1596 results about "Chitin" patented technology

Insertion of a micro-needle into a living body is made easy. The micro-needle includes first and second end sections arranged in a longitudinal direction and is made of a biocompatible and biodegradable material including chitin and/or chitosan.

A functional fibre of regenerated ceratin is prepared through preparing ceratin solution from goat or sheep wool, camel or yak hair, feather, leather leftover, etc, adding one or more of metal oxide, organic metal compound, chitin, chitosan, cyclodextrin, polyether and polyacrylic acid, which have the antistatic, antibacterial, deodorizing, drying, heating lagging and hydroscopc functions, and spinning.

The invention relates to a plant nutrient liquid fertilizer. In order to solve the problem of over fertilization, the plant nutrient liquid fertilizer is prepared from the following raw materials in proportion by weight: aqua brassin 12-36, gibberellin 1-4, indoleacetic acid 30-80, abscisic acid 10-20, naphthaleneacetic acid 50-90, salicylic acid 80-180, vitamin C 1-3, cane sugar 40-100, chitin 20-80, 0.05-0.2 percent triacontanol 400-1,000, hydrolyzed protein 2-5, potassium dihydrogen phosphate 300-400, thiourea 40-120, cobalt chloride 5-12, borax 50-100, sodium silicate 30-55, urea 300-500, ammonium molybdate 50-80, copper sulfate 30-65, zinc sulfate 120-200, magnesium sulfate 100-150, calcium chloride 50-120, manganese sulfate 40-80 and water in the amount of 3-8 times the total amount of all the raw materials or water in the amount capable of dissolving all the raw materials, wherein the water is de-ionized water or micro cluster water; and the preparation method is that all the materials are prepared into aqueous solution. The plant nutrient liquid fertilizer has the advantages of favorably solving the problems of over fertilization and shortage of nutrient elements in soil, obviously improving the plant adverse resistance, improving the photosynthesis and the accumulation efficiency of nutritive materials and improving the yield and the quality.

A genetically modified organism comprising: at least one nucleic acid sequence and/or at least one recombinant nucleic acid isolated from Alicyclobacillus acidocaldarius and encoding a polypeptide involved in at least partially degrading, cleaving, transporting, metabolizing, or removing polysaccharides, cellulose, lignocellulose, hemicellulose, lignin, starch, sugars, sugar oligomers, carbohydrates, complex carbohydrates, chitin, heteroxylans, glycosides, xylan-, glucan-, galactan, or mannan-decorating groups; and at least one nucleic acid sequence and/or at least one recombinant nucleic acid encoding a polypeptide involved in fermenting sugar molecules to a product. Additionally, enzymatic and/or proteinaceous extracts may be isolated from one or more genetically modified organisms. The extracts are utilized to convert biomass into a product. Further provided are methods of converting biomass into products comprising: placing the genetically modified organism and/or enzymatic extracts thereof in fluid contact with polysaccharides, cellulose, lignocellulose, hemicellulose, lignin, starch, sugars, sugar oligomers, carbohydrates, complex carbohydrates, chitin, heteroxylans, glycosides, and/or xylan-, glucan-, galactan, or mannan-decorating groups.

A composite phase-change spinning dope contains soluet and solvent. Said solute is composed of the phase change material chosen from polyol, polyolefin, polyether and paraffin wax hydrocarbon, and the fibre-forming high polymer chosen from cellulose and its delivatives, chitin and its derivatives, polyacrylonitrile, and polyvinyl alcohol. Said solvent is the mixture of DMSO, keton, organic, distilled water or DMF and acetone. It can be used to prepare the superfine phase-change fibres by electrostatic spinning. Said superfine phase-change fibres can be used to prepare multifunctional protecting clothes.

The invention relates to an ecological agricultural drug and a preparing method compounded by a content of Chinese traditional herb plant insecticide and amino group oligosaccharide. The ecological agricultural drug is refined by blending and processing the plant gradients containing one or a plurality of insecticide and disinfecting components and the Chitosante raw materials and solutions which are extracted with the amino group oligosaccharide. The weight percentages of all components are respectively: five to thirty percent of plant materials, seventy to ninety five percent of Chitosante material, and the solvents are alcohol and water. When in blending and configuring process, additives are added; wherein, the additives are one or a plurality of the agents, such as an antiseptic agent, a dispersing agent, a surface active agent, a penetrant or an emulsifying agent. The plant materials are materials such as Sophora flavescens, tobacco, Indian chinaberry fruit, pyrethrum, climbing groundsel or Aztec marigold, etc., the invention has the beneficial effects of multifunction of insecticide and disinfection, anti disease, disease prevention; easy degradation of the product, no residues and extensive raw material source. The working process of the invention simplifies the processes of extraction, condensation and filter with low producing cost.

