Composite modified starch and preparation method thereof

A technology for compounding modified starch and starch slurry, applied in the field of modified starch, can solve the problems of high cost, high equipment requirements, high energy consumption, etc., and achieve the effects of easy operation, easy control of process conditions, and strong practicability

Inactive Publication Date: 2019-09-06
HENAN HENGRUI STARCH TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, for other oil-containing sauces, starch sodium octenyl succinate alone cannot achieve the desired thickening effect, and must be compounded with hydroxypropyl distarch phosphate, acetylated distarch phosphate or carboxymethyl starch use, greatly increasing the workload of product formulation research and increasing the burden of procurement
In addition, starch sodium octenyl succinate after enzyme treatment, dextrinization, acid treatment, and bleaching treatment is generally spray-dried, which has high requirements for equipment, difficulty in mass production, unstable process, high energy consumption, high cost, and severe limitations. Application of starch sodium octenyl succinate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Deploying starch slurry: take 120 parts of water and put it in the reaction kettle, turn on the agitator, add 8 parts of sodium sulfate under stirring, add 100 parts of waxy cornstarch after the sodium sulfate is dissolved, and stir evenly to obtain Starch slurry;

[0027] (2) Etherification reaction: adjust the pH of the starch slurry obtained in the above step (1) to 11 with a sodium hydroxide solution with a mass concentration of 2%, add 5 parts of propylene oxide, react at 20°C for 2h, and heat up to 35°C , etherified at pH 11 for 14h;

[0028] (3) Crosslinking reaction: adjust the pH of the reaction solution of the above step (2) to 10 with a hydrochloric acid solution with a mass concentration of 10%, add 0.1 part of sodium trimetaphosphate, and react to the desired viscosity;

[0029] (4) Adjust the pH of the reaction solution that has completed the crosslinking reaction in the above step (3) to 9 with 10% hydrochloric acid solution, add 4 parts of octenyl s...

Embodiment 2

[0032] (1) Deploying starch slurry: take 150 parts of water and put it in the reaction kettle, turn on the agitator, add 9 parts of sodium chloride under stirring, add 100 parts of cornstarch after the sodium chloride is dissolved, and stir evenly. Starch slurry;

[0033] (2) Etherification reaction: adjust the pH of the starch slurry obtained in the above step (1) to 12 with a sodium hydroxide solution with a mass concentration of 2-3%, add 8 parts of propylene oxide, react at 15°C for 2h, and heat up to Etherification at pH 11 for 16 hours at 40°C;

[0034] (3) Cross-linking reaction: adjust the pH of the reaction solution in the above step (2) to 11 with a hydrochloric acid solution with a mass concentration of 20%, add 0.3 parts of phosphorus oxychloride, and react to the required viscosity;

[0035] (4) Adjust the pH to 10 with 20% hydrochloric acid solution in the reaction liquid that has completed the crosslinking reaction in the above step (3), add 6 parts of octenyl ...

Embodiment 3

[0038] (1) Deploying starch slurry: take 180 parts of water and put it in the reaction kettle, turn on the agitator, add 10 parts of sodium sulfate under stirring, add 100 parts of tapioca starch after the sodium sulfate is dissolved, and stir evenly to get the starch slurry milk;

[0039] (2) Etherification reaction: adjust the pH of the starch slurry obtained in the above step (1) to 12 with a sodium hydroxide solution with a mass concentration of 3%, add 10 parts of propylene oxide, react at 25°C for 2h, and heat up to 45°C , etherified at pH 12 for 18h;

[0040] (3) Cross-linking reaction: adjust the pH of the reaction solution of the above step (2) to 11 with a mass concentration of 10% sulfuric acid solution, add 0.4 parts of sodium trimetaphosphate, and react to the required viscosity;

[0041] (4) Adjust the pH to 10 with 10% sulfuric acid solution in the reaction solution that has completed the crosslinking reaction in the above step (3), add 8 parts of octenyl succi...

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PUM

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Abstract

The invention discloses a preparation method of composite modified starch. The preparation method comprises the following steps: (1) blending a starch slurry: uniformly stirring water, an expansion inhibitor and native starch to obtain the starch slurry; (2) performing an etherification reaction: adding an etherifying agent to carry out the etherification reaction; (3) performing a crosslinking reaction: adding a crosslinking agent, and carrying out the reaction to reach a desired viscosity; (4) adjusting the pH value of a reaction solution obtained after the crosslinking reaction in step (3)with an inorganic acid solution, adding an esterification agent, carrying out a reaction for 3 h, and then terminating the reaction to obtain the composite modified starch; ad (5) washing and dehydrating the composite modified starch prepared in step (4), and carrying out drum drying to obtain the product. The composite modified starch of the invention is obtained by etherification, the crosslinking reaction and the esterification reaction of the native starch, and the single product can meet the application requirements without being combined with other starches. The preparation method of thecomposite modified starch of the invention has the advantages of easily controlled process conditions, easiness in realization of large-scale industrial production, easiness in operation, and strongpracticability.

Description

technical field [0001] The invention relates to the field of modified starch, in particular to a composite modified starch and a preparation method thereof. Background technique [0002] At present, starch sodium octenyl succinate is cooked or pregelatinized starch obtained by esterification of starch and octenyl succinic anhydride, followed by enzyme treatment, dextrinization, acid treatment, and bleaching. Sodium starch octenyl succinate has a relatively large molecular weight, and can form a high-strength film at the oil-water interface, which can stabilize oil-in-water emulsions, has excellent emulsifying properties, and can be widely used in food, medicine, etc. Industry as emulsifier, stabilizer and thickener. Most of the products on the market are low-viscosity sodium starch octenyl succinate (also known as pure gum), which is soluble in cold water and has excellent free flow and water repellency. It is generally used for emulsification and thickening of soft drinks ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B31/16C08B31/00
CPCC08B31/006C08B31/16
Inventor 张淑芬吴宗帅吴磊黄亚明高丹阳岳双胡艳灵徐慧敏张永付华杰
Owner HENAN HENGRUI STARCH TECH CO LTD
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