Extraction, separation and purification process of brasenia schreberi polysaccharide
A technology for separation and purification of seaweed, applied in the field of extraction and separation and purification of seaweed polysaccharide, can solve the problems of high viscosity of seaweed polysaccharide, restricting the development of seaweed industry, low extraction yield, etc., and achieves good separation and purification effect and better separation and purification effect Effect
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[0026] (1) Extraction of crude Brasenia polysaccharides:
[0027] (1.1) Crush Brasenia serrata to 100-200 mesh, and put the smashed Brasenia serrata to supercritical CO 2 In the extraction kettle, seal the kettle, remove the air, and introduce the carrier agent to extract the extract. The extraction temperature is 45.2℃, the extraction pressure is 21.3MPa, the extraction carbon dioxide flow rate is 25L / h, the carrier agent is distilled water, and the dosage is 420ml / kg , Extract 4h;
[0028] (1.2) Add a mixture of chloroform and n-butanol to the extract and shake it well, centrifuge at 3000 r / min for 10 min, and take the supernatant I. The volume ratio of chloroform and n-butanol in the mixture is 4:1 , The volume ratio of the extraction liquid to the mixed liquid is 4:1;
[0029] (1.3) Adjust the supernatant liquid to pH 8.0 with NaOH, then add activated carbon to the supernatant liquid for decolorization and suction filtration to obtain the filtrate; further use distilled water to...
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