The invention discloses a biological compatibility surface coater and self-assembling coating method of planted medical apparatus, which is characterized by the following: the coater is prepared by self-assembling coating method layer by layer, which accelerates esoderma and resists thrombus constituted by two or more macromolecular materials with certain positive and negative load; the positive load material is chitose, chitin, polylysine and so on; the negative load material is disebrin, hyaluronic acid, alginic acid, polyamino acid and so on; the crosslinker and biological active factor or drug can be added to accelerate the growth of the cell; the coater satisfies the request of biologically medical transplantation.

A chitin-nano selenium compound for regulating immunity, delaying sanility and preventing cancer and cardiovascular disease is prepared from chitin (chitosan, water-soluble chitosan, or chitoligose) and Se compound through reaction.

The invention relates to non-woven fabrics containing carboxymethyl cellulose fibers and a purpose of the non-woven fabrics containing the carboxymethyl cellulose fibers in a beauty mask substrate. The non-woven fabrics are composed of the carboxymethyl cellulose fibers or composed of the carboxymethyl cellulose fibers and any one kind of calcium alginate fibers, chitin fibers, chitosan fibers and modified chitosan fibers, wherein the content of the carboxymethyl cellulose fibers is 1%-95% of the weight of the non-woven fabrics. The invention further provides non-woven fabrics which are composed of the carboxymethyl cellulose fibers and any two kinds of the calcium alginate fibers, the chitin fibers, the chitosan fibers and the modified chitosan fibers, wherein the content of the carboxymethyl cellulose fibers is 1%-95% of the weight of the non-woven fabrics, and the weight ratio of the any two kinds of fibers is 1:8-8:1. The non-woven fabrics are strong in hygroscopicity, strong in moisture retention, strong in oxygen permeability, and have good biological compatibility, and are convenient to use, and safe and non-toxic.

The invention discloses an application of injectable hydrogel in preparing intraocular filling materials. The application is characterized by being application of the injectable hydrogel as intraocular filling materials in vitreoretinal surgery as well as application of the injectable hydrogel as an intraocular drug carrier, wherein the injectable hydrogel is composed of two agents; the first agent is a glue solution containing oxidized polysaccharide; the second agent is a glue solution containing a chitin derivative and /or collagen; the two agents are separately contained in two injection tubes of a duplicate injector; the two glue solutions are simultaneously pushed and injected by the duplicate injector; in the pushing and injecting process, mixing and cross-linking are generated, namely, a dialdehyde group of the oxidized polysaccharide generates cross-linking reaction with amino of the chitin derivative and/or the collagen to form hydrogel with viscoelasticity. The constituents of the hydrogel are biomacromolecules different from chemical macromolecules, and a micromolecule cross-linking agent is not introduced, so that the biocompatibility is good, the hydrogel can be degraded and absorbed, toxic and side effects are avoided, and the safety is good.

The invention discloses a method for preparing carboxymethyl chitosan. The method comprises the following steps of by using chitin as a material, alkalifying the chitin, carrying out deacetylation reaction by using a cooling-heating alternative method to produce chitosan sodium salt; and then, carrying out carboxylation under an alkaline condition to obtain a carboxymethyl chitosan product. The method disclosed by the invention is simple in process and easy to control, so that a chain scission phenomenon appearing due to long-term high temperature reaction during deacetylation reaction of a chitosan molecular chain is avoided, thereby obtaining carboxymethyl chitosan which is high in viscosity, high in degree of substitution and better in water solubility; moreover, the method is suitable for large-scale industrial production.

