72results about How to "Reduced antibacterial effect" patented technology

The invention discloses a novel water soluble natural polysaccharide antibacterial material. The molecules of the novel water soluble natural polysaccharide antibacterial material not only have guanidyl but also have amino acid groups, so that the biosafety of the novel water soluble natural polysaccharide antibacterial material is considered while the antibacterial property of chitosan is improved, and the novel water soluble natural polysaccharide antibacterial material is small in cytotoxicity and is a green antibacterial product. The invention also discloses a method of preparing the material. The method comprises the following steps: 1) dissolving chitosan in a diluted acid solution to obtain a diluted acid aqueous solution of chitosan; 2) adding cyanamide or dicyanamide into the diluted acid solution of chitosan for reaction; 3) adding an amino acid activated solution into a reaction system in the step 2) for amidation; 4) adding hydroxylamine hydrochloride for terminating reaction; and 5) dialyzing a reaction liquid which is filtered with deionized water, and performing microwave vacuum drying treatment to obtain the novel water soluble natural polysaccharide antibacterial material. The novel water soluble natural polysaccharide antibacterial material can be prepared in a reaction kettle by a primary reaction, and the used primary raw materials are rich in source and low in price and are suitable for industrial production.

The invention discloses a method for preparing compound biological activity sterilizing fluid, which comprises the steps: a proper amount of surface active agent is added to low molecular chitosan quaternary ammonium salt or low molecular chitosan solution under a stirring condition to be used as first fluid, povidone iodine is swelled to be used as second fluid, and the first fluid and the second fluid are evenly mixed according to a proper proportion and are regulated to a prescriptive range by a chemical reagent to obtain the compound biological activity sterilizing fluid. The prepared compound biological activity sterilizing fluid uses low molecular chitosan and povidone as double carriers, the chitosan not only can strengthen the bacterium inhibiting and sterilizing effects of the povidone iodine, but also has a certain adsorbing function for iodine released by the povidone iodine, causes the release of the iodine to be doubly controlled to reduce the volatilization of the iodine and increase the release uniformity of the iodine, the chitosan has degradability, the skin mucosa protecting function and the bacterium inhibiting function, therefore, the compound biological activity sterilizing fluid is stable and environmental-friendly and has high efficiency, low toxicity, low irritation and the skin protecting function.

The invention discloses a glycerol monolaurate microcapsule as well as a preparation method and an application of the glycerol monolaurate microcapsule. The preparation method comprises the following steps that: the glycerol monolaurate and emulsifying agents are dissolved into water being 60 to 70 DEG C to obtain solution A; wall materials are dissolved into the water being 60 to 70 DEG C to obtain solution B; the solution A and the solution B are mixed when the solution A and the solution B are still hot, stirring is carried out, and emulsion is obtained; and the emulsion is subjected to homogenizing and spray drying to obtain the glycerol monolaurate microcapsule, wherein the emulsifying agents are at least one kind of materials from sucrose ester, granulesten and fatty acid monoglyceride; and the wall materials are a mixture of maltodextrin and high-molecular compounds. The method provided by the invention is simple and practical, the controllability is strong, and the microencapsulation efficiency on core materials is higher; and the prepared glycerol monolaurate microcapsule has good flowability, dissolution dispersibility and mouth feeling, in addition, the anti-bacterium effect is not obviously reduced, and the glycerol monolaurate microcapsule can be applied to infant formula powder and realizes the effects of enhancing the immunity and resisting the infection.

