597results about How to "Improve antibacterial" patented technology

The invention relates to a nakedflower beautyberry extract as well as a preparation method, a preparation and an application thereof. The nakedflower beautyberry extract is an extract which is extracted from nakedflower beautyberry leaves and contains a nakedflower beautyberry total flavonoid compound and a tannide class compound. The extract is obtained by the steps of extracting the nakedflower beautyberry leaves by water, diluted alcohol or diluted ketone and carrying out macroporous adsorptive resin column chromatography purification on an extracting solution after being concentrated. The nakedflower beautyberry extract has high purity and has the functions of bacteriostasis, hemostasis, pain relieving and convergence.

The invention provides an epigallo-catechin gallate (EGCG) with high purity and a preparation method thereof. The EGCG content is 98.0 percent to 99.9 percent. The preparation method mainly comprisesthe working procedures of extracting, separating by a chromatography and crystallizing. The invention has favorable reproducibility of preparation process, high acquired EGCG content, low cost and stable and controllable quality and is suitable for industrialized production.

The invention discloses a preparation method for an antibacterial silk fibroin membrane by a biological enzyme method, belongs to the field of textile biological technology, and aims to solve the disadvantages that a silk fibroin membrane prepared by a conventional method has a low strength and a hard and brittle membrane body, while avoiding the defects of large pollution and low biological safety of the silk fibroin membrane in a membrane preparing process by a chemical crosslink method. A catalytic oxidation function of tyrosinase is utilized, while achieving an intermolecular cross-linking of silk fibroin, a polypeptide antibacterial agent (such as epsilon-polylysine and L-polyarginine) having a primary amine structure is grafted onto the surface of the silk fibroin, and thus application performance of the silk fibroin membrane is improved; the specific technological process includes: preparing a silk fibroin solution, carrying out catalytic oxidation of the silk fibroin by tyrosinase, carrying out enzymatic grafting by the polypeptide antibacterial agent, drying and forming the membrane. The silk fibroin membrane prepared by the preparation method of the invention not only enables antibacterial performance to be improved, but also enables the strength, the elasticity and other mechanical properties of the silk fibroin membrane material to be improved. Compared with the silk fibroin membrane preparation method based on chemical crosslink, the tyrosinase method used for preparation of the silk fibroin membrane has the advantages of low energy consumption, high efficiency and less pollution, and is beneficial for environmental protection.

The invention relates to the technical field of daily necessities and provides a Chinese medicinal extract, and a hand washing gel with the extract and a preparation method of the hand washing gel. The Chinese medicinal extract is extracted from the following Chinese medicinal compositions in part by weight: 1 to 30 parts of honeysuckle flower, 1 to 15 parts of lightyellow sophora root, 1 to 50 parts of sessile stemona root, 1 to 20 parts of indigowoad leaf, 1 to 35 parts of Chinese mugwort leaf, 1 to 50 parts of atraotydin, 1 to 40 parts of golden thread, 1 to 30 parts of phellodendron and 1 to 30 parts of weeping forsythia. The Chinese medicinal extract greatly improves the antibacterium and sterilization effects of the Chinese medicinal compositions in the embodiment of the invention by using Chinese medicines with an antibacterial effect through mutual compatibility and mutual promotion effects of all the Chinese medicines.

The invention belongs to the textile field and particularly relates to antibacterial polyester fibers. The antibacterial polyester fibers are prepared through melt spinning from the following materials in parts by weight: 100 parts of PET (polyester) chips and 2-5 parts of antibacterial polyester master batch, wherein the antibacterial polyester master batch is prepared from PET chips as well as a preprocessing nano-silver antibacterial agent with weight accounting for 2%-5% of that of the PET chips, an antioxidant with weight accounting for 2%-3% of that of the PET chips, a lubricant with weight accounting for 0.1%-2% of that of the PET chips and a dispersant with weight accounting for 1%-3% of that of the PET chips through melt blending and extruding, and the preprocessing nano-silver antibacterial agent is nano silver subjected to coating treatment through a hydroxypropyl-beta-cyclodextrin solution in a fluidized bed. According to the invention, uniform distribution with a small particle size of the nano-silver antibacterial agent in a PET base body is guaranteed, and the high-efficiency and long-acting antibacterial polyester fibers are prepared through melt spinning. A preparation method disclosed by the invention is simple and feasible, and is suitable for industrial popularization and application.

