87results about How to "Antibacterial" patented technology

The invention relates to bacillus, a biocontrol inoculant prepared from the bacillus and application of the biocontrol inoculant, and belongs to the technical field of biological inoculants. The bacillus provided by the invention is bacillus subtilis and is named as QY2, the preservation unit is China General Microbiological Culture Collection Center, the preservation address is Institute of Microbiology, Chinese Academy of Sciences, No.3, No.1 Yard, Beichen West Road, Chaoyang District, Beijing, the number of the preservation center is CGMCC No.31373, and the preservation time is July 19, 2024. The bacillus QY2 disclosed by the invention has a certain bacteriostatic effect on different pathogenic bacteria regardless of living bacteria, supernate or cell lysis solution. The bacillus QY2 is high in living ability and wide in application range of nutrient sources, temperature, humidity and pH value. The compound has no pathogenicity to fruits and vegetables, has good tolerance to broad-spectrum bactericides, and has a great application prospect.

The invention discloses a preparation method of a multifunctional polyvinyl composite film and application of the multifunctional polyvinyl composite film in food preservation. The preparation method comprises the following steps: firstly, preparing Ag-coated MOF through a hydrothermal method, then uniformly dispersing the Ag-coated MOF and tannic acid into a carboxymethyl chitosan solution, and carrying out crosslinking modification on the Ag-coated MOF; and coating the prepared CMCS / TA / Ag (at) MOF mixed solution on a polyethylene film treated by oxygen plasma, and drying to form a film, so as to obtain the multifunctional polyethylene-based composite film. The CMCS and the TA are adopted to perform crosslinking modification on the Ag-coated MOF, so that the stability of the Ag-coated MOF can be further improved, and the release of silver ions is reduced. Compared with a common PE preservative film, the composite film prepared on the basis has better barrier capacity and mechanical property, and has antibacterial, anti-ultraviolet and anti-oxidation effects. The multifunctional preservative film is convenient to use and low in price, and has an important application prospect in the aspect of fresh-keeping packaging of meat products.

The invention discloses a preparation method of a polyphenol-containing medical adhesive. The preparation method comprises the following steps: respectively preparing a gelatin solution, a gallic acid solution and a tea polyphenol solution; mixing the gelatin solution and the gallic acid solution, and reacting at 40-60 DEG C for 6-12 hours to obtain a modified gelatin solution; mixing the tea polyphenol solution with the modified gelatin solution, adding an alkaline solution to adjust the pH value to 6.5-8.0, and uniformly mixing to obtain a mixed solution; the mixed solution is aged at 20-40 DEG C, water generated in the aging process is removed, and the polyphenol-containing medical adhesive is obtained. According to the preparation method of the polyphenol-containing medical adhesive, a gelatin protein molecular chain is used as a framework material, gallic acid is introduced into the protein molecular chain, tea polyphenol is used as a main chain cross-linking agent, the polyphenol-containing medical adhesive is prepared, a phenolic hydroxyl group can penetrate through a water boundary layer on the surface of a base material to form an adhesive bond with the base material, and the medical adhesive has the advantages that the water boundary layer can penetrate through the water boundary layer; good wet adhesion is shown on tissues.

This invention discloses an anaerobic biodegradable masterbatch for cast film of sanitary materials, characterized in that its main components, by mass percentage, include: 0.5-3% cypermethrin, 3-6% copper sulfate, 0.1-0.5% metal inorganic salt coating agent, 1-4% ammonium molybdate, 5-10% PLA, 5-10% nano starch, 1-5% carbamide, 7-12% fumed silica, and the balance being a biodegradable resin carrier. The preparation method includes dispersion treatment, centering treatment, structuring treatment, carrier implantation, and plasticizing granulation. The invention also discloses an anaerobic biodegradable cast film for sanitary materials, comprising the following components by mass percentage: 83.4%-97.13% PE-based cast film substrate for sanitary materials, 1-5% PE wax, 1-7.5% degradation masterbatch, 0.15-0.3% dispersant, 0.02-0.2% antioxidant, 0.2-0.6% white oil, 0.5-3% PE grafted maleic anhydride, and 0.2-2% stabilizer. The manufacturing method includes: material preparation, calcium carbonate pretreatment, melting, filtration, and casting. This invention achieves complete anaerobic biodegradation of PE cast leak-proof and breathable films, and also has antibacterial properties during normal use, making it suitable as a breathable film and base film for disposable sanitary materials.

