Preparation method of red alga polysaccharide
A technology of red algae polysaccharide and red algae, applied in the field of preparation of red algae polysaccharide
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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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