161 results about "Brown algae" patented technology

The invention belongs to the field of agricultural chemistry and bio-fertilizer, and discloses a fertilizer synergist based on polyaspartic acid, alginate oligosaccharide and mannan oligosaccharide and a preparation method of the fertilizer synergist. According to the synergist, polyaspartic acid derived from plant source amino acid, alginate oligosaccharide extracted from natural brown algae and mannan oligosaccharide extracted from plants are used as main raw materials, and the polyaspartic acid, the alginate oligosaccharide and the mannan oligosaccharide cooperate to form an induction-complexation-adsorption three-effect-in-one mechanism, wherein the alginate oligosaccharide and the mannan oligosaccharide induce plant root activity and stress resistance gene expression; the polyaspartic acid is dominated to form a multi-point weak complex network, so that slow release and controlled release of nitrogen and potassium ions are realized; the three components cooperate on the surface of soil colloid to form an adsorption layer, and nutrient leaching loss is reduced. The preparation process adopts a green process of'enzymatic pretreatment-segmented complexing-low-temperature forming ', so that the oligosaccharide activity is maintained, and the use of an organic solvent is avoided. The obtained synergist can significantly improve the nitrogen utilization rate and the root activity and prolong the fertilizer efficiency period, and is suitable for green and efficient agricultural production of various crops.

The invention belongs to the technical field of soil improvement, and relates to a soil conditioner for saline-alkali soil and a soil improvement method. The soil conditioner comprises vinegar residues, chitin, glucose, a composite biological preparation, a modified gel and a functional additive, the composite biological agent comprises bacillus subtilis powder, bacillus licheniformis powder, trichoderma spore powder, brown algae powder and light calcium carbonate; the functional auxiliary agent comprises modified bentonite, polyglutamic acid, pregelatinized starch and biochar potassium humate. Through the synergistic effect of multiple components and structural design optimization, systematic remediation of physical properties, chemical properties and biological activity of the saline-alkali soil is achieved. According to the technology, the limitation of single function of a traditional improvement measure is broken through, and the long-standing technical problems of return salt rebound, low fertility, microbial community imbalance and the like in saline-alkali soil treatment are effectively solved by constructing a multi-layer and multi-dimensional soil improvement system.

The invention relates to the field of pharmacy, and discloses a Chinese herbal medicine and marine extract combined antibacterial and anti-inflammatory pharmaceutical composition which comprises the following components in parts by weight: 5-10 parts of baicalin extract; 3 to 7 parts of an andrographolide extract; 2-5 parts of sulfated brown algae polysaccharide; 0.2 to 1 part of sponge extract; wherein the baicalin extract is derived from roots of scutellaria baicalensis and is obtained by extracting with an ethanol-water mixed solvent; the andrographolide extract is derived from the whole herb of andrographis paniculata and is obtained by extracting with an ethanol-water mixed solvent; the sulfated fucoidan is derived from fucoidan and is prepared by enzymolysis and alcohol precipitation methods; the sponge extract is derived from sponge and is obtained by organic solvent extraction, separation and purification. By adopting the technical scheme of synergistically compounding the Chinese herbal medicine active ingredients and the marine extract, the technical effects of destroying a biological membrane barrier and removing stubborn infection lesions in treatment of bacterial vaginitis, candida vaginitis associated biological membrane infection and cervicitis are achieved.

A carbon-sequestering concrete composition and method of production are disclosed. The composition comprises geopolymer binder components, aggregates, and alginate beads formed from brown algae powder through ionic gelation. The alginate beads significantly increase CO2 absorption surface area compared to algae powder, creating a matrix across the concrete surface that enhances long-term sequestration and improves durability. The beads interact synergistically with other concrete components, including geopolymers, fly ash, and ground granulated blast furnace slag, to enhance pozzolanic reactions and create additional sites for carbon dioxide capture. The alginate beads also facilitate the dissolution of minerals like olivine, further enhancing carbon capture. The composition demonstrates superior carbon sequestration capabilities, enabling sustained CO2 absorption throughout its service life. The method includes forming alginate beads, incorporating them into the concrete mixture, and allowing for initial hardening and drying processes that promote carbon dioxide absorption directly from the air.