The invention belongs to the field of product extraction technology and relates to a method for extracting chitin and antibacterial peptide from fly larvae. The method comprises the following steps of: firstly disinfecting and rinsing fresh fly larvae to be clean, then extruding the cleaned fly larvae to separate the fly larvae skin from visceral mass serous fluid; firstly soaking with hydrochloric acid solution, drying after washing, and then soaking with NaOH solution to remove protein; retaining residual liquid, drying after cleaning, adding the NaOH solution after crushing, carrying out water bath at the temperature of 98 DEG C, and heating for reaction; putting chitosan into acetic acid solution, stopping reaction after the chitosan is dissolved, filtering, cleaning, drying at the temperature of 50 DEG C, and obtaining the chitosan; and then adding acetic acid into the visceral mass serous fluid of the fly larvae, homogenizing, standing over the night at the temperature of 4 DEG C, filtering, adsorbing the filtrate with alginic acid, filtering, then eluting the antibacterial peptide adsorbed on the alginic acid with the hydrochloric acid solution, adjusting the pH value of the eluent to be 3.5, carrying out precipitation with NaCl, carrying out dialysis and desalting, drying and obtaining a crude antibacterial peptide product. The method has the advantages of reasonable technical route, low cost, high yield, large economic value, environmentally-friendly effect and effective utilization of the fly larvae resources for preparing natural product varieties.

The invention discloses a chemical and physical double-cross-linking high-strength chitin gel material and a preparation method thereof. The preparation method comprises the following steps: adding a cross-linking agent for partial chemical cross-linking at the gelatinization temperature lower than that of a chitin solution, subsequently soaking the chitin gel which is subjected to partial chemical cross-linking into a non-solvent for physical cross-linking, and washing with water, thereby obtaining double-cross-linking chitin hydrogel; replacing water in the double-cross-linking chitin hydrogel by an organic liquid, thereby obtaining chitin organic gel, and drying the double-cross-linking chitin hydrogel or the organic gel, thereby obtaining double-cross-linking chitin aerogel; and hot-rolling the double-cross-linking chitin hydrogel or the double-cross-linking chitin aerogel, thereby preparing double-cross-linking chitin biological plastic. The double-cross-linking chitin gel material disclosed by the invention is excellent in mechanical property, low density and high specific surface area, can be easily processed into finished products such as fiber, sheets, granules, films and columns, and is applicable to large-scale popularization and application.

The present invention is directed to a composite laminar material with high mechanical strength and methods of fabricating the material. The invention also provides a method of attaching a medical implant device to tissue.

The invention discloses a high-efficiency multifunctional foliage fertilizer and a production method thereof. The foliage fertilizer is prepared by chelating shrimp processing leftovers, which serve as the main raw material, with medium and minor elements. The foliage fertilizer is prepared from 10-30% of amino acids, 2-8% of medium and minor elements, 10-30% of organic nitrogen, 3-20% of phosphorus, 3-20% of potassium, and 10-30% of shrimp peptide protein, chitosan, chitosan oligosaccharide, chitin, glucosamine hydrochloride, astacin and shrimp cephalin. The foliage fertilizer disclosed by the invention enhances the low-temperature tolerance, drought tolerance, salt damage tolerance, chemical damage tolerance and other stress tolerances of crops on the premise of comprehensively and efficiently supplementing necessary nutrients for crops, and has the functions of restoring the wound in the root system, enhancing the disease resistance of the crops, inhibiting disease and pest and the like. The production technique can reduce the acidolysis consumption, avoids introducing abundant inorganic salts and chloride ions to destroy soil ecological equilibrium and influence plant growth, lowers the energy consumption and requirements for equipment strength, and can implement the clean production of complete utilization and zero pollution discharge.

The invention discloses an active composition containing copper peptide and a cosmetic or skin care product. The active composition containing copper peptide is prepared from the following components in percentage by weight: 0.001-2 percent of copper peptide, 1-5 percent of vitamin E, 0.1-10 percent of chitin oligosaccharide, 0.1-2 percent of 4-MSK, 0.1-5 percent of algal polysaccharides, 6-30 percent of emulsifier, 0-10 percent of co-emulsifier, 0.1-0.8 percent of stabilizer, 0-10 percent of excipient and the balance of water. The active composition and the cosmetic or skin care product have the effects of promoting cell reproduction, remarkably moisturizing and moistening, delaying senescence and the like.

