505 results about "Antimicrobial effect" patented technology

The present invention relates to compositions comprising quaternary ammonium compounds and essential oils or individual constituents thereof which exhibit enhanced antimicrobial effects. Such combinations may be comprised in lotions, gels, creams, soaps, etc. for application to skin or mucous membranes. The invention is based, at least in part, on the observation that synergistic antimicrobial effects are achieved with combinations of essential oils or individual constituents thereof and low concentrations of quaternary ammonium compounds.

The present invention discloses a device and a method for reducing the risk of hospital-acquired infections, nocosomial infections, originating from the insertion of the device and / or use of the device in the body of a human or animal. The invention in particular relates to a device releasing at least one low molecular antimicrobial compound permeating the device thereby exerting its antimicrobial effect also on the outside of the device.

The invention relates to a composite plant source pesticide, which is characterized by including a mother liquid and an additive. The mother liquor comprises the following raw materials by weight: 35% of a Sophora flavescens extract, 35% of a resveratrol extract, 10% of a radix stemonae extract, 10% of a Melia azedarach extract, 5% of a Chinese azalea flower extract and 5% of a folium artemisiae argyi extract. A preparation method provided by the invention comprises the steps of: weighing the Sophora flavescens, resveratrol, radix stemonae, tobacco, Melia azedarach and folium artemisiae argyi according to the proportion; conducting screening, boiling extraction and purification to prepare an extract containing active ingredients of each component; and then mixing the mother liquor and the additive to obtain the product. Through various tests, the product has no adverse excitant smell, no drug residue, no damage to human, livestock, agricultural products, air and soil, has insecticidal and antimicrobial effects, and is suitable for usage in field, greenhouse, nursery, golf course, tea garden and forestry greening.

Disclosed herein are antimicrobial compositions comprising mixtures of botanical extracts, synthetic antimicrobial agents and essential oils which do not rely solely upon alcohol to produce their antimicrobial effects.

The present invention provides a method for preparing a nano silver-carrying titanium dioxide antiseptic. The aqueous ammonia solution and silver nitrate solution are dropped into the titanium sulfate solution simultaneously with continuous stirring. The final reaction pH is controlled by ammonia water. The titanium and silver are leaded to coprecipitate. The solution is filtered and washed after maturing. Afterwards the powder of nano silver-carrying titanium dioxide antiseptic is prepared by drying and calcining. The titanic acid or metatitanic can also be taken as precursor. The slurry containing 15-25% of recursor is added with silver nitrate solution with a concentration of 20-30gL<-1>, and the phosphoric acid, sulfuric acid or hydrochloric acid is added with a concentration of 10-15mgL<-1>. The solution is reacted, filtered and washed under the temperature of 50-60 DEG C. The solid object is dried, crushed, calcined and cooled, and the power of nano silver-carrying titanium dioxide antiseptic is obtained. The invention uses generating an indissoluble silver salt with a preparing technique of titanium dioxide to obtain the sustained-releasing of silver and color changing prevention. Furthermore the complex of the electron pair and the cavity is avoided. The photocatalysis antimicrobial effect of titanium dioxide is reinforced. The color, luster, granularity and dispersibility of the product can be well controlled.

The present invention relates to compositions comprising quaternary ammonium compounds and essential oils or individual constituents thereof which exhibit enhanced antimicrobial effects. Such combinations may be comprised in lotions, gels, creams, soaps, etc. for application to skin or mucous membranes. The invention is based, at least in part, on the observation that synergistic antimicrobial effects are achieved with combinations of essential oils or individual constituents thereof and low concentrations of quaternary ammonium compounds.

Compositions comprising silver dihydrogen citrate in combination with a second antimicrobial compound are provided. The second antimicrobial compound may be quaternary ammonia, an oxidizer or a halogen species, such as chlorine, bromine or iodine. Methods of using the antimicrobial composition provide superior antimicrobial effects.

An antimicrobial agent includes silver-chloro complex salts and chloride, and further oxidizing agents such as sodium hypochlorite or sodium chlorite. As a result, it is possible to provide the antimicrobial agent having immediate and residual disinfecting and antimicrobial effects on bacteria and molds of a wide variety of species and capable of demonstrating instantaneous deodorizing effect. The antimicrobial agent includes the silver-chloro complex salts and chloride, and further a compound, for example, such as alcohols or surfactants, which has compatibility with a solvent such as water which dissolves the chloride. As a result, it is possible to provide the antimicrobial agent which can be used conveniently at the stored concentration, and which has immediate effect and cleansing ability without causing rust or deposition of salts in use. Further, the antimicrobial agent includes the silver-chloro complex salts, and chloride, for example, such as polyaluminium chloride or benzalkonium chloride, which has at least (I) a property capable of existing as a supersaturated aqueous solution in the presence of a crystal nucleus at least at room temperature for 24 hours or longer and (II) a property capable of being decomposed when dissolved in water.

A composition for improving the flavor and juiciness of marinated meats and inhibiting growth of pathogenic and spoilage microorganisms and a process for making the composition are described. Lemon juice and vinegar are neutralized, concentrated and blended with non-neutralized lemon juice and non-neutralized vinegar in appropriate proportions to achieve the desired water binding and antimicrobial effects.

