995 results about "Chitin" patented technology

A ternary deep eutectic solvent (TDES) system for a biomolecule (for example, chitin) recovery from a biomass (for example, seafood waste), and the method of preparation of ternary deep eutectic solvent (TDES) system, and a process to differentiate / extract / recover biomolecules (such as chitin) from a biomass (such as seafood waste).

The invention relates to the field of gene engineering, and particularly discloses a barnacle chitin antibacterial peptide, an engineering algal strain of the barnacle chitin antibacterial peptide and a preparation method and application of the engineering algal strain. Wherein the amino acid sequence of the barnacle chitin antibacterial peptide is as shown in SEQ ID NO. 1; or an amino acid sequence which is obtained by substitution and / or deletion and / or addition of one or more amino acids of SEQ ID NO.1 and has the same function as SEQ ID NO.1; or an amino acid sequence which has 70%, 80%, 85%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98% or 99% homology with the SEQ ID NO.1 and has the same function as the SEQ ID NO.1. The brand-new barnacle chitin antibacterial peptide obtained in the application has a good antibacterial effect, bacteria can be killed through a cell protection barrier, and the cell hemolysis rate at the minimum inhibition concentration is 7.2%.

The invention discloses an N-acetylglucosamine transferase AcetRS-R346D and an application thereof, and belongs to the technical field of functional enzymes. And the amino acid sequence of the N-acetylglucosamine transferase AcetRS-R346D is as shown in SEQ ID NO. 3. The invention further discloses the application of the N-acetylglucosamine transferase AcetRS-R346D in the preparation of the chitosan oligosaccharide. The N-acetylglucosamine transferase AcetRS-R346D disclosed by the invention is obtained by carrying out mutation modification on the N-acetylglucosamine transferase AcetRS, and can be used for producing the chitosan oligosaccharide with the polymerization degree of 4 to 7, especially (GlcNAc) 7. The product spectrum of the N-acetylglucosamine transferase is widened, and the N-acetylglucosamine transferase can be used for preparing high-polymerization-degree chitosan oligosaccharide and has a wide application prospect.

The invention belongs to the field of natural product extraction, and particularly relates to a method for extracting chitosan by using hermetia illucens in a high-valued manner. According to the method, the ionic liquid is introduced while the chitosan is extracted by adopting a deep eutectic solvent method, the deep eutectic solvent can form strong interaction with chitin molecules, the ionic liquid can further enhance specific recognition of the chitin molecules, and the ionic liquid and the deep eutectic solvent have a synergistic effect, so that solubility and recognizability of the chitin are improved; protein and salt are efficiently removed, meanwhile, glucosidic bonds of a chitin macromolecular main chain are prevented from being hydrolyzed and broken, and the extraction rate and purity of chitosan are remarkably improved. According to the method, the extraction condition is mild, the eutectic solvent can be recycled and reused, the extraction process flow of the chitosan is simplified, and the method is environment-friendly.

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 discloses a microbial compound high-efficiency organic bacterial fertilizer which comprises the following raw materials: 10-20 parts of a microbial agent, 10-20 parts of humic acid, 3-10 parts of natural mineral powder, 1-7 parts of a plant extract, 2-4 parts of amino acid, 2-5 parts of a seaweed extract, 1-3 parts of chitosan, 3-7 parts of charcoal, 1-3 parts of chitin, 2-5 parts of potassium fulvate and 1-3 parts of lignosulfonate. The problems that existing organic bacterial manure is single in function, not remarkable in effect, high in preparation cost and the like are solved. The organic bacterial fertilizer has multiple functions of improving soil fertility, promoting crop growth, enhancing crop stress resistance and the like, and the preparation method is simple, easy to implement, low in cost and suitable for large-scale production.

The invention relates to the technical field of lithium sulfide preparation, and particularly discloses a preparation method of lithium sulfide. The preparation method of the lithium sulfide comprises the following steps: grinding and mixing lithium sulfate, chitin and derivatives thereof, then putting the mixed material into a corundum crucible, putting the corundum crucible into a tubular furnace, heating to 250 DEG C at a heating rate of 7 DEG C / min in a nitrogen atmosphere, keeping the temperature for 1 hour, and cooling to room temperature to obtain the lithium sulfide. Then heating to 300 DEG C at a heating rate of 1 DEG C / min in a nitrogen atmosphere, keeping the temperature for 5 hours, carrying out a carbonization coating reaction, then heating to 700 DEG C at a heating rate of 5 DEG C / min in a nitrogen atmosphere, keeping the temperature for 10 hours, carrying out an oxidation-reduction reaction, and finally grinding to obtain lithium sulfide. The preparation method of the lithium sulfide powder provided by the invention is simple in process flow, the requirement on environment control is reduced, and the preparation method is low in raw material price, relatively few in working procedures, low in preparation cost and suitable for large-scale industrial production.