This invention provides a plant-based gel patch and its preparation method. The plant-based gel patch is prepared by mixing and freezing the following components, including modified polyvinyl alcohol, modified chitosan, functionalized borate ester, and distilled water; the preparation method is as follows: (1) modification of chitosan; (2) synthesis of functionalized borate ester; (3) preparation of allyl dihydrocaffeic acid; (4) graft modification of polyvinyl alcohol; (5) molding of the plant-based gel patch; the plant-based gel patch prepared by this invention can be used as a dressing for skin wound healing, and has antibacterial, good adhesion and self-healing ability.

The application discloses a composite solid decoloring powder and a preparation method thereof, and belongs to the technical field of water treatment agent preparation. The modified nano titanium dioxide is obtained by coating titanium dioxide with 3-methyl acrylic acid sulfopropyl potassium salt grafted polydopamine. The titanium dioxide has photocatalytic effect and antibacterial property, can catalytically decompose pollutants in sewage, inhibit the breeding of bacteria in water, and can catalytically decompose free formaldehyde in dicyandiamide formaldehyde polycondensate. The modified nano titanium dioxide is loaded on phenolic resin foam, and after calcination, the nano titanium dioxide / foam carbon powder is formed. The large specific surface area and porous property of the foam carbon can increase the capture and fixation of free formaldehyde, and can synergistically accelerate the catalytic degradation of formaldehyde with the titanium dioxide. The dicyandiamide formaldehyde polycondensate grafted with castor oil is in-situ polymerized on the surface of the matrix. The castor oil grafting can significantly improve the dicyandiamide formaldehyde polycondensate, significantly increase the molecular weight, and increase the capture capacity.

The invention belongs to the technical field of fertilizers, and particularly relates to a spraying film-forming type spraying fertilizer and an application method thereof.The spraying fertilizer is prepared from, by mass, 5-10 parts of modified nano titanium dioxide, 100-150 parts of a nutritional agent, 4-8 parts of potassium carboxymethyl cellulose, 4-6 parts of a dispersing agent and 0.2-0.4 part of a cross-linking agent. According to the invention, titanium dioxide is added into the spraying fertilizer to form a latticed structure, so that the loss of nitrogen elements in the soil is avoided on the premise of ensuring smooth breathing of the soil or plants, and the environmental pollution caused by nitrogen-containing gas is also avoided.

The invention relates to the technical field of raw materials of skin care products, and particularly discloses an acne-removing composition as well as a preparation method and application thereof. The acne-removing composition comprises the following components in parts by mass: 1.32-4.6 parts of a composite extract; 0.01 to 0.02 part of a skin repairing agent; 10 to 20 parts of a humectant; 75.38 to 88.67 parts of a solvent; the composite extract is prepared by compounding codium tomentosum extract, cryptomeria fortunei bud extract, nymphaea tetragona flower extract, reed extract and ganoderma sinensis extract. The acne-removing mask has the advantages that the acne-removing effect is more thorough, and acnes are not easy to relapse.