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.

Disclosed herein are antimicrobial compositions and methods of producing an antimicrobial effect in which a citrus extract such as Biosecur® is used in combination with benzyl alcohol and one or more additional agent selected from the group consisting of lauroyl arginate / glyceryl laurate and essential oils or constituents thereof such as galangal oil, thyme oil, thymol, cinnamon leaf oil, cinnamon bark oil, lemongrass oil, orange oil, pine oil, cedarwood oil, curry leaf oil, and rosemary oil. These compositions may be used as natural preservatives for personal care products, foods, beverages, and as topical or surface disinfectants.

The invention provides a compound antimicrobial agent containing an inorganic antimicrobial agent and an organic antimicrobial agent, wherein the inorganic antimicrobial agent is metal salt and / or metallic oxides with antimicrobial activity; the organic antimicrobial agent is a composition the formation of which is shown in an above formula (I) and / or formula (II) and is one or several of pyridines, wherein R1 and R2 showed in the formula (I) and the formula (II) are alkyls with the number of hydrogen atoms or carbon atoms from 1 to 8. The invention also provides an antimicrobial coating composition containing the compound antimicrobial agent and antimicrobial coating materials using the antimicrobial coating composition. The compound antimicrobial agent is prepared by a very simple method and can achieve the very favorable antimicrobial effect by only simply mixing the inorganic antimicrobial agent and the organic antimicrobial agent of the compound antimicrobial agent.

The present invention provides a yarn with antimicrobial effects. The antimicrobial antifungal effect of the yarn is derived from nanosilver particles (diameter between 1 and 100 nm) which are adhered to the yarn. The yarn contains fibers which are made of cotton, linen, silk, wool, leather, blending fabric, synthetic fiber, or any combination thereof. The yarn can be used to make cloth to be used particularly for treating patients with burns or wound. The cloth made from the antimicrobial yarn can be further used to make clothes such as underwears, socks, shoe cushions, shoe linings, bed sheets, pillow cases, towels, women hygiene products, laboratory coats, and medical robes. The present invention also provides a method for making the antimicrobial yarn.

An internal lining of several layers having anti-microbial effect is described for an item of equipment suitable for at least temporarily covering body parts; in particular, the layers include at least one layer made from a woven fabric and / or knitted and / or non-woven fabric with an anti-microbial effect wherein the fabric contains a metal, which metal is integrated in a filament, a fiber and / or a spunbonded fiber or spunbonded yarn; and at least one other layer of a semi-permeable membrane made from polytetrafluoroethylene (PTFE), and / or a polymeric laminate. The method of production of the multiple layered internal lining with an antimicrobial effect is also disclosed.

The present invention relates to woven or nonwoven fabric material having antimicrobial activity, and to its uses ranging from wound dressing, facial masks, surgical drapes and surgical clothing, to filter materials and similar applications where the antimicrobial effects are employed, as well as to a process for the preparation of the woven or nonwoven fabric material.

The invention discloses a Paenibacillus kribbensis, and a preparation method and an application thereof. The Paenibacillus kribbensis has a bacterial code name of TRCC82001, is preserved in China General Microbiological Culture Collection Center, and has a preservation number of CGMCCNo.7996. The above bacterial strain has the advantages of good production property, good metabolite antimicrobial effect, and strong activity against rice blast and sheath blight, and a solution obtained after diluting a broth subjected to antibiotic treatment to 100 times has an inhibition effect of above 80% on the rice blast and sheath blight. The bacterial strain and its metabolites have a broad antimicrobial spectrum, can be used for preparing biocontrol preparations for the broad spectrum activity inhibition of pathogenic fungi to control the fungal diseases of plants.

The present application defines an antimicrobial composition comprising (a) at least two antimicrobial agents having different antimicrobial mechanisms of action and being present in amounts that together provide a synergistic antimicrobial effect or (b) an antimicrobial agent and a surface modifying agent, an antimicrobial masterbatch comprising antimicrobial composition (a) or (b) and a polymer carrier, an antimicrobial fibre composition comprising the antimicrobial masterbatch and a fibre substrate, an antimicrobial fibre comprising a fibre body or a fibre surface having the antimicrobial fibre composition, and a process for producing antimicrobial fibres.

The invention provides a natural polysaccharide / nano-TiO2 composite light-sensitive antimicrobial hydrogel dressing which is composed of a backing layer, a hydrogel dressing layer and a strippable layer. A synthesis method of the natural polysaccharide / nano-TiO2 composite light-sensitive antimicrobial hydrogel dressing comprises performing radiation crosslinking on raw materials, namely 10-40% of natural polysaccharide, 0.1-10% of nano-TiO2, 0.1%-5% of radiation sensitizer, 0.1%-3% of pH regulator, 0.1%-3% of surfactant and 60%-95% of water, by use of an electron beam or gamma ray by a radiation dose of 10-150kGy and at a dose rate of 10-80kGy / pass. The natural polysaccharide / nano-TiO2 composite light-sensitive antimicrobial hydrogel dressing is sheared, bagged and sterilized by radiation, and then stored for a long time. The natural polysaccharide / nano-TiO2 composite light-sensitive antimicrobial hydrogel dressing has the advantages that the maximization and optimization of the properties of the composite hydrogel, light-sensitive and antimicrobial properties are united organically, and the multiple-element composite synergic antimicrobial effect of the nano-TiO2-natural polysaccharide hydrogel is also realized; meanwhile, the composite hydrogel dressing has the characteristics of air permeability, no bonding with tissues, good flexibility and the like, and thus is suitable for protecting and treating various wounds.