The invention discloses a method for determining the content of monosaccharide in seaweed, and belongs to the technical field of biological detection. According to the method, an ion chromatography sugar separation system is adopted, a pulse ampere detector is combined, CarboPac PA20 is used as a sugar analysis column, and the eight monosaccharide components in the seaweed can be detected under the limited extraction and purification method. The method is low in detection limit, good in stability and suitable for measuring the content of free monosaccharide and polysaccharide hydrolyzed monosaccharide in common algae (such as brown algae, green algae and red algae).

The invention provides a temperature-increasing oxygen-increasing agent for waterlogging type medium and low yield fields and a preparation method of the temperature-increasing oxygen-increasing agent. The temperature-increasing oxygen-increasing agent is prepared from the following raw materials in parts by weight: 80 to 130 parts of tea seed cakes, 80 to 110 parts of aged chicken manure, 140 to 180 parts of straw powder, 7.7 to 10 parts of beneficial bacteria, 0.3 to 0.8 part of alginate oligosaccharide, 9.5 to 12 parts of silicon-calcium-magnesium ore powder, 200 to 220 parts of activated humic acid and 340 to 430 parts of calcium peroxide. The fertilizer has comprehensive nutrients, can effectively improve the utilization rate of the fertilizer, improve the soil structure and promote production and income increase, takes organic matters as a carrier, is added with a large amount of activated humic acid and silico-calcium-magnesium ore powder, has strong chelating ability, promotes the formation of soil aggregates and improves the absorption and utilization rate of plant nutrients, and has good application prospects through a unique coating technology. The active ingredients and the granulation rate of the product are effectively improved.

The invention relates to the technical field of soil improvement, and discloses a soil improvement fertilizer and application thereof in saline-alkali soil improvement, a preparation method of the soil improvement fertilizer comprises the following steps: mixing cow dung, chicken manure and straw, and carrying out anaerobic fermentation to obtain an organic fertilizer; mixing soybean, corn and seaweed, performing enzyme catalysis treatment, and extracting to obtain an amino acid liquid fertilizer; soaking brown algae in hot water, filtering and concentrating to obtain a seaweed extract; uniformly mixing silicate minerals, natural gypsum powder, the organic fertilizer, the amino acid liquid fertilizer and the seaweed extract, and sequentially drying and crushing to obtain the soil improvement fertilizer. According to the soil improvement fertilizer disclosed by the invention, various components such as the organic fertilizer, the amino acid liquid fertilizer, the seaweed extract, the silicate minerals and the gypsum powder are meticulously proportioned, so that the soil fertility can be remarkably improved, the soil structure is optimized, the growth of plant root systems is promoted, the stress resistance of plants is enhanced, and the sustainable utilization of soil is improved for a long time.

The present invention pertains to optical wave guides (ie structures that guide waves by restricting the transmission of energy to one direction) buoys, anchors, and climate change. The Algal Wave Guide directs energy to Algae in maritime and lake environments in order to expand the viable range of highly productive carbon sequestering environments such as the Brown Algae among others. Sequestering carbon at sea has several advantages over terrestrial methods such as lower cost, surface availability compared to land based real estate, reduced infrastructure, increased fishery quotas, commercial chemical and lubricant production, tourism, fertilizer inputs, etc.

A soil conditioner belongs to the technical field of soil improvement, and comprises, by mass, 8-12 parts of chitosan oligosaccharide, 2-3 parts of cellulose oligosaccharide, 5-10 parts of alginate oligosaccharide, 2-6 parts of licorice oligosaccharide, 30-40 parts of humic acid, 5-8 parts of a microbial agent, 10-20 parts of minerals, and 5-10 parts of manganese oxide modified charcoal. According to the invention, oligosaccharide is used as an inducer, humic acid is used for constructing a soil skeleton, microorganisms are used for realizing nutrient circulation, and mineral substances and manganese oxide modified charcoal are used for providing long-acting support, so that biostimulation is used as a guide, the soil structure is adjusted, microbial flora is improved, and the crop yield is increased; the heavy metal polluted soil condition is improved.

