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Clean production process of high-viscosity sodium alginate

A technology of sodium alginate and production process, which is applied in the field of clean production process of high-viscosity sodium alginate, can solve the problems of inability to meet the requirements of low-calcium products, high pseudoplastic viscosity, and rapid viscosity decrease, and saves reaction time, Guaranteed high viscosity and reduced dosage

Inactive Publication Date: 2019-04-23
青岛海之林生物科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The alginate product produced by this method has a high calcium content, so it has a very high pseudoplastic viscosity, but it cannot meet the requirements of low calcium products, and the viscosity drops rapidly during storage, making it unstable

Method used

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  • Clean production process of high-viscosity sodium alginate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Dried brown algae soaking: put the brown algae into the enzymatic hydrolysis tank to fully rehydrate, the amount of water added is about 8 times, and the rehydration time: 6h;

[0034] (2) Composite enzyme enzymatic hydrolysis: adjust the temperature of the enzymolysis tank to 40°C, the pH is 4.5, add the compound enzyme (protease: cellulase: pectinase = 1:1:1.2), the addition amount is dry brown algae weight 1 %, enzymatic hydrolysis reaction for 3 hours, the purpose is to completely decompose the protein, pectin, cellulose, etc. in brown algae;

[0035] (3) Calcification: add calcium chloride to the enzymolysis tank until the concentration of calcium chloride is 5%, so that the alginate radicals therein are fully calcified and converted into fibrous calcium alginate;

[0036] (4) Reverse water washing: the calcium alginate fiber is transported to a high position with a conveyor belt, and a water jet is connected to the high position to perform reverse washing on t...

Embodiment 2

[0044] (1) Dried brown algae soaking: put the brown algae into the enzymatic hydrolysis tank to fully rehydrate, the amount of water added is about 9 times, and the rehydration time: 7h;

[0045] (2) Compound enzyme enzymolysis: adjust the temperature of the enzymolysis tank to 45°C, pH 5.0, add compound enzyme (protease: cellulase: pectinase = 1:1:1.3), the amount added is the weight of dry brown algae 2 %, enzymatic hydrolysis reaction for 4 hours, the purpose is to completely decompose the protein, pectin, cellulose, etc. in brown algae;

[0046] (3) Calcification: add calcium chloride to the enzymolysis tank until the concentration of calcium chloride is 5%, so that the alginate radicals therein are fully calcified and converted into fibrous calcium alginate;

[0047] (4) Reverse water washing: the calcium alginate fiber is transported to a high position with a conveyor belt, and a water jet is connected to the high position to perform reverse washing on the algae fiber. ...

Embodiment 3

[0055] (1) Dried brown algae soaking: put the brown algae into the enzymatic hydrolysis tank to fully rehydrate, the amount of water added is about 10 times, and the rehydration time: 8h;

[0056] (2) Compound enzyme enzymolysis: adjust the temperature of the enzymolysis tank to 55°C, pH 5.5, add compound enzyme (protease: cellulase: pectinase = 1:1:1.5), the amount added is dry brown algae weight 3 %, enzymatic hydrolysis reaction for 5 hours, the purpose is to completely decompose the protein, pectin, cellulose, etc. in brown algae;

[0057] (3) Calcification: add calcium chloride to the enzymolysis tank until the concentration of calcium chloride is 5%, so that the alginate radicals therein are fully calcified and converted into fibrous calcium alginate;

[0058] (4) Reverse water washing: the calcium alginate fiber is transported to a high position with a conveyor belt, and a water jet is connected to the high position to perform reverse washing on the algae fiber. Water ...

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Abstract

The invention aims at solving the problem in the existing sodium alginate extraction process, and provides a novel process for extracting sodium alginate from brown algae. The novel process comprisesthe following steps: soaking dry brown algae, enzymolyzing with composite biological enzyme, performing the calcification, inversely washing, acidifying, neutralizing, squeezing, centrifuging, and drying. The clean production adopts a whole-course fibrosis production method, so that the digesting diluting step of the traditional process which consuming a great amount of water can be omitted, the water resource can be greatly saved, and the production cost can be reduced. By adopting a reverse washing process, the production water can be saved. In addition, the long-time alkali digestion treatment is not adopted in the process, so that the original structural length of a sodium alginate polysaccharide chain segment can be fundamentally kept, the produced sodium alginate is high in viscosityand good viscosity stability, the stable high viscosity can still be kept in the high-temperature summer, and the viscosity range is about 1500 to 2000 mpa.s.

Description

technical field [0001] The invention belongs to the technical field of preparation of marine chemical products, and in particular relates to a clean production process of high-viscosity sodium alginate. Background technique [0002] In brown algae plants, alginic acid mainly exists in the cell wall of brown algae in the form of sodium salt, calcium salt and a small amount of magnesium salt. Calcium salt is insoluble in water, but sodium salt is soluble in water. When extracting sodium alginate from seaweed, the key is to convert various alginate in the cell wall of brown algae into sodium alginate and purify it. [0003] Since the commercial production of sodium alginate began in 1929, the production of sodium alginate in all countries in the world has basically adopted the soda ash digestion process, that is, using lye to convert the alginate in seaweed into sol-like sodium alginate, dissolving it in water, and then using Calcium salts are used to purify alginate radicals,...

Claims

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Application Information

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IPC IPC(8): C08B37/04
CPCC08B37/0003C08B37/0084
Inventor 崔冰陈翔李晓慧孙暖暖胡海月孙彤
Owner 青岛海之林生物科技开发有限公司
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