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Method for preparing colloidal microcrystalline cellulose (MCC)

A microcrystalline cellulose and colloidal technology, which is applied in the field of preparation of colloidal microcrystalline cellulose, can solve the problems of waste water pollution, high treatment pressure, and a large amount of waste water, and achieves good dispersion performance and suspension performance, and good thermal stability. and acid resistance, the effect of reducing the total cost of production

Inactive Publication Date: 2013-08-28
徐季亮 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

MCC products are generally produced by methods such as natural cellulose acid hydrolysis, enzymatic hydrolysis or acid-enzyme co-lysis. The corresponding production process generally has two major problems: limited product fineness and large amount of waste water pollution.
Due to the strong crystallinity of natural cellulose, acid enzymatic hydrolysis, or the production method of acid enzymatic hydrolysis combined with mechanical pulverization, is difficult to effectively reduce the particle size of cellulose. As a result, the average particle size of domestic MCC is generally above 20-30 μm. Difficult to enhance its economic and application value
The acid enzymatic hydrolysis process requires a large amount of water as a solvent, which will inevitably produce a large amount of waste water, seriously pollute the environment, and put a lot of pressure on governance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] Embodiment 1: earlier common food grade microcrystalline cellulose (particle diameter 30~40 μ m) is the raw material that 100 parts by weight, and the soft water that is 900 parts by weight are added to the high-shear emulsifier, start the shearing machine, slowly Slowly add the food grade sodium carboxymethyl cellulose product with parts by weight of 9, and the emulsification time is 30 minutes at normal temperature; For shearing, the pressure is controlled at 20MPa for the first time. The material sheared by the high-pressure homogenizer flows to the next high-shear emulsifier, and the material is transported to the high-pressure homogenizer by a screw pump for shearing. 50MPa, the material sheared by the high-pressure homogenizer flows to the next high-shear emulsifier, and is transported to the high-pressure homogenizer by a screw pump for shearing. The third control pressure is 100MPa, and it is sheared by the high-pressure homogenizer The final material flows to t...

Embodiment 2

[0010] Embodiment 2: first the raw material that ordinary food grade microcrystalline cellulose (30~40 μ m) of particle diameter is 100 parts by weight, and the soft water that is 1100 parts by weight are added to the high-shear emulsifier, start the shearing machine, slowly Slowly add the food grade sodium carboxymethyl cellulose product that parts by weight are 11, and the emulsification time is 35 minutes at normal temperature; For shearing, the pressure is controlled at 25MPa for the first time. The material sheared by the high-pressure homogenizer flows to the next high-shear emulsifier, and the material is transported to the high-pressure homogenizer by a screw pump for shearing. 60MPa, the material sheared by the high-pressure homogenizer flows to the next high-shear emulsifier, and is transported to the high-pressure homogenizer by a screw pump for shearing. The third control pressure is 120MPa, and it is sheared by the high-pressure homogenizer The final material flow...

Embodiment 3

[0012] Embodiment 3: earlier common food grade microcrystalline cellulose (particle diameter 30~40 μ m) is 100 parts by weight of raw materials, and the soft water that is 1250 parts by weight is added to the high-shear emulsifier, starts the shearing machine, slowly Slowly add the food-grade sodium carboxymethyl cellulose product that the parts by weight are 12, and the emulsification time is 40 minutes at normal temperature; For shearing, the pressure is controlled at 25MPa for the first time. The material sheared by the high-pressure homogenizer flows to the next high-shear emulsifier, and the material is transported to the high-pressure homogenizer by a screw pump for shearing. 70MPa, the material sheared by the high-pressure homogenizer flows to the next high-shear emulsifier, and is transported to the high-pressure homogenizer by a screw pump for shearing. The third control pressure is 140MPa, and it is sheared by the high-pressure homogenizer The final material flows to...

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Abstract

The invention discloses a method for preparing colloidal microcrystalline cellulose (MCC). Common food-grade MCC (with particle diameter 30 to 40mum) and sodium carboxymethyl cellulose (CMC) undergo dispersion, shear (the particle diameter is reduced through shear, and the MCC with the particle diameter less than 2mum is named as colloidal MCC) and spray drying to form a fine particle product. The obtained colloidal MCC product has good dispersion performance and suspension performance, and the aqueous solution of the product has the three-dimensional network structure suspension mechanism, has super thermal stability and acid resistance and can be used as an excellent suspension stabilizer in the industries of medicine, food and the like.

Description

technical field [0001] The preparation method of colloidal grade microcrystalline cellulose (MCC) of the present invention, its three-dimensional network structure has excellent thermal stability and acid resistance, belongs to the use of a kind of excellent suspension stabilizer of medicine and food field, especially a kind of Preparation method of colloidal grade microcrystalline cellulose (MCC). Background technique [0002] Microcrystalline cellulose (MCC for short) is a certain range of molecular weight ultrafine powder products produced by hydrolysis of natural cellulose. MCC has the functions of viscosity adjustment, promotion of gelation, stable suspension (suspension is good when the particle size is less than 2 μm), fat replacement, and anti-caking. It is a green additive with strong biocompatibility. It is used in medicine, food, cosmetics and other industries. Has a wide range of uses. Its molecular weight or fineness determines its use efficacy and market valu...

Claims

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Application Information

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IPC IPC(8): C08J3/12C08L1/02
Inventor 徐季亮郑浩博
Owner 徐季亮
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