The invention discloses a novel solvent for dissolving chitin by a freezing-unfreezing method or a direct dissolving method, and a use of the solvent composition. The solvent is a KOH aqueous solution, and further comprises any combination of LiOH, NaOH, urea or thiourea. The chitin and the solvent are mixed and then frozen to a point lower than a freezing point, and unfrozen at a point higher than the freezing point to obtain the chitin solution; or, the solvent is pre-cooled to the freezing point of 0 DEG C, and then the chitin is added to the cooled solvent for continuous stirring for more than 3 minutes, so that the chitin is quickly dissolved to form a transparent chitin solution. The chitin solution prepared in the invention can be processed into a chitin finished product of any form, for example, a film type, a plate type, a tubular type, a block type, a granulate type and a fiber type, and further can be processed into various chitin derivatives. The solvent composition is suitable for large-scale popularization and application.

The invention discloses a composite moisturizing agent characterized in comprising, by weight, 30-50% of glycerol, 15-30% of water, 12-15% of sodium lactate, 12-15% of PCA sodium, 3-10% of allantoin, 2-5% of beta-glucan, 0.5-2.5% of polyquaternium-51, and 0-1% of sodium hyaluronate. The composite moisturizing agent composition provided by the invention has a far better effect against skin water loss than those of independent applications of single components in the composition. The composition provided by the invention has a far better effect for skin elasticity than those of independent applications of single samples. Therefore, the components provide a synergetic effect. When the composition is compounded, skin moisture retention can be improved. Also, the composition provided by the invention has a far better effect in improving skin moisture retention than reference samples such as polyethylene glycol, ceramide, collagen, and chitin. Therefore, the composite moisturizing agent provided by the invention is a high-efficiency moisturizing agent.

The invention relates to a buffering harmless plant ash compound fertilizer and a preparation method thereof. The buffering harmless plant ash compound fertilizer is a solid or liquid fertilizer taking plant ash as a main raw material and further comprises the following preparation raw materials by weight: 10-40 parts of humic acid, peat, biochemical fulvic acid or potassium fulvic, 0-20 parts of non-metal nano mineral material, 0-20 parts of chitin or chitosan and 0-10 parts of seaweed extractive, wherein the amount of plant ash is 0.7-2 times the total amount of the raw materials. According to different soil characteristics, plant ash is taken as the main material and is mixed with humic acid, non-metal nano mineral material, chitin, seaweed extractive, amino acid and other substances to prepare the solid or liquid fertilizer, which is used as a base fertilizer or additional fertilizer, has the performance of passivating heavy metals in soil, can reduce the enrichment amount of heavy metals (such as mercury, chromium, lead, arsenic and nickel) in soil, ensures the safety of agricultural products and has the effects of improving soil and promoting growth of plants.

The invention relates to an organic liquid fertilizer containing chitosan. The organic liquid fertilizer comprises the chitosan, humic acid, fulvic acid, phosphorus pentoxide, potassium hydroxide, boric acid, edetic acid, zinc sulphate, manganese sulfate monohydrate, glycine, glutamic acid, serine and lysine. Aqueous extract of traditional Chinese medicines is added into the organic liquid fertilizer. As various marine bioactive ingredients such as the chitosan are added into the organic liquid fertilizer, the organic liquid fertilizer can be used for culturing a great quantity of effective microbial communities of actinomycetes and the like within short time after being applied to soil. Antibiotics and other substances secreted from the effective microbial communities can inhibit harmful microbial communities of pythium aphanidermatum, rhizoctonia and the like, and thus a microbial environment of the soil can be improved rapidly. The chitosan also can be used for accelerating the growth of root systems and the combination of the root systems and the soil. In addition, as the aqueous extract with insecticidal efficacy of the traditional Chinese medicines is added into the organic liquid fertilizer, plant diseases and insect pests of leaf surfaces can be effectively reduced when the fertilizer is applied to the leaf surfaces.

The invention discloses a self-healing liquid crystalline elastomer based on a chitin-type liquid crystal and a preparation method of the self-healing liquid crystalline elastomer. According to the self-healing liquid crystalline elastomer disclosed by the invention, the chitin-type liquid crystalline elastomer with the self-healing capability is constructed by introducing a reversible covalent-multiple hydrogen bond; due to self-healing introduction, cracks in the material can be remarkably reduced, the comprehensive performances and the reusability of the material are improved, and the service life of the material is prolonged. The preparation method comprises the following steps: firstly, selecting proper reaction materials and reaction paths, synthesizing a monomer containing the multiple hydrogen bond and a side group, with a large volume, containing a mesogenic unit, carrying out reaction on the monomer and the side group by virtue of a liquid crystalline monomer with connection of a short spacer and a double bond under the proper reaction conditions to design and synthesize a chitin-type effect polymer, regulating the dosage of a hydrogen bond crosslinking agent, and preparing the chitin-type self-healing liquid crystalline elastomers in different crosslinking degrees under the condition without influencing the liquid crystallinity.

