128results about How to "Good broad-spectrum antibacterial effect" patented technology

The invention provides a non-woven composite material for a filter respirator.The non-woven composite material comprises a first non-woven fabric layer, a second non-woven fabric layer and a third non-woven fabric layer sequentially from top to bottom, wherein a first antibacterial layer and a polytetrafluoroethylene micro-porous membrane layer are sequentially arranged between the first non-woven fabric layer and the second non-woven fabric layer, a second antibacterial layer and a detachable filter layer are sequentially arranged between the second non-woven fabric layer and the third non-woven fabric layer, the first antibacterial layer is a porous nano titanium dioxide silver-loaded antibacterial agent coating with the particle size of l5nm-50 nm, and the second antibacterial layer is a biological polypeptide antibacterial agent layer.The non-woven composite material for the filter respirator can effectively filter very fine particles and meanwhile has high bacterium and virus resistance performance and good air permeability and adsorbability.

The invention discloses a preparation method of a composite functional fresh-keeping paper based material with enhanced slow release function. The preparation method comprises following steps: 1, beta-cyclodextrin and essential oil are weighed to prepare essential oil microcapsules; 2, the essential oil microcapsules and a mesoporous molecular sieve are mixed, water is added, and high speed oscillation treatment is carried out so as to obtain a molecular sieve loaded with the essential oil microcapsules; 4, the molecular sieve loaded with the essential oil microcapsules, a starch solution, a chitosan solution, and an inorganic salt solution are mixed and stirred at a ratio, deionized water is added to adjust the solid content to be 5 to 10% so as to obtain a coating solution; 5, the surface of food package body paper is uniformly coated with the coating solution; and 6, the coated paper is dried fully at room temperature so as to obtain the functional fresh-keeping paper based material. The fresh-keeping paper prepared using the above preparation method is capable of prolonging the storage period of packaged products, and the service life of the fresh-keeping paper can be prolongedat the same time.

The present invention provides an antibacterial adhesive composition, an antibacterial non-woven fabric, a cleaning product and a manufacturing method of the antibacterial non-woven fabric. The composition includes 10-40 wt% of a hydrophilic adhesive and 1-10% of tea polyphenol particles and water, calculated by the total weight of the composition. The invention provides a green environment-friendly antibacterial non-woven product with excellent broad-spectrum antibacterial and long-acting antibacterial properties and good durability.

The invention discloses a composition with a function of repairing skin and a gel agent of the composition. The composition with the function of repairing skin comprises the following components in percentage by weight: 33%-83% of chitosan derivative and 17%-67% of mycose. The composition with the function of repairing skin has broad-spectrum antibacterial property being stronger than mono-component, is high in moisture retention, capable of protecting the wound surface, facilitating growth of bacteria for regulating micro-ecological balance of the human body, facilitating the growth of beneficial bacteria, accelerating the wound healing and is low in cost.

The invention relates to a preparation method and application for natural latex packing. The natural latex packing is prepared by taking chitin and modified starch as main raw materials and by combining the technologies of freezing-thawing, ultrasound and the like with a chemical modifying method, and has double functions of reinforcing and resisting bacteria. The preparation method for the natural latex packing provided by the invention is simple in process, wide in raw material source and low in cost; the prepared natural latex packing is safe and environment-friendly, and can be used for partially replacing carbon black, white carbon black, raw rubber and the like in rubber industry; the pollution to the environment is reduced, and the production cost of a rubber product is reduced; moreover, rubber composite packing is endowed with a certain antibacterial property, so that the antibacterial effect of the rubber product is improved, the rubber quality is improved, and the application range of a rubber impregnated product is enlarged.

The invention provides an antibacterial and breathable home textile fabric and a preparation method thereof. The home textile fabric comprises an antibacterial surface layer, an antibacterial particleintermediate layer, a protective intermediate layer and an antibacterial bottom layer arranged from top to bottom in sequence, wherein the antibacterial surface layer and the antibacterial bottom layer are braided from antibacterial polyester fibers and cotton fibers; the protective intermediate layer is braided from milk protein fibers and cotton fibers; the antibacterial particle intermediate layer comprises a vertically arranged aramid fiber support and antibacterial nano-silver particles; the antibacterial particle intermediate layer is partitioned into multiple cavities by the aramid fiber support; the antibacterial nano-silver particles are distributed in the cavities; and the antibacterial nano-silver particles are prepared by soaking polyamide filaments with antibacterial nano-silver liquid and cutting. According to the antibacterial and breathable home textile fabric and the preparation method thereof provided by the invention, the cost for preparing the antibacterial and breathable fabric is reduced, the antibacterial and breathable properties are improved, and direct contact between the antibacterial nano-silver particles and human skin can be avoided.