The invention discloses a bio-organic fertilizer for enhancing disease resistance of plants, and relates to the field of bio-organic fertilizers. The organic fertilizer is prepared by compounding brown algae residues, corn straws, composted chicken manure, sodium lignin sulfonate, a compound microbial agent and alginic acid-carboxymethyl cellulose composite gel. The preparation process comprises the following steps: a raw material pretreatment stage: crushing and drying brown algae residues, mixing the crushed and dried brown algae residues with corn straws subjected to alkaline hydrolysis treatment and decomposed chicken manure, and adding sodium lignin sulfonate for pre-fermentation; the compound microbial agent is compounded after being cultured step by step through bacillus subtilis and streptomycete; alginic acid and carboxymethyl cellulose are subjected to ionic crosslinking and ultrasonic treatment to form a three-dimensional gel network; mixing the pretreated substrate, the complex microbial inoculant and the gel, performing three-stage fermentation of heating, high temperature and cooling, granulating, and forming the slow-release particles by adopting a starch-alginic acid coating.

The invention belongs to the technical field of preparation of feed additives, and particularly relates to a method for preparing seaweed-based polysaccharide for feed based on composite low-value brown algae. According to the method, multiple kinds of composite low-value brown algae are adopted as raw materials for the first time, composite alkali liquor is creatively heated to assist ultrasonic extraction to prepare the seaweed-based polysaccharide for the feed, and in some embodiments of the method, compared with an ultrasonic extraction method without alkali heating, the polysaccharide extraction rate is increased by 1.2 times through composite alkali liquor heating to assist ultrasonic extraction. The used raw material is low-value brown algae which is wide in source and low in cost; the preparation process is simple to operate, clear in parameters of each step and easy to realize industrial production. The prepared seaweed-based polysaccharide for the feed is convenient to add in the feed, can remarkably improve the growth performance of animals, enhance the immunity and improve the intestinal health, has good economic benefits and social benefits, has wide application prospects in the feed industry, and is high in practicability.

The invention discloses a method for preparing high-purity brown algae oligosaccharide, and belongs to the field of marine chemical technology. The method for preparing brown algae oligosaccharide of the invention comprises the following steps: after sodium alginate is divided into three times for enzymatic hydrolysis, the enzymatic hydrolysis liquid is ultrafiltered to obtain a brown algae oligosaccharide clear liquid; the brown algae oligosaccharide clear liquid is spray-dried to obtain the brown algae oligosaccharide. In the invention, the sodium alginate has a high degree of degradation, the obtained brown algae oligosaccharide has a high purity, and the production process is safe and efficient.

The invention provides a stepped directional extraction method of fucoidan, and relates to the technical field of extraction of active ingredients of algae. The method comprises the following steps: pretreating brown algae powder by microwaves and ultrasonic waves, mixing the pretreated brown algae powder with a deep eutectic solvent, and carrying out ultrasonic extraction to obtain algin; the eutectic solvent is composed of choline chloride and lactic acid according to the molar ratio of 1: (1-3). According to the method disclosed by the invention, a microwave-ultrasonic synergistic wall-breaking coupling deep-eutectic solvent extraction process is adopted, so that the yield of algin is increased to 73.2%, meanwhile, an additional toxic chemical chelating agent does not need to be added, the effect of effectively adsorbing heavy metal ions is achieved, and the biological safety and commercial value of the product are greatly improved.

The invention relates to the technical field of open tile windows, in particular to an open tile window with sea moon as a raw material and a preparation method thereof, and the open tile window comprises a base material layer, a functional layer and a supporting structure; the base material layer is made of a transparent plate which is formed by mixing and hot-pressing a raw material and modified nano cellulose; the aurelia raw material is prepared by mixing a seaweed extract and pretreated aurelia shell powder; the functional layer is arranged on the surface of the base material layer and is a composite film prepared by a chemical vapor deposition process; the supporting structure is an aluminum alloy frame and is combined with the base material layer through laser welding. According to the invention, the raw material components are optimally proportioned, so that the components play a targeted role in improving the performance of the open tile window, and a foundation is laid for the overall performance. Wherein the sea moon raw material is composed of an algin extract and pretreated sea moon shell powder, and sodium alginate in the algin extract has excellent cohesiveness and light transmission.

The application provides a kind of cement-like solidification characteristics and mineral flavor seaweed mayonnaise and its preparation method, based on the principle of multistage homogenization in cement production, heat treatment and particle grading, porous activated carbon particles prepared by carbonization of brown algae fermentation are graded and matched, combined with ladder type homogenization emulsification process, the cement-like solidification gel characteristics are realized;The activated carbon particles of brown algae are calcined at high temperature to form a multistage pore structure, and form a cement-like mineral flavor in cooperation with black pepper powder, smoked chili powder, clove powder, litsea cubeba powder, catnip powder and garlic powder, etc.The product prepared by the application has unique touch, low-fat characteristics and functional dietary fiber, and is suitable for building theme catering and health food field.