The invention relates to a method for preparing a pharmaceutical composition for treating diseases of the urinary system and a method for detecting components thereof. The pharmaceutical composition comprises the components of desmodium styracifolium, corn silk, pyrrosia lingua, herba abri, tuckahoe, herba plantaginis, lygodium japonicum and rhizoma imperatae. The method for preparing the pharmaceutical composition comprises the following steps: step 1: dividing the tuckahoe into two parts; step 2: pulverizing the part of the tuckahoe accounting for 80-90% of total weight into fine powder; step 3: decocting the rest tuckahoe and the other seven crude drugs with water; and step 4: adding the fine tuckahoe powder, evenly mixing, drying, pulverizing into fine powder, screening, adding proper amounts of auxiliary materials, evenly mixing, pelletizing, drying, and sorting up the granules. The detecting method comprises the following steps: taking the pharmaceutical composition as the sample solution, and taking a pyrrosia lingua control medicine as the control medicine solution. The preparation technique and the detecting technique of the invention have the advantages of low cost and simple processing, reduce the heating time of the drugs, and are suitable for wide application in clinical treatment.

The invention discloses functional stitch-bonded non-woven fabric and a preparation method thereof. The functional stitch-bonded non-woven fabric comprises a hydrophobic layer I, a hydrophilic layer and a hydrophobic layer II which are stacked sequentially together, wherein all of the hydrophobic layer I, the hydrophilic layer and the hydrophobic layer II are made of hydrophobic fibers, hydrophilic fibers and hot-melt bonding fibers. The stitch-bonded non-woven fabric has function gradients comprising intensity gradients, moisture absorption gradients and antibacterial gradients and has the effects of breathability, high strength, wear resistance, tear resistance, moisture absorption, fast drying and bacterial resistance. The provided stitch-bonded non-woven fabric has a one-way moisture conducting property and can be used for manufacturing an insole of a shoe, and the comfort degree of feet is improved. Ramie-polyester blended materials are selected, the non-woven fabric has light and soft texture, high strength and good one-way moisture conducting effect and can effectively absorb moisture, moisture loss is avoided, a hydrophobic surface contacted with skin of feet is kept dry, and more comfortable feelings are brought to users using the one-way moisture-conducting product.

The invention discloses a bacterial inhibition type water purifier for marine aquaculture and a preparation method thereof. The bacterial inhibition type water purifier is prepared from filtering and drying a fermentation solution containing bacillus subtilis YB-01 CGMCC-No.9756 and brevibacillus laterosporus YB-02 CGMCC-No.9757. The strain of the water purifier is bacillus separated from a seawater source and has an excellent water purification effect and bacterial inhibition effect; the water purifier is a mixture containing bacteria and spores; the water purifier is long in preservation period and can quickly grow after entering the water; especially, the water purifier is regularly sprayed in seedling periods and developing periods of stichopus japonicas, turbot and fugu rubripes; the harmful materials such as ammonia nitrogen, nitrite and hydrogen sulfide in the marine aquaculture water can be quickly degraded; the heavy metal ions in bottom mud can be efficiently adsorbed; deterioration, acidification and smelly bottom mud of the water can be avoided; the growth of pathogenic bacteria in the marine aquaculture can be inhibited; diseases can be effectively prevented.

An amphoteric carboxymethyl chitosan guanidine salt derivative is provided. The structure formula of the derivative is shown in the specification, wherein n and x are natural numbers, the n is the number of repeated carboxymethyl chitosan structure units, the x is the number of repeated guanidyl substitute structure units, the n is 10-107, and the x is 1-107. According to the derivative, guanidyl having higher helectropositivity is introduced to a molecular chain of the carboxymethyl chitosan, thus endowing the chitosan with better bacteriostatic and antibacterial effects. A preparing method of the derivative is simple. The derivative is suitable for environments with different charges, and the using pH range of the derivative is wider.

The invention discloses a phase-change temperature-regulating fiber blended yarn and a preparation method thereof. The preparation method comprises the following steps of firstly, mixing paraffin hydrocarbon, graphite powder and methyl-2, 4-diisocyanate, and stirring at a high speed to obtain a phase-change temperature-regulating microcapsule; adding the prepared phase-change temperature-regulating microcapsule into nano-silver hydrogel to obtain modified nano-silver hydrogel; adding chitosan into sodium alginate hydrogel to obtain modified sodium alginate hydrogel; mixing the modified nano-silver hydrogel and the modified sodium alginate hydrogel into a spinning solution, and performing electrostatic spinning to obtain composite fibers; and spirally twisting the composite fibers, wool fibers and combed cotton to obtain the phase-change temperature-regulating fiber blended yarn. According to the phase-change temperature-adjusting fiber blended yarn and the preparation method thereof, the prepared phase-change temperature-adjusting fiber blended yarn has good temperature-adjusting and antibacterial properties, is more washable, keeps good water absorption and air permeability of fabric, and has high practicability.