The invention discloses a preparation method of a cobalt-doped zinc oxide/molybdenum disulfide nano composite antibacterial agent. The advantages of large specific surface area, high surface adsorption capacity and the like of molybdenum disulfide nanosheets are utilized; the preparation method comprises the steps: adsorbing bacteria to the surface of the molybdenum disulfide nanosheets, then cooperatively loading cobalt (Co) doped zinc oxide (ZnO) on the surface and between layers of the molybdenum disulfide nanosheets to play an efficient antibacterial role to kill the bacteria, and thus finally preparing the novel nano composite antibacterial agent with good biocompatibility and high antibacterial activity. The cobalt-doped ZnO quantum dot/molybdenum disulfide nano composite antibacterial agent prepared by the method has the advantages of good biocompatibility, strong broad-spectrum antibacterial effect and the like, and the minimum inhibitory concentration on escherichia coli can reach 0.25 mg/mL.

The invention relates to a bacteriostatic warmth retention composite functional screen cloth and a manufacturing method thereof. The air permeation volume is not less than 1500mm.s<-1>, the moisture permeation volume is not less than 500g.m<-2>.d<-1>, and the bursting strength is not less than 2000N; the bacteriostatic rate of the baceriostatic warmth retention composite functional screen cloth for yellow glucose coccus and colibacillus is more than or equal to 90 percent, the heat conduction coefficient at the temperature of 20 DEG C is not more than 50W.m<-2>.k<-1>; the bacteriostatic warmth retention composite functional screen cloth is produced by adopting an imported German KARL MAYER RD6DPLM-type double-needle bar warp knitting machine and is obtained in a warping step, a weaving step and an arranging step. The composite functional screen cloth with the bacteriostatic and warmth retention performance has wide application prospect in the fields such as shoe materials, mattresses and the like.

The invention discloses a preparation method for a chain extender used for structurally antibacterial polyurethane. The preparation method comprises the following steps: subjecting fluoroquinolone to vinylation modification by using an acylation reaction; and then introducing a dihydroxyl group into vinylated fluoroquinolone molecules according to the principles of the Michael addition reaction so as to obtain the dihydroxyl chain extender with an antibacterial fluoroquinolone group in its side chain. The chain extender is applicable to synthesis of solvent type or waterborne polyurethane for preparation of structurally antibacterial polyurethane, endows a polyurethane product with lasting and long-acting antibacterial and mildew-resistant performance without influence the main chain structure of polyurethane, and has application prospects in the fields of leather/synthetic leather coatings, bio-medical instruments, etc.

The invention relates to screen cloth for the field of bags and suitcases and a processing method of the screen cloth. The screen cloth is characterized in that the air permeation volume of the screen cloth is not less than 1800mm.s<-1>, and the bursting strength is not less than 2000N; the bacteriostatic rate of the screen cloth for the yellow glucose coccus and colibacillus is not less than 90 percent, the water-resisting and oil-resisting grade is not less than 90. The screen cloth is simple in process and wide in application range.

The present invention provides an antibacterial peptide, and a pharmaceutical composition and applications thereof. The antibacterial peptide comprises any one of an antibacterial peptide 1, an antibacterial peptide 2 and an antibacterial peptide 3, the amino acid sequence of the antibacterial peptide 1 is represented by SEQ ID No: 1, the amino acid sequence of the antibacterial peptide 2 is represented by SEQ ID No: 2, and the amino acid sequence of the antibacterial peptide 3 is represented by SEQ ID No: 3. The three antibacterial peptides are formed by modifying natural antibacterial peptides PGLa-AM1 as the basis, and have the characteristics of stronger antibacterial effect and better performance. The inhibitory effect of the three antibacterial peptides on helicobacter pylori is stronger than that of PGLa-AM1, the broad-spectrum antibacterial effect of the antibacterial peptide 3 is the strongest, and the antibacterial peptide 3 has good pH responsiveness, so that the antibacterial peptide 3 is in better contact with helicobacter pylori and inhibits growth of helicobacter pylori. The three antibacterial peptides have advantages of strong antibacterial activity, strong biocompatibility and low cost, and are expected to be widely used.