The invention relates to the technical field of oral cavity medicines, and discloses an antioxidant polyphenol sustained-release ointment suitable for oral cavity and a preparation method and application thereof, the antioxidant polyphenol sustained-release ointment comprises the following raw materials by weight: 0.5%-5% of antioxidant polyphenol, 20%-45% of a drug solvent, 1%-10% of a water-soluble polymer substance, 15%-40% of a water-based thickener, 1%-10% of a hydrophobic polymer, and 15%-40% of an ester plasticizer. The natural polyphenol is used as a main medicine, and the natural polyphenol has multiple functions of oxidation resistance, inflammation resistance, bacterium resistance, metal ion chelation, biological adhesion and the like; the slow-release ointment is prepared from an antioxidant polyphenol substance, and a slow-release system does not contain antibiotics, has no bacterial drug resistance problem and has relatively high biological safety; the antioxidant polyphenol sustained-release ointment does not contain water, can absorb peripheral gingival crevicular fluid after being coated in a periodontal pocket, and is converted into gel with higher strength to be more stably released locally; the preparation process is simple, mild in condition and low in cost.

The invention relates to a preparation method and application of a coating essential oil-loaded zeolite molecular sieve with water burst release performance. Specifically, the essential oil-loaded zeolite molecular sieve is provided, and the essential oil-loaded zeolite molecular sieve is prepared from essential oil and a zeolite molecular sieve, the coating essential oil-loaded zeolite molecular sieve further comprises a coating, the coating is prepared by coating with a coating solution, and the coated essential oil-loaded zeolite molecular sieve is a coating essential oil-loaded zeolite molecular sieve. The coating essential oil-loaded zeolite molecular sieve with the water burst release performance is very slow in release under the condition of normal temperature, can realize uniform release under certain temperature and humidity, has the burst release performance under the condition of water, and can be used for preparing the coating essential oil-loaded zeolite molecular sieve with the water burst release performance. The coating essential oil-loaded zeolite molecular sieve prepared by the invention provides very beneficial help for the application of the coating essential oil-loaded zeolite molecular sieve in products such as paper diapers and the like. Meanwhile, the preparation method of the coating essential oil-loaded zeolite molecular sieve is simple, the raw materials are easy to obtain, the cost is low, and the coating essential oil-loaded zeolite molecular sieve is very suitable for commercial production.

The invention relates to the technical field of TPU, in particular to recyclable TPU non-woven fabric leather and a preparation method thereof. The recyclable TPU non-woven fabric leather comprises a PU texture layer and a TPU melt-blown fabric layer which are sequentially arranged from top to bottom. The recyclable TPU non-woven fabric leather has the advantages of being antibacterial, breathable, soft, high in adhesive force and high in tensile property. The preparation method of the recyclable TPU non-woven fabric leather is simple in process, easy to control in operation and beneficial to industrial mass production, and the prepared recyclable TPU non-woven fabric leather is stable in quality and excellent in comprehensive performance.

The invention relates to the technical field of material preparation, and particularly discloses an epoxidized soybean oil-based antibacterial material containing epigallocatechin gallate and a preparation method of the epoxidized soybean oil-based antibacterial material. The epoxidized soybean oil-based antibacterial material containing epigallocatechin gallate is prepared from the following raw material components in parts by weight: 80 to 120 parts of epoxidized soybean oil; 0.1 to 1 part of epigallocatechin gallate; 60 to 100 parts of rosin ester; and 5-10 parts of phosphoric acid. According to the method, epigallocatechin gallate with antibacterial and antioxidant effects is added, so that the prepared epoxidized soybean oil-based antibacterial material has antibacterial performance.

The application belongs to the field of functional building materials, and particularly relates to an antibacterial cement mortar with Bi5O7I / BiOBr composite nano-material doped therein, a preparation method of the antibacterial cement mortar, and application of the antibacterial cement mortar in bacteriostasis, antibiosis and improvement of mechanical strength. The antibacterial cement mortar with Bi5O7I / BiOBr composite nano-material doped therein is composed of Bi5O7I / BiOBr composite nano-material, water, cement and sand; the mass of the Bi5O7I / BiOBr composite nano-material is 0.5% to 1.5% of the mass of the cement. The Bi5O7I / BiOBr composite nano-material is constructed, introduced into a cement-based material system to prepare the antibacterial cement mortar, so that the antibacterial cement mortar has antibacterial performance and mechanical strength is significantly improved.