The invention discloses a high-efficiency antibacterial ultra-filtration membrane and a preparation process thereof. By adopting a solution phase inversion method, the preparation process comprises the following steps: adding a nano antibacterial material into a membrane casting solution, adding a grafting initiator, and grafting the organic antibacterial material onto a macromolecular material, thereby preparing the antibacterial ultra-filtration membrane. By adopting the organic / inorganic antibacterial material which does not influence the performance of the ultra-filtration membrane, polyhexamethylene guanidine is macromolecular polymer powder with positive charges, can have reaction with a microbial cell membrane and is slightly soluble in the water, and the polyhexamethylene guanidine is grafted to a high polymer by utilizing a grafting agent, so that the stability is further guaranteed, and the loss and dropping along the time can be avoided. An inorganic antibacterial agent can effectively inhibit the breeding and growth of bacteria on the macromolecular membrane material; and when the inorganic antibacterial agent is combined with an organic antibacterial agent to use, the antibacterial effect is more remarkable.

The invention discloses a processing method for preparing lactic acid honey. The method comprises the following steps of: preparing lactic acid bacteria strain solution, disinfected liquefied honey and sterile water respectively, and mixing the three to prepare fermentation mother liquor A and fermentation mother liquor B, wherein the liquor A contains 20 to 25 percent of disinfected liquefied honey and the liquor B contains 5 to 25 percent of disinfected liquefied honey. After the fermentation of the fermentation mother liquor, the liquor B is lactic acid honeydew health-care beverage of a second terminal product. The liquor A is processed with honey increment, secondary fermentation, sterilization, concentration and the like to obtain transparent liquid colloidal lactic acid honey health-care food of a first terminal product. Through fermentation of lactic acid, sugar in the honey is transformed into the lactic acid, trace nutritional components are preserved, and multiple new nutritional substances such as enzyme, oligosaccharide, polysaccharide, complex carbohydrate and the like are produced at the same time. The method produces good biological preservative effect by using the bacteriostatic effect of the lactic acid, and does not need to add any preservative.

The invention provides a fruit fresh-keeping composition, and belongs to the technical field of fruit fresh-keeping. The fruit fresh-keeping composition is prepared from, by weight, 2-4 parts of potato modified starch, 0.1-0.3 part of sodium alginate, 0.5-2.0 parts of glycerinum, 0.05-0.3 part of melatonin and 0.01-0.05 part of lysozyme. The fruit fresh-keeping composition has the advantages thatthe fruit fresh-keeping composition is used for keeping fruits fresh so that the color, aroma and taste of the fruits can be maintained better, and the normal-temperature storage period of the fruitsafter fresh-keeping treatment can reach 30 days; the fruit fresh-keeping composition is used for keeping the fruits fresh, the operation is simple, and the cost is low.

The invention discloses a carrier-immobilized bacterial inhibition type water purifier for marine aquaculture and a preparation method thereof. The carrier-immobilized bacterial inhibition type water purifier is prepared by adsorbing and curing a mixed fermentation solution containing bacillus subtilis YB-01 CGMCC-No.9756 and brevibacillus laterosporus YB-02 CGMCC-No.9757. The strain of the water purifier is bacillus separated from a seawater source and has an excellent water purification effect and bacterial inhibition effect; kieselguhr and corncob powder are used as viable bacteria carriers, so that the water purifier is high in environmental tolerance, highly controllable in floatability, suspension property and sinking and floating properties and remarkable in three-dimensional purification effect on aquaculture water. By virtue of the water purifier, the harmful materials such as ammonia nitrogen, nitrite and hydrogen sulfide in the marine aquaculture water can be quickly degraded; the heavy metal ions in bottom mud can be efficiently adsorbed; deterioration, acidification and smelly bottom mud of the water can be avoided; the growth of main pathogenic bacteria in the marine aquaculture can be inhibited; diseases can be effectively prevented.

