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Preparation technology of acetylated distarch adipate

A technology for acetylated distarch and adipate, which is applied in the field of preparation of acetylated distarch adipate, can solve the problems of starch thermal paste stability, difference in viscosity, etc., and achieves enhanced shear resistance and improved Shear resistance, the effect of improving cross-linking efficiency

Inactive Publication Date: 2019-04-26
GUANGXI GAOYUAN STARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the preparation process conditions of acetylated double starch adipate are different, and the obtained starch hot paste stability, viscosity and other properties will be different, and the best acetylated double starch adipate can be prepared by changing the process conditions

Method used

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  • Preparation technology of acetylated distarch adipate

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Effect test

Embodiment 1

[0024] A kind of preparation technology of acetylated distarch adipate, comprises the following steps:

[0025] Inject the process water into the feeding tank, put in the original starch, adjust the concentration of the starch milk to 18 degrees Baume, beat the adjusted starch slurry into the reaction tank; adjust the pH value to 7.8 with a dilute alkali solution, and add no more than the mass fraction of starch on a dry basis 0.12% adipic acid is reacted with acetic anhydride not exceeding 8% of starch dry basis mass fraction, and the addition rate of acetic anhydride is 200L / h. Washing in a disc centrifuge, the conductivity of the starch milk after washing is ≤3000μs / cm, then dehydrating with a scraper, and then drying in an airflow dryer, the drying tail air temperature is 55°C, the moisture content of the dried product is <18%, and then sieved to Fineness ≥ 99.0%, then package the finished product, the net weight of the finished product is 25kg, and then put it into storag...

Embodiment 2

[0027] A kind of preparation technology of acetylated distarch adipate, comprises the following steps:

[0028] Pour the process water into the feeding tank, put in the original starch, adjust the concentration of the starch milk to 27 degrees Baume, beat the adjusted starch slurry into the reaction tank; adjust the pH value to 9.5 with a dilute alkali solution, and add no more than the starch dry basis mass fraction 0.12% adipic acid is reacted with acetic anhydride not exceeding 8% of starch dry basis mass fraction, and the addition rate of acetic anhydride is 350L / h. Washing in a disc centrifuge, the conductivity of the starch milk after washing is ≤3000μs / cm, then dehydrating with a scraper, and then drying in an airflow dryer, the drying tail air temperature is 55°C, the moisture content of the dried product is <18%, and then sieved to Fineness ≥ 99.0%, then package the finished product, the net weight of the finished product is 25kg, and then put it into storage.

Embodiment 3

[0030] A kind of preparation technology of acetylated distarch adipate, comprises the following steps:

[0031] Inject the process water into the feeding tank, put in the original starch, adjust the concentration of the starch milk to 22.5 degrees Baume, beat the adjusted starch slurry into the reaction tank; adjust the pH value to 8.7 with a dilute alkali solution, and add no more than the starch dry basis mass fraction 0.12% adipic acid is reacted with acetic anhydride not exceeding 8% of starch dry basis mass fraction, and the addition rate of acetic anhydride is 275L / h. Washing in a disc centrifuge, the conductivity of the starch milk after washing is ≤3000μs / cm, then dehydrating with a scraper, and then drying in an airflow dryer, the drying tail air temperature is 55°C, the moisture content of the dried product is <18%, and then sieved to Fineness ≥ 99.0%, then package the finished product, the net weight of the finished product is 25kg, and then put it into storage.

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Abstract

The invention discloses a preparation technology of acetylated distarch adipate. The preparation technology comprises the following steps: step one, adding starch into rice bran oil for reacting at the temperature of 100 to 110 DEG C for 20 to 30 min, stirring at the rotate speed of 300 to 400 rpm for 35 to 45 min, then carrying out washing, centrifuging and drying, then feeding the mixture into afeeding pool, then adding water to prepare a starch emulsion, and then adding pectin. According to the preparation technology, the rice bran oil has various active ingredients such as fatty acids, agreat number of hydroxide radicals are generated at the temperature of 100 to 110 DEG C, the hydroxide radicals are combined with starch, the esterification efficiency of starch and acetic anhydride and the cross-linking efficiency of adipic acid are improved, simultaneously, the viscosity of the starch emulsion can be improved through the added pectin, and the cross-linking efficiency of starch in the subsequent cross-linking process is improved.

Description

technical field [0001] The invention relates to the technical field of preparation of modified starch, in particular to a preparation process of acetylated distarch adipate. Background technique [0002] Acetylated distarch adipate, also known as double-denatured glutinous rice flour, is a white to similar white powder, odorless, tasteless, insoluble in cold water and ethanol, and turns reddish brown when it meets iodine. It is a widely used chemical compound. Modified starch, the product not only has the inherent characteristics of glutinous rice, such as fragrance, waxy, sticky, etc., but also has the good anti-aging and molding properties of modified starch, which can be applied to the processing of cakes such as mochi and Qingtuan. Starch adipate is a compound modified starch obtained by cross-linking and esterifying starch with mixed anhydride of adipic acid and acetic anhydride, and double denaturing starch. Transparency, low temperature stability and acid resistance,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B31/04C08J3/24C08L3/06C08L5/06
CPCC08B31/04C08J3/246C08J2303/06C08J2405/06
Inventor 张晋滔张晋源何佳蔚
Owner GUANGXI GAOYUAN STARCH
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