Technique for producing low viscosity octenylsuccinate starch by oxidation process

An octenyl succinic acid and low-viscosity technology, which is applied in the field of starch processing, can solve the problems of affecting the product use effect, poor paste liquid transparency, dark product color, etc., and achieve weakened aging performance, high transparency, and high whiteness. Effect

Inactive Publication Date: 2009-04-15
诸城兴贸玉米开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the methods of first acidifying starch and then esterifying starch, or enzymolyzing starch and then esterifying starch are often used for production, but the products produced by these two methods have many defects, such as enzyme preparations in enzymatic hydrolysis products. With a certain color, it is not easy to come out when w

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0016] Example 1

[0017] 500kg absolutely dry waxy rice starch is joined in the reaction vessel, and the reaction vessel is generally a reaction tank, (the described absolutely dry waxy rice starch is the quality that the waxy rice starch of moisture is converted into the starch that does not contain moisture, Same below), in reaction vessel, waxy rice starch and water are made into 1315kg starch milk, then be warming up to between 34-38 ℃, add mass concentration and be 1.8% sodium hydroxide solution to adjust the pH value of starch milk at 9.3 -9.7 between. Then in starch milk, add 200kg of sodium hypochlorite to carry out oxidation reaction 8 hours, the amount of this sodium hypochlorite is to be that 11% sodium hypochlorite is converted into the amount of the sodium hypochlorite of 100% purity by mass concentration, in the reaction process, keep above-mentioned pH value and reaction temperature. Add 0.5kg of sodium metabisulfite to the starch milk after the oxidation reac...

Example Embodiment

[0018] Example 2

[0019] 500kg absolutely dry waxy rice starch is added in the reaction vessel, in the reaction vessel, the waxy rice starch and water are made into 1250kg starch milk, then be warming up to between 34-38 ℃, adding mass concentration is 2% of hydrogen peroxide. The sodium solution adjusts the pH of the starch milk between 9.3-9.7. Then in starch milk, add 218.2kg of sodium hypochlorite and carry out oxidation reaction 10 hours, the amount of this sodium hypochlorite is to be the amount of the sodium hypochlorite that mass concentration is 11% sodium hypochlorite conversion to 100% purity, keep above-mentioned pH value and temperature of reaction in the reaction process. Add 0.75kg of sodium metabisulfite to the starch milk after the oxidation reaction to carry out the reduction reaction. During the reaction, add a 3% hydrochloric acid solution to adjust the pH value of the starch milk between 8.5 and 9.0, and cool down to 28-31 ° C. , the reaction was 9.5 hou...

Example Embodiment

[0020] Example 3

[0021] 500kg absolutely dry waxy rice starch is added in the reaction vessel, in the reaction vessel, the waxy rice starch and water are made into 1190kg starch milk, then be warming up to between 34-38 ℃, adding mass concentration is 2.1% hydroxide The sodium solution adjusts the pH of the starch milk between 9.3-9.7. Then in starch milk, add 236.36kg of sodium hypochlorite and carry out oxidation reaction 12 hours, the amount of this sodium hypochlorite is to be that 11% sodium hypochlorite is converted into the amount of the sodium hypochlorite of 100% purity by mass concentration, in the reaction process, keep above-mentioned pH value and reaction temperature. 1kg of sodium metabisulfite was added to the starch milk after the oxidation reaction to carry out the reduction reaction. During the reaction, a 3.2% hydrochloric acid solution was added to adjust the pH value of the starch milk between 8.5 and 9.0, and the temperature was lowered to 28-31 ° C. T...

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PUM

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Abstract

The invention discloses a technique for producing octenyl succinate starch ester with low viscosity by an oxidation method, which comprises steps as follows: waxy rice starch and water are prepared to be starch milk in a reaction vessel, then the starch milk is heated to 34 DEG C to 38 DEG C, and a sodium hydroxide solution is added for adjusting the PH value between 9.3 and 9.7; sodium hypochlorite is added to carry out oxidation reaction, and the PH value and the reaction temperature are kept; sodium pyrosulfite is added to carry out reduction reaction, and a hydrochloride solution is added in the reaction process to adjust the PH value of the starch milk between 8.5 and 9.0, and the temperature is cooled to 28 DEG C to 31 DEG C, and then octenyl succinic anhydride with 2 percent to 3 percent of the total mass of absolute dry starch is added to carry out esterification reaction; and after the esterification reaction, the hydrochloride solution is added to neutralize the PH value of the starch milk between 5.5 and 6.5, and the finished product can be obtained by washing and drying the neutralized starch milk. By adopting the technique for producing the octenyl succinate starch ester with low viscosity by the oxidation method, the product is high in esterification reaction efficiency, good in emulsifying properties and high in product quality.

Description

technical field [0001] The invention belongs to the technical field of starch processing, in particular to a process for producing low-viscosity starch octenyl succinate by oxidation. Background technique [0002] Starch octenyl succinate is a kind of starch ester with hydrophobic properties, which has the characteristics of high emulsification and good stability. It is widely used in oil plant embedding industry, embedding agent for microencapsulated products, and fat substitute . However, at present, the methods of first acidifying starch and then esterifying starch, or enzymolyzing starch and then esterifying starch are often used for production, but the products produced by these two methods have many defects, such as enzyme preparations in enzymatic hydrolysis products. With a certain color, it is not easy to come out when washing, which makes the product darker in color, poor in whiteness, poor in transparency of paste liquid, low in hydrophilicity, poor in stability,...

Claims

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Application Information

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IPC IPC(8): C08B31/04
Inventor 邱立忠卞希良孙纯锐宋瑞江夏凤清
Owner 诸城兴贸玉米开发有限公司
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