The invention provides a process for preparing pure natural ultrafine calcium powder. The process comprises the following steps: selecting materials, cleaning, crushing, calcining, grinding, hydrolyzing and performing superfine grinding. According to the invention, calcining under inert gases is not needed, the combustion is sufficient, and the heating time is greatly shortened and is only several hours. Therefore, the production efficiency is improved, the labor time is reduced, the product cost is reduced, and the increasingly extending requirement of the market can be met. The calcined products are hydrolyzed, so that lots of heat energy is released, the instability in the transport and storage process is reduced, and thus the product has high safety. Moreover, the substances such as calcium hydroxide belong to slight soluble strong base substances in water, so the product has long-acting good bacteriostatic action. Meanwhile, the hydrolyzed product is ground again, so that the grinding time is shortened, the abrasive particles can be ground into a narrower range, the acting superficial area is enlarged, the effect is improved, and the cost is reduced.

The invention discloses a preparation method of a degradable photocatalyst antibacterial mask, and relates to the technical field of masks, and the preparation method comprises the following steps: (1) preparing a degradable nose bridge strip; (2) preparing a mask body; and (3) mounting the degradable nose bridge strip on the mask body. The method has the advantages that the degradable nose bridgestrip and melt-blown cloth are both made of polylactic acid as raw materials and have degradability, all the raw materials of the degradable nose bridge strip have a synergistic effect, so that the prepared degradable nose bridge strip is relatively good in rebound rate and strength, and when the ratio of polylactic acid to silicone oil to titanium dioxide is changed, the prepared nose bridge strip cannot be formed, and the rebound rate and the strength cannot meet the requirements. All the raw materials in the melt-blown cloth have a synergistic effect, so that the prepared melt-blown clothis relatively good in filtering efficiency and antibacterial effect, and when the mass ratio of polylactic acid to electret master batch to nano zinc oxide is changed, the filtering performance and antibacterial performance of the melt-blown cloth are reduced.

The invention provides an anti-spattering film for a closestool. The anti-spattering film is connected with a first sucker, and the area of the anti-spattering film ranges from 1 / 5 to 4 / 5 of that of the water sealing level of the closestool. The surface of the anti-spattering film is coated with an anti-sticking bacteriostatic coating and the anti-spattering film is made of plastics or silicone. Through adoption of the structure, the anti-spattering film, together with the tensile strength of the water surface, can be used for buffering the impact generated when human excrement falls into water, and the human excrement falls onto the anti-spattering film at first and then falls into water, so that the impact between the human excrement and water is minimized, and the problem of water spattering of the closestool is solved. The anti-spattering film can be used for a long time due to the excellent antifouling effect and is simple in structure and low in cost. The characteristics of the sucker and the elasticity of the anti-spattering film are utilized, so that after being cleaned during flushing of the closestool, the anti-spattering film can recover to the original shape and position, and accordingly, relatively good self-cleaning and restoring effects are achieved.

The invention discloses a mushroom culture medium containing nut green peel. The mushroom culture medium is prepared from, by weight, 3-5 parts of nut green peel powder, 20-30 parts of macadamia branch powder, 40-50 parts of pretreated straw, 2-4 parts of gypsum powder, 0.5-1 part of magnesium phosphate, 0.6-1 part of magnesium sulfate, 15-20 parts of vinasse powder, 40-50 parts of plant ash, 0.6-0.8 part of calcium carbonate powder, 0.1-0.3 part of monopotassium phosphate and 1-3 parts of esterifying enzyme mold liquid. The dried nut green peel powder is crushed to obtain nut green peel powder, and harmful bacteria can be continuously prevented from invading mushroom strains within a certain time by adding the nut green peel powder, so that the sterilization and disinfection frequency of the mushroom culture medium in the production process is reduced, and the production flow of the mushroom culture medium is shortened.

