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115 results about "Brown seaweed" patented technology

Method for preparing low molecular weight brown seaweed fucoidan sulfate

The invention relates to a method for preparing low molecular weight brown seaweed fucoidan sulfate. The method comprises a step of oxidatively degrading brown seaweed sulfated polysaccharides by hydroxyl radical and a step of ultrafiltration membrane separation and purification, wherein raw sugar of the brown seaweed sulfated polysaccharide is used as a raw material, the hydroxyl radical generated by the reaction of copper ions and hydrogen peroxide is adopted to oxidatively degrade the raw sugar of the brown seaweed sulfated polysaccharide, and the membrane separation technology is combined in the method for preparing the low molecular weight fucoidan sulfate from the brown seaweeds. In the preparation process, the oxidizing speed is uniform, the reacting condition is mild, and the controllability and repeatability are good; the copper ions are removed by a chelating column after the oxidation reaction is finished, so the operation process is simple. Furthermore, the pH value is adjusted by adding little acid and alkali, so the salt content in the product is low, and can be completely removed by a 300Da ultrafiltration membrane in the ultrafiltration membrane separation and purification process. The ultrafiltration membrane can effectively separate and purify the brown seaweed fucoidan with different molecular weights along with high separating speed and large treatment amount. The method is suitable for industrial production.
Owner:OCEAN UNIV OF CHINA

Preparation method of soft hygroscopic composite alginate dressing

The invention discloses a preparation method of a soft hygroscopic composite alginate dressing. The preparation method includes: subjecting sodium alginate extracted from brown seaweed and carboxymethyl chitosan to cross-linking modification to form carboxymethyl chitosan / sodium alginate mixed liquid; adding propylene glycol alginate, stirring, and mixing well to form wet-process spinning dope; taking calcium chloride solution as solidification liquid for first solidification bath and one of zinc chloride solution, magnesium chloride solution and copper chloride solution as solidification liquid for second solidification bath for wet-spinning to obtain fiber; subjecting the fiber to needle-punched nonwoven cloth processing, slitting, packaging and sterilizing processes to obtain the soft hygroscopic composite alginate dressing. The alginate dressing prepared by the method has functions of absorbing liquid, maintaining moisture, resisting bacteria and stopping bleeding; due to spatial effect of carboxymethyl in the dressing, acting force among fiber macromolecules is weakened, so that flexibility of the fiber is enhanced, personalized needs of patients on the dressing are met better, and the alginate dressing has good application prospect.
Owner:GUANGDONG TAIBAO MEDICAL SCI TECH

Application of brown seaweed polysaccharide, brown seaweed oligosaccharide as well as derivatives of brown seaweed polysaccharide and brown seaweed oligosaccharide in preparation of adsorbent for adsorbing atmospheric pollutants

The invention provides the application of brown seaweed polysaccharide, brown seaweed oligosaccharide as well as derivatives of the brown seaweed polysaccharide and the brown seaweed oligosaccharide in preparation of an adsorbent for adsorbing atmospheric pollutants, wherein the brown seaweed polysaccharide has the degree of polymerization more than 30, and the brown seaweed oligosaccharide has the degree of polymerization of 2-30; the absorbent is prepared by preparing the seaweed polysaccharide, the brown seaweed oligosaccharide as well as the derivatives of the brown seaweed polysaccharide and the brown seaweed oligosaccharide into a water solution or glycerin solution with the mass volume concentration of 0.1mu g/mL-2000mg/mL. The prepared adsorbent is very wide in application field. The using method of the adsorbent is as follows: the adsorbent is arranged in the nasal cavity in any acceptable way; for instance, the adsorbent can be arranged on safety appliances such as a mask, a face mask, a head sleeve, a helmet; the adsorbent is arranged close to an outlet of equipment for discharging the atmospheric pollutant in a room, a factory, an automobile and the like in any acceptable way; therefore, the adsorbent has good market application prospect.
Owner:MARINE BIOMEDICAL RES INST OF QINGDAO CO LTD

