Method for preparing starch octenyl succinate anhydride

A technology of octenyl succinic acid and starch ester, which is applied in the field of modified starch, can solve the problems of high equipment requirements, partial reaction, and difficult removal of by-products, and achieve the effects of shortening reaction time, improving reaction efficiency, and high reaction efficiency

Active Publication Date: 2010-01-13
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

Although the dry method has a simple production process, low cost, high reaction efficiency, and less environmental pollution, the equipment requirements are relatively high, and there are difficulties in mixing starch and chemical reagents, uneven distribution of substituents, easy to cause local reactions, and difficult by-products. Remove other defects that affect product quality
The solvent method overcomes the shortcomings of low wet reaction efficiency, but it is costly and pollutes the environment, and because the product is produced in a medium such as acetone, it cannot be used in the food and cosmetic industries
[0005] In summ

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Dissolve 2.4ml of octenyl succinic anhydride in 9.6ml of absolute ethanol to prepare an octenyl succinic anhydride ethanol solution for subsequent use. The process is as follows:

[0021] (1), after mixing 156mI pure water and 244mI 95% ethanol, add 100g cornstarch (dry basis) under stirring state, keep stirring and container airtight;

[0022] (2) Stir the starch milk evenly, then heat up to 80°C, continue to stir and react at a speed of 40r / min for 30min, after the reaction is completed, centrifuge and collect the filtrate;

[0023] (3), after breaking the filter cake, place it in a dry process reactor, spray 15mI 5% sodium hydroxide solution, stir and mix evenly, then spray all the above-mentioned octenyl succinic anhydride ethanol liquid, stir for 10min, make it well mixed;

[0024] (4), spread the reaction mixture evenly with a thickness of 3-6mm, place it in a microwave reactor for heating reaction, set the microwave power to 600W, and irradiate for 5 minutes;

...

Embodiment 2

[0028] Dissolve 7.5ml of octenyl succinic anhydride in 31.5ml of absolute ethanol to prepare octenyl succinic anhydride ethanol for subsequent use. The process is as follows:

[0029] (1), after mixing 312mI pure water and 488mI 95% ethanol, add 200g potato starch (dry basis) under stirring state, keep stirring and container airtight;

[0030] (2) Stir the starch milk evenly, then heat up to 80°C, continue to stir and react at a speed of 40r / min for 30min, after the reaction is completed, centrifuge and collect the filtrate;

[0031] (3), after breaking the filter cake, place it in a dry process reactor, spray 19mI 10% sodium hydroxide solution, stir and mix evenly, then spray all the above-mentioned octenyl succinic anhydride ethanol liquid, stir for 15min, make it well mixed;

[0032] (4), spread the reaction mixture evenly with a thickness of 3-6mm, place it in a microwave reactor for heating reaction, set the microwave power to 800W, and the irradiation time is 8 minutes;...

Embodiment 3

[0036] Dissolve 25ml of octenyl succinic anhydride in 100ml of absolute ethanol to prepare an octenyl succinic anhydride ethanol solution for subsequent use. The process is as follows:

[0037] (1), after mixing 780mI pure water and 1220mI 95% ethanol, add 500g wheat starch (dry basis) under stirring state, keep stirring and container airtight;

[0038] (2) Stir the starch milk evenly, then heat up to 80°C, continue to stir and react at a speed of 40r / min for 30min, after the reaction is completed, centrifuge and collect the filtrate;

[0039] (3), after breaking the filter cake, place it in a dry process reactor, spray 28mI 10% sodium hydroxide solution, stir and mix evenly, then spray all the above-mentioned octenyl succinic anhydride ethanol liquid, stir for 25min, make it well mixed;

[0040] (4), spread the reaction mixture evenly with a thickness of 3-6mm, place it in a microwave reactor for heating reaction, set the microwave power to 900W, and irradiate for 8 minutes;...

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PUM

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Abstract

The invention discloses a method for preparing ocentyl succinic starch ester, which uses non-crystallization granule state starch as a basis and a microwave method as a core, and combines a part of processes of a drying method and a solvent method. The method comprises the following steps: (1) mixing a certain amount of pure water with 95 percent of ethanol; adding the starch at a stirring state, keeping stirring and keeping a reaction container to be obturated; (2) maintaining the temperature of a reaction system, keeping certain speed and stirring to react for several minutes; (3) removing the ethanol, crushing a filter cake, spraying a sodium hydroxide solution to the filter cake, evenly stirring, again spraying an octenyl succinic anhydride ethanol liquid to the filter cake, and evenly mixing; (4) evenly spreading a reaction mixture and placing the reaction mixture in a microwave oven to carry out esterification; and (5) washing with ethanol solution, filtering, drying, screening and packaging to prepare the ocentyl succinic starch ester. The invention has the advantages of high reaction efficiency, short reaction period and low reaction energy consumption.

Description

technical field [0001] The invention belongs to the technical field of modified starch, and in particular relates to a method for preparing starch octenyl succinate through partial processes of amorphous granular state pretreatment combined with microwave method, dry method and solvent method. Background technique [0002] With the rapid development of industry and science and technology, among many starch products, modified starch occupies a very important position and is the main way to broaden the application of starch. Modified starch refers to the use of physical, chemical or biological enzyme preparation methods to cut off molecules, rearrange or introduce functional groups into starch molecules to enhance certain qualities of the original starch or introduce some characteristics that the original starch does not have, so as to adapt to modern industry. Starch derivatives prepared for higher requirements on starch quality. As a green biological substrate, modified sta...

Claims

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Application Information

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IPC IPC(8): C08B31/04
Inventor 田映良孙红霞孙兰弟马青斌
Owner 甘肃圣大方舟马铃薯变性淀粉有限公司
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