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Device and method for extracting algal polysaccharide by ultrasonic-assisted extraction

A seaweed polysaccharide and auxiliary extraction technology, which is applied in the field of ultrasonic-assisted extraction of seaweed polysaccharide devices, can solve the problems of reduced polysaccharide biological activity, time-consuming, time-consuming and labor-intensive enzymatic extraction, and achieves effective extraction, shortening extraction time, and reducing The effect of energy consumption

Active Publication Date: 2013-08-28
ZHEJIANG YUXIANG BIOLOGICAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are certain defects in the above-mentioned extraction methods: the acid extraction method is easy to cause polysaccharide hydrolysis, the alkali extraction method is easy to cause the polysaccharide biological activity to decrease, the enzyme extraction method is time-consuming, and the amount of enzyme required for industrial production is large and the cost is high.
However, the time required for the whole process is still relatively long, and there are defects such as time-consuming and labor-intensive.

Method used

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  • Device and method for extracting algal polysaccharide by ultrasonic-assisted extraction
  • Device and method for extracting algal polysaccharide by ultrasonic-assisted extraction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] refer to figure 1 , a device for ultrasonically assisted extraction of seaweed polysaccharides, the device includes an extraction reactor 1, an ultrasonic generator 3, a temperature control device and a stirring device, and the extraction reactor 1 is provided with an extraction tube 10 for placing the extract , the extraction pipe 10 is concentrically located in the extraction reactor 1 .

[0042] The tube wall of the extraction tube 10 is provided with several through holes 11 around, the number of the ultrasonic generator 3 is 1, and the ultrasonic generator 3 is connected with the inner cavity of the extraction reactor 1 through the corresponding ultrasonic probe 2. The ultrasonic probe 2 is arranged on the bottom of the extraction reactor 1 and is located outside the extraction pipe 10; the temperature control device includes a temperature controller 4, a temperature sensing probe 6 and a serpentine heating tube 7, and the temperature sensing probe 6 and the serpen...

Embodiment 2

[0047] refer to figure 2 , a device for ultrasonically assisted extraction of seaweed polysaccharides, the device includes an extraction reactor 1, an ultrasonic generator 3, a temperature control device and a stirring device, and the extraction reactor 1 is provided with an extraction tube 10 for placing the extract , the extraction pipe 10 is concentrically located in the extraction reactor 1 .

[0048] The tube wall of the extraction tube 10 is provided with several through holes 11 around, the number of the ultrasonic generators 3 is 6, and each ultrasonic generator 3 is connected with the extraction reactor 1 through a corresponding ultrasonic probe 2, The ultrasonic probe 2 is evenly arranged in the extraction reactor 1 and is located outside the extraction pipe 10; the temperature control device includes a temperature controller 4, a temperature-sensing probe 6 and a serpentine heating tube 7, and the temperature-sensing probe 6 and the serpentine The heating pipes 7 ...

Embodiment 3

[0052] A method for extracting seaweed polysaccharides using the device described in Example 2, comprising the steps of:

[0053] (1) Crush the kelp, pass through a 60-mesh sieve, and place it in gauze to obtain the extract;

[0054] (2) Put the extract to be extracted in the extraction tube, add a certain volume of water to the extraction reactor, and use ultrasonic crushing to extract for a period of time to obtain the extract; wherein, the conditions in the extraction reactor are controlled as follows: the mass ratio of solid to liquid The ratio is 1:32, the ultrasonic frequency is 35kHz, the ultrasonic power is 145W, the extraction temperature is 55°C, and the extraction time is 23min;

[0055] (3) The extract is further centrifuged, concentrated, ethanol precipitated, and filtered to obtain seaweed crude polysaccharides; wherein, the centrifuged extract is concentrated to 1 / 5 of the original volume, and the volume ratio of the concentrate to ethanol is 1:3.7.

[0056] (4...

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Abstract

The invention relates to a device and a method for extracting algal polysaccharide by ultrasonic-assisted extraction. The device comprises an extraction reactor, ultrasonic generators and a temperature controlling device, wherein the extraction reactor is internally provided with an extraction tube for placing materials to be extracted; a plurality of through holes are formed in the periphery of the wall of the extraction tube; and more than one ultrasonic generator is arranged. The method comprises the following steps of: crushing kelps, sargassum fusiforme or undaria pinnatifida; adjusting ultrasonic power, a material-liquid ratio, temperatures and time and precipitating an extracting solution by ethanol; filtering to obtain rough algal polysaccharide; purifying the rough algal polysaccharide by utilizing DEAE (Diethyl-Aminoethanol) cellulose column chromatography; and finally, spraying and drying or freezing and drying to obtain an algal polysaccharide pure product. The method disclosed by the invention is simple and is easy to operate; the time consumed by extracting the algal polysaccharide through the method disclosed by the invention is short, and the purity of the algal polysaccharide is high and can be up to be more than 98%; and therefore, not only can the cost be saved and the energy consumption be reduced, but also the automation is easy to realize and the extraction efficiency can be improved.

Description

technical field [0001] The invention relates to a device and method for extracting seaweed polysaccharides, in particular to a device and method for ultrasonically assisted extraction of seaweed polysaccharides. Background technique [0002] Polysaccharides are widely distributed in nature and are important components of living organisms. They play an important role in controlling cell division, regulating cell growth and maintaining normal metabolism of life. Therefore, studies related to polysaccharides have attracted more and more attention. As the medicinal potential of polysaccharides from marine organisms is gradually developed, seaweed has the largest number and variety of marine plants, and the polysaccharide content accounts for more than 50% of the dry weight, making it the most promising type of active substance. Seaweed polysaccharide is a high molecular carbohydrate composed of multiple identical or different monosaccharide groups connected by glycosidic bonds,...

Claims

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Application Information

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IPC IPC(8): C08B37/00
Inventor 刘振锋陈士国王廷山戴圣佳张宗华叶兴乾
Owner ZHEJIANG YUXIANG BIOLOGICAL SCI & TECH
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