The present application relates to the field of pharmacy, disclose the medicine composition for antibacterial and anti-inflammatory of Chinese herbal medicine and marine extract combination, including: baicalin extract 5~10 parts; andrographolide extract 3~7 parts; sulfated fucoidan 2~5 parts; spongin extract 0.2~1 part; wherein: baicalin extract is derived from the root of scrophulariaceae, is extracted by ethanol-water mixed solvent; andrographolide extract is derived from the whole plant of andrographis, is extracted by ethanol-water mixed solvent; sulfated fucoidan is derived from brown algae, is prepared by enzymolysis and alcohol precipitation method; spongin extract is derived from sponges, is extracted and separated and purified by organic solvent. Through the technical scheme of the synergistic combination of active ingredients of Chinese herbal medicine and marine extract, the technical effect of destroying the biofilm barrier and clearing the stubborn infection focus in the treatment of bacterial vaginitis, candida vaginitis and cervical inflammation associated with biofilm infection is achieved.

The invention discloses a microbial fertilizer for relieving continuous cropping obstacles of celery and application of the microbial fertilizer, and belongs to the field of biological agriculture and resource environment. The microbial fertilizer provided by the invention comprises the following components: bacillus subtilis, bacillus velezensis, paenibacillus polymyxa, trichoderma harzianum, glucose, polyacrylamide and alginate oligosaccharide. Experimental results show that the microbial fertilizer is applied to stem bases 15 days after celery seedling emergence and applied to planting furrows or planting holes before seedling culture celery transplanting, the seedling protection rate and yield of celery in continuous cropping soil are remarkably increased, and the celery planting cost is reduced by strengthening disease prevention and treatment. The microbial fertilizer has the advantages of low cost, safety, no toxicity, environment friendliness and the like, and the fertilizing method is simple, convenient and feasible. The invention provides a new method for relieving celery continuous cropping obstacles, and has remarkable economic benefits and wide application prospects.

The present application discloses a seaweed active ingredient and a gradient extraction process thereof, and belongs to the field of seaweed extraction technology. The gradient extraction process of the seaweed active ingredient comprises the following steps: harvesting freshly salvaged seaweed, washing impurities on its surface with seawater, then slicing and adding sodium carbonate solution to stir, to obtain seaweed slurry; adding ethanol thereto and stirring, and obtaining a precipitate and an ethanol extract 1 after extrusion; adding ethanol to the precipitate and stirring, and then centrifuging to obtain a crude alginate extract and a supernatant 1, which is evaporated to recover ethanol and obtain a crude fucoidan extract; adding water to the ethanol extract 1 and stirring, and then centrifuging to obtain a crude fucoxanthin extract and a supernatant 2, which is evaporated to recover ethanol and obtain a crude brown algae polyphenol extract. The gradient extraction process can obtain crude extracts of multiple active ingredients at the same time, and does not require the use of a large amount of fresh water resources and toxic reagents, does not generate waste, is simple to operate, and has low cost, which is conducive to promotion and application.

The invention provides a brown algae extract helpful for adjusting in-vivo fat functions. The brown algae extract is extracted from brown algae fermentation liquor; the mass ratio of the effective components in the brown algae fermentation liquor is 50-80%; the effective component comprises oligosaccharide with the polymerization degree of 2 to 10. The brown algae extract provided by the invention does not cause toxic reaction to mice, and has food safety. The brown algae extract provided by the invention has relatively good effects of improving abnormal blood fat metabolism of high-fat diet rats and relieving fat accumulation in bodies.

The invention discloses a special water and fertilizer integrated organic fertilizer for rosa roxburghii tratt and a fertilization method. The feed additive is prepared from the following components in parts by mass: 3-5 parts of glucose, 3-5 parts of bacillus subtilis, 5-8 parts of aspergillus niger, 5-8 parts of lactobacillus plantarum, 10-16 parts of saccharomycetes, 1-3 parts of cellulase, 12-18 parts of papain, 20-30 parts of roxburgh rose pomace, 45-60 parts of brown algae, 45-60 parts of deep-sea fish leftovers and 80-100 parts of purified water. The preparation method comprises the following steps: crushing and mixing the raw materials, fermenting for 5-8 days, and filtering to obtain the brown water-soluble fertilizer. The special organic fertilizer avoids the problems of poor solubility and pipeline blockage of organic fertilizer products, realizes cyclic utilization of the roxburgh rose pomace, and enhances the environmental adaptability of soil; rosa roxburghii growth is promoted, and yield is increased.

