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Production process of octenyl succinic anhydride modified starch (OSA Starch)

A technology of octenyl succinic acid and octenyl succinic acid anhydride is applied in the technical field of producing octenyl succinate starch ester, and can solve the problem of high concentration of sodium chloride, reaction rate, and yield of octenyl succinate starch ester Substitution degree influence and other issues, to achieve the effect of reducing production costs

Inactive Publication Date: 2013-12-11
GUANGXI GAOYUAN STARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Although the recovery of unreacted octenyl succinic anhydride can be realized in this technical scheme, the concentration of sodium chloride in the octenyl succinic anhydride solution recovered by it is high, especially after several cycles, after it is recycled It will affect the reaction rate and yield of the esterification reaction between starch milk and octenyl succinic anhydride and the degree of substitution of octenyl succinic acid starch ester

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Take a certain amount of starch, ethanol and water according to the volume ratio of 4: 1 to prepare the configured solvent to form a starch emulsion, the mass fraction of starch in the starch emulsion is 40%; pump the starch emulsion into the ultrasonic reactor, and then add Octenyl succinic anhydride, sodium hydroxide solution and ethanol aqueous solution, the amount of octenyl succinic anhydride added is 15% of the starch mass; the pH of the whole mixing system is 8.0, start the reactor ultrasonic mixing to carry out the esterification reaction, control the ultrasonic The power is 200W, and the time is 2.0h;

[0031] After the esterification reaction, add hydrochloric acid to the reaction product to neutralize and adjust the pH. After neutralizing and adjusting the pH, the pH of the mixed solution is 6.2; reclaim after the times to obtain the washing liquid, combine the washing liquid and the filtrate to carry out vacuum distillation and separate ethanol, and reclaim ...

Embodiment 2

[0035] Get a certain amount of starch and the alcohol solution recovered in Example 1 and water according to the volume ratio of 4: 1. The solvent configured is configured into starch emulsion, and the mass fraction of starch in the starch emulsion is 38%; the starch emulsion is pumped to In the ultrasonic reactor, then add raw material octenyl succinic anhydride and the octenyl succinic anhydride, sodium hydroxide solution and aqueous ethanol solution recovered in Example 1, the total addition of octenyl succinic anhydride is 12% of the starch quality; The pH of the whole mixing system is 7.5, and the reaction kettle is started for ultrasonic mixing to carry out the esterification reaction, and the ultrasonic power is controlled to 200W, and the time is 2.0h;

[0036] After the esterification reaction, add hydrochloric acid to the reaction product to neutralize and adjust the pH. After neutralizing and adjusting the pH, the pH of the mixed solution is 6.0; reclaim after the t...

Embodiment 3

[0040] Get a certain amount of starch and the alcohol solution recovered in Example 2 and water according to the volume ratio of 4: 1. The solvent configured into starch emulsion is configured into starch emulsion, and the mass fraction of starch in the starch emulsion is 38%; the starch emulsion is pumped to In the ultrasonic reactor, then add raw material octenyl succinic anhydride and the octenyl succinic anhydride, sodium hydroxide solution and aqueous ethanol solution recovered in Example 2, the total addition of octenyl succinic anhydride is 14% of the starch quality; The PH of the whole mixing system is 7.8, start the reactor for ultrasonic mixing to carry out the esterification reaction, control the ultrasonic power to 200W, and the time is 2.0h;

[0041] After the esterification reaction, add hydrochloric acid to the reaction product to neutralize and adjust the pH. After neutralizing and adjusting the pH, the pH of the mixed solution is 6.0; reclaim after the times to ...

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PUM

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Abstract

The invention discloses a production process of octenyl succinic anhydride modified starch (OSA Starch). The production process comprises the steps as follows: after esterification, performing filtration and obtaining the OSA starch and a filtrate; rinsing, recovering and obtaining a washes; combining the washes and the filtrate, separating alcohol via reduced pressure distillation, and recovering and obtaining a micro-saturated concentrated salt solution; cooling and filtering the micro-saturated concentrated salt solution; performing separation and obtaining octenylsuccinic anhydride and a salt solution; adding ammonium hydrogencarbonate into the salt solution for reaction; performing filtration, recovering, and obtaining dicarbonate and a salmak solution; performing reaction of the ammonium hydrogencarbonate and sodium hydroxide and obtaining a soda solution; performing the reaction of the soda solution and the calcium hydroxide, filtering, and obtaining a sodium hydroxide solution. Therefore, the sodium chloride of the filtrate obtained after the esterification is separated; besides, the prepared sodium hydroxide can be reused as a pH regulator of the esterification, so as to lower the production cost of the OSA starch.

Description

technical field [0001] The invention relates to the field of preparation of starch octenyl succinate, in particular to a process for producing starch octenyl succinate. Background technique [0002] Sodium starch octenyl succinate, also known as starch octenyl succinate and alkenyl succinate esterified starch, was originally successfully developed by Caldwell and Wurzburg in the United States. Alkenyl succinic acid esterified starch is a large class of modified starch, but only one type is allowed to be used in the food industry, that is, octenyl succinic acid starch ester, the trade name is pure gum, octenyl succinic acid starch ester is a A highly safe emulsifying thickener. It is different from any kind of traditional edible modified starch, especially it plays an important role in the oil-in-water emulsion and has special functions, so it is widely used in various foods, such as: emulsified essence, microcapsule powder products , soft drinks, flavored salad oil, yogurt...

Claims

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Application Information

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IPC IPC(8): C08B31/04
Inventor 张晋滔
Owner GUANGXI GAOYUAN STARCH
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