684 results about "Antimicrobial action" patented technology

The present invention relates to Ag and RE doped nanometer zinc oxide and its preparation process and application in photocatalysis to degrade organic matter and killing bacteria. Ag, RE metals La, Ce, Pr, Nd, Sm, etc. are doped into nanometer zinc oxide to raise its photocatalytic activity in degrading harmful chemical matter and resisting bacteria. Under lighting, the doped nanometer zinc oxide has higher photocatalytic activity and higher antibacterial capacity; and in case of no lighting, it has relatively high antibacterial effect owing to the antibacterial effect one Ag, Zn, RE and other antibacterial ions. The preparation process may be an organic matter complexing process or a sprying pyrolysis process. The doped nanometer zinc oxide may be used through mixing with other material, or used as additive added into plastic, ceramic, fiber, timber, rubber, glass, cement, metal and other material to form various kinds of photocatalytic antibacterial material and product.

The present invention is directed toward an antimicrobial hand sanitizing lotion in the form of a medicated polymer / emulsion based product and the method by which it is produced. The product is intended to be used as a topical antimicrobial and skin protective lotion and contains 2,4,4'-trichloro-2'-hydroxydiphenyl ether as the antimicrobial agent of choice in a base which forms a hydrophobic protective barrier, having persistent antimicrobial properties, upon application to the skin.

The present invention discloses one kind of ultraviolet ray cured nanometer antibiotic woodenware lacquer and its preparation process. The ultraviolet ray cured nanometer antibiotic woodenware lacquer includes epoxy acrylate, polyurethane acrylate, diluent, nanometer inorganic antiseptic, nanometer inorganic stuffing and photoinitiator. The preparation process includes adding nanometer inorganic antiseptic and nanometer inorganic stuffing into the diluent, stirring to disperse homogeneously, adding epoxy acrylate, polyurethane acrylate and photoinitiator and mixing homogeneously. The woodenware lacquer with nanometer inorganic antiseptic can inhibit the growth and propagation of bacteria and microbes to produce long term antibiotic effect.

The invention discloses a natural-fiber-reinforced polypropylene composite material with mildewproof and antimicrobial properties and a preparation method thereof. The natural-fiber-reinforced polypropylene composite material with mildewproof and antimicrobial properties comprises the following raw materials in parts by weight: 10-35 parts of natural fiber, 50-85 parts of polypropylene, 1-10 parts of compatilizer, 0.5-2 parts of coupling agent, 0.1-1 part of antioxidant, 0.5-2 parts of lubricant and 0.2-2 parts of mildewproof and antimicrobial agent. By using the natural fiber, which has the advantages of low price, abundant resources, high specific modulus and low density, to prepare the reinforced polypropylene composite material for vehicles, the production cost can be lowered. By using the combination of the alkali solution, coupling agent and compatilizer to treat the natural fiber, the hydroscopic property of the fiber is lowered. By adding the mildewproof and antimicrobial agent, the mildewproof and antimicrobial properties of the natural-fiber-reinforced polypropylene composite material with mildewproof and antibacterial functions can be greatly improved, so that the composite material is beneficial to human health in application, and has longer service life.

An antibacterial 3,5-substituted oxazolidione derivative and its salt with strong activity to resist gram-position bacteria, their preparing process, their application in preparing antibacterial agents and the antibacterial medicine containing them as active components are disclosed.

Precipitated silica product having low surface area and enhanced flavor compatibility. The precipitated silica product is especially well-adapted for use in dentifrices containing cetylpyridinium chloride, which do not attach to the low surface area silica product in a meaningful level and thus remain available for antimicrobial action. Processes for making the low surface area silica product are also provided.

This application is directed to compositions of particular combinations of antimicrobial components which may be incorporated into a polymeric molding compositions or polymeric coating compositions. The antimicrobial components include a alkylaminoalkyl(meth)acrylate polymer (b) and antimicrobial metal (a) containing components which lead to improved antimicrobial effects. The compositions are of special interest to durable touch surfaces found in hospitals and clinics. The compositions are also suitable for use in biomaterials such as catheters and the like.