The invention relates to the technical field of high polymer materials, in particular to a coating film capable of ensuring the super-hydrophobicity of a product and meeting the cleaning performance of the product. Therefore, the invention provides the bionic super-hydrophobic degerming film for the surface of the household paving material, and the bionic super-hydrophobic degerming film is applied to the super-hydrophobic modified layer with the concave micro-nano structure; the method is specially used in cooperation with a bionic super-hydrophobic layer. The membrane is prepared from palygorskite nanofibers, silicon dioxide nanoparticles, silane-polyurethane resin, tannic acid and titanium dioxide nanoparticles. Compared with the prior art, the bionic super-hydrophobic degerming film for the surface of the household paving material and the preparation method thereof have the advantages that the mass ratio of the solid component to the liquid component is kept balanced, so that mixing and coating are facilitated. Meanwhile, the proportion gives consideration to multiple functions such as mechanical property, chemical stability, antibacterial property and photocatalytic activity of the material.

The present application belongs to the technical field of cosmetic production, and discloses an acid-free acne-removing composition, comprising 10-20% of dipeptide-15, 1-5% of olive leaf extract, 5-10% of acetyl glucosamine, 0.1-1% of 10-hydroxydecanoic acid, 5-10% of yeast / zinc fermentation product, 1-5% of bisabolol, 5-10% of tetrahydromethylpyrimidine carboxylic acid, 1-10% of capryloyl glycine, 0.01-1% of polylysine, 28-32% of polyol and the balance of deionized water. Through the synergistic effect among the above multiple components, the antibacterial ability of the composition and the inhibitory effect on inflammatory factors 1L-1α and 5α-reductase are further improved. Moreover, the composition disclosed in the present application also has good anti-allergic ability. In addition, the present application also discloses the application of the acid-free acne-removing composition and a daily chemical product.

The present invention discloses a red kidney bean defensin and its antibacterial and antitumor activity and application, and belongs to the field of molecular biology technology. The present invention identifies and obtains a brand-new defensin D1 from red kidney bean, and the nucleotide sequence is shown in SEQ ID NO.1. Defensin D1 can be used to inhibit Staphylococcus epidermidis, Bacillus subtilis, and Pseudomonas aeruginosa. Further, the results of tumor inhibition activity identification show that it has anti-human breast cancer cells, human ovarian adenocarcinoma cells, human lung cancer cells, and human glioma cells. Defensin D1 has an antibacterial effect and also has the function of inhibiting tumor activity, has a wide range of application prospects, and its potential is worth further exploration.

The invention provides modified polyurethane as well as a preparation method and application thereof, and the modified polyurethane is a polymer obtained by carrying out chain extension reaction on a polyurethane prepolymer obtained by carrying out reaction on PLGA (poly (lactic-co-glycolic acid)) and polyisocyanate, a chain extender C2-6 aliphatic diamine and chitosan. According to the invention, chitosan and PLGA are introduced into the molecular structure of polyurethane at the same time, and the prepared polyurethane flexible material can be degraded at a certain rate and has antibacterial performance. In addition, due to the introduction of chitosan, the mechanical property of the flexible material prepared from polyurethane can be improved. The polyurethane flexible material prepared by the invention has the advantages of good mechanical and biocompatibility, controllable degradation rate and excellent antibacterial property.

The invention relates to the technical field of pet oral cavity cleaning water, in particular to efficient antibacterial pet oral cavity cleaning water and a preparation method thereof, the pet oral cavity cleaning water comprises an extract, an inactive component, a synergist, an auxiliary agent and water; the extracts comprise a green tea extract, a herba violae extract, a pomegranate extract, a vanilla extract, erythritol and fructo-oligosaccharide; the inactive components comprise glycerol, citric acid and food-grade sodium bicarbonate; the auxiliaries comprise a flavoring agent, a thickening agent and a clarifying agent. The pet oral cavity cleaning water designed by the invention has the effects of inhibiting bacteria, preventing decayed teeth, preventing dental plaque formation, preventing gingivitis and gingivitis, removing ozostomia and coordinating intestines and stomach, and also has the advantages of no artificial perfume, pigment, filler or preservative and reduction of risks caused by pet swallowing.

