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385results about How to "Good antibacterial effect" patented technology

Trichoderma harzianum composite bacteria culture and application of trichoderma harzianum composite bacteria culture in aspect of plant protection

The invention relates to a trichoderma harzianum composite bacteria culture and application of the same in the aspect of plant protection, and belongs to the technical field of biology. The strain of the trichoderma harzianum composite bacteria culture is preserved in the China General Microbiological Culture Collection Center (CGMCC), and classified and named as Trichoderma harzianum MDCGTH 18, with a preservation number of CGMCC NO.2965. The Trichoderma harzianum MDCGTH 18 composite bacteria culture utilizes antagonistic microbes for biological prevention and treatment, simultaneously has the functions of inducing the disease resistance of plants and increasing the yield, has obvious effect of controlling aspen root rot, apple root rot, citrus yellow shoot, watermelon fusarium wilt, tobacco bacterial wilt, wheat scab, full rot, root rot, banded sclerotial blight, cucumber powdery mildew, downy mildew, vegetable gray mold, fusarium wilt and various other epidemic diseases, can be independently taken as a biological control microbial inoculum for plant diseases, and can also be mixed with other biological antiseptics, plant antibiotics, plant growth regulators and the prior antiseptics to prepare various biological antiseptics for controlling different plant diseases.
Owner:刘和现

Super-hydrophobic coating with self-cleaning and antibacterial functions and preparation method thereof

The invention belongs to the technical field of preparation of super-hydrophobic coatings, and particularly relates to a super-hydrophobic coating with self-cleaning and antibacterial functions and apreparation method thereof. The preparation method comprises the steps of: preparing PVDF solid suspension A by adopting an organic solution of polyvinylidene fluoride and small-molecular-weight alcohol, then adding ZIF nanoparticles into the suspension A, then adding fluoride with low surface energy to obtain a super-hydrophobic coating solution, and painting a substrate with the super-hydrophobic coating solution so as to obtain the super-hydrophobic coating with the self-cleaning and antibacterial functions. The super-hydrophobic coating with the self-cleaning and antibacterial functions isprovided, has the advantages of a simple preparation process, mild reaction conditions and good thermal stability and chemical stability, and is applicable to a plurality of different substrates andlarge-scale production, and not only can a function of surface contaminants self cleaning be achieved through the super-hydrophobic coating, but also bacteria on the surface of the coating can be killed at the same time, so that the formation of biofilm is prevented, and the super-hydrophobic coating has great potential application values in the self-cleaning and antibacterial fields.
Owner:ZHENGZHOU UNIV

Nano silver-super absorbent polymer composite and radiation method production technology

The invention discloses a nano silver-super absorbent polymer composite serving as the main function material of physical hygiene articles, and the grain diameter is less than or equal to 100 meshes. Nano silver grain of which the grain diameter is less than or equal to 100 nm is compounded in three-dimensional network structure of which the edge length is less than or equal to 10 nanometers; the network does not affect exchange of internal medium and external medium, nano silver grains of which the content is not less than 50 ppm and better value is 170 ppm are evenly distributed in resin and have excellent sterilizing effect. The radiation method production technology of the composite is characterized in that cross-linking agent is added when preparing super absorbent polymer feed solution and the mixture is evenly stirred; then, silver nitrate and surfactant are added, wherein the density of silver nitrate is between 10-4 and10-1M and the density of surfactant is between 10 and 3-2 M; and at normal temperature, the mixture is irradiated by r-ray of Co-60 of which the dose rate is 10-200 Gy/min, and total irradiation dose is 1-15 KGy so as to obtain the nano silver-super absorbent polymer composite. The preparation method is the only one-step synthesis technology currently and is applied to industrial volume production.
Owner:安徽华晶新材料有限公司

Method for preparing medical antibacterial cotton gauze

The invention discloses a method for preparing medical antibacterial cotton gauze. The method comprises the following steps of: carrying out extrusion pretreatment on cotton gauze; carrying out carboxymethylation modification treatment on the cotton gauze after pretreatment; carrying out water washing comprising the step of washing with water for a plurality of times; carrying out antibacterial treatment comprising the steps of putting the cotton gauze after water washing into water with the bath ratio of 1:25, adding a compound antibacterial agent with the amount 5-8% of the cotton gauze weight and then increasing the temperature to about 40-48 DEG C, wherein the treating time is 2.5-3 h, and the compound antibacterial agent comprises nano titanium dioxide, modified chitosan, armoise oil and a tea leaf extract; carrying out water squeezing comprising the steps of squeezing water of the cotton gauze after antibacterial treatment to make the water content of the cotton gauze be 10-20% of the weight; and drying comprising the steps of putting the cotton gauze after water squeezing into a vacuum drying box and drying. The water absorbing property of the cotton gauze is improved, and moreover, the cotton gauze has a good antibacterial effect.
Owner:JIANGSU TIANZHANG HEALTH & MEDICAL NEW MATERIALS CO LTD