The invention belongs to the technical field of dry powder coatings. The invention discloses a dry powder coating with lasting antibacterial and mildew-proof effects. The dry powder coating comprisesthe following components in percentage by weight: 40-50% of shell powder, 10-20% of lime, 10-15% of an inorganic antibacterial and mildew-proof agent, 10-20% of titanium dioxide, 0.4-0.6% of hydroxyethyl cellulose and 5-15% of redispersible rubber powder. The dry powder coating disclosed by the invention has efficient and lasting antibacterial and mildew-proof capabilities, is enhanced in antibacterial and mildew-proof effects after meeting water, is safe and environment-friendly, does not contain VOC, has the functions of adsorbing and decomposing harmful gas, realizing air permeability and regulating humidity, is suitable for various places, and has the antibacterial and mildew-proof capabilities which are not influenced by the environment.

The invention discloses an alginic acid seawater desalination pretreatment technology and preparation of an alginic acid compound salt fiber. The technology particularly comprises the following steps:dissolving a flocculant, namely alginic acid, in seawater after multiple-effect filtration or mechanical filtration pretreatment, and allowing alginic acid and sodium ions, potassium ions, magnesiumions and calcium ions in the seawater to be bonded via ion exchange and chelation to be precipitated in a form of alginic acid compound salt gel. The alginic acid compound salt fiber is prepared by preparing a fiber from the extracted gel according to a gel fiber-spinning method, and drying the fiber. The technology can effectively reduce a salt content of the seawater in a reverse osmosis membrane seawater desalination technology, alleviates the current high energy consumption situation caused by increase of seawater osmotic pressure and lowers energy consumption cost of the reverse osmosis membrane seawater desalination technology. In addition, the alginic acid compound salt gel precipitated in the seawater desalination pretreatment technology can be prepared into high added value medical alginate dressing, textile fibers and the like by deep processing, and the seawater desalination cost is further lowered.

The invention relates to a bacteriostatic anti-galactorrhea pad. The bacteriostatic anti-galactorrhea pad comprises an anti-galactorrhea pad body, and the anti-galactorrhea pad body sequentially comprises an antibacterial skin-friendly layer, an absorption core layer, a breathable bottom film layer and a fixing layer. The absorption core body layer is composed of an absorption layer and a wrapping layer wrapping the absorption layer. When in use, the antibacterial skin-friendly layer is arranged on one side of the skin of a human body, and the bacteriostatic anti-galactorrhea pad can be fixed on clothes of a user through the fixing layer; the antibacterial skin-friendly layer is made of a textile fabric containing chitin fibers; and the wrapping layer is made of a textile fabric sprayed or soaked by a bacteriostatic solution. According to the bacteriostatic anti-galactorrhea pad, the anti-bacterial skin-friendly layer is arranged on one side of the skin of the human body, external bacteria can be isolated and inhibited, the internal wrapping layer is further prepared from the textile fabric sprayed or soaked with the anti-bacterial solution, bacteria in the absorbing layer can be effectively inhibited, so that the bacteriostatic anti-galactorrhea pad and the anti-bacterial skin-friendly layer are matched to achieve the synergistic interaction effect, and the double antibacterial effect is achieved.

The invention discloses a plant-derived disease-resistant growth promoter for resisting wheat root rot and application thereof. According to the invention, a product of plant pyrolysis and gasification, pyroligneous liquor, is used as a disease-resistant raw material; meanwhile, organic substance humic acid for promoting the growth of plant root systems is added; the invention develops a plant-derived disease-resistant growth promoter for resisting wheat root rot and an efficient application method thereof. According to the invention, the effect of preventing and treating root rot is achievedwhile the growth of wheat root systems is promoted, a corresponding application method is formulated, the efficient utilization of the growth promoter is achieved, a material guarantee is provided forfertilizer and pesticide application reduction and synergy and production of high-quality and high-efficiency agricultural products, and the efficient utilization of waste resources is achieved.