Method for coproducing fucoidan and seaweed fertilizer

InactiveCN103755831ASolve high water consumptionSolve the problem of waste water and residueOrganic fertilisersPlant growthFermentation
The invention discloses a method for coproducing fucoidan and a seaweed fertilizer. The method comprises the following steps: (1) extracting a brown seaweed component having a plant growth promoting function; (2) extracting the fucoidan; (3) preparing a seaweed fertilizer component 2; and (4) blending the seaweed fertilizer, namely completely adding the seaweed fertilizer component 1 obtained in the step (1) into the seaweed fertilizer component 2 obtained in the step (3), stirring and mixing uniformly, standing for precipitating for 2 hours, filtering and centrifuging to perform liquid-solid separation, wherein the obtained liquid and solid refer to a liquid seaweed fertilizer base and a solid seaweed fertilizer base respectively. According to the method for coproducing the fucoidan and the seaweed fertilizer, resources are fully utilized, and the fucoidan product and the seaweed fertilizer are produced by means of the processes of ethanol soaking extraction, probiotics fermentation and the like, so that the problems of high water consumption as well as generation of waste water and waste residues in the production of the fucoidan are solved fundamentally, the additional value of the brown seaweed industry is increased remarkably, and a remarkable ecologic benefit is achieved.
Owner:SHANDONG UNIV

Seaweed polysaccharide medicinal plant film coating and preparation method thereof

The invention relates to a drug tablet core coating technology, and specifically, relates to a seaweed polysaccharide medicinal plant film coating and a preparation method thereof. The seaweed polysaccharide medicinal plant film coating comprises a component A, a component B, and a water solvent, wherein the component A comprises seaweed polysaccharide and/or dietary vegetable fibers and the component B comprises one or more of modified starch, guar gum, edible pigment and brown seaweed polysaccharide. Specifically, the seaweed polysaccharide medicinal plant film coating comprises 5 to 15 wt% of the seaweed polysaccharide, 9 to 16 wt% of the dietary vegetable fibers, 1 to 3 wt% of the modified starch, 0.5 to 0.1 wt% of the guar gum, 0.1 to 1 wt% of the brown seaweed polysaccharide, based on the total weight of the seaweed polysaccharide medicinal plant film coating, 0.1 to 0.5ppm of the edible pigment, and the balance the water solvent. A film forming agent and the most of auxiliary additives adopted by the preparation method of the seaweed polysaccharide medicinal plant film coating are all high-molecular materials with excellent physiochemical performances. Therefore, after coating, the seaweed polysaccharide medicinal plant film coating has the effects of proofing moisture, avoiding light, covering peculiar smell and resisting wear, is difficult to mildew, is easy for disintegration, and improves greatly a drug dissolution rate, bioavailability and a period of drug validity.
Owner:INST OF OCEANOLOGY - CHINESE ACAD OF SCI

Method for coproduction of sodium alginate, mannitol and iodine by enzymolysis approach

The invention discloses a method for coproduction of sodium alginate, mannitol and iodine by enzymolysis approach. The method comprises the following steps of: taking brown seaweeds as the raw material, pretreating the raw material by a bio-enzymolysis approach, extracting iodine and mannitol from pretreated liquid, removing partial protein and the water soluble component seaweed residues for extraction and separation of sodium alginate, and finally, obtaining high-quality sodium alginate through a dilute alkali digestion process and by calcium solidification-ion exchange method. The method is characterized in that the seaweeds are pretreated by a biological enzyme, so that water soluble matters such as protein and the like therein are dissolved out in advance, which is advantageous for the subsequent extraction process of sodium alginate and the quality of the product and also for improving the product extraction ratio, and in such a way, the recycling of production water is realized finally; the process of extracting iodine and mannitol in the pretreated liquid is simple, and the production cost and the energy consumption are reduced; and compared with the existing industrial production process, more than 90% of water is saved, and the consumption of water resource and sewage drainage are greatly reduced so that environmental pollution is reduced.
Owner:QINGDAO BETTER BIO TECH
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