The invention discloses a phase change temperature control polyurethane material and a preparation method thereof, and relates to the technical field of high polymer materials. When the phase change temperature control polyurethane material is prepared, vanadium dioxide and 4-anilino triethoxy silane react to prepare pre-modified vanadium dioxide; the pre-modified vanadium dioxide and N, N-dimethyl-4-nitrosoaniline are subjected to a reaction, and modified vanadium dioxide is prepared; the preparation method comprises the following steps: polymerizing phenylboronic acid and 3-chloropropylmethyldimethoxysilane, and blocking by using 1, 3-bis (3-hydroxypropyl)-1, 1, 3, 3-tetramethyldisiloxane, so as to prepare a borosiloxane oligomer; the preparation method comprises the following steps: polymerizing a borosiloxane oligomer, 1, 6-hexanediol and isophorone diisocyanate to prepare functional polyurethane; and uniformly mixing the functionalized polyurethane and the modified vanadium dioxide, and carrying out compression molding to obtain the phase-change temperature-control polyurethane material. The phase-change temperature-control polyurethane material prepared by the invention has excellent energy-saving temperature-control, anti-aging, antibacterial, self-healing and mechanical properties.

The invention provides a sauna blanket, and relates to the technical field of sauna blankets, a blanket body internally contains a heating layer, the heating layer is composed of a heating element and an insulating material, the heating element is electrically connected with a controller, the controller is connected with a power line, after the power line is connected with a power supply, the blanket body internally contains a heat conduction layer, and the heat conduction layer enables the heating layer to transfer heat more uniformly; the sauna blanket is connected with a power supply to generate heat, the heat conduction layer is arranged in the blanket body and made of aluminum foil cloth, the heat conduction area can be effectively increased by arranging the heat conduction layer in the heating interior, the heating element can transfer heat more evenly, and therefore the heating efficiency is improved, meanwhile, the heat conduction layer has the heat preservation performance, the heat conduction area is effectively increased, and the service life of the sauna blanket is prolonged. The heating element can transfer heat more uniformly, so that the heating efficiency is improved, further, the aluminum foil cloth can effectively prevent radiation or ultraviolet irradiation, the heating element is protected from being damaged, and the service life of the heating element is prolonged.

The invention discloses a process for producing a preservative film by using a plant-based plasticizer, and relates to the technical field of preservative films. The preservative film is prepared from the following raw materials in parts by mass: 100 to 120 parts of polylactic acid, 10 to 20 parts of poly (butyl adipate-butylene terephthalate), 2 to 5 parts of the plant-based plasticizer, 0.05 to 0.1 part of an antibacterial agent, 5 to 10 parts of modified corn starch, 2 to 3 parts of corn straw fiber, 10 to 20 parts of polymerized rosin and 2 to 5 parts of triethyl citrate. Wherein the plant-based plasticizer adopts epoxidized soybean oil grafted polylactic acid and ricinoleic acid; the toughness of polylactic acid is synergistically improved, and the prepared preservative film has good mechanical properties and air and moisture permeability.

The invention relates to a light odorless water-based indoor decorative coating and a preparation method thereof. The coating is prepared by mixing the following raw materials in percentage by weight: 15%-20% of water, 0.1%-0.2% of a pH regulator, 0.1%-0.2% of a wetting agent, 0.2%-0.4% of a dispersing agent, 0.20%-0.4% of a defoaming agent, 0.2%-0.4% of a thickening agent, 0.25%-0.5% of bentonite, 37%-40% of sintered colored sand, 3%-5% of shell powder, 3%-5% of diatomite, 3%-6% of closed cell perlite particles and 21%-25% of odor-free acrylic emulsion. The coating is prepared from 1%-3% of hollow glass microspheres, 0.5%-1% of a propylene glycol antifreezing agent, 0.65%-1% of a coalescing agent, 0.2%-0.4% of a mildew preventive, 0.1%-0.25% of a bactericide, 1%-3% of nano copper paste and 0.1%-0.15% of an antibacterial agent. The light odorless water-based indoor decorative coating prepared by the invention not only has excellent decorative performance, but also has multiple functions of environmental protection, antibiosis, mildew resistance, weather resistance, heat insulation, good texture performance and the like.

