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Abstract

The invention discloses a method for preparing sticky rice modified starch with adsorption and sustained release capacity, relates to a method for preparing starch, and aims to solve the problems that starch molecules are swollen when meeting water and heat, so the space structure is damaged, and the adsorption performance is reduced during application of the conventional porous starch. The method comprises the following steps of: stirring sodium acetate, acetic acid, water and starch under the protection of nitrogen at room temperature for 15 to 30 minutes to obtain a mixed solution; 2, heating the mixed solution to 42 DEG C, adding beta-amylase, performing enzymolysis for 18 to 20 hours, adding alkali and a cross-linking agent, and performing cross-linking reaction to obtain reaction liquid; and 3, adjusting the pH value of the reaction liquid to be 5.0 to 5.5, filtering, washing and drying to obtain the sticky rice modified starch with the adsorption and sustained release capacity. By the method, the freeze-thaw stability, the acid resistance, the high temperature stability and other performance are improved greatly. By the method, the intensity and the adsorbability of the starch can be improved obviously. The method can be applied to the fields of food, medicines and cosmetics.

Description

technical field [0001] The invention relates to a method for preparing starch. technical background [0002] Porous starch is an emerging marginal subject in the past 30 years. Many scholars at home and abroad have a strong interest in it. As far as China is concerned, porous starch is mainly used in several products in the fields of food, medicine, and cosmetics. Others It is basically in the research stage, and lags behind the United States and Japan in the expansion of application fields and the development of new derivatives. At home and abroad, it mainly researches and develops two types of products: corn and rice. [0003] Since porous starch has a special hollow space structure, as a natural organic matter, it has not been eroded by any chemical reagents during the formation process, and has strong adsorption properties, so it has different applications from general inorganic adsorbents. Performance, when it can adsorb mixtures containing different polar substances,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B31/00
Inventor 崔媛高常青董辉滕刚周鹏嵩
Owner 黑龙江北大荒斯达奇生物科技有限公司
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