The invention discloses a sterility test method for a gentamicin sulphate injection. A membrane filtration method is adopted, and the preparation step of a culture involves that a bigeminy closed membrane filter is used for membrane filtration, wherein the flushing amount of a buffer solution is 100-800 mL per membrane, and the addition amount of a culture medium is 100 mL per membrane; the preparation step of a test group involves that the gentamicin sulphate injection is added into a diluent to be diluted, wherein the volume of the diluent is 0-10 times of the volume of the injection; the filtration amount of the injection is 0.8 million of filtering titers per membrane; the preparation step of a positive control group involves that escherichia coli is adopted as positive contrast bacteria, and the positive contrast bacteria are added after the culture medium is added. According to the provided sterility test method for the gentamicin sulphate injection, according to the bacteriostatic characteristic of gentamicin sulphate, the sterility test process, the culture medium, the buffer solution and other elements are adjusted, and the sterility test can be conducted accurately and reliably on the gentamicin sulphate injection.

The invention discloses a treatment method for lowering the fruit-dropping rate before oil camellia picking, and relates to the technical field of oil camellia planting. The method comprises the steps of adopting bamboo vinegar compound liquid to uniformly spray oil camellias every 4-6 days when fruits and pericarp of the oil camellias become crineous till 15 days before fruit picking is conducted, wherein the spraying dosage for every plant is 200-250ml, after the bamboo vinegar compound liquid is continuously sprayed three times, phosphorous fertilizer is topdressed once, and the fertilization dosage is 60-65 g / plant. According to the treatment method for lowering the fruit-dropping rate before oil camellia picking, the fruit-dropping rate before oil camellia picking can be obviously lowered, and the yield of the oil camellias is guaranteed.

The invention discloses a feed for artificial culturing of leiocassis longirostris. Raw materials of the feed comprise, in parts by weight, 18-26 parts of millet, 5-10 parts of cicada pupa powder, 2-8 parts of kelp powder, 1-5 parts of mulberry leaf powder, 30-40 parts of an adhesive, 1-5 parts of baikal skullcap roots, 1-2 parts of dandelion herbs, 1-2 parts of immature flower of Japanese honeysuckle, 0.5-1.2 parts of coptis roots, 0.15-0.35 part of EM bacteria, 0.2-0.6 part of lecithin, 0.1-0.3 part of beta-carotene, and 0.5-1 part of a phagostimulant. The feed for artificial culturing of the leiocassis longirostris provided by the invention can obviously raise the surviving rate of the leiocassis longirostris, improve economic benefits of the artificial culturing, and significantly decrease the generation of bacterium infection and diseases such as fatty liver in a culturing process. The feed improves the quality of the leiocassis longirostris, and contains no antibiotic.

The invention relates to a grape high-efficiency compound fertilizer prepared from the following raw materials in parts by weight: 12 parts of corn vinasse, 13 parts of humus, 4 parts of ammonium dihydrogen phosphate, 7 parts of potassium sulfate, 0.4 parts of manganese chloride, 0.8 part of borax, 11 parts of calcium dihydrogen phosphate, 0.2 part of ammonium molybdate, 22 parts of a rapeseed cake, 1.2 parts of fructus aristolochiae, 33 parts of peat, 5 parts of flos farfarae, 0.8 part of laminaria japonica, 3 parts of artemisia indica, 12 parts of vaccinium bracteatum thunb, and 0.5 part of zinc gluconate. The grape dedicated compound fertilizer provided by the invention has less applying amount, the yield is improved obviously, and grape has good mouthfeel.