The invention belongs to the technical field of implantation medical instruments, and relates to a low-migration high-transparency anti-adhesion medical PVC (polyvinyl chloride) paste as well as a preparation method and application thereof. The low-migration high-transparency anti-adhesion medical PVC paste comprises the following main components: 100 parts of anti-adhesion PVC resin powder, 60-100 parts of a plasticizer, 1-3 parts of a stabilizer, 0.4-0.7 part of a defoaming agent and 0.1-0.4 part of a rheological additive. The preparation method comprises the following steps: firstly, uniformly mixing the plasticizer, the stabilizer and the defoaming agent to obtain a mixture A; adding anti-adhesion PVC resin powder into the mixture A, and uniformly mixing to obtain a mixture B; and finally, adding a rheological additive into the mixture B, uniformly mixing, filtering to remove impurities, and fully and uniformly mixing in vacuum, so that the preparation method is simple and easy to operate. The paste is injected into a trachea cannula provided with a spring and is heated and cured to obtain a reinforced trachea cannula, so that the catheter can be endowed with excellent anti-adhesion and antibacterial properties, and the clinical infection risk is greatly reduced; the hydrophilic property is high, and the clinical user experience is improved.

The invention relates to the technical field of plant fermented product processing, in particular to a preparation method of a cistanche and oat compound fermented beverage. The specific technological process of the preparation method of the cistanche and oat compound fermented beverage comprises the following three technical processes: 1, preparation of cistanche pulp, 2, preparation of whole oat pulp, and 3, fermentation: fresh cistanche and whole wheat and oat powder are used as raw materials, and are fermented by lactobacillus plantarum, so that a novel plant-based fermented beverage is developed, and the fresh cistanche and whole wheat and oat compound fermented beverage is prepared. In the product preparation process, through the fermentation process, functional substances in the cistanche are effectively released, the taste is improved, meanwhile, the healthy efficacy of the oat fermented beverage is improved, a healthy food product with good nutritional quality and sensory quality is formed, a new technology is provided for development of plant-based beverages with whole oat as the raw material and processing and utilization of the cistanche, and the method is worthy of popularization and application. The product is sour, sweet and delicious, rich in nutrition, mellow in taste, full in flavor and low in production cost, and has a very good market prospect.

The invention relates to the field of daily chemical external cleaning products, in particular to a compound containing a soapberry extract and a preparation method of the compound. The compound containing the soapberry extract comprises the following components in percentage by mass: 1-5% of the soapberry extract, 5-15% of a polygonum multiflorum root extract, 1-10% of a tropaeolum majus extract, 1-5% of a ganoderma atrum extract, 1-5% of a dendrobium officinale extract and a solvent. The preparation method comprises the following steps: uniformly mixing the raw materials to obtain the compound containing the soapberry extract. The compound provided by the invention is mainly used in washing or cleaning products such as shampoo, shower gel and the like, and has good effects of cleaning, resisting bacteria, moisturizing, resisting ageing and the like.

The present application relates to the technical field of biomedical materials, in particular to a non-viral gene carrier and a preparation method and application thereof. The non-viral gene carrier prepared by EDC / NHS cross-linking reaction of baicalin and polyethyleneimine can be used for gene delivery and preparation of a gene therapy drug. The present application further provides a nano-complex composed of the non-viral gene carrier and nucleic acid, which can be used for gene delivery and preparation of a gene therapy drug. The nano-complex can not only effectively deliver target genes into cells, but also synergize miR-34a and baicalin to jointly exert an anti-tumor effect, greatly enhancing the anti-tumor treatment efficacy.