The present invention provides a preparation process of L-fucose, and relates to the technical field of electrolytic production of organic compounds. The preparation process uses brown algae as raw material, hydrolyzes it with a mixed acid solution of concentrated hydrochloric acid and concentrated phosphoric acid, adjusts the pH value, electrolyzes the hydrolyzate, uses a graphite electrode as an anode, and a silver electrode with a surface modified with thiol-β-cyclodextrin as a cathode. After the electrolysis is completed, L-fucose is eluted, and column chromatography separation and recrystallization are performed. The method described in the present invention improves the extraction rate and extraction efficiency of L-fucose relative to the prior art, simplifies the operation steps, and is conducive to industrial large-scale acquisition of L-fucose.

The invention relates to the technical field of skin care products, in particular to a preparation method and application of a marine algae composition with anti-wrinkle, anti-inflammatory and repairing effects. Comprising the following steps: crushing brown algae and extracting to obtain brown algae extract; hydrolyzing the red algae and extracting to obtain a red algae extract; culturing chlorella and extracting to obtain a chlorella extract; the preparation method comprises the following steps: weighing 10-20% by weight of brown algae extract, 5-10% by weight of red algae extract, 2-5% by weight of chlorella extract and the balance of auxiliary materials, and uniformly mixing to obtain a composition; the skin care product is prepared by weighing the following components in percentage by weight: 10-15% of hydroxypropyl starch, 1-3% of beewax, 1-4% of stearic acid, 1-5% of a composition and the balance of deionized water, firstly, algae are treated through a physical mode and enzyme, release of effective components is improved, and consumption of polysaccharide is reduced; in addition, the diatomite is matched with wall-breaking extraction of brown algae, so that the extraction of effective active ingredients is further improved; and finally, through compatibility of the brown algae extract, the hydrolyzed red algae extract and the chlorella extract, excellent anti-wrinkle, anti-inflammatory and anti-aging effects are generated.

Combinations of biostimulants including biostimulant compositions having selected amino acids and oligopeptides derived from legumes by enzymatic hydrolysis and added micronutrients and phytoregulator compositions having L-proline, kaolin, and optionally brown algae is provided.

This invention belongs to the field of pharmaceutical technology, specifically relating to an alginate oligosaccharide, its preparation method, and its applications. Using brown algae as raw material, the invention first removes impurities from the algae, then extracts it through subcritical acid water, followed by neutralization, decolorization, heavy metal removal, membrane ultrafiltration / nanofiltration purification, and spray drying to obtain high-purity saturated alginate oligosaccharides with a specific degree of polymerization distribution. These alginate oligosaccharides can increase butyrate production by intestinal flora and exert a laxative effect. The alginate oligosaccharide and its preparation method provided by this invention directly use brown algae as raw material, overcoming the drawbacks of traditional methods that first prepare alginate and then hydrolyze it to prepare alginate oligosaccharides, greatly shortening the process steps and improving production efficiency. The alginate oligosaccharides provided by this invention have high purity and broad application potential in the preparation of intestinal health drugs, health products, or dietary supplements.

The invention discloses preparation and application of algal polysaccharide-based co-drug-loading tumor targeting nanoparticles. The algal polysaccharide-based co-drug-loaded nano particle disclosed by the invention is a self-assembled targeting nano particle co-constructed by biotin modified algal polysaccharide sulfate and arginine modified chitosan. The algal polysaccharide-based co-drug-loaded nano particle disclosed by the invention is an algal polysaccharide-based co-drug-loaded nano particle. The algal polysaccharide-based nanoparticles encapsulate anti-tumor hydrophilic drugs and hydrophobic drugs to realize targeted co-delivery of the drugs in solid tumor tissues, self-assembly is generated through electrostatic interaction of polysaccharide molecules to drive the encapsulated drugs to enter inner cores of the nanoparticles, and meanwhile biotin molecules are mainly distributed in shell layers of the nanoparticles. According to the algal polysaccharide-based co-drug-loading nano particle, the targeting property to solid tumor tissues is enhanced, the defect that a conventional drug-loading system can only encapsulate a single hydrophilic or hydrophobic drug is innovatively overcome, efficient co-delivery of hydrophilic and hydrophobic drugs with different attributes is realized, and proliferation and migration of tumors can be remarkably inhibited.