The invention relates to self-service areca nut brine. The brine contains lotus leaf products and/or lotus leaf extracts and/or chitosan and derivatives thereof, wherein nuciferine and/or lotus leaf flavones in the lotus leaf extracts have obvious functions of weight losing, fat reducing, bacteria suppressing, virus resisting, detoxifying and oxidation resisting; and the chitosan and derivatives thereof have the functions of controlling cholesterol, suppressing bacteria, preventing and controlling hypertension and adsorbing and discharging heavy metals. The brine has the beneficial effects that not only is the variety of the areca nut brine expanded, but also the special functions of the areca nut brine are added; as the areca nut brine is independently packaged and is isolated from the areca nut semi-finished products, the areca nut product can not suffer from scumming, thus making up for the defects of the existing areca nut products and the deficiency of the brine preparation technology; and consumers can voluntarily select the variety and intake of the brine.

The invention discloses an oxidized graphene/silicon dioxide/high-molecular polymer composite nano-filtration membrane preparation method which includes the specific steps: preparing an oxidized graphene/silicon dioxide composite; dissolving the composite and high-molecular polymer in solvents to prepare spinning solution; preparing oxidized graphene/silicon dioxide/high-molecular polymer composite nano-filtration membrane filtering layer materials; preparing nonwoven/oxidized graphene/silicon dioxide/high-molecular polymer composite nano-filtration membrane filtering materials; drying the materials to obtain an oxidized graphene/silicon dioxide/high-molecular polymer composite nano-filtration membrane. The oxidized graphene/silicon dioxide/high-molecular polymer composite nano-filtration membrane prepared by the oxidized graphene/silicon dioxide/high-molecular polymer composite nano-filtration membrane preparation method has good filtering and adsorbing effects and has the functions of preventing PM2.5 (particulate matter 2.5) haze, releasing negative ions, low-temperature far infrared function, bacteria resistance and bacteriostasis, ultraviolet resistance and the like.

The invention discloses a lanthanide rare earth coordinated cellulose medical material and a preparation method thereof. The medical material is prepared by oxidizing primary hydroxyl of cellulose into carboxyl and then coordinating with lanthanide rare earth metal ions, namely performing sol-gel self-assembling reaction to rare earth metal hydrate and cellulose the primary hydroxyl of which is selectively oxidized into carboxyl. The preparation method is simple in preparation technology and good in controllability. The material not only has excellent moisture absorption and preservation properties and breathability, and better biocompatibility and excellent degradability of cellulose materials, but also has antibacterial property of the rare earth complex, can be used for antibacterial and bacteriostasis wound dressing due to broad-spectrum antibacterial property, and can also be used for detection tracing, special marking and optical display of biomolecules; the lanthanide rare earth coordinated cellulose medical material can be prepared into powder, gel, thin films, sponge or other porous materials, thus expanding the clinical application range; and the lanthanide rare earth coordinated cellulose medical material can be doped or grafted with macromolecular compounds so as to enhance the antibacterial and bacteriostasis properties and promote therapeutic effect on wound recovery.

The invention discloses an air-cooled refrigerator antibacterial device, comprising a housing. Opposite side walls of the housing are respectively provided with air inlets and air outlets. The air inlet side of the housing is provided with a fan. The air outlet side of the housing is provided with a sterilizing apparatus. The sterilizing apparatus comprises a titanium dioxide structure. The place of the titanium oxide structure is provided with a UV ozone lamp and a negative ion generator. The invention also discloses an antibacterial control method by using the air-cooled refrigerator antibacterial device. When the sterilizing apparatus works, hydroxyl, negative ions and ozone are produced to form a gaseous antibacterial agent with much stronger antibacterial and bactericidal effects than any one or the combination of any two of the above three. So the antibacterial and bactericidal effects are enhanced. The method of the present invention includes sending ozone, negative ions and hydroxyl of low concentration generated by the antibacterial device to every corner of upper, middle and lower shelves of the refrigerator by controlling a ventilation door switch. The ozone, negative ions and hydroxyl are continuously circulated under the action of the ventilation door to kill the bacteria in air and on the surface of foods in the refrigerator. Antibacterial test results show that the sterilization rate is greater than 90%.

