649results about How to "High bactericidal activity" patented technology

The invention discloses a one-variable solid effervescent tablet and a preparation method for the tablet. The material system of the effervescent tablet comprises chlorite, solid acid source, free halogen source, activated Promoter, desiccant, bond, release agent, effervescent and surfactant. The preparation technique includes: after the coating processing with chlorite grains, drying and mixing well with other raw materials according to a specific proportion and technique requirements to prepare compound raw materials, and then pressing into tablets with different specification and shaping on the tablet machine to fit for application in various occasions. The effervescent tablet can quickly release chlorine dioxide and acquire pellucid water solution of chlorine dioxide while dissolving in the water, which is high in stability, rapid in dissolving rapid and strong in bactericidal ability.

Disclosed is a method of preparing a biocide having improved durability of its biocidal activity as well as disinfection efficiency at an initial stage, comprising the steps of: (a) preparing stabilized alkali or alkaline earth metal hypochlorite having a pH at least 11 by mixing a chlorine oxidant including alkali or alkaline earth metal hypochlorite with a stabilizer in an alkali solution; (b) preparing a bromide ion source; and (c) adding the bromide ion source prepared in step (b) into the stabilized alkali or alkaline earth metal hypochlorite prepared in step (a). Also, a method of controlling the growth of microorganisms using a biocide prepared by the method of the present invention is disclosed.

Antibacterial compositions effective against both gram positive and gram negative vegetative bacteria plus harmful gram positive sporeforming bacteria include propionibacterial metabolites in combination with two or more of the following: a lantibiotic; a lytic enzyme; and an organic acid or its salt. Methods of use are provided, as well as food products treated with these antibacterial compositions.

Disclosed is a pyrazole amide compound as represented by general formula I, wherein, R1 is selected from hydrogen, C1-C4 alkyl, C2-C6 alkenyl, and C1-C6 alkyl; and R2 and R3 can be the same or different, and are respectively and independently selected from the C1-C6 alkyl. The general formula I compound has an excellent bactericidal activity, and can be used to prevent and control fungal diseases.

Biocidal compositions comprises an effective amount of a biocidal agent such as a quaternary ammonium compound or a blend of quaternary ammonium compounds and an effective amount of a cellular membrane disruptor. The synergy index of the biocidal agent and the cellular membrane disruptor is less than 1. The biocidal compositions can further comprise an effective amount of a chemical stabilizer and other optional components such as a nonionic surfactant. Methods for making and utilizing such biocidal compositions are also disclosed.

Polypeptides modified by fatty acid conjugation and methods of using such modified polypeptides in treating bacterial infections, including the treatment of antibiotic resistant bacterial infections, are disclosed.

The invention relates to a preparation method of an antibiotic medical dressing, and concretely relates to a preparation method of a nanosilver-carried calcium alginate antibiotic medical dressing. The problems of bad antibiotic performance, bad wettability, weak permeability and weak mechanical properties of present chitosan base medical dressings are solved in the invention. The preparation method comprises the following steps: carrying out chemical reduction of a silver nitrate solution by using sodium alginate as a stabilizing agent and a dispersant and sodium borohydride as a reducing agent to prepare a nanosilver sol, adding sodium alginate into the nanosilver sol, dumping the sodium alginate solution mixed with nanosilver particles into a culture dish to form a film, and crosslinking the sodium alginate film carried with nanosilver ions by using calcium chloride to obtain the calcium alginate dressing carried with the nanosilver ions. The antibiotic medical dressing has the advantages of rapid and efficient control of severe hemorrhage, antibiotic performance, good moisture absorption performance, good water steam transmittance, good biocompatibility, biodegradability, wound healing promotion capability, low price, simple operation, and suitableness for the scale production.

This invention discloses a wood preservative composition for the supplemental or remedial treatment of in-service poles, posts, piling, cross ties and other wooden structures. The wood preservative composition comprises copper 8-hydroxyquinolate (oxine copper) in combination with a boron compound or a fluoride compound.

A disinfectant able to increase the bactericiding activity of hydrogen peroxide is prepared from the aqueous solution of hydrogen peroxide, the activating agent chosen from the complex of metallic ion (Fe, Cu, Ag or Mg), the anhydride of acetic acid, propionic acid, butanedioic acid, etc and the stabilizer chosen from organic acid and inorganic acid through proportional mixing, and controlling pH=0.5-4 and temp to be lower than 100 deg.C. Its advantages are high bactericiding power, broad spectrum and high stability.

