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A kind of food-grade cellulose gum and preparation method thereof

A cellulose glue, food-grade technology, applied in the field of food-grade cellulose glue and its preparation, can solve the problem of fast viscosity reduction

Active Publication Date: 2021-08-20
上海长光企业发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defect that the existing food-grade cellulose glue has a fast viscosity reduction speed during storage, and to provide a preparation method of food-grade cellulose glue, so that it will not produce Larger viscosity changes, more convenient and more stable characteristics in food and beverage applications

Method used

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  • A kind of food-grade cellulose gum and preparation method thereof
  • A kind of food-grade cellulose gum and preparation method thereof
  • A kind of food-grade cellulose gum and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Under stirring conditions, 1000g of the dissolving slurry with a degree of polymerization of 1920 is added to 940g of a mass concentration of 35% sodium hydroxide solution, and the temperature is controlled at 25-30°C for stirring and pretreatment for 80 minutes. The finished alkali cellulose is squeezed and filtered, and the treated alkali cellulose solid is left.

[0027] (2) the alkali cellulose that has been processed is 1708g, joins and puts 772g mass concentration and is that 52% sodium hydroxide aqueous solution and 2500g volume concentration are in the kneader of the mixed liquor of 92% alcohol aqueous solution, carry out stirring alkalization, temperature Control the temperature at 20-25°C, and control the alkalization time for 50 minutes.

[0028] (3) After the alkalization is finished, add 1000 g of chloroacetic acid alcohol solution with a mass concentration of 75%, and drop it in 15 minutes. The material is taken out.

[0029] (4) put the cooled mater...

Embodiment 2

[0033] (1) Under stirring conditions, 1000g of the dissolving slurry with a degree of polymerization of 2050 is added to 1095g of a mass concentration of 30% sodium hydroxide solution, and the temperature is controlled at 22-27°C for stirring and pretreatment for 50min. The finished alkali cellulose is squeezed and filtered, and the treated alkali cellulose solid is left.

[0034] (2) the alkali cellulose handled is 1750g, joins and puts 803g mass concentration and is that 50% sodium hydroxide aqueous solution and 2800g volume concentration are in the kneader of the mixed liquor of 94% alcohol aqueous solution, carry out stirring alkalization, temperature Control the temperature at 22-26°C, and control the alkalization time for 30 minutes.

[0035] (3) After the alkalization is finished, add 1000 g of chloroacetic acid alcohol solution with a mass concentration of 75%, and drop it in 30 minutes. The material is taken out.

[0036] (4) put the cooled material into the alcohol...

Embodiment 3

[0040] (1) Under stirring conditions, 1000g of the dissolving slurry with a degree of polymerization of 1810 is added to 1310g of a mass concentration of 25% sodium hydroxide solution, and the temperature is controlled at 15-20°C for agitation pretreatment for 120min, and the pretreatment The finished alkali cellulose is squeezed and filtered, and the treated alkali cellulose solid is left.

[0041] (2) the alkali cellulose that has been processed is 1800g, joins and puts 892g mass concentration and is that 45% sodium hydroxide aqueous solution and 3000g volume concentration are in the kneader of the mixed liquor of 93% alcohol aqueous solution, carry out stirring alkalization, temperature Control the temperature at 27-31°C, and control the alkalization time for 60 minutes.

[0042] (3) After the alkalization is finished, add 1000 g of chloroacetic acid alcohol solution with a mass concentration of 75%, and drop it in 20 minutes. The material is taken out.

[0043] (4) Put the...

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Abstract

The invention discloses a food-grade cellulose gum and a preparation method thereof. The method comprises the following steps: (1) breaking the dissolving pulp with a degree of polymerization ≥ 1800 into flakes smaller than 2cm×2cm and then mixing it with a dilute alkali aqueous solution to obtain uniform alkali cellulose; (2) removing the alkali cellulose described in step (1). Dilute alkali aqueous solution in alkali cellulose, so that the total weight gain of the alkali cellulose relative to the dissolving pulp is 70%-85%, after the alkali cellulose is alkalized and etherified, the pH is adjusted to 6.5-8.5, Obtaining the intermediate material; (3) drying the intermediate material in step (2) to obtain food-grade cellulose gum. The food-grade cellulose gum prepared by the method of the invention has a viscosity change rate of ≤5% in an environment with a pH value of 3.5-8.5, and can be placed for 5 days with a viscosity decrease rate of ≤5%.

Description

technical field [0001] The invention relates to a food-grade cellulose gum and a preparation method thereof. Background technique [0002] The food-grade cellulose gum on the market today, also known as CMC (sodium carboxymethyl cellulose), has always had the problems of long dissolution time and poor viscosity stability after dissolution during use, especially during storage and stirring speed. Viscosity changes significantly when changing, and cannot be stored stably. [0003] How to improve the solubility and stability of food-grade CMC is a major problem at present. The solubilization modification of industrial-grade CMC mainly adopts the addition of fast solvent or cross-linking modification to achieve the effect of rapid dissolution or rapid dispersion, but in food The above method cannot be used in high-grade CMC products. Therefore, for users, food-grade CMC is generally used to dissolve naturally, but it takes a long time for CMC to completely dissolve, and it is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B11/12C08B1/08
Inventor 倪志青朱宏彬丁长光张强钱文树
Owner 上海长光企业发展有限公司
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