The invention discloses a graphene heat-emitting film assembly with a single-side far infrared radiation function and a bed warmer based on the graphene heat-emitting film assembly. According to the graphene heat-emitting film assembly of the invention, one surface of a graphene heat-emitting film layer, which is far away an electrode layer, is provided with a far infrared reflecting layer. The graphene heat-emitting film assembly disclosed by the invention has an excellent infrared reflection effect and is more energy-saving; the bed warmer based on the graphene heat-emitting film assembly has the advantages of good heat-emitting stability, high temperature rise speed, uniform heat emission and soft material, and can realize the physical therapy functions of promoting blood circulation, repairing cells, preventing diseases and the like..

The invention discloses a nano silver added powerful sterilizing and lasting bacteria-resisting laundry detergent and a preparation method therefor, and relates to a laundry detergent and a preparation method therefor. The laundry detergent disclosed by the present invention aims to solve the problem that an existing laundry detergent is poor in sterilizing capability and poor in lasting bacteria-resisting property and has certain toxicity. The laundry detergent consists of a soapberry extraction liquid, a zeolite antibacterial agent carrying nano silver, a chitosan-nano silver solution, kathon and the like. The preparation method comprises the steps of: 1. weighing raw materials; 2. adding deionized water into a reactor, heating and stirring the mixture, and sequentially adding potassium hydroxide, oleic acid and palmitic acid; 3. sequentially adding fatty alcohol polyoxyethylene ether (3) sodium sulfate and the like into the reactor, stirring the mixture and adjusting pH; 4. reducing the temperature, adding the chitosan-nano silver solution, the zeolite antibacterial agent carrying nano silver and stirring the mixture; and 5. sequentially adding sodium chloride, kathon and spices into the reactor and stirring the mixture. The laundry detergent provided by the invention has the effects of powerful sterilization and lasting bacterial resistance, and is environmental-friendly and free of irritation. The present invention is used for preparing the powerful sterilizing and lasting bacteria-resisting laundry detergent.

The invention provides a medicinal composition for treating exogenous fever and process for preparation, wherein the composition is prepared mainly from capsule of weeping forsythia, prepared soybean, mentha, Schizonepeta tenuifolia, Bupleurum root, cape jasmine, rhubarb horsetails, sweet wormwood, radix paeoniae rubrathe, areca-nut, magnolia bark, baikal skullcap root, pinellia tuber and licorice root.

The invention discloses a hydrolysis graft strengthened anionic carboxymethyl cellulose flocculating agent. The hydrolysis graft strengthened anionic carboxymethyl cellulose flocculating agent is characterized by being obtained by carrying out hydrolysis reaction onto graft carboxymethyl cellulose under alkali condition, wherein the hydrolysis graft strengthened anionic carboxymethyl cellulose flocculating agent has the structure shown in the specification; the mass of polyacrylamide is 5%-65% of that of the hydrolysis graft strengthened anionic carboxymethyl cellulose flocculating agent; and the mass of the polyacrylic acid is 5%-70% of the that of the hydrolysis graft strengthened anionic carboxymethyl cellulose flocculating agent. The hydrolysis graft strengthened anionic carboxymethyl cellulose flocculating agent disclosed by the invention has the triple characteristic of carboxymethyl anionic group, polyacrylamide and polyacrylic acid. Moreover, the carboxymethyl anionic group, polyacrylamide and polyacrylic acid are linked by chemical bonds, so that the molecular weight of carboxymethyl cellulose is improved and the bonding and bridging flocculation is enhanced. Besides, the soluble pH range of the hydrolysis graft strengthened anionic carboxymethyl cellulose flocculating agent is expanded due to the existence of the grafting chain, and therefore, the pH sensitivity of the flocculation effect of carboxymethyl cellulose is effectively restrained.

The invention relates to an external composition, and a preparation and an application thereof and belongs to the field of medicines. The external composition provided by the invention is a medicine composition which contains chlorhexidine or officinal salt thereof, or benzalkonium bromide or officinal salt thereof and a recombinant human epidermal growth factor or a recombinant cattle alkali fibroblast growth factor. According to the invention, the medicine composition is also further prepared into gel, liniment, ointment or paste, and the gel further comprises chitosan or officinal salt thereof and hyaluronic acid or officinal salt thereof. When being used for treating vagina inflammation, the external composition disclosed by the invention can improve a vagina microenvironment, promote growth of granulation tissue and repair vagina micro damage; and when being used for skin wound atraumatic restorative treatment, the external composition also can speed up restoration and regeneration of a wound tissue, promote healing and reduce scar formation, so that the external composition has a wide medical application prospect.