The invention discloses a manganese dioxide nanorod silver-loaded catalyst which consists of a manganese dioxide nanorod carrier and an active substance silver, wherein the mass of the silver accounts for 1-6wt% of the mass of the catalyst, and the mass of the manganese dioxide nanorod carrier accounts for 94-99wt% of the mass of the catalyst. According to the invention, the manganese dioxide nanorod silver-loaded catalysts of different crystal forms are applied to room-temperature catalytic sterilization for the first time; the manganese dioxide nanorod silver-loaded catalysts of different crystal forms have different sterilization properties and can suppress and kill various germs such as escherichia coli and staphylococcus aureus.

The invention discloses a nano-fiber anti-microbial fruit-vegetable preservative film with a porous structure, and a preparation method and application. According to the invention, myoporum bontioides leaves are grinded into powder and treated by supercritical extraction, so that a myoporum bontioides extract is obtained; a water solution containing TWEEN-80 is added into the myoporum bontioides extract, and the mixture is filtered, so that a myoporum bontioides supercritical extract solution is obtained; the myoporum bontioides supercritical extract solution, a polyvinyl alcohol solution, a chitosan derivative solution and a nano-titania solution are mixed, so that a mixed spinning solution is obtained; and the mixed spinning solution is treated by spinning of a static spinning machine, so that the nano-fiber anti-microbial fruit-vegetable preservative film with the porous structure is obtained. The preservative film has the advantages of a large specific area, a high porosity, high finger uniformity, good mechanical properties and the like, also has performance such as a good moisture permeable and gas permeable property and a good moldproof and anti-microbial property, and has high application potential in the food packaging field.

A system for a fast-rate preparation just before use of organic peroxyacids, in a hydroalcoholic environment, by mixing at temperatures lower than 40° C., preferably lower than 25° C., a first reactant and a second reactant, kept separate from each other during storage, to obtain an activated solution, the first reactant is in the solid or liquid state at a temperature from 5 to 45° C. and includes at least one acyl donating group, and the second reactant is in the solid state, at least in the temperature range from 5° C. and 40° C., and comprises a peroxide anion source in a concentration such as to provide at least 10-fold molar excess of peroxide with respect to the stoichiometric amount of the acyl-donor, a biocidal agent including at least one C₁–C₁₈ linear or branched aliphatic and/or aromatic alcohol, and a stabilizing buffer component suitable for keeping the second reactant at a desired pH value.

The invention relates to disinfectants, and particularly relates to a composite potassium hydrogen persulfate disinfectant and a preparation method thereof. The disinfectant is mainly prepared from the following components in percentage by weight: 20-65 percent of potassium hydrogen persulfate, 1-10 percent of sodium chloride enclosure, 5-30 percent of acid agent, 0-15 percent of effervescent, 1-10 percent of alkyl glycoside, 0-5 percent of a lubricating agent, 1-20 percent of metal chelating agent and 1-20 percent of a caking inhibitor. According to the composite hydrogen persulfate disinfectant and the preparation method thereof, the disinfectant contains the sodium chloride enclosure having oxidation resistance to avoid the reaction generated by contact of sodium chloride and other ingredients and achieve stronger stability, and does not contain alkyl glycoside to achieve the sterilizing activity higher than that of composite potassium hydrogen persulfate disinfectant without alkyl glycoside.

The invention relates to a multifunction disinfection sterilization detergent combination and the making method. It adopts quaternary ammonium salt, biguanide species, chelating agent, chlorine-hydroxyl diphenyl ether, fatty alcohol compound, organic acid compound, and nonionic reaction compound to make disinfection sterilization detergent. It is non-toxic and without side effect. So it can be widely used in various industries.

The invention discloses a small molecule peptide with antibacterial antiviral activity and an active modifier of the small molecule peptide. An amino acid sequence of the small molecule peptide is formed by 3-7 amino acids; a general formula of the amino acid sequence is X[0-3](R/K/O/D[ab])X[0-1]W[1-2](R/K/O/D[ab])[0-1]X[0-1], wherein X is one of the amino acids R, K, W and I; X[0-3] is any 0-3 of R, K, W and I; X[0-1] is any 0-1 of R, K, W and I; W[1-2] represents one or two Ws; (R/K/O/D[ab])[0-1] represents zero or one amino acid R or K or O or Dab; D[ab] is a 2,4-diamido-butyric acid. The experiment proves that the small molecule peptide or the active modifier thereof disclosed by the invention has good antibacterial antiviral effects, and has important application value in preparation of a drug, a sanitizer, a detergent, a corrosion remover or a packaging material for removing bacteria, fungi or viruses.