The invention relates to the technical field of microorganisms, particularly to a bacillus amyloliquefaciens B6 and application thereof. The bacillus amyloliquefaciens B6 is preserved in CCTCC (china center for type culture collection), the preservation date is November 20, 2016, and the preservation No. is CCTCCM 2016621. The bacillus amyloliquefaciens B6 can inhibit 73 pathogenic bacteria of watermelons, is comparatively good in broad spectrum inhibition effect and high in endurance capacity and reproductive capacity, can be directly inoculated in a traditional planting site and still has a comparatively good effect even if no greenhouse is arranged.

The invention relates to a nanoparticle-embedded amyloid protein fiber filter membrane and a method used for pollutant degradation. A filter membrane with catalytic activity is prepared by utilization of amyloid protein fibers coating nanoparticles and used for catalysis degradation of pollutants. The method concretely comprises steps: a nanoparticle-amyloid protein fiber composite material is prepared; a composite filter membrane is prepared from the composite material; the composite filter membrane is applied in degradation of corresponding pollutants, and the membrane catalytic reaction conversion rate is adjusted through control of a flow velocity of a pollutant solution. When the catalytic reaction is compared with a catalytic reaction employing nanoparticles, the nanoparticles are embedded in the amyloid protein fibers, loss of the nanoparticles is prevented, the filter membrane can be used repeatedly after preparation film forming, and the economic cost is lowered. The composite filter membrane preparation and the method used for pollutant degradation is advantageous in that preparation conditions are mild and simple, the catalysts can be utilized repeatedly, and degradation operation is fast and convenient.

The invention discloses a Chinese medicinal herb-containing feed additive capable of preventing weaned pig multisystem failure syndrome and pig feed containing the Chinese medicinal herb-containing feed additive. The Chinese medicinal herb-containing feed additive comprises the following ingredients: root of hairy asiabell, bighead atractylodes rhizome, tuckahoe, Chinese yam, radix astragali, white hyacinth bean, coix seed, lotus seed, fructus amomi, dried tangerine or orange peel, parched medicated leaven, parched malt, parched hawthorn fruit, Platycodon grandiflorum, lily, radix stemonae, Polygonum multiflorum, herba epimedii, glossy privet fruit, herba ecliptae, Coptis chinensis, rhizoma picrorhizae, the fruit of Rangoon creeper and liquorice. The Chinese medicinal herb-containing feed additive is 1.5-2wt% of the pig feed, can improve immunity of the weaned pig, prevent weaned pig multisystem failure syndrome, and has the characteristics of cheap price, non-toxic effect and non-side effect.

The invention relates to a production method for recombinant holothurian lysozyme and the recombinant holothurian lysozyme produced by the method. The method comprises the following steps: collecting a holothurian lysozyme gene (SEQ ID NO.1) to a eukaryotic expression vector pPIC9K to construct recombinant plasmid, transforming the formed recombinant plasmid into Pichia pastoris SMD 1168, inducing the recombinant plasmid by methanol and expressing the recombinant plasmid to obtain the recombinant lysozyme after purification for cation resin chromatographic column. The method adopts genetically engineered vaccine strains to produce lysozyme, is suitable for large-scale culture and extraction separation, and has the advantages of simple processing technology, simple equipment requirement, short production period, lower cost and no environment pollution. The activity of the prepared recombinant holothurian lysozyme is increased by 30 percent compared with the lysozyme extracted from holothurian tissues; and compared with egg-white lysozyme, the recombinant holothurian lysozyme has far wider bacteriostatic spectrum range, and particularly has more remarkable bacteriostatic effect for Gram-negative bacteria which can not be acted by the egg-white lysozyme.

The invention relates to organic fertilizer, in particular to jonquil planting organic fertilizer .The invention further relates to a preparation method of the jonquil planting organic fertilizer .The jonquil planting organic fertilizer is prepared from, by mass, 30-50 parts of arenaceous soil, 13-19 parts of closterium powder, 10-15 parts of chicken manure, 10-15 parts of decumbent bugle herb, 7-15 parts of pomegranate peel, 10-20 parts of acalypha australis, 8-16 parts of a water-retaining agent, 9-18 parts of hedyotis diffusa residues, 7-15 parts of radix isatidis residues, 1-5 parts of urea, 2-6 parts of calcium superphosphate and 2-5 parts of multiple microorganisms .The jonquil planting organic fertilizer can be prepared and directly applied, the preparation process is simple, and the utilization rate is high.

