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Production and processing technology for hydroxypropyl starch

A technology of hydroxypropyl starch and processing technology, applied in the field of hydroxypropyl starch production, can solve the problems of weakening the hydrogen bond strength inside the starch granule structure by hydrophilic properties, unfavorable processing and production of hydroxypropyl starch, good freeze-thaw stability and the like , to achieve the effect of low cost, low production cost and low equipment requirements

Pending Publication Date: 2022-04-26
江苏思颖柏霖生物科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, the hydroxypropyl group will produce a steric hindrance effect, preventing the aggregation and crystallization of starch chains; on the other hand, the hydrophilic property of the hydroxypropyl group weakens the internal hydrogen bond strength of the starch granule structure, making it easy to swell and gelatinize. Starch paste has high transparency, strong fluidity, weak retrogradation, high stability, and good freeze-thaw stability. The current production methods of hydroxypropyl starch are various and complicated, which is not conducive to the processing and production of hydroxypropyl starch. Therefore, we propose A kind of processing technology for the production of hydroxypropyl starch is used to solve the above problems

Method used

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  • Production and processing technology for hydroxypropyl starch

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Effect test

Embodiment 1

[0022] Embodiment 1: as figure 1 As shown, the present invention provides a kind of processing technology for the production of hydroxypropyl starch, comprising the steps of:

[0023] S1. Add food-grade starch and anhydrous sodium sulfate into the reaction kettle, stir and mix evenly, then add an appropriate amount of water and mix evenly to form a starch emulsion;

[0024] S2, adding sodium hydroxide solution to the starch emulsion, then adding propylene oxide, under stirring condition, airtight heating reaction;

[0025] S3, after the reaction is over, add dilute sulfuric acid to adjust the pH of the reaction solution to 6.5-8.0 after decompression distillation to remove excess propylene oxide;

[0026] S4, release the reaction solution, filter, wash and separate the solid and liquid, then add water for beating;

[0027] S5, putting the starch slurry into the reactor, adding biological enzymes, and heating for pregelatinization;

[0028] S6. After the pregelatinization is...

Embodiment 2

[0038] Embodiment 2: as figure 1 As shown, the present invention provides a kind of processing technology for the production of hydroxypropyl starch, comprising the steps of:

[0039] S1. Add food-grade starch and anhydrous sodium sulfate into the reaction kettle, stir and mix evenly, then add an appropriate amount of water and mix evenly to form a starch emulsion;

[0040] S2, adding sodium hydroxide solution to the starch emulsion, then adding propylene oxide, under stirring condition, airtight heating reaction;

[0041] S3, after the reaction is completed and the excess propylene oxide is removed by distillation under reduced pressure, dilute sulfuric acid is added to adjust the pH of the reaction solution to 6.5-8.0;

[0042] S4, release the reaction solution, filter, wash and separate the solid and liquid, then add water for beating;

[0043] S5, putting the starch slurry into the reactor, adding biological enzymes, and heating for pregelatinization;

[0044] S6. After...

Embodiment 3

[0054] Embodiment 3: as figure 1 As shown, the present invention provides a kind of processing technology for the production of hydroxypropyl starch, comprising the steps of:

[0055] S1. Add food-grade starch and anhydrous sodium sulfate into the reaction kettle, stir and mix evenly, then add an appropriate amount of water and mix evenly to form a starch emulsion;

[0056] S2, adding sodium hydroxide solution to the starch emulsion, then adding propylene oxide, under stirring condition, airtight heating reaction;

[0057] S3, after the reaction is finished, add dilute sulfuric acid to adjust the pH of the reaction solution to 6.5-8.0;

[0058] S4, release the reaction solution, filter, wash and separate the solid and liquid, then add water for beating;

[0059] S5, putting the starch slurry into the reactor, adding biological enzymes, and heating for pregelatinization;

[0060] S6. After the pregelatinization is completed, it is dried, crushed, packaged, and finally transf...

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Abstract

The invention discloses a hydroxypropyl starch production and processing technology, and belongs to the technical field of hydroxypropyl starch production, and the hydroxypropyl starch production and processing technology comprises the following steps: adding food-grade starch and anhydrous sodium sulfate into a reaction kettle, uniformly stirring and mixing, adding a proper amount of water, and uniformly mixing to form a starch emulsion; adding a sodium hydroxide solution into the starch emulsion, then adding epoxypropane, and carrying out closed heating reaction; after the reaction is finished, carrying out reduced pressure distillation to remove redundant epoxypropane, and adding dilute sulphuric acid to adjust the pH value of the reaction liquid to 6.5-8.0; discharging reaction liquid, filtering, washing, performing solid-liquid separation, and adding water for pulping; putting the starch slurry into a reaction kettle, and heating for pregelatinization; and after the pregelatinization is finished, drying, crushing, packaging, and finally transferring to a finished product warehouse. According to the present invention, the hydroxypropyl starch is obtained by adding the epoxypropane under the alkaline condition to carry out the reaction, washing the product and carrying out the solid-liquid separation, the operation can be achieved under the normal pressure condition without adding other solvents, the operation is simple, the equipment requirement is low, and the production cost is low.

Description

technical field [0001] The invention relates to the technical field of hydroxypropyl starch production, in particular to a production and processing technology for hydroxypropyl starch. Background technique [0002] Starch is one of the most productive natural polymers in nature and has a very wide range of industrial uses. Starch consists of two types of amylose and amylopectin. Amylose contains several hundred glucose units, and amylopectin contains several thousand glucose units. Hydroxypropyl starch is a kind of modified starch which is widely used. The introduction of a certain amount of hydroxypropyl groups to starch molecules will effectively improve the properties of starch paste. On the one hand, the hydroxypropyl group will produce a steric hindrance effect, preventing the aggregation and crystallization of starch chains; on the other hand, the hydrophilic property of the hydroxypropyl group weakens the internal hydrogen bond strength of the starch granule struc...

Claims

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Application Information

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IPC IPC(8): C08B31/12
CPCC08B31/12
Inventor 陈伟崇周春红詹吉兴
Owner 江苏思颖柏霖生物科技有限公司
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