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Extracting and processing technique of carrageen

A processing technology, carrageenan technology, applied in the field of extraction and processing technology, can solve the problems of low transparency and purity of extracted colloid, incomplete dissolution of colloid, slow gelation of carrageenan, etc., to achieve excellent transparency and purity, and inhibit Effects of microbial growth and water content reduction

Active Publication Date: 2011-03-09
青岛聚大洋藻业集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many disadvantages in this method. First, during the alkali treatment, the seaweed undergoes peptization and the loss is large; and the cellulose tissue structure of the cell wall is not easy to be destroyed, and the colloid is not completely dissolved, which wastes raw materials, and the extraction efficiency is low. Quality transparency and purity is not high
The traditional process generally adopts cooling after filtration, the formation of carrageenan gel is slow, and the energy consumption is high; by pressing and dehydrating, the moisture content of the carrageenan block after pressing is 80-85%, and the water content is relatively high

Method used

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  • Extracting and processing technique of carrageen

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0023] A kind of extraction and processing technology of carrageenan, comprises the steps:

[0024] (1) Cleaning: Soak Eucheuma in 10 times the amount of water and clean it for 3 hours;

[0025] (2) Alkali treatment: Alkali treatment of Eucheuma after cleaning with 8% sodium hydroxide and 5% potassium chloride mixture at 50°C for 15 hours;

[0026] (3) Washing: rinse and soak the Eucheuma after the alkali treatment with water until the pH value is neutral, and adjust the pH value to weak acidity with a concentration of 0.3% hydrochloric acid solution;

[0027] (4) Enzymolysis: soak the washed Eucheuma in hot water, adjust the temperature to 40°C, add 1.0% cellulase, and enzymolyze at 45°C for 1 hour; Enzyme 10 minutes;

[0028] (5) Extraction: boil the enzymatically hydrolyzed Eucheuma gelatin in hot water at 90°C for 1 hour, and keep stirring during the boiling process;

[0029] (6) Filtration: filter the boiled coarse glue solution while hot with a microporous plate-and-f...

specific Embodiment 2

[0036] A kind of extraction and processing technology of carrageenan, comprises the steps:

[0037] (1) Cleaning: Soak Eucheuma in 25 times of water and clean it for 8 hours;

[0038] (2) Alkali treatment: Alkali treatment of the washed Eucheuma with 8% sodium hydroxide and 7% potassium chloride mixture at 50° C. for 10-24 hours;

[0039] (3) Washing: rinse and soak the Eucheuma after the alkali treatment with water until the pH value is neutral, and adjust the pH value to weak acidity with a concentration of 0.3% hydrochloric acid solution;

[0040] (4) Enzymolysis: soak the washed Eucheuma in hot water, adjust the temperature to 60°C, add 1.0% cellulase, and enzymolyze at 50°C for 1 hour; Enzyme 10 minutes;

[0041] (5) Extraction: boil the enzymatically hydrolyzed Eucheuma gelatin in hot water at 90°C for 1 hour, and keep stirring during the boiling process;

[0042] (6) Filtration: filter the boiled coarse glue solution while hot with a microporous plate-and-frame filte...

specific Embodiment 3

[0049] A kind of extraction and processing technology of carrageenan, comprises the steps:

[0050] (1) Cleaning: Soak Eucheuma in 18 times of water and clean it for 5 hours;

[0051] (2) Alkali treatment: Alkali treatment of the washed Eucheuma baicalensis with 7% sodium hydroxide and 6% potassium chloride mixture at 50° C. for 10-24 hours;

[0052] (3) Washing: Rinse and soak the Eucheuma after the alkali treatment with water until the pH value is neutral, and adjust the pH value to weak acidity with a concentration of 0.2% hydrochloric acid solution;

[0053](4) Enzymolysis: soak the washed Eucheuma in hot water, adjust the temperature to 45°C, add 0.8% cellulase, and enzymolyze at 48°C for 1 hour; Enzyme 10 minutes;

[0054] (5) Extraction: boil the enzymatically hydrolyzed Eucheuma gelatin in 80°C hot water for 1 hour, and keep stirring during the boiling process;

[0055] (6) Filtration: filter the boiled coarse glue while it is hot, and the glue content in the filter...

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Abstract

The invention relates to an extracting and processing technique of carrageen by utilizing eucheuma, which comprises the procedures of cleaning, alkali treatment, washing, enzymatic hydrolysis, extracting, filtering, potassic alteration, dehydration, crushing and drying. By adopting enzyme biotechnology technology, the extraction rate and quality of carrageenan are improved, while the production cycle and energy consumption thereof being lowered. Colloid dissolves out of carrageen cells completely after the organization of cellulose in carrageen cell wall being destroyed during the procedure of enzymatic hydrolysis, thus improving the extraction rate of carrageenan. Meanwhile, the time of boiling procedure is shortened and the temperature thereof is lowered. The yield of products is increased and steam consumption during the process is reduced. Small molecule pigments also dissolve out of carrageen cells during the procedure of enzymatic hydrolysis, thus improving the transparency and purity of the obtained carrageenan. Since alcohol is adopted in dehydration procedure, the water content of the products is greatly reduced. Meanwhile, bactericidal effect of alcohol is favorable to inhibit the breeding of microorganisms during the process, thereby fulfilling the objective of disinfection and bacteriostasis. The above technique has the advantages of high extraction efficiency, high utilization rate of raw materials and high transparency and purity of the obtained carrageenan.

Description

technical field [0001] The invention belongs to a preparation method of carrageenan, in particular to an extraction and processing technology for preparing carrageenan by adopting Eucheuma. Background technique [0002] Carrageenan is a natural polysaccharide plant gum extracted from red algae, which is widely used in food industry, chemical industry, biochemical, medical research and other fields. Due to the many physical and chemical properties of carrageenan, satisfactory elasticity, transparency and solubility have expanded the application range of carrageenan; the safety and non-toxic properties have been confirmed by the United Nations Food and Agriculture Organization and the World Health Organization Joint Expert Committee on Food Additives (UECFA) . Therefore, in recent years, carrageenan has developed rapidly at home and abroad, and the demand has increased greatly. Therefore, it is particularly critical to improve the preparation efficiency and preparation quali...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/00
Inventor 程跃谟吴仕鹏孙梅郭华玉殷聪
Owner 青岛聚大洋藻业集团有限公司
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