The invention discloses a nano-silver antibacterial composite modified by modified chitosan and a preparing method of the nano-silver antibacterial composite. According to the nano-silver antibacterial composite and the preparing method of the nano-silver antibacterial composite, the chitosan with the small molecule quantiy and good water solubility is selected and used as a raw material, chemical modification is conducted on the chitosan by using small molecules which are capable of having chelation with nano-silver particles, the modified chitosan is arranged on the surfaces of the nano-silver particles in a covalent modification mode, and the novel nano-silver antibacterial composite is prepared. The prepared nano-silver antibacterial composite modified by the modified chitosan has good water solubility and dispersibility and can be stably dispersed in a water solution in a long term without aggregation under the conditions of high salinity and wide pH. The prepared nano-silver antibacterial composite modified by the modified chitosan enables the antibacterial property of the chitosan and the antibacterial property of nano-silver to be in effective synergy, the antibacterial performance is good, and the nano-silver antibacterial composite can serve as a water coating agent to perform the surface antibacterial function on the surfaces of materials and can also permeate into fiber type materials to perform the deep internal antibacterial function.

The invention belongs to the field of aquaculture or feed, relates to a aquaculture feed, and especially relates to an alga immunopotentiation compound feed for litopenaeus vannamei. The invention at first provides an immunity strengthening agent for litopenaeus vannamei feed, and the agent is obtained through enzymatic hydrolysis and fermentation of an alga composite. The alga composite is composed of following components in parts by dried weight: 40 to 50 parts of asparagus, 15 to 25 parts of enteromorpha, 10 to 20 parts of ulva lactuca, 5 to 15 parts of laver and 5 to 15 parts of undaria pinnatifida. The invention further prepares a compound feed for litopenaeus vannamei by utilizing the immunity strengthening agent. The alga immunity strengthening agent contains algae polysaccharide, which has the effect of strengthening animal immunity, acrylic acid, terpenes, brominated phenolic and some sulfocompounds, which have the antiseptic effect, and sulphated polysaccharide, which has the antivirus effect. The litopenaeus vannameis fed on the alga immunopotentiation compound feed have a strong anti-stress performance, the body's immunity ability is improved, survival rate is high and culture benefit is remarkable.

The present invention solves the issue of bacterial infection by medical devices such as intracorporeal indwelling catheters. The present invention relates to an ultrasonic medical apparatus including a medical device (titanium oxide coated medical device 10) covered with a titanium oxide material (titanium oxide alone or a titanium oxide composite material) and ultrasonic irradiation means 20. Ultrasonic irradiation of the titanium oxide material, which exists on a surface of the medical device, causes the surface of the medical device to exert beneficial effects such as antibiotic action, the stimulation of angiogenesis, and the degradation of a blood clot and a biofilm.

A formulation for a high performance Photoluminescent powder coat and a process by which a substrate is covered with multiple layers to give both photoluminescent and other advantageous qualities to said substrate. The first layer applied to the substrate is a retroreflective layer to provide retroreflective action to the second photoluminescent layer. A variety of translucent layers can then be applied over the photoluminescent layer to give such properties as antibacterial or antimicrobial action, non-slip surface or durability, and special textures. The layers can also provide such advantageous qualities as temperature resistance and electroconductivity or electrodissipation. Although this process has a variety of applications, it gives specific advantage to all forms of door hardware, both providing illumination for low-light conditions and advanced qualities such as heat or flame resistance.

The invention discloses feed for meat ducks aged 0-21 days, which comprises, but not limited to, boiled milet, boiled egg yolk, bean meal, bran, fish meal, shell powder, salt, lard and traditional Chinese medicine additive. The raw material medicines of traditional Chinese medicine additive comprise acanthopanax roots, oldenlandia, schisandra, roots of tuber stemona, herba patriniae, cordate houttuynia, skullcap, isatis leaves, white atractylodes rhizome, red sage roots, astragalus roots, angelica, medical stones, malaytea scurfpea, dodder, white peony roots, purslane, land tax and labor levy, and golden buckwheat rhizome. The feed has the advantages that the nutrition is rich, which can greatly improve the growth rate of green ducks and promote the development of the green ducks; the additive has both medical and nutrient functions, thus being capable of preventing diseases and improving the productivity; the additive not only can sterilize and perform bacteriostasis, but also can regulate the immune function of bodies, therefore the feed has the function of nonspecific antibiosis, thereby greatly improving the total amount of ducks for sale and the yield of duck meat.