This invention relates to methods and compositions for materials having a non-leaching coating that has antimicrobial properties. The coating is applied to substrates such as gauze-type wound dressings. Covalent, non-leaching, non-hydrolyzable bonds are formed between the substrate and the polymer molecules that form the coating. A high concentration of anti-microbial groups on multi-length polymer chains and relatively long average chain lengths, contribute to an absorbent or superabsorbent surface with a high level antimicrobial effect.

The present invention provides copper-based antimicrobial fiber and a preparation method thereof, a cross-section of the copper-based antimicrobial fiber has a skin-core structure, a skin layer comprises an antimicrobial agent and carrier resin, a core layer comprises a fiber-forming polymer, and the preparation method of the copper-based antimicrobial fiber comprises the following steps: mixing evenly carrier resin powder and antimicrobial masterbatch ingredients of copper-based antimicrobial agent powder to obtain mixed powder; adding the mixed powder into a twin-screw extruder for extruding to obtain antimicrobial masterbatch; compounding and spinning the antimicrobial masterbatch as the skin layer and the fiber-forming polymer as the core layer to obtain the copper-based antimicrobial fiber. The beneficial effects are as follows: the copper-based antimicrobial fiber produced by the method has good spinnability, cross-sectional shape uniformity, long spinning pack replacement cycle, good antimicrobial effect and good durability, and has good antimicrobial effect especially on fungi.

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.

Disclosed herein are antimicrobial compositions comprising mixtures of botanical extracts, synthetic antimicrobial agents and essential oils which do not rely solely upon alcohol to produce their antimicrobial effects.

A composition includes at least one antimicrobial agent; a possible solvent system with either hydrophobic or hydrophilic nature, selected according to the target of usage; as well as possible surface active agent. The compound mixture is obtained by pulverizing wood or plant material and / or by extracting the possibly pulverized wood or plant material, so that the compound mixture contains at least two different polyphenolic compounds selected from the following group: lignans, stilbenes, juvabiones and flavonoids; the compound mixture further containing oligomers of the polyphenolic compounds, so that the compound mixture preferably has the following properties: the compound mixture has an antimicrobial effect in the composition; the cytotoxicity of the polyphenols contained in the compound mixture is at least 10 times lower with respect to BHT; the compound mixture does not irritate the skin in a so-called single patch test with contents of 0.1 wt %.

An improved method is provided for inactivating microorganisms in food products by introducing an edible phenolic compound in a food product and subjecting the resulting food product containing phenolic compound to high pressure conditions. This particular combination of physical and chemical treatments on the food products inactivates undesirable microorganisms in a food product to a significantly greater degree possible than achieved with any one of the treatments by itself, and the combined antimicrobial effect of these different types of treatments is synergistically greater than any additive effect that might be expected from the individual treatments.

A nano-silver footwear orthotic includes at least two removable inserts. The footwear orthotic and / or the at least two removable inserts are composed of a nano-silver copolymer being copolymer with silver nano-particles therein. In one aspect, the copolymer is a thermoplastic elastomer. The nano-silver copolymer has anti-microbial effects and ensures biocompatibility with known undesirable microorganisms. Corresponding manufacturing processes prepare the silver nano-particles with a silver nitrate solution and a sodium borohydride solution and add the silver nano-particles to a master batch and a base material to form the nano-silver copolymer in a mold cavity. The mold cavity may be constructed to form the nano-silver footwear orthotic and / or a removable insert therein. Alternatively, the nano-silver copolymer may be formed within the nano-silver footwear orthotic itself to form a removable insert. Tests showing the content of silver nano-particles in a silver—copolymer mixture and corresponding antimicrobial effect tests show antimicrobial effects against bacteria known to cause foot odor and itchiness.

The invention relates to Pseudomonas chlororaphis with wide-spectrum antimicrobial activity and application of Pseudomonas chlororaphis to prevention and treatment of diseases attacking fruit trees and field crops, belonging to the field of biotechnology. The Pseudomonas chlororaphis with wide-spectrum antimicrobial activity is classified and named as Pseudomonas chlororaphis YTBTa14, with an accession number of CCTCC No. M2016099, and the 16SrDNA sequence of the Pseudomonas chlororaphis is as shown in a sequence table in the specification. The thallus and fermentation broth of the Pseudomonas chlororaphis with wide-spectrum antimicrobial activity in the invention both have good wide-spectrum antimicrobial activity to fungal diseases attacking fruit trees, have long-lasting and stable antimicrobial effect, show great potential in development into novel high-efficiency wide-spectrum bio-control fungicides, and provide a novel approach for application of microbes to biological control.