The application discloses a kind of anti-reverse tolerance of poor root flower planting slow-release fertilizer and its preparation method, the slow-release fertilizer includes 30-45 parts of seaweed residue, humic acid 15-25 parts, diatomite 10-20 parts, oyster powder 5-15 parts, plant protein glue 3-8 parts, polyglutamic acid 1-3 parts, bacillus mucilaginosus powder 0.5-2 parts, brown algal oligosaccharide 0.1-0.5 parts, potassium silicate 2-5 parts, ammonium molybdate 0.05-0.15 parts, silicon phytic acid ester 0.5-2 parts, by introducing silicon phytic acid ester, fertilizer particles can be adjusted according to soil humidity release rate of nutrients, lock up nutrients in drought, accelerate release in wet; Absorption and fixation harmful metal ions in soil, reduce stress, and slowly hydrolyze in slow-release process, continuously provide beneficial substances, synergistically improve the fertilizer utilization rate of root flower in poor soil, resistance tolerance and sustained growth capacity.

This invention belongs to the field of cosmetic technology, specifically relating to a gentle exfoliating and brightening composition and its application. Specifically, this invention uses a combination of protease aqueous solution, probiotic-fermented brown algae, and panthenol to prepare a composition; then, using this composition as the main active ingredient, it is prepared into a skincare cosmetic. Experimental verification has shown that it can effectively restore the skin's microecological balance, while also brightening the skin. Furthermore, compared to conventional acid-based exfoliating ingredients like salicylic acid, it has a stronger exfoliating effect, a more pronounced exfoliating effect, and is gentler, thus possessing significant practical application value.

The invention belongs to the technical field of food preservation, and provides a gelatin / chitosan film loaded with brown algae extract and a preparation method and application thereof, and the preparation method comprises the following specific steps: (1) mixing brown algae with an ethanol solution, and concentrating to obtain the brown algae extract; (2) mixing a gelatin solution, a chitosan solution, glycerol and the brown algae extract to obtain a film precursor; and (3) carrying out tape casting on the film precursor to obtain the gelatin / chitosan film loaded with the brown algae extract. The brown algae extract is rich in effective active ingredients such as organic acid, so that the film is endowed with good antioxidant and antibacterial properties. By adding the extract, the mechanical property, the water vapor barrier property and the thermal stability of the composite film are effectively improved, and an active packaging material with a uniform structure is formed. In fresh-keeping application, the film effectively delays the quality deterioration process of the instant sea cucumbers in the normal-temperature storage period through the active function of the film, and the texture and sensory quality of the product are remarkably maintained.

The invention relates to the technical field of pesticides, in particular to a pesticide composition based on marine bioactive substances and a preparation method of the pesticide composition. The environment-friendly water-based detergent is prepared from the following raw materials in percentage by weight: 20 to 25 percent of sulfated brown algae polyphenol microcapsules, 8 to 12 percent of sodium alginate, 0.1 to 1 percent of phosphatidylcholine, 2 to 3 percent of alkylphenol polyoxyethylene ether, 1 to 3 percent of fatty alcohol-polyoxyethylene ether, 0.5 to 2 percent of azone, 2 to 5 percent of propylene glycol, 0.2 to 1 percent of organic silicon defoaming agent and the balance of water. According to the pesticide composition prepared by the invention, through slow release and targeted release, the lasting period is prolonged, and the bioavailability is improved. Meanwhile, non-target organism exposure is reduced, and ecological toxicity is reduced.

The invention provides absorbent articles which are formed from or which incorporate a cellulose / alginate-containing material, wherein said material comprises cellulose fibres and a residue of alginate from a brown seaweed, and wherein said material is obtained by a process comprising at least the following steps: (i) providing a brown seaweed, or part thereof; (ii) dividing the brown seaweed, or part thereof, into a plurality of portions; (iii) washing the plurality of portions with water whereby to remove water-soluble components and recovering the residual solids; (iv) extracting alginate from the residual solids and recovering a residual wet residue comprising cellulose fibres and a residue of alginate; and (v) de-watering the residual wet residue whereby to provide said cellulose / alginate-containing material as a dry residue.