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Method for preparing sodium alginate from kelp

A technology of sodium alginate and macroalgae, applied in the field of sodium alginate products, can solve the problems of time-consuming production, high product cost, slow growth rate, etc., and achieve the effects of being beneficial to harvesting, improving product quality, and reducing production costs

Active Publication Date: 2009-11-25
青岛聚大洋藻业集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most of the production of sodium alginate is based on kelp, and its preparation process includes desalination kelp, soaking and washing, digestion, dilution, foaming and floating, filtration, calcification, decalcification, dehydration, neutralization, granulation and drying And milling, there are many steps, and the production is time-consuming; and due to the influence of various factors such as temperature difference from north to south, light, etc., the growth and maturity of kelp may be early or late, and kelp in the same sea area or on the same seedling rope, Its maturity period also has a sequence, so the harvest period lasts from mid-May to early July, and the growth rate is relatively slow, resulting in high product costs

Method used

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Effect test

specific Embodiment 1

[0051] Specific embodiment one: a kind of preparation method of sodium alginate adopts giant algae as raw material, and its preparation steps are as follows:

[0052] 1. Macroalgae pretreatment

[0053] (1) Macroalgae soaking and color fixation

[0054] Add tap water with 1 times the amount of macroalgae in the soaking tank, and add formaldehyde solution with 10% of the macroalgae content, then throw the macroalgae evenly into the soaking tank, soak for 16±0.5 hours, when the formaldehyde solution is completely absorbed by the macroalgae, Then add tap water to above the macroalgae and soak for 20 hours.

[0055] (2) cut vegetables

[0056] When the soaking time is reached, the color-fixing water is discharged, the macroalgae is transferred into the vegetable cutter and chopped, and the chopped macroalgae is washed with water and then pumped into the digestion pot with hot water.

[0057] 2. Digestion

[0058] The temperature of the macroalgae pumped into the digester is co...

specific Embodiment 2

[0102] Specific embodiment two: a kind of preparation method of sodium alginate, adopt macroalgae as raw material, and its preparation steps are as follows:

[0103] 1. Macroalgae pretreatment

[0104] (1) Macroalgae soaking and color fixation

[0105] Add tap water with 1.5 times the amount of macroalgae in the soaking tank, and add formaldehyde solution with 12% of macroalgae content, then throw the macroalgae evenly into the soaking tank, soak for 16±0.5 hours, when the formaldehyde solution is completely absorbed by the macroalgae, Then add tap water to above the macroalgae and soak for 21 hours.

[0106] (2) cut vegetables

[0107] When the soaking time is reached, the color-fixing water is discharged, the macroalgae is transferred into the vegetable cutter and chopped, and the chopped macroalgae is washed with water and then pumped into the digestion pot with hot water.

[0108] 2. Digestion

[0109] The temperature of the macroalgae pumped into the digester is contr...

specific Embodiment 3

[0153] Specific embodiment three: a kind of preparation method of sodium alginate, adopt macroalgae as raw material, and its preparation steps are as follows:

[0154] 1. Macroalgae pretreatment

[0155] (1) Macroalgae soaking and color fixation

[0156] Add tap water with 2.5 times the amount of macroalgae in the soaking tank, and add formaldehyde solution with 14% of macroalgae content, then throw the macroalgae evenly into the soaking tank, soak for 16±0.5 hours, when the formaldehyde solution is completely absorbed by the macroalgae, Then add tap water to above the macroalgae and soak for 23 hours.

[0157] (2) cut vegetables

[0158] When the soaking time is reached, the color-fixing water is discharged, the macroalgae is transferred into the vegetable cutter and chopped, and the chopped macroalgae is washed with water and then pumped into the digestion pot with hot water.

[0159] 2. Digestion

[0160] The temperature of the macroalgae pumped into the digester is con...

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Abstract

The invention relates to a method for preparing sodium alginate from kelp, which adopts kelp as a raw material. The preparation process of the method comprises raw-material pretreatment, digestion, calcification, decalcification, dehydration, neutralization, drying, blending and milled-powder packaging, wherein flocculant is adopted for foamed floating during digestion. As the kelp is one of plants growing fastest in the world, the kelp can be cultured on a large scale in continental-shelf sea areas, and leaves of ripe kelp concentrating on the surface of seawater are beneficial to harvesting, so that production cost is reduced. The method also adopts the flocculant for foamed floating, thereby having the advantages of shortening floating time and improving product quality.

Description

technical field [0001] The invention relates to sodium alginate products in marine chemical industry, in particular to a method for producing sodium alginate by using giant algae. Background technique [0002] At present, most of the production of sodium alginate is based on kelp, and its preparation process includes desalination kelp, soaking and washing, digestion, dilution, foaming and floating, filtration, calcification, decalcification, dehydration, neutralization, granulation and drying And milling, there are many steps, and the production is time-consuming; and due to the influence of various factors such as temperature difference from north to south, light, etc., the growth and maturity of kelp may be early or late, and kelp in the same sea area or on the same seedling rope, Its maturity period also has a sequence, so the harvest period lasts from mid-May to early July, and the growth rate is relatively slow, resulting in high product costs. Contents of the inventi...

Claims

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Application Information

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IPC IPC(8): C08B37/04
Inventor 吴仕鹏程跃谟冯启忠徐相卿孙梅郭华玉
Owner 青岛聚大洋藻业集团有限公司
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