A kind of acid heat degradation preparation method of low-viscosity octenyl succinic acid starch ester

A technology of octenyl succinic acid and starch ester, applied in the field of octenyl succinic acid starch ester products, can solve the problems of limited application, high production technical requirements, large quality gap, etc., and achieves the effect of good use effect.

Active Publication Date: 2017-04-12
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of octenyl succinic acid starch ester is a compound modified starch product. Different degradation methods and degrees can produce a series of products with different qualities. There are many varieties. The manufacturing steps and processes are relatively complicated, and the requirements for production technology are high. Domestic The quality of the product is far behind that of foreign countries
[0007] After the starch is esterified with octenyl succinic anhydride, a long carbon chain is introduced, which increases the paste viscosity of the esterified starch, and the modified starch has a high viscosity, which limits its application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Sizing and esterification: 1000 dry weight parts of corn starch are slurried with water, the milk concentration is 40.0% (w / w), the temperature is raised to 50°C, and the sodium carbonate solution with a concentration of 10% (w / w) Adjust the pH of starch milk to 9.5, keep the temperature and pH of starch milk, add 1% (to starch) octenyl succinic anhydride for esterification reaction for 6 hours, and neutralize starch with 10% (v / v) hydrochloric acid solution The pH of the milk is to 6.0.

[0035] (2) De-liquid washing, sizing and acid-adjusting, and acidizing reactions: the neutralized starch emulsion is used to remove the waste liquid with a filter press, washed with water until the conductivity of the washing liquid is not greater than 100 μs / cm, and the filter cake is sized with water. The pH of the emulsion was adjusted to 2.0 with a concentration of 10% (w / w) oxalic acid solution, and the dry solid mass concentration of the emulsion was 25% (w / w).

[0036] (3)...

Embodiment 2

[0040] (1) Sizing and esterification: 1,000 dry weight parts of corn starch were slurried with water, the milk concentration was 42.0% (w / w), the temperature was raised to 45°C, and the concentration of 10% (w / w) sodium carbonate solution Adjust the pH of starch milk to 9.0, keep the temperature and pH of starch milk, add 3% (to starch) octenyl succinic anhydride for esterification reaction for 14 hours, and neutralize starch with 10% (v / v) hydrochloric acid solution The pH of the milk is to 6.0.

[0041] (2) De-liquid washing, sizing and acid-adjusting, and acidizing reactions: the neutralized starch emulsion is used to remove the waste liquid with a filter press, washed with water until the conductivity of the washing liquid is not greater than 100 μs / cm, and the filter cake is sized with water. The pH of the emulsion was adjusted to 2.5 with a concentration of 10% (w / w) oxalic acid solution, and the dry solid mass concentration of the emulsion was 20% (w / w).

[0042] (3) C...

Embodiment 3

[0046] (1) Sizing and esterification: 1,000 dry weight parts of corn starch were slurried with water, the milk concentration was 42.0% (w / w), the temperature was raised to 45°C, and the concentration of 10% (w / w) sodium carbonate solution Adjust the pH of starch milk to 9.0, keep the temperature and pH of starch milk, add 3% (to starch) octenyl succinic anhydride for esterification reaction for 14 hours, and neutralize starch with 10% (v / v) hydrochloric acid solution The pH of the milk is to 6.0.

[0047] (2) De-liquid washing, sizing and acid-adjusting, and acidizing reactions: the neutralized starch emulsion is used to remove the waste liquid with a filter press, washed with water until the conductivity of the washing liquid is not greater than 100 μs / cm, and the filter cake is sized with water. The pH of the emulsion was adjusted to 2.5 with a concentration of 10% (w / w) oxalic acid solution, and the dry solid mass concentration of the emulsion was 20% (w / w).

[0048] (3) C...

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PUM

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Abstract

The invention discloses an acid-heat degradation preparation method of a low-viscosity water-soluble octenyl succinic anhydride modified starch product. The method comprises the following steps: raw starch is prepared into a slurry; alkaline liquid is added; under a starch gelatinization temperature, octenyl succinic anhydride is fed, and an esterification reaction is allowed for more than 8 hours; neutralization and liquid-removal are carried out; purified water is used for washing and refining; a filter cake is prepared into a slurry with water; the pH value is regulated by using an oxalic acid solution; an acid hydrolysis reaction is carried out; a high-temperature acid-heat treatment is carried out under continuous ejection under a temperature of 125-130 DEG C by using a hydrothermal device; laminar-flow thermal insulation is carried out; cooling is carried out; a saturated calcium hydroxide solution is added, or a calcium carbonate emulsion and a sodium carbonate solution are added; the mixture is stirred such that neutralization is carried out; active carbon is added; pressure filtration is carried out; the filtrate is concentrated under vacuum; fine filtration is carried out; spray drying is carried out; and the product is cooled and packaged. With the method, the low-viscosity water-soluble octenyl succinic anhydride modified starch product is obtained. The product is suitable to be used as an emulsifier of foods and daily chemicals, or as a microencapsulation material. With the method, the low-viscosity water-soluble octenyl succinic anhydride modified starch product can be produced, and good economical benefit can be achieved.

Description

technical field [0001] The invention relates to a process method of acid-heat degradation to prepare low-viscosity water-soluble starch octenyl succinate, which can be used as an emulsification stabilizer for food and daily chemical industry or as an embedding material for microcapsules. Background technique [0002] Starch alkenyl succinate is a kind of starch ester product obtained by esterification reaction of raw starch or starch derivatives with alkenyl succinic anhydrides containing carbon chains of different lengths under alkaline conditions. Alkenyl succinic anhydride Decenyl succinic anhydride, dodecenyl succinic anhydride and hexadecenyl succinic anhydride, currently only octenyl succinic anhydride is allowed to be used for food starch modification. [0003] Octenyl Succinic Anhydride Modified Starch (OSA-Starch for short) is a modified starch product developed by Caldwell and Wurzburg in the United States. It applied for a patent in 1953. The U.S. Food and Drug A...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B31/04
Inventor 黄立新杨博简淑贞陈宏彬王立亚
Owner SOUTH CHINA UNIV OF TECH
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