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Preparation method of calcium alginate gel balls

A technology of calcium alginate gel balls and sodium alginate, which is applied in the field of preparation of calcium alginate gel balls, can solve the problems of slow preparation efficiency and poor effect, and achieves low cost, increased specific surface area, and enlarged pores. the effect of

Active Publication Date: 2022-01-28
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem of slow preparation efficiency and poor effect of existing calcium alginate gel balls, the present invention provides a preparation method of calcium alginate gel balls

Method used

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  • Preparation method of calcium alginate gel balls
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  • Preparation method of calcium alginate gel balls

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preparation example Construction

[0034] A preparation method for calcium alginate gel balls, comprising the following steps:

[0035] S1: Prepare sodium alginate solution and calcium chloride solution respectively; Specifically, in this step, take a certain amount of sodium alginate and calcium chloride respectively, and put them into water for dissolving to obtain sodium alginate solution and calcium chloride solution; in order to avoid introducing impurities in the dissolving process, adopt distilled water to carry out the preparation of sodium alginate solution and calcium chloride solution respectively, improve the purity of solution preparation; set the concentration of the sodium alginate solution prepared simultaneously to be 1%~3% ( w / v), to avoid tailing phenomenon when the concentration of sodium alginate solution is too high, resulting in irregular gel shape and inconsistent size; Calcium chloride is reacted to obtain calcium alginate gel balls. The concentration of calcium chloride solution is 3%...

Embodiment 1

[0041] A preparation method for calcium alginate gel balls, comprising the following steps:

[0042] S1: Take 1g of sodium alginate in 100ml of distilled water, soak it for 1 hour, and dissolve it by ultrasonic to obtain a sodium alginate solution with a concentration of 1%. Dissolve 3g of calcium chloride in 100ml of distilled water to obtain a calcium chloride solution with a concentration of 3%. ;

[0043] S2: Pour the prepared sodium alginate solution into the mold lower cover 2, then seal it with the upper cover 1, drain the excess sodium alginate solution through the drain hole on the upper cover 1, and put it in a -40°C refrigerator to freeze Take it out after 10 minutes, thaw at 24°C for 5 minutes, and then get sodium alginate ice balls;

[0044] S3: Soak the sodium alginate ice balls in a 3% calcium chloride solution for immersion and stirring. After reacting for 4 hours, take them out and wash them with distilled water for 3 times to obtain calcium alginate gel ball...

Embodiment 2

[0047] A preparation method for calcium alginate gel balls, comprising the following steps:

[0048] S1: Take 3g of sodium alginate in 100ml of distilled water, soak for 1 hour, and ultrasonically dissolve to obtain a sodium alginate solution with a concentration of 3%; dissolve 4g of calcium chloride in 100ml of distilled water to obtain a calcium chloride solution with a concentration of 4%. ;

[0049] S2: Pour the prepared sodium alginate solution into the mold lower cover 2, then seal it with the upper cover 1, drain the excess sodium alginate solution through the drain hole on the upper cover 1, and put it in a -30°C refrigerator to freeze Take it out after 20 minutes, thaw at 20°C for 10 minutes, and then get sodium alginate ice balls;

[0050] S3: Soak the sodium alginate ice balls in a 4% calcium chloride solution for immersion and stirring. After reacting for 2 hours, take them out and wash them with distilled water for 3 times to obtain calcium alginate gel balls. ...

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Abstract

The invention discloses a preparation method of calcium alginate gel balls, and belongs to the field of natural carrier preparation. Aiming at the problems of low preparation efficiency and poor effect of existing calcium alginate gel balls, the invention provides a preparation method of calcium alginate gel balls, wherein the preparation method comprises the following steps: respectively preparing a sodium alginate solution and a calcium chloride solution; pouring the prepared sodium alginate solution into a mold, freezing the mold, and then obtaining sodium alginate ice balls; and putting the sodium alginate ice balls into a calcium chloride solution, soaking and stirring to obtain the calcium alginate gel balls. The sodium alginate solution is frozen, water in the solution can be converted into ice crystals, the specific surface area of the obtained sodium alginate ice balls is increased, gaps are increased, the obtained sodium alginate ice balls and the calcium chloride solution are subjected to a cross-linking reaction to form more pore structures, the specific surface area and pore volume of the calcium alginate gel balls are increased, and the calcium alginate gel balls serve as a microbial immobilization carrier; and the microorganism attachment area is increased, the efficiency is high, and the subsequent effect is strong.

Description

technical field [0001] The invention belongs to the field of natural carrier preparation, and more specifically relates to a preparation method of calcium alginate gel balls. Background technique [0002] Sodium alginate has the advantages of rich sources, low cost, biodegradability and good biocompatibility, etc., and contains a large number of groups, so that it can complete the adsorption effect through electrostatic attraction or complexation. Sodium alginate and calcium ions cross-link through ionotropic effect to form calcium alginate coating layer or capsule, and obtain stable and long-lasting film and microcapsule structure, which belongs to natural carrier in terms of carrier type. The carrier can be reused, easy to separate and purify, and can maintain the stability of the bioreactor. The microcapsules prepared by sodium alginate are used as bio-immobilization carriers in bio-fermentation, which can achieve alcohol production equivalent to yeast cell free culture,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/26C08J9/36C08L5/04
CPCC08J9/26C08J9/36C08J2201/0484C08J2305/04
Inventor 赵琦慧李法云邢晶鑫
Owner SHANGHAI INST OF TECH
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