Halloysite Ag-carrying antibacterial agent and preparation method thereof

The invention provides a halloysite Ag-carrying antibacterial agent and a preparation method thereof. The preparation method comprises the following steps: (1) activating halloysite: adding the halloysite with the purity of not less than 80wt% to 1-5wt% of nitric acid solution, and stirring for activating at normal temperature, wherein, the solid-to-liquid ratio of a reaction system is 5-10% (mass percent); (2) drying: centrifugally dewatering and drying the activated halloysite to obtain the activated and dried halloysite; (3) loading: preparing 0.5-3wt% of silver nitrate solution, adjusting the pH value of the silver nitrate solution with dilute nitric acid to 5-6, adding the activated and dried halloysite, and stirring at the temperature of 40-60 DEG C for 0.5-2h, wherein, the solid-to-liquid ratio of a reaction system is 5-20% (mass percent); and (4) after reaction is ended, carrying out centrifugal filtration on the product, washing and drying the obtained filter cake to obtain the halloysite Ag-carrying antibacterial agent. The preparation method is simple and has low production cost and good loading effect; and the halloysite Ag-carrying antibacterial agent obtained by the preparation method has the advantages of good antibacterial effect, broad-spectrum antibacterial function, firm loading and good slow-releasing property of antibacterial silver ions, and good heat resistance.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN) +1

Antibacterial coating with zinc zeolite-based cerium doped nanometer titanium dioxide antimicrobial and preparation method thereof

InactiveCN102229766AGood antibacterial effectGood scrub resistanceAntifouling/underwater paintsPaints with biocidesAnatase titanium dioxideZeolite
The invention discloses an antibacterial coating with a zinc zeolite-based cerium doped nanometer titanium dioxide antimicrobial and a preparation method thereof. The coating of the invention boasts obvious antibacterial effect, and environmental protection as well as energy conservation. Formulations of the coating include proportioned styrene acrylic emulsion, anatase titanium dioxide, talcum powder, light calcium heavy calcium, kaolin, an antimicrobial and one or more accessories. The preparation method comprises the steps of: adding the one or more accessories like a dispersing agent, a wetting agent, an antifoaming agent, cellulose into water and stirring, then adding anatase titanium dioxide, talcum powder, light calcium, heavy calcium and 0.5%-1.5% of antimicrobial in order, slurrying the mixture, and decreasing the number of revolution to 800r/min and cooling the slurry when the fineness of the slurry reaches 50 micrometers, then adding hydrate cellulose, an antifoaming agent, a film-forming additive and emulsion as the slurry cools to a certain temperature, and finally adjusting the pH and the coating viscosity. The antibacterial coating of the invention is characterized by good washability and weatherability, simple technology, low cost, and stable product performance.
Owner:SHENYANG JIANZHU UNIVERSITY

Glass fiber air filter paper with antibacterial property and preparation method thereof

InactiveCN103276629AGood water solubilityGood antibacterial effectSynthetic cellulose/non-cellulose material pulp/paperFiltration separationSodium PyrithionePolyethylene terephthalate glycol
The invention discloses glass fiber air filter paper with an antibacterial property. The glass fiber air filter paper comprises alkali-free glass fibers of which the diameter is 0.1-0.5 micron, alkali-free glass fibers of which the diameter is 1.0-2.0 microns, alkali-free glass fibers of which the diameter is 5-7 microns, glass fiber filter paper manufactured from PET (polyethylene terephthalate) polyester fibers, and a pyrithione derivative antibacterial layer which is attached to the surface of the filter paper. The invention also discloses a method for preparing the glass fiber air filter paper, comprising the following steps of: (1) selecting raw materials according to a mixing ratio; (2) pulping and dispersing the raw materials to obtain a slurry; (3) diluting the slurry and adjusting the PH value; (4) removing residues from the slurry obtained in the step (3), and preparing wet paper by using a wet method forming; (5) dehydrating the wet paper obtained in the step (4); (6) passing the wet paper obtained in the step (5) through a gum solution of a pyrithione derivative; and (7) drying the wet paper obtained in the step (6). The glass fiber air filter paper is excellent in antibacterial and air filtration performances, and is wide in application field.
Owner:CHONGQING ZAISHENG TECH CORP

