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Method for preparing alginic acid and sodium alginate through air steam explosion coupling biological compound enzyme technology

A technology of biological compound enzyme and sodium alginate, which is applied in the field of modernization of traditional Chinese medicine, can solve the problems of low molecular weight of alginic acid, destroy effective substances, reduce product quality, etc., so as to improve product yield and product quality, reduce interference, and reduce production capacity. consumption effect

Inactive Publication Date: 2012-07-25
赵岩 +1
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Problems solved by technology

But on the one hand, compared with the traditional technology, the simple introduction of steam explosion technology can only break up the co-polymer of lignin, hemicellulose and cellulose inlaid with pectin in the plant cell wall into lignin, pectin, hemicellulose and For the dispersion of cellulose, these macromolecular polymers still exist, and they still need high-concentration sodium carbonate solution to digest for a long time. High, the longer the digestion time, the more alginic acid is degraded, the lower the molecular weight of alginic acid and sodium alginate obtained, the viscosity is greatly reduced, and the product quality is worse; on the other hand, in the process of steam explosion, because the steam explosion medium is Water vapor over 100°C, long-term high temperature will inevitably destroy the effective substances in kelp and reduce product quality

Method used

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  • Method for preparing alginic acid and sodium alginate through air steam explosion coupling biological compound enzyme technology

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Effect test

Embodiment 1

[0031] (1) Pre-treatment of raw materials: soak dried kelp in water for 1 hour to soften, wash to remove impurities such as sediment, cut into 5-15cm sections, and drench off the surface moisture;

[0032] (2) Air steam explosion treatment: place the kelp through the raw material pretreatment in the steam explosion tank, use air as the steam explosion medium, make the pressure in the blasting device 1.0MPa, and the blasting time is 5min;

[0033] (3) Biological compound enzyme treatment: suspend the kelp after the air explosion with 10 times the amount of water, add a biological compound enzyme preparation equivalent to 0.5% of the raw material mass (mass ratio: 15% cellulase, 20% acid protease, fruit Gluease 15%, α-amylase 15%, xylanase 20%, laccase 10%, mannanase 5%), hydrolyze at pH 5.5, 50°C for 3 hours;

[0034] (4) Digestion: add 1.0% aqueous sodium carbonate solution equivalent to 10 times the amount of raw materials to the system obtained through (3), and digest at 60°C ...

Embodiment 2

[0038] (1) Raw material pre-treatment: wash the fresh kelp with water to remove impurities such as sediment, cut it into 5-15cm sections, and drench off the surface moisture;

[0039] (2) Air steam explosion treatment: place the kelp through the raw material pretreatment in the steam explosion tank, use air as the steam explosion medium, make the pressure in the blasting device 1.5MPa, and the blasting time is 15min;

[0040] (3) Biological compound enzyme treatment: Suspend the kelp after air explosion with 10 times the amount of water, add biological compound enzyme preparation equivalent to 0.5% of raw material quality (mass ratio: 20% cellulase, 20% acid protease, fruit Gluease 10%, α-amylase 10%, xylanase 20%, laccase 15%, mannanase 5%), hydrolyze at pH 6 and 60°C for 2 hours;

[0041] (4) Digestion: add 0.5% aqueous sodium carbonate solution equivalent to 10 times the amount of raw materials to the system obtained after the treatment in (3), and digest at 40° C. for 1.0 ...

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Abstract

The invention relates to a method for preparing alginic acid and sodium alginate by using laminaria japonica, gulfweed and the like as raw materials through an air steam explosion coupling biological compound enzyme preparation. Compared with the normal methods, the method has the advantages of high yield, energy conservation, less use amount of chemical agents and the like, and is applicable to industrial mass production.

Description

technical field [0001] The invention belongs to the field of traditional Chinese medicine modernization, and relates to a method for preparing alginic acid and sodium alginate by using kelp and sargassum as raw materials for an air steam explosion combined biological compound enzyme preparation. Compared with the conventional method, the method has the advantages of high yield, energy saving, less consumption of chemical reagents, etc., and is suitable for large-scale industrial production. Background technique [0002] Alginic acid, its molecular formula is (C 6 h 7 o 6 ) n , with a relative molecular weight of about 32,000 to 200,000, is a polysaccharide carbohydrate extracted from brown algae kelp or sargassum, and is composed of 1,4-poly-β-D-mannuronic acid and α-L-gulo A linear polymer composed of uronic acid, and its derivatives include sodium alginate, calcium alginate, zinc alginate, iron alginate, potassium alginate, magnesium alginate, ammonium alginate, etc. ...

Claims

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Application Information

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IPC IPC(8): C08B37/04
Inventor 赵岩张连学吴鹏翟为金达明
Owner 赵岩
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