The invention relates to the technical field of lithium ion battery fire extinguishing agents, in particular to a lithium ion battery fire extinguishing agent and a preparation process. The preparation process comprises the following steps: S1, biomass pretreatment: mixing 40-50 parts of chitin powder with a 2wt% sodium hydroxide solution according to a mass volume ratio of 1: 10, stirring at 60 DEG C for 1-2 hours, and centrifuging and freeze-drying to obtain a chitin crude product; dispersing the chitin crude product in deionized water, and carrying out ultrasonic treatment to obtain a cellulose suspension with the solid content of 1%; s2, cellulose modification: adding 15-20 parts of povidone into the cellulose suspension, and mixing and stirring at 60 DEG C for 1 hour to obtain a modified cellulose suspension; s3, introducing nano silicon dioxide; s4, preparing modified gel; and S5, cross-linking and drying.

The invention discloses a method for extracting chitin from shiitake mushroom residues by using an ultrasonic-assisted deep-eutectic solvent, which belongs to the technical field of polysaccharide extraction and comprises the following steps: preparing dried shiitake mushroom powder, preparing the deep-eutectic solvent and extracting the chitin. According to the method for extracting the chitin from the mushroom residues through the ultrasonic-assisted deep-eutectic solvent, the natural deep-eutectic solvent serves as the solvent, ultrasonic synergistic extraction is adopted, the chitin extraction rate and the product purity are greatly improved, the extraction efficiency is high, the method is easy to operate, the process is easy to control, and the method is environmentally friendly, low in production cost and suitable for industrial production. A new thought is provided for further utilization of mushroom processing waste resources.

The invention belongs to the technical field of biomedical materials, and particularly relates to a multi-layer multifunctional hydrogel microsphere for diabetic wounds as well as a preparation method and application of the multi-layer multifunctional hydrogel microsphere. The preparation method comprises the following steps: firstly, synthesizing a chitosan derivative with proper amino and aldehyde group contents, oxidized macromolecules and modified chitin; then preparing photocuring hydrogel microspheres by utilizing a microfluidic technology, and sequentially immersing the photocuring hydrogel microspheres into an oxidized polymer solution, a modified chitin solution, a tannic acid solution and a metal salt solution, so as to construct the hydrogel microspheres with a multifunctional layer structure. The invention further provides specific application intervals of parameters such as solvents used by various solutions, concentration ranges and soaking time. The preparation method provided by the invention has expansibility and universality, various types of microspheres can be constructed for sequential release of bioactive substances, and the requirements of tissue repair are met.

The invention relates to chitin-based acrylic resin and a preparation method thereof, and belongs to the technical field of intersection of high value-added utilization of biomass resources and acrylic resin. The chitin-based acrylic resin is prepared from the following components in parts by weight: 30 to 50 parts of acrylic modified chitin, 20 to 30 parts of acrylic monomer, 10 to 20 parts of polyaldehyde monomer, 5 to 10 parts of polybasic organic amine, 1 to 5 parts of emulsifier, 0.1 to 0.5 part of initiator, 0.2 to 0.4 part of defoaming agent and 80 to 120 parts of deionized water. According to the method, forestry and agricultural residues are used as raw materials, chitin with small molecular chains is obtained through deacetylation treatment, meanwhile, a large number of primary amino groups with high chemical reactivity are exposed on the surfaces of the molecular chains of the chitin, and 3-formyl-2-butenoic acid is further utilized to react with the chitin, so that the yield of the chitin is increased. Acrylic acid groups are successfully grafted to chitin molecular chains to be subjected to polymerization reaction with acrylic acid monomers to form macromolecule resin, meanwhile, the macromolecule resin is subjected to cross reaction with polyaldehyde and polybasic organic amine to generate net-shaped crosslinking, and the strength of the acrylic resin after film forming is improved.