The invention discloses a preparation method of a nano silver antibacterial mother liquor through two-step polymerization, belonging to the field of nano materials. The preparation method comprises the steps of: firstly initiating oil-soluble monomers to polymerize in an aqueous solution by using an oil-soluble initiator to obtain a polymer core; then adding water-soluble monomers to polymerize into a polymer shell; and adding silver nitrate and then reducing to finally obtain the nano silver antibacterial mother liquor with good antibiotic property. The nano silver antibacterial mother liquor uses core-shell-structure polymer latex particles as the carrier so that the mother liquor has good stability. The preparation method of the nano silver antibacterial mother liquor through two-step polymerization has low preparation cost and a simple production process; the silver nano particles are not easy to agglomerate and can exist stably for a long time; the latex cannot be deteriorated and can be stored for a long time; and meanwhile, the nano silver antibacterial mother liquor is not sensitive to pH and temperature, has a good antibacterial effect and a wide range for later-stage application. The nano silver antibacterial mother liquor is mixed with a commonly used commercial water-based paint so that the paint without an antibacterial effect has good antibacterial property; and meanwhile, the diluted nano silver antibacterial mother liquor is coated on the wall surface of the water-based paint so that the same extremely good antibacterial effect is detected.

The invention discloses a preparation method and application of a composite antibacterial electrostatic spinning nanofiber membrane. The preparation method is used for an antibacterial air filtering material for masks. The material is prepared by taking polyvinyl alcohol, chitosan, vinyl amine-copolymerized-3-allyl-5,5-dimethyl hydantoin as raw materials. The preparation method comprises the following steps: uniform blend spinning is carried out on the polyvinyl alcohol and the chitosan to obtain a material as an innermost-layer nanofiber membrane and an outermost-layer nanofiber membrane, andan auxiliary antibacterial effect and a mechanical supporting effect are achieved; an intermediate layer is prepared by carrying out blend spinning on the polyvinyl alcohol and the vinyl amine-copolymerized-3-allyl-5,5-dimethyl hydantoin, and a main antibacterial effect is achieved; and a three-layer nanofiber membrane obtained by spinning is placed in glutaraldehyde steam for cross-linking treatment. The preparation method disclosed by the invention is simple and feasible and is controllable in condition, and the composite antibacterial electrostatic spinning nanofiber membrane is excellentin interception effect and sterilization effect and has important value and significance in the field of antibacterial filtering materials for masks.

A water feeding apparatus (300) has an ion eluter (100) and a shower emitter (200). The shower emitter (200) receives water via a coupling pipe (250) from the ion eluter (100), and sprays the water, in the form of a shower, onto laundry. Liquid droplets in the form of a shower are small and easy to dry, and thus produce crystals having smaller particles (with large surface areas), having more lattice defects, and easier to dissolve. With these crystals attached to the laundry, when the crystals make contact with moisture next time, the silver ion in the liquid droplets easily dissolves. Even when the laundry is made of water-repellent or hydrophobic cloth, the solution dries up on the surface of the cloth before water is repelled. Thus, even this type of laundry can benefit from the antimicrobial effect of the silver ion.

The invention relates to a long-acting antimicrobial water-based environment-friendly paint and a preparation method thereof. A resin emulsion containing antimicrobial group is used as the main component of the base material of the paint, and the paint can have long-acting antimicrobial property without adding any other antimicrobial agent. The long-acting antimicrobial water-based environment-friendly paint is prepared from 25-40% of resin emulsion containing antimicrobial group, 5-35% of pigment or colorant, 15-30% of filler, 0.5-5% of wetting dispersant, 0.2-1.0% of neutralizer, 0.2-0.5% of defoaming agent, 0.2-0.5% of thickening rheological agent, 2-8% of film-forming assistant, 0-5% of antifreezing agent, 0-10% of functional assistant and 10-25% of deionized water. The long-acting antimicrobial water-based environment-friendly paint has a long-acting antimicrobial action, and also has the advantages of excellent water resistance, weather resistance, fouling resistance, scratch resistance, solvent resistance and high storage stability.

The present invention is directed toward an antimicrobial hand sanitizing lotion in the form of a medicated polymer / emulsion based product and the method by which it is produced. The product is intended to be used as a topical antimicrobial and skin protective lotion and contains 2,4,4'-trichloro-2'-hydroxydiphenyl ether as the antimicrobial agent of choice in a base which forms a hydrophobic protective barrier, having persistent antimicrobial properties, upon application to the skin.

