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Preparation method for low-viscosity sodium carboxymethyl cellulose for foodstuff

A technology of sodium carboxymethyl cellulose and low viscosity, which is applied in the field of polymer chemistry, can solve the problems of poor performance of cellulose pulp or wood pulp cellulose, difficult post-processing technology, and high price of isopropanol, and achieves the goal of preparing The method is simple, the effect of thickening and improving the taste of food, and low viscosity

Inactive Publication Date: 2009-10-07
上海长光企业发展有限公司
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  • Application Information

AI Technical Summary

Benefits of technology

This new process involves creating an improved type of substance called Refine Cotton Cellulose (RC), by chemically modifying natural fibers like cotton fiber through processes involving solvent extraction or dissolving them out from their native state without damaging its properties. These modifications help increase stability during storage over longer periods at room temperature. By cutting down these modified materials into small pieces for better mixing, we aimed towards making more efficient methods of producing RC products.

Problems solved by technology

This patented technical problem addressed by this patents relating to producing sodium carbomethoxycelluco (CMC) that combines these properties together for industrial purposes like serving as a special type of ingredient called catheter gum. However, current methods require expensive starting chemical agents which increase costs compared to more efficient processes involving reactants at lower concentrations.

Method used

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  • Preparation method for low-viscosity sodium carboxymethyl cellulose for foodstuff

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Embodiment 1

[0019] Under the reaction condition of 20 ℃, the solvent mixture of 126 parts of 52% sodium hydroxide aqueous solution and 240 parts of 92% (volume) ethanol is mixed with 120 parts of flake-shaped refined cotton cellulose (average degree of polymerization is 2000) in 10 minutes ) into the alkalization machine evenly at the same time, and alkalization reaction under stirring for 50 minutes, uniformly added 113 parts of 65% ethanol solution of monochloroacetic acid within 50 minutes, and slowly heated up to 75 ° C and stirred for etherification reaction for 100 minutes; Add 8 parts of 15% hydrochloric acid to neutralize excess sodium hydroxide, wash with 2800 parts of 76% (volume) ethanol aqueous solution for 45 minutes, add 6 parts of 27.5% hydrogen peroxide aqueous solution while washing, centrifuge to separate ethanol aqueous solution, centrifuge After the material was washed again with 4000 parts of 70% (volume) ethanol aqueous solution for 35 minutes, 12 parts of 27.5% hydro...

Embodiment 2

[0024] Under the reaction condition of 40 ℃, with 137 parts of 48% sodium hydroxide aqueous solution and the solvent mixture of 300 parts of 96% (volume) ethanol in 20 minutes with 120 parts of flake-shaped refined cotton cellulose (average degree of polymerization is 500 ) into the alkalization machine evenly at the same time, and alkalization reaction under stirring for 80 minutes, uniformly added 102 parts of 75% ethanol solution of monochloroacetic acid within 20 minutes, and slowly warming up to 80° C. and stirring for etherification reaction for 50 minutes; Add 2 parts of 25% hydrochloric acid to neutralize excess sodium hydroxide, wash with 3200 parts of 75% (volume) ethanol aqueous solution for 40 minutes, add 10 parts of 27.5% hydrogen peroxide aqueous solution at the same time, centrifuge to separate ethanol aqueous solution, centrifuge After the material was washed again with 3800 parts of 72% (volume) ethanol aqueous solution for 45 minutes, 12 parts of 27.5% hydrog...

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Abstract

The invention relates to a preparation method for low-viscosity sodium carboxymethyl cellulose for foodstuff. Under the conditions of proper temperature and stirring, refined gossypin which is cut into pieces and ethanol solution of sodium hydroxide are basified in a kneader to form soda cellulose; under the conditions of proper temperature and stirring, ethanol solution of monochloroacetic acid is added for etherification reaction, hydrochloric acid solution is dripped to neutralize residual sodium hydroxide in the system, and reaction material is rinsed by two steps by ethanol and aqueous hydrogen peroxide solution; and finally, the sodium carboxymethyl cellulose can be obtained after the steps of separation, drying and pulverization are accomplished. The preparation method has the advantages of simplicity, low cost, high yield and convenient operation, the prepared sodium carboxymethyl cellulose is white or yellowish powder, the viscosity is low and ranges from 22 to 50Mpa.s, and the purity is high and is no less than 99.0 percent; and the product has favorable acid resistance, can be widely applied to various foodstuff and beverages to be used as emulsified and suspended rotproof and fresh-keeping stabilizing agent to play the role of thickening, and can obviously improve the mouthfeel of the foodstuff.

Description

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Claims

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Application Information

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Owner 上海长光企业发展有限公司
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