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Starch ester and preparation method and use thereof

A starch ester and starch technology, applied in the field of starch ester and its preparation, can solve the problems of high viscosity, long molecular chain, unsuitable for application, etc., and achieve the effect of low viscosity

Inactive Publication Date: 2008-03-12
重庆泰威生物工程有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The molecular chain of natural native starch is very long, the viscosity is very high, the starch ester obtained by direct esterification still has a high viscosity, and this kind of high viscosity starch ester is only suitable for the application of viscous system, not suitable for beverage and other thin system application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: the preparation method of starch ester in the present invention is: at first take cornstarch as raw material, cornstarch is adjusted into the starch slurry of Baume degree 20 with water, be warmed up to 45 ℃, add the hydrochloric acid that weight percentage concentration is 2% carry out Acid degradation reaction 2 hours, wherein the addition of hydrochloric acid is by starch: hydrochloric acid=1: 2, and wherein starch is weight ratio, and hydrochloric acid is volume ratio; Then be 3% sodium hydroxide solution neutralization to pH be 6 with weight percentage concentration ~7; then this degraded starch is readjusted into a starch slurry with a Baume degree of 20, and the pH of the starch slurry is adjusted to 9.0 with a sodium hydroxide solution with a concentration of 3% by weight, and the temperature is raised to 30° C. Add esterifying agent octenyl succinic anhydride and carry out esterification reaction 5 hours, wherein octenyl succinic anhydride add-on i...

Embodiment 2

[0027] Embodiment 2: the preparation method of starch ester in the present invention, its steps are as follows: first the mixture of raw material corn starch and wheat starch is adjusted into the starch slurry of Baume degree 19 with water, is warmed up to 40 ℃, adds α-amylase to carry out enzyme Degradation reaction for 2 hours, wherein the amount of α-amylase added is 50 enzyme activity units / g starch; then neutralized with 10% hydrochloric acid to pH 3 to inactivate the enzyme for 30 minutes, and then use 3% sodium hydroxide with a concentration of 3% by weight The solution is returned to a pH of 6 to 7; the degraded starch is readjusted to a starch slurry with a Baume degree of 19, and the pH of the starch slurry is adjusted to 8.0 with a concentration of 3% sodium hydroxide solution by weight percentage, and the temperature is raised to After 35°C, carry out the esterification reaction by slowly adding the esterification agent octenyl succinic anhydride for 5 hours, wherei...

Embodiment 3

[0029] Embodiment 3: the preparation method of starch ester in the present invention, adopt following steps to make: take by weighing 1000g waxy cornstarch, be adjusted into the starch slurry of Baume degree 21 with water, add the hydrochloric acid solution that weight percent concentration is 2%, hydrochloric acid The addition amount of starch: hydrochloric acid=1: 2.5, and wherein starch is weight ratio, and hydrochloric acid is volume ratio; Be warming up to 45 ℃, carry out acid degradation reaction 2 hours, reaction is carried out under agitation, then with 4% sodium hydroxide solution and until the pH is 6-7, filtered and washed with water. The washed starch is slurried with water, and the Baume degree is controlled at 21. Use 4% sodium hydroxide solution to adjust the pH of the starch slurry to 8.5, raise the temperature to 30°C, slowly add the esterifying agent acetic anhydride to carry out the esterification reaction, the amount of acetic anhydride is 60g, drop it in 2...

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Abstract

The present invention provides a starch ester and the preparation method as well as the application of the starch ester. The starch ester takes natural starch as raw material and is obtained through esterification. The present invention is characterized in that: a degradation reaction takes place before and after the esterification. The preparation method of the starch ester lies in that the natural starch is degraded to reduce the viscosity of the starch. And then the starch experiences esterification to generate starch ester, which is low-viscosity starch ester. Or the natural starch material experiences the esterification first to generate starch ester, which then takes the degradation reaction to reduce the viscosity of the starch ester so as to generate low-viscosity ester. The present invention is suitable to the oily substances such as oil plants, flavors, spices and so on which are of stable emulsification and good effect in water. The present invention also provides the application of the starch ester as emulsification stabilizer in the thin system such as in the drinks and so on.

Description

technical field [0001] The invention relates to the field of modified starch, in particular to a starch ester and its preparation method and application. Background technique [0002] Starch is a natural polymer formed by the polymerization of glucose, which is biologically safe. Due to the effect of its macromolecular chain, it has a strong ability to stabilize the dispersed fine oil droplet starch in water. However, starch itself has no emulsifying and dispersing ability. If starch is esterified to produce acetate starch or octenyl succinate starch, this modified starch will have emulsifying and stabilizing functions at the same time, and the application effect in the oil-in-water system very good. [0003] The molecular chain of natural native starch is very long, the viscosity is very high, the starch ester obtained by direct esterification still has a high viscosity, and this kind of high viscosity starch ester is only suitable for the application of viscous system, n...

Claims

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Application Information

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IPC IPC(8): C08B31/02C08B30/12A23L2/62
Inventor 刘勋张涛黄毅
Owner 重庆泰威生物工程有限责任公司
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