The application relates to a kind of exoskeleton auxiliary devices for relieving muscle fatigue injury, and relate to the technical field of exoskeleton equipment, including upper limb exoskeleton assembly and lower limb exoskeleton assembly, the upper limb exoskeleton assembly and lower limb exoskeleton assembly are all unpowered power assisting structure, and modular adjustable design is adopted;The upper limb exoskeleton assembly includes shoulder joint energy storage assembly, screw adjusting mechanism and shoulder joint part, and the lower limb exoskeleton assembly includes sequentially connected lower limb thigh assembly, lower limb calf assembly, ankle joint part and foot bottom support part, the upper limb exoskeleton assisting range in the application is limited to the included angle of 45°~90° with the trunk, matches the core action interval of operation, the shoulder joint is designed through three degrees of freedom to match the human motion characteristics, the lower limb takes hip, knee and ankle as the core, releases elastic potential energy through energy storage component, specifically reduces the limb load, effectively reduces the risk of muscle strain caused by long time operation.

The present invention relates to a Chinese medicine composition, which is prepared from the following Chinese medicines in parts by weight: 1-20 parts by weight of Corydalis yanhusuo, 1-20 parts by weight of Evodia rutaecarpa, 1-20 parts by weight of cloves, 1-20 parts by weight of Radish seeds, 1-20 parts by weight of Linderae rutaecarpa, 1-20 parts by weight of Chuanxiong, 1-20 parts by weight of Rhizoma Alismatis, 1-20 parts by weight of Stigma maydis and 1-20 parts by weight of Gleditsia sinensis. The Chinese medicine composition of the present invention can quickly and effectively enter the human body through Shenque acupoint application, achieve the effect of warming the interior to relieve spasm and relieve pain, for alleviating and improving the symptoms of intestinal adverse reactions caused by intussusception, preventing the recurrence of intussusception has a good effect, and is better in combination with hot compress with moxa salt bag. The Chinese medicine composition of the present invention has high safety in clinical use, and few adverse reactions occur.

This invention discloses a multifunctional atomizing agent for ancient book restoration, its preparation method, and its application, belonging to the field of ancient book preservation technology. The atomizing agent is a mixed solution containing chitosan quaternary ammonium salt and zirconium carbonate. The method for treating ancient books using this atomizing agent is as follows: after cleaning the ancient books to remove impurities, they are placed in a sealed deacidification device. The mixed solution of chitosan quaternary ammonium salt and zirconium carbonate is atomized and then introduced to spray the pages of the ancient books. The books are then dried in a ventilated environment at ambient temperature to complete the treatment. The atomizing agent and treatment method of this invention have multifunctional effects on ancient books, including deacidification, strengthening, consolidation, antibacterial properties, and anti-aging. It avoids the uneven treatment caused by the coffee ring effect and phenomena such as yellowing and fading. Furthermore, it simplifies the ancient book restoration process, enabling one-step atomization, significantly shortening the processing flow, reducing processing operations, shortening the processing cycle, and significantly improving processing efficiency.

The application discloses soil sporosarcina CH23 and a method and application of synthesizing nano selenium by using the soil sporosarcina. Sporosarcina soli The nano selenium synthesis bacteria are soil sporosarcina (Sporosarcina siccitae) CH23, which are preserved in a Guangdong Microbial Culture Collection Center (GDMCC) and have a preservation number of GDMCC No. 67015. The soil sporosarcina CH23 can efficiently convert high-toxicity selenite into non-toxic nano selenium. The required culture condition is simple, low in cost and easy to operate. The produced nano selenium particles have the advantages of non-toxicity, high biological activity, stable property and almost no other selenium byproducts, and have the effects of antibiosis, antioxidation and anticancer in the medical field. In addition, the nano selenium can be used as a nano selenium fertilizer for plant selenium nutrition supplement, and has the advantages of higher efficiency, safety and environmental protection compared with traditional selenite selenium fertilizer.