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Carrageenan preparation method

A technology of carrageenan and Eucheuma, which is applied in the field of preparation of carrageenan, can solve the problems of unsatisfactory gel strength, high processing cost, and low extraction rate of carrageenan, so as to reduce the loss of carrageenan, increase the yield, and increase the interface The effect of electric potential

Inactive Publication Date: 2015-08-19
FUJIAN GOLD SWALLOW OCEAN BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing carrageenan preparation methods mostly include steps such as cleaning, alkali treatment, and cooking. The disadvantages are that the processing cost is high, the extraction rate of carrageenan is not high, and the gel strength is not ideal.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] During alkaline treatment, the weight ratio of sodium hydroxide, potassium hydroxide mixed solution to raw materials is 420:1, and the sodium hydroxide, potassium hydroxide mixed solution contains 3.5% sodium hydroxide and 7% potassium hydroxide. The modified raw materials are neutralized by dilute acid solution to a pH value of 7-8, after neutralization, the modified raw materials are washed with water, and then 60u / g cellulase solution is added for treatment. The weight of cellulase solution and raw materials The ratio is 260:1. Then microwave irradiation treatment at 300-350W microwave radiation power for 18 minutes, boiling in high temperature water to extract the gelatin, adding 7.5% potassium chloride and 0.01-0.1% potassium pyrophosphate auxiliary agent to obtain carrageenan.

[0034] Through the carrageenan prepared in this embodiment 1, the extraction rate is 35%, and the gel strength is 85g / cm 2 , Measuring method of gel strength: accurately prepare 1.5% carr...

Embodiment 2

[0036] During alkaline treatment, the weight ratio of sodium hydroxide, potassium hydroxide mixed solution to raw materials is 400:1, and the sodium hydroxide, potassium hydroxide mixed solution contains 3.1% sodium hydroxide and 6.2% potassium hydroxide. The modified raw materials are neutralized by dilute acid solution to a pH value of 7-8, after neutralization, the modified raw materials are washed with water, and then 60u / g cellulase solution is added for treatment. The weight of cellulase solution and raw materials The ratio is 290:1. Then microwave irradiation treatment at 300-350W microwave radiation power for 18 minutes, boiling in high temperature water to extract the gelatin, adding 7.5% potassium chloride and 0.01-0.1% potassium pyrophosphate auxiliary agent to obtain carrageenan.

[0037] Through the carrageenan prepared in this embodiment 2, the extraction rate is 36%, and the gel strength is 87g / cm 2 , Measuring method of gel strength: accurately prepare 1.5% ca...

Embodiment 3

[0039] During alkaline treatment, the weight ratio of sodium hydroxide, potassium hydroxide mixed solution to raw materials is 440:1, and the sodium hydroxide, potassium hydroxide mixed solution contains 3.9% sodium hydroxide and 6.7% potassium hydroxide. The modified raw materials are neutralized by dilute acid solution to a pH value of 7-8, after neutralization, the modified raw materials are washed with water, and then 60u / g cellulase solution is added for treatment. The weight of cellulase solution and raw materials The ratio is 275:1. Then microwave irradiation treatment at 300-350W microwave radiation power for 18 minutes, boiling in high temperature water to extract the gelatin, adding 7.5% potassium chloride and 0.01-0.1% potassium pyrophosphate auxiliary agent to obtain carrageenan.

[0040] Through the carrageenan prepared in this embodiment 3, the extraction rate is 33%, and the gel strength is 84g / cm 2 , Measuring method of gel strength: accurately prepare 1.5% ca...

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Abstract

The invention relates to a carrageenan preparation method. The method comprises the following steps: 1, immersing eucheuma in an inorganic acid to soften external fibers of the eucheuma; 2, processing the inorganic acid immersed eucheuma under ultrasonic conditions for 30-60min, cleaning, swelling to soften eucheuma frond, and draining obtained frond residues for later use as a raw material; 3, carrying out alkali modification on the frond residues obtained in step 2 in a sodium hydroxide and potassium hydroxide mixed solution, and neutralizing the modified raw material by using a diluted acid solution to the pH value of 7-8; 4, cleaning the modified raw material by using clear water, adding a cellulase solution, and processing; 5, carrying out microwave radiation treatment under a microwave radiation power of 300-350W for 18min; and 6, carrying out high temperature water boiling gel extraction, adding an inorganic salt with the weight concentration of 3.5-12.5% and the pH value of 6.5-7 in the gel boiling process, and simultaneously adding a potassium pyrophosphate assistant in the gel boiling process.

Description

technical field [0001] The invention relates to a preparation method of carrageenan. Background technique [0002] Carrageenan (also known as carrageenan or staghorn alginate) is a natural high-molecular hydrophilic polysaccharide extracted from marine red algae. Its chemical structure is a linear polysaccharide compound composed of D-galactose and 3,6-anhydro-D-galactose residues. Different sources have different fine structures, and their colloidal properties are also different. The named ones are kappa (Kappa), iota (Aota), lambda (Lambda), mu (Miao), nu (New Zealand) , theta (setta), xi (west) type carrageenan, etc., but the commercial production is mainly the first three types, the largest output is kappa type, and the output of Iota type and Lambda type is small. Carrageenan is widely used in food, medicine, daily chemicals, biochemistry, architectural coatings, textile printing and dyeing, and food. As a gelling agent, thickener, stabilizer, suspending agent and cl...

Claims

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Application Information

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IPC IPC(8): C08B37/00
Inventor 陈振祥
Owner FUJIAN GOLD SWALLOW OCEAN BIOTECH
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