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Preparation method of sodium alginate

A technology of sodium alginate and kelp, applied in the field of preparation of sodium alginate, can solve the problems of complicated process, high production cost, unstable product quality and the like, and achieves the effects of strong operability, high product stability and simple process

Inactive Publication Date: 2015-01-28
西安莹朴生物科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This phenomenon has brought many difficulties to the production of alginate products. In the production process, due to the inability to effectively control the degradation process, the product quality is unstable.
The current process is complicated, the production cost is high, and the degradation is very serious. Its process reform is also imperative

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Wash the fresh kelp, dry it, weigh 1000g, cut it into sections, put it into the transformation tank, first add 100g of formaldehyde to soak the dried kelp, then add 10L of sodium carbonate solution with a concentration of 15g / L into the conversion tank, and stir React to obtain a paste-like glue solution, dilute the paste-like glue solution with water, foam the diluted glue solution through a foaming machine, and then flow into a floating sedimentation tank, where organic impurities float up, inorganic impurities sink, and the middle and lower parts are clear Liquid, floating time 4 hours, collect the middle and lower clear liquid into the decalcification tank, add dilute hydrochloric acid solution at the same time, make the flocculent calcium alginate into insoluble alginic acid, mince 100g of alginic acid, add it to the blender 1L of 20g / L sodium carbonate solution was stirred and reacted to obtain sodium alginate solution, and finally dried in a dryer at a low tempera...

Embodiment 2

[0015] Wash the fresh kelp, dry it, weigh 1000g, cut it into sections, put it into the transformation tank, first add 100g of formaldehyde to soak the dried kelp, then add 10L of sodium carbonate solution with a concentration of 12g / L into the conversion tank, and stir React to obtain a paste-like glue solution, dilute the paste-like glue solution with water, foam the diluted glue solution through a foaming machine, and then flow into a floating sedimentation tank, where organic impurities float up, inorganic impurities sink, and the middle and lower parts are clear Liquid, floating time 4 hours, collect the middle and lower clear liquid into the decalcification tank, add dilute hydrochloric acid solution at the same time, make the flocculent calcium alginate into insoluble alginic acid, mince 100g of alginic acid, add it to the blender 1L of 15g / L sodium carbonate solution was stirred and reacted to obtain sodium alginate solution, and finally dried in a dryer at a low tempera...

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Abstract

The invention relates to a preparation method of sodium alginate and belongs to the field of preparation methods for food additives. The preparation method comprises the following steps of cleaning, drying and sectioning fresh kelp, putting the fresh kelp into a conversion tank, adding formaldehyde with the weight being 10% of the weight of dried kelp for soaking, adding an alkaline-containing solution into the conversion tank, stirring for reaction, so as to obtain pasty glue solution, adding water to dilute the pasty glue solution, foaming the diluted glue solution by a foaming machine, flowing the diluted glue solution into a floating sedimentation tank, collecting clear liquid at the middle-lower part to enter a decalcifying tank, simultaneously adding a diluted hydrochloric acid solution so that flocculent calcium alginate becomes insoluble alginic acid, crushing alginic acid, adding a pure-alkaline solution into a neutralizing machine with the alkaline-adding amount being 10-20% of the weight of alginic acid, and stirring for reaction so as to obtain a sodium alginate solution, and finally drying the sodium alginate solution in a drying machine to obtain the sodium alginate. The preparation method has the characteristics of simple process, strong operability and the like, and is suitable for industrial production and high stability of products. The viscosity of the prepared sodium alginate reaches more than 1500cps, and is generally more than 1.5 times higher than the viscosity 1000cps in the traditional preparation method.

Description

technical field [0001] The invention relates to a preparation method of sodium alginate, which belongs to the field of food additive preparation methods. Background technique [0002] Sodium alginate, also known as sodium alginate, is a kind of natural polysaccharide extracted from the cell wall of brown algae. It is essentially a linear natural polymer. Sodium alginate is composed of β-D-mannuronic acid (M area) It is connected with α-L-guluronic acid (region G) through glycosidic bonds. [0003] The physical properties and gel properties of alginate depend on the relative composition of uronic acid residues and the distribution of the three regions. Because sodium alginate has good sol-gel properties, it is widely used in industry, agriculture, Medicine and many other fields, and shows a good application prospect. Sodium alginate will degrade to varying degrees no matter in aqueous solution or dry product containing a certain amount of water, which is characterized by th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/04
Inventor 李勇刘文斌
Owner 西安莹朴生物科技股份有限公司
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