Belonging to the technical field of disinfection, the invention discloses a skin disinfection gel to solve the disadvantages of existing disinfection technologies, especially preoperative disinfection technologies. The skin disinfection gel is composed of the following active components by mass: 1.5%-6% of chitosan, 1.5-10% of chitosan oligosaccharide, 2%-8% of baicalin, 0.5%-2% of chlorhexidine, 0.5%-1.5% of sodium alginate, 2%-5% of agarose, and 1.5%-5% of a mint extract. And the disinfection effect is good. The disinfection gel disclosed in the invention can be used for hand disinfection or skin disinfection in sanitary disinfection or preoperative disinfection, and with excellent disinfection effects and lasting function, it has very good application prospects and economic benefits.

The invention belongs to agricultural fungicides, particularly discloses a pyridyloxy phenoxyalkanoic acids compound and application thereof. The structure of the compound is shown as the general formula (I), and the definition of each group in the formula is shown in specifications. The compound has excellent bactericidal activity and can be used for preventing and controlling germs on crop plants.

The invention discloses an antibacterial hydrogel dressing containing imidazolium bromide and a preparation method and application of the antibacterial hydrogel dressing. Antibacterial components, acrylamide and an initiator are composited to form a linear polymer; then the linear polymer is evenly dispersed into a gel carrier system with good biocompatibility; and through heating at the appropriate temperature and the repeated freezing-unfreezing process, the antibacterial hydrogel dressing containing the imidazolium bromide is prepared. The antibacterial hydrogel dressing has a unique three-dimensional network structure with the large water content, the antibacterial effective components and matrix macromolecules can be tightly combined together through chemical bonds, and the situationthat due to component losing, pollution to the surrounding environment is caused, or harm to body health is caused is avoided; and the hydrogel dressing has the good biocompatibility, antibacterial property, mechanical property and environmental friendliness, and will have the very wide application prospects in the field of biological dressings and medical dressings.

The present invention provides a membrane-electrode assembly, an electrolyte tank using the same, an electrolyte water injector and a disinfecting method. The membrane-electrode assembly comprises: at least one rod-form or tubular electrode; a tubular diaphragm disposed around the periphery of the electrode; and a wire-form counter electrode disposed around the periphery of the diaphragm, the diaphragm being fixed to the rod-form or tubular electrode with the wire-form counter electrode to thereby form an electrode chamber having a gas/liquid passage between the diaphragm and the rod-form or tubular electrode.

The invention discloses a preparation method of guanidine polymer fungicides. The preparation method includes that mass polymerization is adopted, and polymerization reaction is divided into two stages: prepolymerization and condensation; guanidine salt and endamine-based polymers are placed in a reaction kettle to be evenly mixed; the mass ratio of the guanidine salt to the endamine-based polymers is 1:10-1:1; under nitrogen protection, temperature is raised to 70-100DEG C for refluxing reaction in stirring, and guanidyl containing low polymers are obtained; polyamine small molecules are added to the reaction kettle to be evenly mixed; the mass ratio of the polyamine small molecules to the guanidine salt is 1:4-2:1; under nitrogen protection, temperature is raised to 120-200DEG C for refluxing reaction in stirring, and the guanidine polymers are obtained. The preparation method is simple in process and easy to implement and high in yield; the guanidine polymers contain a great deal of reactive amine on the basis of retaining fungicidal-group guanidyl, grafting to the surface of the product in the subsequent steps is facilitated, and the fungicides are good in practicability and application prospect.

The present invention relates to wood preservative compositions comprising an effective amount of a pyrethroid compound in combination with an isothiazolone compound, methods and processes for preserving wood using the wood preservative compositions of the invention, and wood comprising the wood preservative compositions of the invention.

The invention discloses an air filter type bacterial cellulose mask and a production method thereof. The mask is made of dried bacterial cellulose which is used as a mask frame material. The preparation method comprises the following steps: selecting acetobacter xylinum as a type strain, and culturing the acetobacter xylinum to obtain a bacterial cellulose membrane; and after soaking the membrane in acid liquor and alkali liquor, washing the soaked membrane till the rate of impurities is less than 0.5 percent, soaking the membrane in nano-silver solution, then drying the membrane by adopting a freeze drying mode, and obtaining the air filter type bacterial cellulose mask through compound preparation. The preparation process is simple, the filter performance of the mask can be effectively improved by using the bacterial cellulose as a material, and the bactericidal and antitoxic capacities of the mask are enhanced by soaking in the nano-silver solution; and the mask has the characteristics of low production cost, strong adsorption capacity, high bactericidal activity, long durative bactericidal time and the like, and can effectively reduce resource consumption and protect ecological environment.