The present invention relates to functional composite particles for the oral care sector, more particularly for toothpastes and mouthwashes, which are charged with active ingredients which ensure a long-term antimicrobial or antibacterial effect in the oral cavity and hence reduce the formation of plaque and halitosis. The invention further relates to a process for producing these composite particles and also to their use for producing oral hygiene articles.

The invention relates to a method for preparing a long-lasting antibacterial polyacrylate emulsion. A polymerisable emulsifier containing cationic groups and nonionic groups serves as a main component; and the long-lasting antibacterial polyacrylate emulsion can be prepared through emulsion polymerization without compounding. The long-lasting antibacterial polyacrylate emulsion comprises the following components in part by weight: 25 to 40 parts of hard monomer, 20 to 30 parts of soft monomer, 1.5 to 5 parts of cross-linking agent, 0 to 5 parts of modifier, 1.5 to 3 parts of polymerisable emulsifier containing cationic groups and nonionic groups, 1 to 2 parts of pH value buffer, 0.2 to 0.5 part of initiator and 45 to 55 parts of deionized water. Antibacterial groups are fixed on a resin structure in a way of chemical bonds, so the defect of adding an antibacterial agent by a physical method is overcome, and the emulsion is not easy to erase and dissolve and has a long-lasting antibacterial effect. At the same time, the emulsion also has very high freeze thawing resistance, water resistance, weather resistance, contamination resistance, storage stability and stability of electrolyte resistance; moreover, a dope has a long-lasting antibiotic property after the long-lasting antibacterial polyacrylate emulsion is added into the dope without additional addition of other antibacterial agents.

The invention discloses a preparation method for water-absorbing anti-microbial preservative paper capable of indicating freshness of fresh food. The preparation method comprises the following steps: (A) selecting color-sensitizing materials; (B) selecting a paper-based material with a water-absorbing function; (C) respectively dissolving different color-sensitizing materials into corresponding solvents, thereby forming color-sensitizing solutions for later use; (D) selecting different essential oils having anti-microbial effect to the fresh food; (E) uniformly mixing the different essential oils, coating agents, dispersing agents, color-sensitizing accelerants and the color-sensitizing solutions at 20-60 DEG C, thereby forming coating solutions; and (F) uniformly coating the paper-based material prepared from step (B) by the coating solutions by utilizing a coating machine, and then drying, thereby acquiring the water-absorbing anti-microbial preservative paper capable of indicating freshness of fresh food. The preservative paper prepared according to the preparation method provided by the invention not only has the fresh-keeping functions, such as seeping juice absorption and antibiosis, but also can directly indicate the freshness of fresh food. The preservative paper can be used together with the present food packaging, is convenient and practical and has wide application prospect.

A Bacillus strain characterized by (i): sensitivity for ampicillin, vancomycin, gentamicin, kanamycin, streptomycin, erythromycin, clindamycin, tetracycline and chloramphenicol; (ii) antimicrobial activity against E. coli and Clostridium perfringens; and (iii) a sporulation percentage of at least 80 when measured after 2 days of incubation. The invention further relates to a method for selecting such strains. Many of the identified strains according to the invention are of the species Bacillus amyloliquefaciens. Some of the Bacillus amyloliquefaciens were further identified as Bacillus amyloliquefaciens subsp. amyloliquefaciens whereas others were identified as amyloliquefaciens subsp. plantarum. A Bacillus strain of the invention may be used as a feed additive to animal feed where it has a probiotic effect.

The present invention provides a 4-oxoquinolizine antibacterial agent having a 2-pyridone skeleton as a partial structure and also having a strong antibacterial effect on gram-positive bacteria, gram-negative bacteria or anaerobic bacteria. The compound having the following formula (I) or a pharmaceutically acceptable salt thereof:wherein:R1 represents hydrogen atom or a carboxyl-protecting group,R2 represents hydrogen atom, a halogen atom, a lower alkyl group, a lower alkoxyl group or hydroxyl group,R3 represents phenyl group or an aromatic substituent selected from the group consisting of 5-membered and 6-membered heterocyclic groups and R3 has a substituent selected from the group consisting of a hydrogen atom, a lower alkyl group, a lower alkoxyl group, a nitro group, a cyano group, an amino group, an acyl group, a carbamoyl group and a ureido group, andR4 represents a hydrogen atom or a halogen atom.