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A technology of red algae polysaccharide and red algae, applied in the field of preparation of red algae polysaccharide
Active Publication Date: 2020-12-11
FUZHOU NEPTUNUS FUYAO PHARMA
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There are no other uses of propolis
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Embodiment 1
[0029] A preparation method of red algae polysaccharide, using Eucheuma genus Eucheuma in Rhodophyceae as raw material, washing Eucheuma with water, alkali treatment, washing to neutrality, drying, crushing, adding propolis, using hot acid The acid-soluble polysaccharides are extracted by the extraction method, and then the macromolecular polysaccharides are removed by alcohol precipitation. After recovering the ethanol from the remaining solution, let it cool, and filter to remove the propolis. The filtrate is filtered through an ultrafiltration membrane, concentrated by a nanofiltration membrane, and freeze-dried to obtain red algal polysaccharides. Rhodophyceae include plants of the genus Rhodophyceae, Glycyrrhizae, and Eucheuma. Other Rhodophyceae plants can also extract erythrophyll polysaccharides.
[0030] The specific method is as follows:
[0031] (1) Washing: Weigh 1 kg of Eucheuma, soak Eucheuma in 10 L of drinking water for 6 hours, and then wash away visible debr...
Embodiment 2
[0045] Take 1kg of the same batch of Eucheuma raw material as in Example 1, except that no propolis is added, other steps are completely carried out according to the method in Example 1. The red algae polysaccharide produced is compared with Example 1 as follows:
[0046]
[0047] Conclusion: From the comparison of the two examples, it can be seen that the addition of propolis can effectively reduce the total metal content of red algal polysaccharides.
[0048] In the present invention, the rhodophyceae plants are treated with alkali, washed with water to neutrality, dried and crushed, then propolis is added, the acid-soluble polysaccharides are extracted by hot acid extraction, and the macromolecular polysaccharide components are removed by alcohol precipitation, and the remaining After recovering ethanol from the solution, let it cool, filter to remove propolis, filter the filtrate through ultrafiltration membrane, concentrate with nanofiltration membrane, and freeze-dry ...
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Abstract
The invention belongs to the technical field of extraction of algal polysaccharides, and relates to a preparation method of red algal polysaccharides, which comprises the following steps: by using redalgal plants as raw materials, washing the raw materials with water, carrying out alkali treatment, performing washing to neutrality, performing airing, performing pulverizing, adding propolis, extracting acid-soluble polysaccharides from the propolis by using a hot acid extraction method, and removing macromolecular polysaccharide components by alcohol precipitation, recovering ethanol from theresidual solution, performing cooling, performing filtering to remove propolis, filtering the filtrate with an ultrafiltration membrane, concentrating with a nanofiltration membrane, and performing freeze-drying to obtain the red alga polysaccharide. The preparation method of the red alga polysaccharides can effectively reduce the content of heavy metals in the red alga polysaccharides, and combines the technologies of red alga polysaccharide extraction and heavy metal removal.
Description
technical field [0001] The invention belongs to the technical field of algae polysaccharide extraction, and in particular relates to a preparation method of red algae polysaccharide. Background technique [0002] Red algae polysaccharides are extracted from Rhodophyceae seaweed, and most of them are sulfate-rich polysaccharides. At present, carrageenan and agar gum are widely used. Carrageenan, also known as eucalyptus, Irish carrageenan, carrageenan, and carrageenan, is a hydrophilic colloid extracted from red algae seaweed such as euglena, agaric, and carrageenan. Its chemical structure It is calcium, potassium, sodium and ammonium salts of polysaccharide sulfate composed of galactose and anhydrogalactose; The hydrophilic colloid extracted from Algae seaweed (such as Geliflower) has coagulation, stability, and can form complexes with some substances. Agar, as a red algal polysaccharide, has high viscosity and low water solubility, and can be degraded to obtain The agar o...
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