Preparation method for blended yarns of hemp cotton and antibacterial fibers

The invention discloses a preparation method for blended yarns of hemp cotton and antibacterial fibers. The preparation method comprises the following steps: (1) blending prepared hemp cotton blended fibers with the antibacterial fibers in proportion, obtaining roving through stranding and twisting, spinning raw roving after mixing and matching, and then scouring and bleaching the roving; (2) carrying out half-degumming on the roving; (3) carrying out bleaching and dechlorination; (4) before dyeing, performing biological enzyme pretreatment; (5) performing softening and drying; (6) after dyeing and after-treatment processes, spinning spun yarns; (7) carrying out radio frequency drying, picking, spooling and packing for the spun yarns and humidifying the health knitting yarns, thus obtaining the blended yarns of the hemp cotton and antibacterial fibers. The blended yarns of the hemp cotton and antibacterial fibers disclosed by the invention have the characteristics of being obvious and lasting in antibacterial effect, capable of killing or inhibiting breeding of pathogenic bacteria to protect body health, excellent in antibacterial and anti-mould effects, good in stability and elasticity, soft in hand feelings, less in residues and harmless to human bodies.
Owner:YIWU MASHANGSHENG KNIT GOODS CO LTD

Preparation method and use method of bacillus amyloliquefaciens Y-3 biological fresh-keeping agent

The invention discloses a novel strain Y-3 of bacillus amyloliquefaciens and a preparation method and use method of a bacillus amyloliquefaciens Y-3 biological fresh-keeping agent. The preparation method comprises S1, separating bacillus amyloliquefaciens Y-3, S2, activating antagonistic bacteria, S3, inoculating NB fermentation broth with the antagonistic bacteria and carrying out fermentation until the stress-resistant spore rate of 90% or more, S4, crushing bentonite until fineness of less than or equal to 44 microns and carrying out high temperature and high pressure sterilization, and S5,mixing the NB fermentation broth cultured by the bacillus amyloliquefaciens Y-3, bentonite, PEG8000, a detergent and sodium carboxymethylcellulose, carrying out freeze drying, and carrying out crushing until fineness of less than or equal to 44 microns so that biological fresh-keeping wettable powder is obtained. In use, the bacillus amyloliquefaciens Y-3 biological fresh-keeping agent is dilutedwith water and then is applied to picked tomatoes by spraying or soaking. The bacillus amyloliquefaciens Y-3 biological fresh-keeping agent is easy to use and can be conveniently transported transregionally and stored.
Owner:FARM PROD STORAGE & FRESHENING INST SHANXI ACADEMY OF AGRI SCI

Anatase titanium dioxide nano-material with exposed controllable high-activity crystal faces and preparation method and application thereof

ActiveCN106082321AEfficient visible light catalytic antibacterial performanceGood antibacterial effectBiocideMaterial nanotechnologyAnatase titanium dioxideSolvent
The invention relates to an anatase titanium dioxide nano-material with exposed controllable high-activity crystal faces and a preparation method and application thereof and belongs to the technical field of nano-materials. The ratio of the crystal face {001} to the crystal face {101} of the anatase titanium dioxide nano-material for exposing the controllable high-activity crystal faces is 1% or 10% or 35% or 50%, and the sizes both range from 50 nm to 70 nm. The preparation method of the anatase titanium dioxide nano-material with the exposed controllable high-activity crystal faces includes the steps that titanium tetrachloride serves as a titanium source, water serves as a reaction solvent, ammonium fluoride serves as a morphology control agent, and nanometer titania is prepared through a solvothermal method. The anatase titanium dioxide nano-material with the controllable {001} crystal face and the controllable {101} crytal face is prepared by adjusting the molar ratio, the reaction temperature and the reaction time of reaction raw materials. The titanium dioxide nano-material with the crystal face ratio and sizes can be used for inhibiting growth of bacteria, and has efficient visible light catalytic antibacterial performance.
Owner:CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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