The invention discloses a composite nanofiltration anti-haze antibiotic inhibition mask based on grapheme oxide. The mask comprises a mask body which is formed by sequentially stacking an anti-static processing layer, a grapheme oxide/silica/polymer composite nanometer filter core layer, an anion fiber non-woven fabric layer and an antibacterial layer from outside to inside. The outer exposed surface of the anti-static processing layer is provided with symmetrical fixing buckles, and a resistance band is detachably connected with the fixing buckles, and the mask body is bonded through hot-press to form the mask with a stereo breathing space. The polypropylene nonwoven fabric is loaded with the core filtration material made of the grapheme oxide/silica/polymer composite nanometer filter core layer, the anion fiber non-woven, the antibacterial layer by the method of the electrostatic spinning, the outermost layer of the propylene nonwoven fabric is treated by antistatic electricity. The anti-haze antibiotic inhibition face mask has the advantages of being high in efficiency of filtering away PM2.5 haze and good in permeability. The mask also has the functions of releasing negative ions to breath, resisting bacteria, low temperature far infrared and ultraviolet ray and the like.

The invention provides a composite pesticide for preventing and controlling rice sheath blight disease, which comprises hexaconazole and lentinan in a mass part ratio of 1-30:0.5-10. In the invention, the hexaconazole and lentinan are combined for preventing and controlling rice sheath blight disease, and when the composite pesticide is sprayed onto the leaves in different periods of the growth process of rice, the generation of rice sheath blight disease can be inhibited completely. The composite pesticide can improve the antibacterial and antivirus capability of rice plants and therefore increase quality and yield. The composite pesticide is suitable for preventing and controlling rice sheath blight disease and can effectively prevent and control diseases caused by ascomycetes, basidiomycetes and fungi imperfecti.

A functional dressing (film) comprises an edge remaining film 1 and a fixed pasting film 2 which are convenient to separate from each other, wherein a functional pad 3 is arranged between the edge remaining film 1 and the fixed pasting film 2, a protective film 4 is arranged on the face, with the back towards the functional pad, of the fixed pasting film, and a plurality of layers of annular adhesive tape or adhesive tape shaped like a Chinese character 'hui' is arranged on the fixed pasting film. Thus, on the one hand, the binding area of the fixed pasting film and the skin is reduced, and on the other hand, sweat can volatilize through reserved gap; due to the fact that a functional layer and a moisture-preserving layer are arranged in the functional pad, medicine ingredients in the functional layer and the moisture-preserving layer act on wounds and peripheral tissue, and the functional dressing (film) has the functions of stopping bleeding, resisting and preventing bacteria, diminishing inflammation, easing pain, promoting healing, reducing scar formation and accelerating local blood circulation.

The invention discloses a pseudosciaena crocea ice temperature fresh-keeping method, which comprises the steps of: ice spreading box loading, ice water cleaning, fluidized ozone ice pre-cooling, heat insulation box loading and ice temperature storage. The ozone ice and the fluidized ozone ice are sequentially adopted, the dual effects of lowering the fish body temperature and inhibiting the germ propagation are realized, further, the ice temperature storage is adopted, the freezing of the pseudosciaena crocea in the storage process is avoided, the original flavor and the fresh degree of the pseudosciaena crocea are more perfectly maintained, the quality guarantee period of the pseudosciaena crocea is greatly prolonged, and the pseudosciaena crocea is still fresh after being stored for 21 days.

