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
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[0040] Example 1
[0041] Reference figure 1 , An ultrasonic-assisted extraction device for seaweed polysaccharides, the device includes an extraction reactor 1, an ultrasonic generator 3, a temperature control device, and a stirring device. The extraction reactor 1 is provided with an extraction tube 10 for placing the extract , The extraction tube 10 is concentrically located in the extraction reactor 1.
[0042] A plurality of through holes 11 are provided around the wall of the extraction tube 10, the number of the ultrasonic generator 3 is one, and the ultrasonic generator 3 is connected to the inner cavity of the extraction reactor 1 through a corresponding ultrasonic probe 2. The ultrasonic probe 2 is arranged in the lower part of the extraction reactor 1 and outside the extraction tube 10; the temperature control device includes a temperature controller 4, a temperature sensing probe 6 and a serpentine heating tube 7, a temperature sensing probe 6 and a serpentine heating t...
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[0046] Example 2
[0047] Reference figure 2 , An ultrasonic-assisted extraction device for seaweed polysaccharides, the device includes an extraction reactor 1, an ultrasonic generator 3, a temperature control device, and a stirring device. The extraction reactor 1 is provided with an extraction tube 10 for placing the extract , The extraction tube 10 is concentrically located in the extraction reactor 1.
[0048] A number of through holes 11 are provided around the wall of the extraction tube 10, the number of the ultrasonic generators 3 is 6, and each ultrasonic generator 3 is connected to the extraction reactor 1 through a corresponding ultrasonic probe 2. The ultrasonic probe 2 is uniformly arranged in the extraction reactor 1 and located outside the extraction tube 10; the temperature control device includes a temperature controller 4, a temperature sensing probe 6 and a serpentine heating tube 7, a temperature sensing probe 6 and a serpentine The heating tube 7 is respect...
Example Embodiment
[0051] Example 3
[0052] A method for extracting seaweed polysaccharides by using the device described in Example 2, including the following steps:
[0053] (1) Crush the kelp, pass it through a 60-mesh sieve, and place it in gauze to obtain the extract;
[0054] (2) Put the extract to be extracted into 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 various conditions in the extraction reactor are controlled as follows: 1:32, ultrasonic frequency is 35kHz, ultrasonic power is 145W, extraction temperature is 55℃, extraction time is 23min;
[0055] (3) The extract is further centrifuged, concentrated, ethanol-precipitated, and filtered to obtain crude seaweed polysaccharide; wherein, the centrifugal extract is concentrated to 1 / 5 of the original volume, and the volume ratio of the concentrated solution to ethanol is 1:3.7.
[0056] (4) Purify the crude seaweed p...
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