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Production technology of magnesium alginate

A technology of magnesium alginate and production technology, applied in the field of production technology of magnesium alginate, can solve problems such as inability to granulate, and achieve the effects of uniform finished product, low microbial content and white color

Active Publication Date: 2015-08-19
青岛海之林生物科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention adopts the granulation technology of the plunger extruder, which solves the disadvantage that the traditional granulator cannot granulate, and facilitates the subsequent crushing of magnesium alginate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Soak non-deteriorated kelp for 2 hours, chop, wash, fix color, digest with 12% soda ash for 6 hours, coarsely filter, foam, float, filter, dilute, calcify, acidify and decalcify, wash, squeeze and dehydrate, and crush to obtain alginic acid. Take 100kg of alginic acid and 7% alginic acid weight compound magnesium salt, put it into a solid-phase neutralization tank, and react for 50 minutes. During production, use a universal indicator to detect every 10 minutes, and judge the reaction end point according to the color displayed by the indicator. Centrifuge, extrude, and dry the fully reacted material, and crush it into a 40-mesh material. The 1% glue viscosity of the crushed material is 100mPa.s, the pH value is 6.0, the moisture content is 15.0%, and the ash content is 14%.

Embodiment 2

[0028] Soak non-deteriorated kelp for 2 hours, chop, wash, fix color, digest with 12% soda ash for 6 hours, coarsely filter, foam, float, filter, dilute, calcify, acidify and decalcify, wash, squeeze and dehydrate, and crush to obtain alginic acid. Take 100kg of alginic acid and 15% alginic acid weight compound magnesium salt, put it into a solid-phase neutralization tank, and react for 75 minutes. During production, use a universal indicator to detect every 10 minutes, and judge the reaction end point according to the color displayed by the indicator. Centrifuge, extrude, and dry the fully reacted material, and crush it into a 220-mesh material. The 1% glue viscosity of the crushed material is 2000mPa.s, the pH value is 8.0, the moisture content is 12.9%, and the ash content is 28%.

Embodiment 3

[0030] Soak non-deteriorated kelp for 2 hours, chop, wash, fix color, digest with 12% soda ash for 6 hours, coarsely filter, foam, float, filter, dilute, calcify, acidify and decalcify, wash, squeeze and dehydrate, and crush to obtain alginic acid. Take 100kg of alginic acid, put it into the neutralization tank that has added 60% vol and 10% alginic acid weight compound magnesium salt in advance, react for 60 minutes, use universal indicator to detect every 10 minutes during production, according to the color displayed by the indicator, Determine the end point of the reaction. Centrifuge, extrude, and dry the fully reacted material, and crush it into a 320-mesh material. The 1% glue viscosity of the crushed material is 980mPa.s, the pH value is 6.9, the moisture content is 13.1%, and the ash content is 21%.

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Abstract

The invention provides production technology of magnesium alginate. The production technology comprises the following steps: (1) preparing alginic acid from brown algae via alkali digestion; (2) adding alginic acid and a certain amount of composite magnesium salt into a reactor, and reacting for 50-75 min till alginic acid and composite magnesium salt are neutralized and are completely converted to magnesium alginate, wherein the neutralization reaction comprises a solid-phase neutralization reaction and a liquid-phase neutralization reaction taking alcohol as a medium; (3) using the composite magnesium salt with the amount being 7-15% of that of alginic acid; (4) taking magnesium chloride and basic magnesium salt, the ratio of which is 10-20:80-90, to prepare the composite magnesium salt, wherein (5) the basic magnesium salt comprises one or more of magnesium bicarbonate, magnesium hydroxide, magnesium carbonate, magnesium oxide, magnesium acetate, and magnesium silicate; and (6) performing centrifugation, plunger extruding granulation, drying, and pulverizing to prepare magnesium alginate with a required mesh size. Magnesium alginate prepared in the invention has the viscosity in a range of 100-2000 mPa.s, the mesh size in a range of 40-320 mesh, the pH value in a range of 6.0-8.0, a water content no more than 15.0%, and an ash content in a range of 14-28%. The production technology can be realized in a condition of conventional solid-phase, and liquid-phase neutralization production technology of algin.

Description

technical field [0001] The invention relates to a production process of magnesium alginate. Background technique [0002] Magnesium alginate mainly exists in the cell walls of brown algae plants. It is a copolymer formed by connecting mannuronic acid and guluronic acid through 1,4 glycosidic bonds. It is made by digestion and extraction of algal bodies. Natural polysaccharides. Common alginate products on the market include monovalent alkali metal salts of alginic acid such as water-soluble sodium alginate, potassium alginate and ammonium alginate, and divalent metal salts of alginic acid such as water-insoluble calcium alginate (except magnesium and mercury). There are many manufacturers of the above-mentioned common alginates with complete product specifications and extensive application development. Magnesium alginate is a new type of alginate, and the characteristics of the product are quite different from other well-known alginate products. Magnesium alginate is wid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/04B29B9/06
Inventor 陈宏时慧刘晶营刘兴勇崔冰孙暖暖
Owner 青岛海之林生物科技开发有限公司
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