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
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[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...
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[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...
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[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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