Preparation method of crosslinked-acetylated-octenyl succinic acid ester ternary composite modified starch

A technology of octenyl succinate and ternary compounding, which is applied in the field of starch modification, can solve the problems of application limitations, modified starch products cannot meet the requirements, etc., achieve high peak viscosity, strong gel type, and improve pasting properties Effect

Inactive Publication Date: 2013-10-02
甘肃圣大方舟马铃薯变性淀粉有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the modern industry adopting new technologies, new processes, and new equipment, a single modified starch product cannot meet the requirements, which greatly restricts its application

Method used

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  • Preparation method of crosslinked-acetylated-octenyl succinic acid ester ternary composite modified starch
  • Preparation method of crosslinked-acetylated-octenyl succinic acid ester ternary composite modified starch

Examples

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Effect test

Embodiment 1

[0034] A kind of preparation method of composite modified starch, this method is raw material with potato starch, adopts wet method to prepare cross-linking-acetylation-octenyl succinate ternary composite modified starch, and its specific steps are as follows:

[0035] Step 1: 1000kg of potato starch and water are mixed into starch milk with a concentration of 38% by mass, adding 10kg of sodium chloride, adjusting the pH value to 11.0 with a concentration of 3% by mass of sodium hydroxide solution, and raising the temperature to 25°C ;

[0036] Step 2: add 0.15 kg of phosphorus oxychloride, react for 2 hours, add hydrochloric acid with a concentration of 5% by mass to adjust the pH value to 8.5;

[0037] Step 3: Add 60kg of mixed acid anhydride, which is formed by mixing octenyl succinic anhydride and acetic anhydride in a mass ratio of 1:5, and maintain the pH of the system with a sodium hydroxide solution with a concentration of 3% by mass The pH value is 8.5, react for 1 h...

Embodiment 2

[0040] A preparation method of composite modified starch, the method uses tapioca starch as raw material, adopts wet method to prepare cross-linking-acetylation-octenyl succinate ternary composite modified starch, and its specific steps are as follows:

[0041] Step 1: 1000kg tapioca starch and water are made into starch milk with a concentration of 40% by mass, add 5kg of sodium chloride, adjust the pH value to 11.5 with a concentration of 3% by mass of sodium hydroxide solution, and heat up to 25°C .

[0042] Step 2: Add 0.10 kg of phosphorus oxychloride, react for 2.5 hours, and add hydrochloric acid solution with a concentration of 5% by mass to adjust the pH value to 9.0.

[0043] Step 3: Add 50kg of mixed acid anhydride, which is formed by mixing octenyl succinic anhydride and acetic anhydride in a mass ratio of 1:4, and maintain the pH value with a sodium hydroxide solution with a concentration of 3% by mass 9.0, react for 1.5h, and adjust the pH value to 6.5 with ...

Embodiment 3

[0046] A preparation method of composite modified starch, the method uses waxy cornstarch as raw material, adopts wet method to prepare crosslinking-acetylation-octenyl succinate ternary composite modified starch, and its specific steps are as follows:

[0047] Step 1: 1000kg waxy cornstarch and water are made into the starch milk that concentration is 38% by mass fraction, add 15kg sodium chloride, be that the sodium hydroxide solution of mass fraction 4% is adjusted pH value to 11.0 with concentration, be warming up to 30°C;

[0048] Step 2: Add 0.20kg of phosphorus oxychloride, react for 1.5h, add hydrochloric acid solution with a concentration of 5% by mass to adjust the pH value to 9.0;

[0049] Step 3: Add 30kg of mixed acid anhydride, which is formed by mixing octenyl succinic anhydride and acetic anhydride in a ratio of 1:6 by mass, adjusted with a sodium hydroxide solution with a concentration of 3% by mass to maintain the system pH value to 9.5, react for 2 hours, a...

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Abstract

The invention discloses a preparation method of crosslinked-acetylated-octenyl succinic acid ester ternary composite modified starch. A gelatinization characteristic of the composite modified starch is further improved to obtain the modified starch with low gelatinization temperature, high peak viscosity, good viscosity stability, strong gel property, good refrigeration performance and high transparency. The preparation method of the starch comprises the steps of: performing crosslinking reaction on the starch, performing acetic esterification and octenyl succinic acid esterification, and obtaining the crosslinked-acetylated-octenyl succinic acid ester ternary composite modified starch after washing, drying, and sieving. The composite modified starch has the characteristics of crosslinked starch, acetylated starch and octenyl succinic acid ester starch simultaneously, and has the advantages of low gelatinization temperature, high peak viscosity, good viscosity stability, strong gel property, good refrigeration performance and high transparency, the gelatinization characteristic of the single-modified starch is improved, and an application performance of the starch is improved.

Description

technical field [0001] The invention belongs to the technical field of starch denaturation, and in particular relates to a preparation method of cross-linking-acetylation-octenyl succinate ternary composite modified starch. Background technique [0002] The research and production of modified starch in my country began in the 1980s. After more than 20 years of research, there are currently cross-linked starch, oxidized starch, acid-thinned starch, acetate, phosphate, octenyl succinate, carboxymethyl Starch, hydroxypropyl starch, cationic starch and other modified starches. However, in the modern industry adopting new technologies, new processes and new equipment, a single modified starch product cannot meet the requirements, which greatly limits its application. Multi-component modified starch refers to starch with two or more reactive groups connected to the same starch molecule. Due to the coordination of each group in the molecule, it has better performance, more prominen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B31/04C08B31/00
Inventor 何绍凯田映良马青斌崔芸
Owner 甘肃圣大方舟马铃薯变性淀粉有限公司
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