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Preparation method of fucosan

A fucoidan and concentration technology, applied in the field of fucoidan preparation, can solve the problems of high heavy metal content, no consideration of heavy metal removal, affecting product quality and the like

Inactive Publication Date: 2011-09-07
JIMEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the past, in the process of preparing fucoidan, the problem of removing the combined heavy metals was not considered, resulting in a high content of heavy metals in the preparation of fucoidan, which affected the quality of the product

Method used

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  • Preparation method of fucosan

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Effect test

Embodiment 1

[0015] The present invention is a preparation method of fucoidan, comprising the following steps:

[0016] (1) Get 100kg of dried kelp, remove sand and sundries, dry, pulverize, and sieve 80 meshes to make kelp dry powder.

[0017] (2) Take 50Kg of the above-mentioned dried kelp powder, add 1000Kg of deionized water, and stir evenly. After incubating at 80°C for 3 hours, centrifugation was carried out with a tubular continuous centrifuge (10,000 revolutions per minute, 10 minutes) to obtain about 300 Kg of supernatant.

[0018] (3) Concentrated hydrochloric acid (HCl) was made into a concentration of 4 mol / L, and added to the above-mentioned supernatant in proportion to make the HCl concentration reach 0.1 mol / L. After standing for 15 minutes, it was centrifuged with a tubular continuous centrifuge, and the precipitate was mainly alginic acid impurities. About 250Kg of supernatant was obtained.

[0019] (4) The solid sodium hydroxide (NaOH) was prepared into a 6N concentrat...

Embodiment 2

[0028] The present invention is a preparation method of fucoidan, comprising the following steps:

[0029] (1) Get 100kg of dried kelp, remove sand and sundries, dry, pulverize, and sieve 80 meshes to make kelp dry powder.

[0030] (2) Take 50Kg of the above-mentioned dried kelp powder, add 900Kg of deionized water, and stir evenly. After incubating at 75°C for 3 hours, centrifugation was carried out with a tubular continuous centrifuge (600 revolutions per minute, 12 minutes) to obtain about 300Kg of supernatant.

[0031] (3) Concentrated hydrochloric acid (HCl) was made into a concentration of 4 mol / L, and added to the above-mentioned supernatant in proportion to make the HCl concentration reach 0.1 mol / L. After standing for 18 minutes, it was centrifuged with a tubular continuous centrifuge, and the precipitate was mainly alginic acid impurities. About 250Kg of supernatant was obtained.

[0032] (4) Solid sodium hydroxide (NaOH) was prepared into a 6N concentration solut...

Embodiment 3

[0037] The present invention is a preparation method of fucoidan, comprising the following steps:

[0038] (1) Get 100kg of dried kelp, remove sand and sundries, dry, pulverize, and sieve 80 meshes to make kelp dry powder.

[0039] (2) Take 50Kg of the above-mentioned dried kelp powder, add 950Kg of deionized water, and stir evenly. After incubating at 77° C. for 3.5 hours, centrifugation was carried out in a tubular continuous centrifuge (800 revolutions per minute, 15 minutes) to obtain about 300 Kg of supernatant.

[0040] (3) Concentrated hydrochloric acid (HCl) was made into a concentration of 4 mol / L, and added to the above-mentioned supernatant in proportion to make the HCl concentration reach 0.1 mol / L. After standing for 20 minutes, it was centrifuged with a tubular continuous centrifuge, and the precipitate was mainly alginic acid impurities. About 250Kg of supernatant was obtained.

[0041] (4) The solid sodium hydroxide (NaOH) is made into a 6N concentration sol...

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PUM

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Abstract

The invention discloses a preparation method of fucosan. On the basis of the traditional preparation technology of the fucosan, HCl is adopted to adjust the pH value of solution, and metal chelating agent EDTA is added, so as to lead heavy metal ions originally chelated on the fucosan sulfate groups to shed off and form chelates with the EDTA. By adopting an ultrafiltration technology, the EDTA-heavy metal chelates are separated from the fucosan, and concentrated, and the fucosan after the removal of heavy metal elements can be prepared through freeze-drying. The preparation method has the advantages of simple operation, mild conditions, high shedding rate of heavy metal ions, low cost and the like, and is suitable for large-scale operations.

Description

technical field [0001] The invention relates to a method for preparing fucoidan from seaweed and removing heavy metal ions, in particular to a technical method combining pH adjustment and metal ion chelating agent EDTA to remove heavy metal elements As, The preparation method of fucoidan of Ag, Cd, Pb. Background technique [0002] Fucoidan is an acidic sulfated polysaccharide that exists in the cell wall of brown algae (such as kelp), and its molecular structure contains sulfate ( ＝ SO 4 ) and uronic acid (COOH) and other structural components, so that the polysaccharide has the characteristics of polyanion system, which can bind heavy metal ions in the ocean (such as As +2 , Ag +2 , Cd +2 , Pb +3 ). Heavy metals are extremely harmful to the human body. Although these heavy metals exist in the form of complexes in fucoidan, once the polysaccharides enter the human body, these heavy metal elements may be dissociated due to the acidic medium conditions of the intestinal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B37/00
Inventor 吴永沛刘翼翔
Owner JIMEI UNIV
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