Method for extracting active polysaccharides from brown algae

A technology for active polysaccharide and brown algae, which is applied in the field of extracting active ingredients of natural products, can solve the problems of ecological environment threat, single product variety, water and energy consumption pollution, etc., and achieves the effects of improving yield, reducing toxic side effects and good water solubility.

Active Publication Date: 2012-04-18
张劲松
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

No matter which method is used, a large amount of industrial wastewater will be produced, which poses a serious threat to the ecological environment.
[0009] 2) The product variety is single, the quality is not good, and the added value is low
However, the above-mentioned studies all use medium-viscosity alginate as raw material, and have not fundamentally solved the problems of water and energy consumption and serious pollution in the traditional production process of sodium alginate.

Method used

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  • Method for extracting active polysaccharides from brown algae
  • Method for extracting active polysaccharides from brown algae
  • Method for extracting active polysaccharides from brown algae

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as figure 1 The process schematic diagram shown is carried out according to the following process:

[0041] 1) 1.5kg dry kelp powder is placed in a 10L extraction container;

[0042] 2) Take 1L of anhydrous formic acid and add 0.5L of water to make 1.5L of formic acid solution;

[0043] 3) Add 1.5L of the formic acid solution in step 2) to the extraction container in step 1), and stir fully to make the kelp powder evenly wet;

[0044] 4) The wetted material obtained in step 3) was heated to 100° C., kept warm for 20 minutes, and then distilled under reduced pressure until there was no obvious liquid in the extraction container.

[0045] 5) Add 5L of absolute ethanol to the extraction container after the vacuum distillation in step 4), fully stir, filter, and recover the ethanol by distillation of the filtrate, and the filter residue is dried kelp powder after organic acid pretreatment.

[0046] 6) Take 100 grams of organic acid pretreated kelp powder in step 5),...

Embodiment 2

[0056] 1) 1.5kg dry hijiki powder is placed in the extraction container;

[0057] 2) Take 180g of oxalic acid and add 2.0L of water to make an oxalic acid solution;

[0058] 3) Take 2L of the oxalic acid solution in step 2), add it to the extraction container in step 1), and stir fully to make the dried hijiki powder evenly wet;

[0059] 4) The material in step 3) was heated to 80° C., kept warm for 20 minutes, and then distilled under reduced pressure (the working pressure in the extraction container was 100 mmHg), until there was no obvious liquid in the extraction container.

[0060] 5) Add 5L of absolute ethanol to the extraction container after the vacuum distillation in step 4), fully stir, filter, and distill the filtrate to recover ethanol and oxalic acid, and the filter residue is dried to obtain organic acid pretreated hijiki powder.

[0061] 6) Take 100 grams of hijiki powder pretreated with organic acid in step 5), put it into a 1L beaker, add 500ml of distilled w...

Embodiment 3

[0070] 1) 1.5Kg dry macroalgae powder is placed in a 10L extraction container;

[0071] 2) Take 0.8L of anhydrous acetic acid and add 0.2L of water to prepare 1L of acetic acid solution;

[0072] 3) Take 1 L of the acetic acid solution in step 2), add it to the extraction container in step 1), stir well to make it evenly wet;

[0073] 4) The wetted material in step 3) was heated to 60° C., kept warm for 60 minutes, and then distilled under reduced pressure to remove the organic acid solution until there was no obvious liquid in the extraction container.

[0074] 5) After step 4), 5L of methanol was added to the container, fully stirred, filtered, and the filtrate was distilled to recover methanol, and the filter residue was dried to be the organic acid pretreated macroalgae powder;

[0075] 6) Take 100 grams of organic acid pretreated macroalgae powder dried in step 5), put it into a 1L beaker, add 500ml of distilled water, extract in a hot water bath at 70°C for 40 minutes, ...

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Abstract

The invention relates to a method for extracting active polysaccharides from brown algae. The method comprises the following specific steps of: putting a cleaned, dried and smashed alga raw material into an extraction container, and adding an organic acid solution or organic-inorganic mixed acid solution; heating a stirred and wetted material to 50-150 DEG C to realize partial degradation of highpolymer polysaccharide substances of brown algae; fully washing with an organic solvent till the acid solution in the material is discharged completely; adding 5-8 times of volume of water for extracting, concentrating an extracting solution, regulating the PH value to neutral, and gradually depositing in alcohol to obtain align, fucoidin and laminaran which are rich in mannuronic acid fragments (rich in M) respectively; and pretreating brown alga raw material residues with water-extracted organic acid according to an alkali digestion process to obtain align which is rich in guluronic acid fragments (rich in G). By adopting the method, the defects of high water consumption, severe pollution and the like existing in the conventional align production process are overcome; and the method has the advantages of saving in energy, reduction in emission, high product yield, small extraction solvent dosage, and the like.

Description

technical field [0001] The invention relates to the field of extracting active ingredients of natural products, in particular to a method for extracting active polysaccharides from brown algae. Background technique [0002] Seaweed is a general term for marine algae, usually fixed on the seabed or some solid structure, and is a single plant or a long series of simple plants composed of basic cells. The nutrients in seaweed include polysaccharides, proteins, lipids, pigments and low molecular substances. It has been proven by traditional Chinese medicine and current scientific research that the main components of substances in seaweed that can enhance immunity and anti-cancer activity are polysaccharides. [0003] Seaweed includes red algae, green algae, brown algae, etc. Currently, brown algae polysaccharides are the most researched and applied in seaweed polysaccharides. Brown algae is a class of higher algae, there are about 250 genera and more than 1500 species. The al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/04C08B37/00C08B30/04
Inventor 李明天张劲松刘志宇许磊
Owner 张劲松
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