The invention relates to a high-calcium compound shrimp cake and a producing method thereof. The high-calcium compound shrimp cake is prepared through carrying out low-temperature chopping and uniform stirring on an all-acete chinensis paste which is prepared through a high-precision waterproof pulverization technology and proportional minced fillet, chicken breast fillet, salt, vital gluten, diced fatty meat, potato starch, monosodium glutamate, disodium 5'-ribonucleotide, sugar, a water retention agent and a quality improver so as to obtain a cake core material, preparing the cake core material into a circular or elliptic shape through a forming machine, wrapping a layer of bread powder on the outside surface of the cake core, and after the shape of the obtained shrimp cake is finalized by quick-freezing, deep-frying the shrimp cake until the appearance of the shrimp cake is golden, so that the shrimp cake is obtained. The shrimp cake prepared by the producing method is golden in appearance, and fresh, tender and slightly crisp in taste, both has the delicate flavors of shrimps, and preserves various beneficial elements such as rich Ca, P, chitin and astaxanthin in shrimp shells, so that the shrimp cake accords with the demands of people on food nutrition, health, taste, and the like.

A remodelable encasement structure comprising a pouch formed from at least one sheet of bioremodelable material, the pouch having an internal region configured to receive a device therein, the bioremodelable material comprising an extracellular matrix (ECM) composition that includes an ECM scaffold component derived from a mammalian source and at least a bioactive component selected from the group consisting of a statin and a chitin derivative

The invention discloses a peanut seed coating agent which comprises the following components in percentage by weight: film-forming substances, trace elements, plant growth regulators, bactericides, insecticides and water, wherein the film-forming substances are 1.5%-3% of chitosan, the trace elements are 0.1%-0.15% of ammonium molybdate, 0.1%-0.15% of boric acid, 0.2%-0.3% of ferrous sulfate, 0.05%-0.1% of zinc sulfate and 0.05%-0.1% of copper sulfate, the plant growth regulators are 0.000075%-0.00015% of growth hormones or 0.01%-0.015% of gibberellin, the celest is 4%, and the imidacloprid is 2.5%. The peanut seed coating agent disclosed by the invention is reasonable in proportion and high in performance price ratio, not only contains the insecticides and the bactericides which have high internal absorbability, but also contains the trace element and the plant growth regulators which are needed by seed germination, plays roles in sterilization, disease prevention, seed vitality enhancement and seed germination acceleration by being slowly released after seeds are sowed, can be used for greatly enhancing the germination rate and is obvious in output and yield increase effect.

The invention relates to a paint-free decorative overlay fitment board, in particular to a formaldehyde-buster antibacterial ecological board and a manufacturing method thereof, and belongs to wood processing industry. The formaldehyde-buster antibacterial ecological board comprises a base material layer, and an upper surface layer decorative film adhesive paper layer and a lower surface layer decorative film adhesive paper layer which adhere on the upper surface and the lower surface of the base material layer in a pressed mode respectively. The upper and/or lower surface layer decorative film adhesive paper layer are/or decorative paper dipped with an amino resin adhesive solution and a formaldehyde decomposition adhesive solution. The decorative paper dipped with the amino resin adhesive solution and the formaldehyde decomposition adhesive solution is 0.08-0.12 mm thick, and the base material layer is 2.5-25 mm thick. The formaldehyde decomposition adhesive solution comprises formaldehyde decomposition effective constituents, amino resin and nano-silver. The mass of the formaldehyde decomposition effective constituents accounts for 5-10% that of the formaldehyde decomposition adhesive solution. The formaldehyde decomposition effective constituents comprise chitin and nano silicon wafers. The amino resin is melamino-formaldehyde resin or melamine modified urea resin. The concentration of the nano-silver is 50-150 ppm. The formaldehyde-buster antibacterial ecological board is vivid in decoration effect, low in cost and good in formaldehyde-buster antibacterial ecological board purifying effect.