The present invention relates to a pharmaceutical composition with joint repair efficacy, which is composed of collagen, chitosan and a pharmaceutically acceptable carrier, wherein the weight ratio of collagen to chitosan in the composition is 11:1-1:11, the average molecular weight of collagen is 3kDa-500kDa, and the weight average molecular weight of chitosan is 10000-200000. The pharmaceutical composition of the present invention is used to treat and relieve pain caused by joint cavity stenosis and bone wear, effectively prevent and treat traumatic or degenerative osteoarthritis, and has the advantages of good water solubility, good biocompatibility, fast onset, good repair effect, good stability, good re-dissolution stability, long effective period, easy storage, etc.

The invention belongs to the technical field of green processing of biomass materials, and particularly relates to a green preparation process of high-deacetylation-degree chitin. The preparation method aims at the problem of high energy consumption of existing high-deacetylation-degree chitin preparation. According to the method, raw materials are pretreated by utilizing a compound enzyme system under a low-temperature condition, chitin crystal lattices are preliminarily dissociated by combining a deep eutectic solvent at a medium temperature, high deacetylation conversion is realized through short-time dissolution of an ionic liquid, and meanwhile, a membrane separation-electrodialysis-gradient freezing crystallization three-stage recycling technology is matched, so that recycling of the solvent is realized; the method greatly reduces the reaction temperature and energy consumption, avoids the use of corrosive reagents, and has the advantages of environmental protection, low energy consumption, high deacetylation degree of the product, excellent quality and the like.

The invention provides a toughened polylactic acid blend as well as a preparation method and application thereof, and belongs to the technical field of new materials. According to the invention, poly (p-dioxanone), chitin, polymethyl acrylate, glycerol, polycaprolactone, epoxypropane and polymethyl methacrylate in a specific ratio are adopted as a modified composite material, and the modified composite material and polylactic acid are subjected to melt blending under specific conditions to realize toughening modification of a polylactic acid material. Experiments prove that the toughening type polylactic acid blending material prepared by the method can effectively improve the toughness of polylactic acid, can also improve the degradation speed of polylactic acid, and has a wide application prospect.

The invention belongs to the technical field of extraction and separation, and relates to a method for separating protein, grease and chitin of hermetia illucens larvae and application. The invention provides a method for separating protein, grease and chitin from hermetia illucens larvae, which comprises the following steps: mixing monobasic organic acid, binary organic acid, ternary organic acid and an alcohol compound, and heating in a water bath to obtain an ionic solution; the hermetia illucens larvae are smashed, dried and then placed in the ionic solution, the mixture is divided into three layers after being heated in a water bath, the upper-layer substance is grease, the middle-layer substance is the ionic solution containing protein, and the lower-layer substance is chitin and inorganic salt; the upper-layer substance, the middle-layer substance and the lower-layer substance are separated, the upper-layer substance is grease, the middle-layer substance is taken and separated to obtain protein, and the lower-layer substance is taken and inorganic salt is removed to obtain chitin. According to the separation method provided by the invention, the use of toxic chemical solvents is avoided, so that the hermetia illucens larvae are fully recycled.

The invention discloses a preparation method and application of crab shell chitin without chemical decolorization, and the preparation method comprises the following steps: crushing the crab shell of Eriocheir sinensis to obtain crab shell powder; dissolving crab shell powder in distilled water according to a ratio of 1: 10-1: 30 (w / v) to obtain a crab shell powder solution; treating the crab shell powder solution by using plasma jet (PJ), washing to be neutral, and drying to obtain plasma pretreated crab shell powder; dissolving the crab shell powder pretreated by the plasma into 0.1-3M hydrochloric acid (HCl) solution according to the ratio of (1: 10)-(1: 30) (w / v), and carrying out demineralization treatment; washing the demineralized solid matter to be neutral, performing deproteinization treatment by using 0.1-3M sodium hydroxide (NaOH) solution, washing to be neutral, and drying to obtain white solid crab shell chitin. In the extraction process of the crab shell chitin, a strong oxidant (such as H2O2) is not required to be used for decoloring, the color is close to that of commercial chitin, and the process is simple, green and environment-friendly; meanwhile, the production cost is reduced.

