644 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.

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.

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 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.

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.

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 invention involves preparation method of powder metallurgy composite antibiotic non-corrodible steel equipment, it includes: shaping non-corrodible steel powder and preparing green compact; adding antibiotic metal powder into non-corrodible steel powder and preparing mixing powder; shaping the green compact and mixing powder in one time, coating the outside of green compact with mixing powder uniformly, then adglutinating, preparing the powder metallurgy composite antibiotic non-corrodible steel equipment after thermal treatment, the equipment includes the integral body of knives, scissors, clamps, forks, bowls, pans, spoons, tweezers, cups or its combinations. The antibiotic metal ion in the surface antibiotic layer can make the equipment play antibiotic role in the utilization process.

The invention relates to an environmentally-friendly antibacterial powder coating, belonging to the technical field of coating material and aiming to solve the technical problems that the antibacterial function of the coating in the prior art is single and the antibacterial capacity ceases to be effective quickly. The environmentally-friendly antibacterial powder coating mainly comprises the following raw materials by weight: 30-40% of polyester, 30-40% of epoxy resin, 0.5-1.5% of a leveling agent, 0.5-1.5% of a brightening agent, 8.0-16% of an anion generating agent, 8.0-12% of a coupling agent, 2.0-4.0% of an antibacterial agent and 3.0-6.0% of a cross-linking agent. The coating can generate anions of about 1,000/cm<3> and has a good antimicrobial effect, the antibacterial rate of more than 95% and the multiple effects of causing less pollution to the environment.

The invention belongs to the field of medical products, particularly relates to an antibacterial hydrogel wound coating film and a preparation method thereof, and also relates to a wound paste prepared by using the coating film. The antibacterial hydrogel wound coating film comprises the following components by mass percent: 0.1-5% of norfloxacin silver, 5-30% of polymer, 0-10% of plasticizer and the balance of water. The antibacterial hydrogel wound coating film disclosed by the invention can be directly used for covering a wound to treat various wounds caused by burns, scalds, trauma, surgical operations and the like, and is capable of absorbing body fluid secreted by the wounds and keeping the wounds in a clean and moist state. Meanwhile, the coating film also has good antibacterial effect, so that invasion of bacteria is cut off; infection is prevented; union of the wounds can be facilitated.

The invention discloses a medicine-carrying nano antibacterial super-smooth coating for marine organisms. The medicine-carrying nano antibacterial super-smooth coating comprises a medicine-carrying nano antibacterial slow-release coating and a hydrophilic coating, wherein the medicine-carrying nano antibacterial slow-release coating comprises medicine-carrying nano particles and antibacterial substances; the medicine-carrying nano particles have effects of restraining and preventing bacteria and sustaining release, and have bacteria-inhibiting effects on escherichia coli, staphylococcus aureus, candida albicans and the like which cause urinary tract infection easily; the antibacterial substances further can improve the antibacterial effects of the medicine-carrying nano antibacterial slow-release coating, so that the medicine-carrying nano antibacterial slow-release coating achieves lasting and stable antibacterial effects; after contacting water, substances of the hydrophilic layer can quickly form a lubricating film, so that the conduit surface is sufficiently and efficiently lubricated, and the conduit is conveniently and quickly implanted; after the conduit is implanted, the hydrophilic polymer is dissolved into water to play synergetic bacteriostatic action with the medicine-carrying nano particles and the antibacterial substances, and the loaded bacteria-restraining components are slowly released to finally achieve the lasting and stable antibacterial effects.