The invention discloses a method for degrading antibiotics in aquaculture wastewater by using immobilized dense pore bacteria, which is characterized in that it comprises the following steps: S1, inoculating the dense pore bacteria Pycnoporus sp. Cultivate 30-40 days mycelia overgrown medium; S2, first adjust the pH of the culture waste liquid containing tetracyclic antibiotics or sulfonamide antibiotics to 3.0-6.0, then slowly add it to the bacterial bag, let it stand for a period of time and release the liquid That's it. The invention provides a method for degrading antibiotics in aquaculture wastewater by using immobilized dense-porous bacteria, which is a cheap and efficient method for removing tetracyclic and sulfonamide antibiotics in aquaculture wastewater. Compared with traditional physical and chemical methods, it is green, safe and environment-friendly. It is friendly, meets the needs of sustainable development, and has broad application prospects in the application of antibiotics in the governance environment in the future.

The invention discloses an extraction system for stevioside. The system comprises a preparation tank, an extraction tank, a centrifuge, an adsorption column, a syrup preparation tank, a syrup storagetank, a decolorizing column, a colorless syrup storage tank, a membrane machine and a spray drying tower arranged in sequence, the preparation tank communicates with the extraction tank through a high-level tank, and the adsorption column communicates with the preparation tank. The invention also discloses an extraction system for the stevioside. The extraction process comprises the following paths: performing soaking in a hydrogen peroxide solution, performing centrifugal separation, performing resin adsorption, washing the column, performing desorption, performing decolorization, performingconcentration, and performing spray drying. The system and process provided by the invention effectively inhibit growth of bacteria, realize full recovery of soaking water, and greatly reduce the discharge and production costs of wastewater in the extraction process of stevia rebaudiana.

The invention discloses an antibacterial medical suture line and a preparation method thereof, belongs to the field of medical materials, and particularly relates to an antibacterial medical suture line and a preparation method thereof. The antibacterial medical suture line is obtained by conducting antibacterial finishing on composite fibers of a skin-core structure, wherein the composite fiber comprises hydroxypropyl cellulose, L-ascorbyl ester, a glutaraldehyde skin layer and a PPDO or PLA core layer, and the skin layer also contains PPDO or PLA. The prepared antibacterial medical suture line is good in antibacterial effect; the antibacterial durability is good, and the antibacterial durability effect reaches 5 d or above; the water immersion resistance is good, the reduction amplitudeof the antibacterial effect is small after water immersion is conducted for 24 h, and the antibacterial effect is at least improved by 25% or above.

The invention relates to a master batch of an antibacterial plastic product, a preparation method of the master batch and an antibacterial garbage can. The master batch is prepared by taking a nano antibacterial agent as a component, and is prepared from the following materials in parts by weight: 30 parts of a nano silver ion solution, 30 parts of a waterborne polyurethane adhesive, 50 parts of anano zeolite powder solution, 30 parts of an organosilicon quaternary ammonium salt solution, 10 parts of nano zinc oxide powder, 10 parts of nano titanium dioxide powder, 60 parts of calcium carbonate or light calcium powder, 90 parts of a polyethylene solid master batch and 50 parts of deionized water. The master batch has the advantages of being uniform in nano antibacterial agent distribution, better in sterilization effect, better in timeliness, high in stability and high in antibacterial activity.

The invention relates to the technical field of cosmetics, in particular to anti-aging, whitening and acne-removing cream and a preparation method thereof. The anti-aging, whitening and acne-removing cream comprises the following raw materials of, in parts by mass, 1-5 parts of bioactive peptide, 1-5 parts of peptide, 3-8 parts of plant extract, 4-10 parts of compound essential oil, 4-10 parts of phenoxyethanol, 4-10 parts of horse oil, 1-3 parts of retinol palmitate, 3-5 parts of coco-glucoside, 18-23 parts of a lipid additive, 3-8 parts of an antioxidant, 2-5 parts of an emulsifier and 60-80 parts of water. According to the anti-aging, whitening and acne-removing cream prepared by the invention, local metabolism is increased, the skin aging problem is relieved, the acne removing problem is solved from endogenous injury, cuticle cell differentiation is adjusted, the skin state where melanin is prone to deposition is improved, endocrine balance is stabilized and the like, the acne removing problem is solved from exogenous injury, the skin problem of acne removal is radically solved by endogenous and exogenous combination, and meanwhile, good anti-aging and whitening effects are also achieved.