The invention relates to a charcoal-based compound fertilizer for improving soil acidification and a preparation method thereof, and belongs to the technical field of agriculture. Magnesium element, plant source biomass and animal source biomass are jointly pyrolyzed to prepare magnesium-containing biochar, chitin is introduced, and modified biochar rich in multiple nutrient elements is prepared. The biochar not only has the fertilizer efficiency of traditional organic fertilizers, but also can remarkably increase the pH value of soil, and meanwhile, the soil structure improvement capability and the water and fertilizer retention capability of the biochar are enhanced. Besides, the modified biochar is compounded with humic acid, amino acid, sodium carboxymethyl cellulose, attapulgite, corn starch and the like to prepare the biochar-based compound fertilizer, and the fertilizer can significantly improve soil acidification, improve soil fertility, promote plant growth and development and improve crop yield and quality; and the fertilizer also has the advantages of long-acting slow release and enhancement of plant stress resistance.

The invention relates to the field of water treatment, in particular to a composite material with polyfunctional groups and a preparation method and application thereof.The composite material with the polyfunctional groups contains at least two groups including carboxyl, amino, amido and hydroxyl and at least one group including sulfo and nitro; the composite material contains a cross-linked compound of a polymer I and a polymer II, and the polymer I is a carbon chain polymer and contains at least one group including a sulfonic acid group and a nitro group; and the polymer II is at least one of chitosan and a derivative thereof, and chitin and a derivative thereof. The composite material with multiple functional groups is preferably a composite fiber, has a synergistic adsorption effect of multiple functional groups, can effectively adsorb a complex heavy metal ion system in a water body, and is a heavy metal ion adsorbent which is high in adsorption efficiency, large in adsorption quantity and wide in applicable temperature range.

The invention discloses bio-based polyester and a preparation method thereof, and belongs to the technical field of biomass resource utilization and bio-based polyester, and the bio-based polyester comprises the following components: deacetylated chitosan, aldehyde modified lignin, polybasic organic amine, polybasic aldehyde monomer, a catalyst, 1, 4-dioxane, methanol and deionized water. The method comprises the following steps: extracting chitosan from shrimp / crab shells, and exposing primary amino groups through alkali treatment; the method comprises the following steps: extracting lignin from coffee grounds, and grafting an aldehyde group with a polyaldehyde monomer; the aldehyde modified lignin and chitosan are subjected to Michael addition reaction and then are crosslinked with polyaldehyde monomers and polybasic organic amine to form a net structure, so that the film forming strength is improved. The environment burden caused by the coffee grounds and shrimp shells or crab shells is reduced, and meanwhile, a low-cost and environment-friendly bio-based polyester is provided for the field of coatings.

The multifunctional environment-friendly and energy-saving flowerpot comprises a pot body and a tray, a boss is arranged on a bottom layer plate of an inner cavity of the pot body, and a drainage hole is formed in the middle of the boss. One end of the honeycomb ceramic tube is communicated with the inner cavity of the pot body, the other end of the honeycomb ceramic tube penetrates through the drain hole and is flush with the lower surface of the bottom plate of the pot body or is sleeved on the boss, the thickness of the wall of the honeycomb ceramic tube is 30-40% of the diameter, the porosity of the honeycomb ceramic tube is 40-70%, and the honeycomb ceramic tube contains pelelith and chitin. According to the utility model, frequent watering is not needed, soil can always keep moist humidity for growth of the plant bonsai for a long time, water is not accumulated, and hot air generated by water evaporation can be timely discharged when the bonsai is heated at high temperature, so that the bonsai cannot be dried up and burnt when the room temperature rises; therefore, the potted landscape can grow normally for a long time, the pot body is bactericidal and antibacterial, water molecules are refined to be conveniently absorbed by a root system, and the functions of constant temperature, heat preservation, ventilation and the like are achieved.

The invention provides a concrete water reducing agent and a preparation method thereof, and belongs to the technical field of water reducing agents. Adding the modified chitin, 1-vinyl-3-butylimidazolium trifluoromethanesulfonate, a silane coupling agent with double bonds, methacrylic acid, trans-butenedioic acid and an initiator into dimethylformamide, heating and stirring for reaction, removing methylbenzene under reduced pressure, and performing alkali washing and alcohol washing to obtain the concrete water reducing agent. The modified chitin is prepared by modifying chitin modified by sodium sulfonate and acrylic acid with tannic acid. Modified chitin, 1-vinyl-3-butylimidazolium trifluoromethanesulfonate, a silane coupling agent with double bonds, methacrylic acid and trans-butenedioic acid are copolymerized to prepare the polycarboxylate superplasticizer, molecules of the polycarboxylate superplasticizer are of a comb-shaped structure, a main chain of the polycarboxylate superplasticizer is provided with a plurality of active groups with high polarity, and a side chain of the polycarboxylate superplasticizer is provided with hydrophilic active groups. The water-reducing agent has the characteristics of low doping amount, high water-reducing rate, high reinforcing effect, high plasticity retaining property and volume stability, and has wide application prospects.