The present invention discloses a solid drink having weight losing and body slimming functions. The solid drink is prepared from the following raw materials according to a certain proportion: soybean protein isolate, whey protein, L-carnitine, tartrate, chitin, conjugated linoleic acid glyceride micro-capsule powder, a cassia seed extract, skim milk powder, collagen powder, soybean lecithin, a lotus leaf extract, a white kidney bean extract, polydextrose, isomaltooligosaccharide, enzyme powder, konjac flour, sodium carboxymethyl cellulose and excipients of essence pigments and maltodextrin. The solid drink takes into account the comprehensive needs of people taking the solid drink in nutritional supplement, metabolic regulation, satiated meal, taste in taking, etc., avoids the common problems of the existing weight losing products to the human body, contains the necessary functional components for the weight losing, also considers the accessory functions of regulating gastrointestinal functional regulations, blood lipids and cardiovascular and cerebrovascular health, improving skin, etc., fully blends and supplements the various functional components, plays the weight losing and body slimming effect, and also has a certain health-care role.

The invention discloses a novel health-care environment-friendly textile fabric. The novel health-care environment-friendly textile fabric comprises the following components, by mass, 25%-30% of regenerated cellulose fibers, 15%-20% of seaweed carbon fibers, 20%-25% of polylactic acid fibers, 10%-15% of chitin fibers and 25%-30% polyester fibers, and is formed by warp and weft being interwoven, wherein the warp is made of the regenerated cellulose fibers and the seaweed carbon fibers in a blending mode and the weft is made of the polylactic acid fibers, the chitin fibers and the polyester fibers in a blending mode. Through the method, the novel health-care environment-friendly textile fabric has ultraviolet ray and infrared ray radiation resistance performance, at the same time, has superior health-care nursing functions and biodegradable performance, and is free of toxic, harmless, capable of protecting the environment and safe.

The invention discloses a preparation method of electronegative chitin nanofiber hydrogel. The preparation method comprises the steps that 1, a chitin raw material is taken to be pretreated, and chitin slurry is obtained; 2, the chitin slurry obtained in the step 1 is treated through a 2,2,6,6-tetramethyl piperidine-nitrogen-oxide catalyst oxidization system to obtain TEMPO-oxidized electronegative chitin; 3, the electronegative chitin obtained in the step 2 is mechanically treated in a weakly-alkaline aqueous solution or water to prepare an electronegative chitin nanofiber dispersing solution; 4, the electronegative chitin nanofiber dispersing solution obtained in the step 3 is treated through an acidic coagulation bath or an acidic steam bath to prepare the physically-crosslinked electronegative chitin nanofiber hydrogel. According to the preparation method of the electronegative chitin nanofiber hydrogel and aerogel, the method is simple and high in operability, and hydrogel preparation can be achieved at low cost; chitin nanofiber hydrogel and aerogel materials prepared through the method have the advantages of being good in form, low in concentration and high in strength.

The invention relates to the field of food exterior package, in particular to food wrapping paper and a production method thereof. The production method comprises the steps of preparing softwood pulp, hardwood pulp and bamboo pulp according to a certain proportion, respectively pulping the softwood pulp, the hardwood pulp and the bamboo pulp and then mixing; adding a fluorine type oil-resistant agent and a novel chitin bactericide into the mixed pulp according to a certain proportion; adding a mineral oil type stripping gloss enhancer in a spraying way; manufacturing paper with the pulp by using a paper-making machine, and then using a controllable medium-high calecder roll to calendar the paper to produce the high gloss antibacterial food wrapping paper. Therefore, after the production method is adopted, the glossiness, oil resistance and antibacterial property of the food wrapping paper are greatly improved.

The invention relates to the method of the preparation of polysaccharide fibers based on hyaluronic acid, a compound comprising hyaluronic acid and metal ions, schizophylan, chitin/chitosan-glucan complex, a compound comprising chitin/chitosan-glucan complex and metal ions, internal mixture of chitin and chitosan, a compound comprising internal mixture of chitin and metal ions, sodium alginate, potassium alginate, ammonium alginate, xanthane, xanthane sodium salt, xanthane potassium salt, oxycellulose, oxycellulose sodium salt, oxycellulose potassium salt, carboxymethyl cellulose, carboxymethyl cellulose sodium salt, and carboxymethyl cellulose potassium salt, or a mixture of polysaccharides, in a non-stationary coagulation bath. Further the invention relates to covers of internal and external wounds and skin defects based on these fibers, and a method of production thereof, and the apparatus for the preparation of polysaccharide fibers.