CN101456920A - Method for producing high transparent sodium alginate - Google Patents
Method for producing high transparent sodium alginate Download PDFInfo
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- CN101456920A CN101456920A CNA2008102377755A CN200810237775A CN101456920A CN 101456920 A CN101456920 A CN 101456920A CN A2008102377755 A CNA2008102377755 A CN A2008102377755A CN 200810237775 A CN200810237775 A CN 200810237775A CN 101456920 A CN101456920 A CN 101456920A
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- sodium alginate
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Abstract
The invention relates to a production method for high transparency sodium alginate. The production method is characterized in that after the pretreatment, digestion, dilution and floatation of kelp, the kelp is filtered through a non-diatomite precoat, and the high transparency sodium alginate is obtained after the decalcification through hydrochloric acid, dehydration, neutralization, granulation, drying and crushing; the obtained kelp digestion solution is diluted to 80 to 200 folds of the weight of the kelp; and the filter cloth used in the non-diatomite precoat filtration is nylon cloth, and the aperture of the filter cloth is 80 to 600 meshes. The production method for the high transparency sodium alginate fills up the domestic blank, facilitates the promotion of the great development of the sodium alginate industry in the country, and continues to strengthen the hegemon status of the sodium alginate industry of the country in the world alga industry.
Description
Technical field
The present invention relates to a kind of production method of high transparent sodium alginate.
Background technology
Tradition sodium alginate production is raw material with the brown alga mainly, takes following 19 procedures: cut the dish, washing, formaldehyde fixation, yellow soda ash digestion, towards rare, coarse filtration, inflation foaming, floating, the smart filter of track type, calcification, secondary decalcification, squeezing, solid phase or liquid phase neutralization, kneading, granulation, dry, be mixed, abrasive dust, packing etc.The tradition sodium alginate is owing to adopt the method production of track type filtration and secondary decalcification, cause the purity of sodium alginate impure, it is to utilize algin liquid to see through nylon wire naturally that track type is filtered, make that other impurity separate in algin and the aqueous solution, but also some micromolecular fiber, compositions such as earth also enter into sodium alginate solution thereupon, thereby the purity and the transparency of sodium alginate have been influenced, sodium alginate solution after the filtration makes sodium alginate become calcium alginate by calcification to separate with water, form alginic acid by the decalcification of hydrochloric acid secondary again, obtain sodium alginate after the neutralization, the decalcification degree direct influence is to the purity and the transparency of sodium alginate, calcium contents is greater than 0.4% in the secondary hydrochloric acid decalcification gained sodium alginate finished product, water-insoluble is greater than 3%, the transparency of sodium alginate is 90%-95%, the sodium alginate quality and the less stable that cause China to produce, price in the world is on the low side, has had a strong impact on sodium alginate medicinal, the development in food and other field.
Summary of the invention
The production method that the purpose of this invention is to provide a kind of high transparent sodium alginate, it can overcome the above-mentioned shortcoming of prior art.
A kind of production method of high transparent sodium alginate is characterized in that the sea-tangle pre-treatment, and digestion is floating towards rare, with no diatomite precoat filtration, use the calcium chloride calcification, use the hydrochloric acid decalcification, dewaters, and neutralizes, and granulation is dried, pulverize sodium alginate; With gained sea-tangle Digestive system water towards rare be sea-tangle weight 80-200 doubly; The filter cloth that described no diatomite precoat filtration is used is a nylon cloth, and the filter cloth aperture is the 80-600 order.
The present invention adopts no diatomite precoat filtration to combine with decalcification repeatedly, calcium contents in the gained sodium alginate is less than 0.1%, water-insoluble is less than 0.3%, the transparency of sodium alginate is greater than 99.8%, greatly improved the deficiency of above-mentioned sodium alginate quality, filled up domestic blank, more helped promoting the tremendous development of China's sodium alginate industry, continued the dominance of firm China algin industry in world's seaweed industry.
Embodiment
The production method of high transparent sodium alginate of the present invention is the sea-tangle pre-treatment, and digestion is floating towards rare, with no diatomite precoat filtration, use the calcium chloride calcification, use the hydrochloric acid decalcification, dewaters, and neutralizes, and granulation is dried, pulverize sodium alginate; With the sea-tangle Digestive system water of gained towards rare be sea-tangle weight 80-200 doubly; The filter cloth that described no diatomite precoat filtration is used is a nylon cloth, and the filter cloth aperture is the 80-600 order.
During concrete operations, take by weighing sea-tangle 100Kg, use 1500Kg tap water soak at room temperature 2 hours, with cutting machine sea-tangle is cut into 10 * 20cm shape, draining is put into digester with sea-tangle, add the 3000Kg tap water, 10Kg yellow soda ash is in 65-70 ℃ of digestion 2.5 hours, coarse filtration, add tap water towards rare to 15000Kg, floating 24 hours, filter with the plate basket, the filter cloth aperture is 260 orders, adds the calcium chloride water calcification to filtrate, generates cotton-shaped water-insoluble calcium alginate, be 10% the continuous decalcification of hydrochloric acid 3 times with concentration expressed in percentage by weight again, generate alginic acid, squeeze to water content be 65-80%, pulverize, put into neutralization tank, add alcohol to flooding alginic acid, with 1 hour, final pH value was controlled at 7.5-8 in the usefulness aqueous sodium hydroxide solution, centrifugal, pulverize granulation, oven dry, pulverize, packing gets the 16Kg sodium alginate, and calcium contents is less than 0.1% in the gained sodium alginate, water-insoluble is less than 0.3%, and transparency is greater than 99.8%.