The present invention provides a novel resource-recycling technology for converting crustacean waste into violacein. Specifically, an engineered strain of Viola viride that efficiently metabolizes chitin and synthesizes violacein is disclosed. The engineered strain can be used for crustacean waste treatment and chitin resource conversion.

The invention discloses a preparation method of a PVA / chitin porous nanosheet layered film for salinity gradient power generation, and belongs to the technical field of bio-based material functionalization. The preparation method comprises the following operation steps: firstly, preparing a chitin porous nanosheet by utilizing an acid steam combined ultrasonic strategy; modifying the surface of the chitin porous nanosheet with rich positive charges through quaternization reaction, and performing suction filtration and drying to obtain a porous nanosheet layered film; and finally, circularly freezing, thawing and packaging the porous nanosheet layered film by using polyvinyl alcohol hydrogel to prepare the PVA / chitin porous nanosheet layered film. According to the PVA / chitin porous nanosheet layered film, by means of combination of chitin nanosheet layer gap channels and micro-nano pore channels in nanosheet surfaces, ion transmission paths are increased, ion transmission resistance is reduced, the microstructure of the layered film is effectively stabilized jointly by means of the interlayer weak force effect and the hydrogen bond bonding effect between polyvinyl alcohol molecules, and therefore the film has the advantages of being capable of being used for preparing the composite film. And the optimal salinity gradient power generation output power density reaches 7.33 W / m < 2 >.

The invention discloses a magnetic immobilized enzyme and a preparation method and application thereof in preparation of chitosan oligosaccharide, the immobilized enzyme comprises a carrier and an enzyme loaded on the carrier, the carrier is a magnetic nanoparticle modified double-hole silicon dioxide nanoparticle, the double-hole silicon dioxide nanoparticle simultaneously contains a plurality of macropores and a plurality of micropores, and the macropores and the micropores are uniformly distributed on the carrier. The aperture of the large hole is 20-40nm, the aperture of the small hole is 2-5nm, and the magnetic immobilized enzyme has strong magnetism, is more rapid and convenient to recover, has good reusability, is simple and convenient to operate, has a wide application prospect, and is suitable for industrial preparation of chitosan oligosaccharide.

The invention discloses polysaccharide fluid hydrogel for digestive tract submucous injection and a preparation method of the polysaccharide fluid hydrogel, and belongs to the field of medical biological materials. According to the invention, carboxylated chitin or a carboxylated chitosan derivative with a mass percentage of 0.1-6%, or hydroxyalkylated chitin or a hydroxyalkylated chitosan derivative and collagen or gelatin are subjected to micro-crosslinking to form a low-crosslinking-degree supramolecular derivative as a solute; the polysaccharide fluid hydrogel is formed by taking water, normal saline, a physiological equilibrium solution, a phosphate buffer solution or a Green's solution as a solvent. By controlling the molar ratio of the raw materials to the cross-linking agent and performing micro-crosslinking with a small amount of the cross-linking agent, the prepared low-crosslinking-degree supramolecular derivative can form hydrogel in an aqueous solvent, has shear thinning and self-repairing characteristics, has certain viscosity, is easy to push and inject, and can be applied to the field of water treatment. The lifting height of the mucous membrane can be effectively kept, the height keeping time can be effectively prolonged, the mucous membrane is not prone to overflowing under the condition that the mucous membrane is damaged, an endoscope injection device is not blocked, and the material is an ideal material for forming a safe liquid pad through digestive tract submucous injection.

The invention provides mangrove chitin bacillus FCG-7 and application of the mangrove chitin bacillus FCG-7 in preparation of N-acetylglucosamine, and belongs to the technical field of microorganisms, the mangrove chitin bacillus FCG-7 provided by the invention is preserved in Guangdong Microbial Culture Collection Center, and the preservation number is GDMCC No: 63488. The strain provided by the invention has good low-temperature resistance and extracellular chitinase production capability, and can efficiently degrade chitin under a low-temperature condition to produce N-acetylglucosamine with an excellent biological effect; and the strain is still stable after passage, and is expected to be applied to the production of high-added-value N-acetylglucosamine by using chitin biomass as a raw material under a low-temperature condition.