The invention discloses a plant extract-based sterilization composition. The plant extract-based sterilization composition is prepared from the following components in percentage by weight: 1.0 to 3.0percent of grapefruit extract, 3.0 to 10.0 percent of cortex magnoliae officinalis extract, 3.0 to 8.0 percent of ginger root extract, 3.0 to 8.0 percent of pericarpium zanthoxyli extract and 71 to 90 percent of polyol. The plant extract-based sterilization composition is prominent in lasting antibacterial property; the plant extract-based sterilization composition is prepared from the grapefruitextract, the cortex magnoliae officinalis extract, the ginger root extract, the pericarpium zanthoxyli extract and the polyol, so that the plant extract-based sterilization composition is capable ofeffectively controlling plenty of bacteria and mould, which are difficult to control, in cosmetics, and the plant extract-based sterilization composition is gentle in property, has no irritation and no hotness and is very safe. The plant extract-based sterilization composition is capable of effectively killing the bacteria, the mould and saccharomycetes in the cosmetics, and the components of thecomposition are not included in an accepted preservative list specified by Cosmetic Safety Technological Specification, and can meet the requirement of a 'no preservative' concept of a product.

The invention discloses a composition and cosmetics having an acne-removing effect, aiming at providing a composition prepared from natural herbal ingredients for effectively solving the problems of acne skin by regulating sebum secretion, inhibiting bacteria, diminishing inflammation, astringing and soothing. The composition is prepared from youthwort extract, sappan wood extract, epilobium angustifolium extract and florentina root extract. The invention further discloses cosmetics containing the composition having the acne removing effect, including skin-protecting essence, skin-protecting cream and facial cleaning gel, and belongs to the technical field of cosmetics.

The invention discloses a preparation method of a nanomaterial for preventing decayed teeth and treating superficial caries, and relates to the fields of nano-biotechnologies and oral care technologies. The preparation method comprises the following steps: uniformly dispersing polydopamine particles in an aqueous solution system, adding an aqueous solution containing silver ions under a magnetic stirring condition, carrying out a reaction for a period of time, performing high-speed centrifuging, discarding the obtained supernatant, and washing the obtained reaction product with deionized water; and slowly adding an aqueous solution of molecules having the ability to recognize dental enamel to a high-speed stirred catalyst system solution, carrying out a reaction for a period of time, slowly adding the prepared antibacterial component-immobilized core aqueous solution to the obtained high-speed stirred solution system, carrying out a reaction for a period of time, performing high-speedcentrifugation, discarding the obtained supernatant, washing the obtained reaction product with deionized water to obtain the nanomaterial. The nanomaterial prepared by the preparation method is formed by the inner nanoparticle core having an induced mineralization effect, and an external containing the above broad-spectrum antibacterial component and the dental enamel recognition molecules.

The invention belongs to the technical field of traditional Chinese medicine or cosmetics. The invention discloses a preservative and a preparation method thereof. The preservative consists of the following components: Magnolia Bark Extract, Coptis Rhizoma Extract, Ascorbyl Glucoside, Solubilizer, 1, 2‑Hexanediol, deionized water. Research shows that the preservative obtained by the invention has high-efficiency antiseptic effect and low irritation, and is suitable for use in the field of cosmetics. The invention aims to use natural plant active ingredients to compound a low-toxicity, low-irritation, high-efficiency natural preservative, and apply it to the fields of cosmetics and the like.

The invention relates to mould proof antibiotic ultraviolet light film and the manufacturing method. It is gained from epichlorohydrin, acrylic acid, epoxy resin, para hydroxybenzene methyl ether, tetrabutylammonium bromide, triethanolmine, benzophenone, 3-propylene glycol-2 acrylate ester, 3-hydroxymethyl-3 propionic diluted acid fat, 2,2-dimethoxy-1,2-diphenyl hextone, silver zinc ion antiseptic, dispersant by certain ratio and according to certain process. It has great effect to public health and avoiding large area contagion.

The invention provides a preparation method of a medical non-woven fabric composite. The method specifically includes the following steps of firstly, weighing 30-50 parts by weight of adipic acid/polybutylene terephthalate, 20-30 parts by weight of polybutylene terephthalate and 30-40 parts by weight of polycarbonate to be sufficiently mixed to obtain a mixture A; secondly, blending the mixture in the first step with 1-4 parts by weight of antistatic agent and 0.5-2 parts by weight of antibacterial agent, and conducting extruding and granulating through a twin-screw extruder to obtain a blend; thirdly, conducting vacuum drying on the blend in the second step, conducting heating, fusing, extruding, stretching, cooling and self-adhering on the dried blend through a screw extruder to form a non-woven fabric; fourthly, spraying an anti-radiation layer on one side of the non-woven fabric obtained in the third step, and putting the fabric into a drying box to be dried and shaped. The prepared medical non-woven fabric composite has antibacterial performance, radiation prevention performance and antistatic performance and is mainly applied to preparing a medical mask.