No diatomite precoat filtration described in the present invention is the filtration of plate basket, vacuumizing filtration or press filtration; Described filter cloth material is nylon, bolting silk or steel wire; Described hydrochloric acid decalcification is continuous decalcification, and the concentration expressed in percentage by weight of hydrochloric acid is 5-30%, and the decalcification number of times is 3-5 time; Described neutralization is the liquid phase neutralization, promptly neutralizes with sodium hydroxide in the organic phase medium.
Claims (3)
1, a kind of production method of high transparent sodium alginate is characterized in that the sea-tangle pre-treatment, and digestion is floating towards rare, with no diatomite precoat filtration, use the calcium chloride calcification, use the hydrochloric acid decalcification, dewaters, and neutralizes, and granulation is dried, pulverize sodium alginate; With gained sea-tangle Digestive system water towards rare be sea-tangle weight 80-200 doubly; The filter cloth that described no diatomite precoat filtration is used is a nylon cloth, and the filter cloth aperture is the 80-600 order.
2, the production method of high transparent sodium alginate as claimed in claim 1 is characterized in that described no diatom is coated with pre-soil layer and is filtered into the filtration of plate basket, vacuumizing filtration or press filtration.
3, the production method of high transparent sodium alginate as claimed in claim 2 is characterized in that the filter cloth material is nylon, bolting silk or steel wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102377755A CN101456920A (en) | 2008-12-02 | 2008-12-02 | Method for producing high transparent sodium alginate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102377755A CN101456920A (en) | 2008-12-02 | 2008-12-02 | Method for producing high transparent sodium alginate |
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| Publication Number | Publication Date |
|---|---|
| CN101456920A true CN101456920A (en) | 2009-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2008102377755A Pending CN101456920A (en) | 2008-12-02 | 2008-12-02 | Method for producing high transparent sodium alginate |
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| CN (1) | CN101456920A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101906174A (en) * | 2010-07-29 | 2010-12-08 | 中国水产科学研究院黄海水产研究所 | Improved method of fresh kelp high-efficiency pretreatment and algin extraction processes for chemical engineering |
| CN101955550A (en) * | 2010-07-29 | 2011-01-26 | 中国水产科学研究院黄海水产研究所 | Volume-reduction storage method of fresh kelp raw material for chemical industry |
| CN102180990A (en) * | 2011-04-15 | 2011-09-14 | 江南大学 | Method for preparing high-viscosity sodium alginate from kelp |
| CN103360511A (en) * | 2013-07-31 | 2013-10-23 | 青岛海之林生物科技开发有限公司 | Production process for self-solidifying sodium alginate |
| CN107059439A (en) * | 2016-12-20 | 2017-08-18 | 青岛明月海藻生物科技有限公司 | It is a kind of to improve the process of printing and dyeing level sodium alginate stability |
| WO2019128156A1 (en) * | 2017-12-26 | 2019-07-04 | 青岛明月海藻集团有限公司 | Sodium alginate, preparation method therefor and application thereof |
-
2008
- 2008-12-02 CN CNA2008102377755A patent/CN101456920A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101906174A (en) * | 2010-07-29 | 2010-12-08 | 中国水产科学研究院黄海水产研究所 | Improved method of fresh kelp high-efficiency pretreatment and algin extraction processes for chemical engineering |
| CN101955550A (en) * | 2010-07-29 | 2011-01-26 | 中国水产科学研究院黄海水产研究所 | Volume-reduction storage method of fresh kelp raw material for chemical industry |
| CN101955550B (en) * | 2010-07-29 | 2012-11-21 | 中国水产科学研究院黄海水产研究所 | Volume-reduction storage method of fresh kelp raw material for chemical industry |
| CN102180990A (en) * | 2011-04-15 | 2011-09-14 | 江南大学 | Method for preparing high-viscosity sodium alginate from kelp |
| CN102180990B (en) * | 2011-04-15 | 2012-06-20 | 江南大学 | Method for preparing high-viscosity sodium alginate from kelp |
| CN103360511A (en) * | 2013-07-31 | 2013-10-23 | 青岛海之林生物科技开发有限公司 | Production process for self-solidifying sodium alginate |
| CN103360511B (en) * | 2013-07-31 | 2016-01-20 | 青岛海之林生物科技开发有限公司 | A kind of production technique of self-solidifying type sodium alginate |
| CN107059439A (en) * | 2016-12-20 | 2017-08-18 | 青岛明月海藻生物科技有限公司 | It is a kind of to improve the process of printing and dyeing level sodium alginate stability |
| CN107059439B (en) * | 2016-12-20 | 2019-10-11 | 青岛明月海藻生物科技有限公司 | A kind of process improving printing and dyeing grade sodium alginate stability |
| WO2019128156A1 (en) * | 2017-12-26 | 2019-07-04 | 青岛明月海藻集团有限公司 | Sodium alginate, preparation method therefor and application thereof |
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Open date: 20090617 |