The invention relates to the field of comprehensive utilization of biomass resources and preparation of high polymer materials, in particular to a green preparation method of high-deacetylation-degree chitin capable of recycling reaction waste liquid. The invention aims to solve the problems of serious environmental pollution, resource waste, low product purity and incomplete waste liquid recycling in chitin extraction. The method comprises the following steps: by taking crustacean biomass as a raw material, firstly carrying out high-voltage pulse electric field pretreatment to crush the tissue structure of the raw material and improve the reaction activity, and then heating and extracting in a choline chloride-lactic acid deep eutectic solvent system to realize efficient removal of proteins and inorganic salts in the raw material; according to the method, the chitin and the alkali liquor are subjected to a rapid deacetylation reaction by adopting microwave assistance and cooperating with the action of the phase transfer catalyst; according to the method, a waste liquid graded recycling system is adopted, hydrochloric acid in waste acid liquid generated by decalcification is recycled through electrodialysis, alkali liquid is recycled through ultrafiltration-nanofiltration double-membrane combination, deep eutectic solvent components are recycled through reduced pressure distillation, and recycling of acid, alkali and a solvent is achieved.

The invention relates to an application of carboxylated chitin or carboxylated chitosan in promoting insect-killing fungi to prevent and treat diseases and insect pests. Research finds that carboxylated chitin or carboxylated chitosan can significantly promote spore germination and hypha growth of insecticidal fungi, also can significantly enhance stress resistance of the insecticidal fungi, significantly enhance toxicity of the insecticidal fungi to pests, improve ultraviolet resistance and high temperature resistance of the insecticidal fungi, and improve the insecticidal activity of the insecticidal fungi. The invention also finds that the carboxylated chitin or chitosan can effectively inhibit the growth of Xanthomonas oryzae pv. Oryzae. Therefore, the carboxylated chitin or the carboxylated chitosan can be used for preparing a product for enhancing the insecticidal fungus effect and a product for preventing and treating the rice bacterial leaf blight, and the prevention and treatment of plant diseases and insect pests are realized. In addition, carboxylated chitin and carboxylated chitosan are derived from natural polymer materials, have the characteristics of safety, no toxicity, biodegradability, environmental friendliness and the like, are environment-friendly and economical, and have wide application prospects and market values.

The invention provides a cordyceps militaris mycelium and a preparation method and application thereof, and relates to the technical field of biological materials. According to the invention, chitinase is added into the cordyceps militaris mycelium material to carry out enzymolysis on chitin to obtain chitooligosaccharide and N-acetylglucosamine, so that beta-glucan in a mycelium framework is dissolved out, and the grafting efficiency of the cordyceps militaris mycelium material is improved; furthermore, the antibacterial effect of the antibacterial material is improved by carrying out grafting reaction on the cordyceps militaris mycelium material and an exogenous monomer antibacterial peptide which has antibacterial performance and contains carboxyl groups.

The invention belongs to the technical field of microorganisms, and particularly discloses a strain of Paenibacillus amyloliquefaciens (Paenibacillus amyloliquefaciens) capable of increasing the yield of tea leaves and improving the quality of the tea leaves and an application of the Paenibacillus amyloliquefaciens (Paenibacillus amyloliquefaciens) capable of increasing the yield of the tea leaves and improving the quality of the tea leaves. The preservation number of the chitin-dissolving paenibacillus is CCTCC NO: M 20241893, and the strain has efficient potassium-dissolving activity, strong organophosphorus-dissolving activity and IAA (Indoleacetic Acid) production capacity, and can degrade chitin by secreting chitinase, so that the strain has certain inhibition capacity on fungal pathogenic bacteria, and can be applied to the field of agricultural production. The bacterial strain can increase the content of rapidly available phosphorus and rapidly available potassium in tea garden soil, increase the total potassium content of tea leaves, increase the density of tea buds and the yield of the tea leaves, increase the content of free amino acids in the tea leaves and reduce the content of tea polyphenols and the phenol-ammonia ratio of the tea leaves, so that the quality of the tea leaves is improved.