The invention relates to a material for a multifunctional shoe pad, which contains three layers of materials, wherein common fabrics are arranged on the bottom layer; antibiosis non-woven fabrics are arranged on the upper layer; and the middle layer contains high water-absorption resin particles covered by the inorganic nanometer silver antibacterial agent on the surface and hard micro beads covered by the hot melt adhesive on the surface. A preparation method comprises the following steps: (1) coating materials: on a support plate, covering the antibiosis non-woven fabrics, spreading the hard micro beads and high water-absorption resin particles, and covering the common fabrics; (2) heating: heating the compound three-layered materials; (3) hot-pressing: hotly pressing the heated compound three-layered materials so as to form the material for multifunctional shoe; and (4) collecting the finished products. Before the step (1) is performed, the steps of covering the surface of the hard micro bead with hot melt adhesive and covering the surface of the high water-absorption resin with the antibacterial agent are performed. The material for multifunctional shoe has the advantages that the prepared materials have high moisture-absorption property and functions of antibiosis, deodorization and massaging sole of the foot, the functions are lasting, the effects of antibiosis and deodorization are obvious, and the materials are easily produced and have bright application prospect.

The invention belongs to the field of an air freshener and especially relates to a preparation method for a solid freshener. The method comprises the following steps: (1) preparing a stable chlorine dioxide solution; (2) preparing a colloid activating agent; (3) preparing microcapsule essence particles; (4) preparing the solid freshener. The solid freshener prepared according to the preparation method provided by the invention has an excellent air purifying effect; the essence powder is prepared from natural green plants and is green and safe; a microcapsule technique is cooperatively used for slowly releasing the fragrant active materials at a constant speed, so that the purpose of improving air quality can be achieved.

Provided are an anti-haze disinfecting mouth mask and a preparation method. The mouth mask comprises a mask body, the mask body is provided with a filter element pocket, and the filter element pocket is internally provided with an isolation filter element. The isolation filter element is formed by a non-woven fabric layer, a carbon fiber layer, and a disinfection layer. The middle part of the disinfection layer is gauze, and double surfaces of the gauze are coated with titanium dioxide chitosan films. The method comprises: preparing a TiO2 sol, preparing a chitosan liquid sol, performing magnetic stirring and ultrasonic vibration, coating to form a film, and preparing a filtering element. The mouth mask has good antibiosis disinfection and haze prevention effects, and has a function of absorbing and filtering heavy metal ions. The mouth mask is good in water absorption permeability, and can rapidly absorb steam discharged by respiration, so as to reduce adverse effect of water mist on glasses in cold weather. The isolation filter element can be cleaned by water or water vapor, and can be used repeatedly, so as to greatly reduce use cost of the anti-haze mouth mask.

The invention relates to the technical field of medical dressing, in particular to medical and antibacterial cationic biogel dressing and a preparation method thereof. The medical and antibacterial cationic biogel dressing comprises raw materials in percentage by weight as follows: glycerin, chitosan quaternary ammonium salt, amino-acid iodine, organosilicon quaternary ammonium salt, an indigowoad leaf extraction solution, a prunella vulgaris extraction solution, a paniculate swallowwort root extraction solution and the balance of purified water. The antibacterial dressing has a remarkable antibacterial effect, is transparent, high in water content, non-toxic, harmless, nonirritating and good in biocompatibility and adhesion, can isolate bacteria, kill bacteria, fungi and viruses and prevent skin and mucous membranes from infection, can stop bleeding and keep the wound wet and further can promote skin regeneration and healing of the wound. The medical and antibacterial cationic biogel dressing can be widely used for preventing and treating infection of skin wound such as skin bruise, scalding, burning, bedsore, ulcer, vagina skin eczema and the like and local mucous membrane infection of an oral cavity, the throat, gingivae and the like and can relieve pains, inhibit bacteria, protect wound, promote wound healing and inhibit scarring.

The invention discloses a hangover alleviating and liver protecting functional fermented beverage and a preparation method thereof, and belongs to the field of microbial fermentation application. Thefermented beverage consists of the following raw materials: 5-10g of red dates, 10-15g of kudzuvine root powder and the balance of water, wherein probiotics used for fermentation of the hangover alleviating and liver protecting functional fermented beverage are one of lactobacillus plantarum or pediococcus acidilactici. According to the invention, polysaccharides, vitamins, cellulose, phenolic substances, flavonoid substances and the like in red dates and kudzuvine roots exert a maximum effect through probiotic fermentation; the fermented beverage not only preserves the nutritional value of natural plants, but also has the nutritional and health-care effects of probiotic fermentation products; and the fermented beverage is unique in taste and obvious in effect and has a good market prospect.