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40results about How to "Give full play to the antibacterial effect" patented technology

Laundry machine

A laundry machine (1) imparts an antibacterial effect to the laundry with metal ions. The laundry machine (1) has an ion-dissolving unit (100), which applies a voltage between electrodes (113, 114) to dissolve metal ions into the water from the anode. A drive circuit (120) of the ion-dissolving unit (100) is controlled so that the quantity of metal ions dissolved may be sufficient for the amount of laundry. The electrodes (113, 114) are made of silver, and water containing silver ions at a concentration of 50 ppb or more is used for rinsing. The operation program is set so that the water is in contact with the laundry for more than five minutes. At the initial stage of the contact, a stirring step of predetermined time is provided. After the step, a rest step of predetermined time is provided. The stirring power at the stirring step is controlled depending on the amount of laundry.
Owner:SHARP KK

Method for preparing high-strength antibacterial oil-water separation type material through cold plasma pretreatment

The invention discloses a method for preparing a high-strength antibacterial oil-water separation type material through cold plasma pretreatment, and belongs to the technical field of functional materials. The method comprises the following steps of the preparation of silver-loaded silica particles, the cold plasma pretreatment of a base material, the preparation of a sprayed treating fluid, the spraying of the treating fluid, the preparation of a hydrophobic modifying fluid and treatment, and finally, the obtaining of the high-strength antibacterial oil-water separation type material. The silver-loaded silica particles prepared by the method are stable in sizes and are uniform in distribution; a contact proportion between nano silver on the surface of a fiber of the base material and a harmful bacterium is increased; a product is enabled to obtain an optimal antibacterial effect; a sizing agent on the surface of the fiber of the base material is effectively removed through plasma treatment; the fiber is roughened; the cohesiveness between the fiber and a resin adhesive is enhanced; due to the existence of the resin adhesive, the distribution of the sliver-loaded silica particles on the surface of the fiber of the base material is fixed; the sliver-loaded silica particles are enabled to be difficult to fall off; the antibacterial effects of the sliver-loaded silica particles are sufficiently exerted; a finally made product has an excellent oil-water separation effect, and has a wider application prospect in the fields of medical treatment, oil-water treatment and the like in the future.
Owner:NORTHEAST FORESTRY UNIVERSITY

Preparation method and application of quaternary ammonium epoxy siloxane particles

InactiveCN104004192APrevention of reinfectionPolymerization is stable and long-lastingAntibacterial agentsDigestive systemEpoxyAfter treatment
The invention discloses a preparation method and an application of quaternary ammonium epoxy siloxane particles. The preparation method comprises the following steps: 1, adding tetraethyl orthosilicate, gamma-glycidoxypropyltrimethoxysilane and dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride to a reaction container containing ethanol, fully dissolving, adding dilute hydrochloric acid, and reacting for 1-5min; 2, adding a sodium hydroxide solution to the reaction container, and reacting under stirring for 1-3h; and 3, centrifuging solids obtained after the reaction in step 2, and drying. The quaternary ammonium epoxy siloxane particles can be applied in oral antibiotic medicines. Quaternary ammonium epoxy siloxane obtained in the invention endows an epoxy resin material with non-release durable antibiotic performance, can kill bacteria residual on the root canal in the root canal treatment process, and has a bacterium reinfection prevention effect after treatment.
Owner:TONGJI HOSPITAL ATTACHED TO TONGJI MEDICAL COLLEGE HUAZHONG SCI TECH

Amoxicillin or amoxicillin and clavulanate potassium instant chewable tablets for pet and preparation method for same

The invention belongs to the field of veterinary medicine, and particularly relates to amoxicillin or amoxicillin and clavulanate potassium instant chewable tablets for pet and a preparation method for the same. The instant chewable tablets are the amoxicillin or amoxicillin and clavulanate potassium instant chewable tablets prepared by combining with orally disintegrating tablets fast in medicine release speed in oral cavity and bad in disintegrating crispness and chewable tablets chewable but slow in disintegrating and medicine release speeds on the basis of the present dosage form of amoxicillin or amoxicillin and clavulanate potassium, so that administration for pet is greatly facilitated, and the antibacterial characteristic of amoxicillin can be adequately exerted. The preparation method for the instant chewable tablets comprises the following steps of: crushing amoxicillin or amoxicillin and clavulanate potassium and related auxiliary materials, and passing through a sieve of 50-100 meshes at first; uniformly mixing the main medicine and the selected auxiliary materials in a proper ratio, and producing wet granules; and drying and straightening the granules, and then tabletting. The instant chewable tablets have broad-spectrum antimicrobial activity and can be used for preventing and treating the bacterial infection of pet. While being used, the preparation is placed in the mouth of pet and fast melted by chewing, so that the convenience and compliance of administration for pet are solved well.
Owner:NANJING AGRICULTURAL UNIVERSITY

Antibacterial modified chitosan spray and preparation method thereof

ActiveCN104042719AChange in degree of deacetylationOptimum Molecular Level RangeAntibacterial agentsOrganic active ingredientsPruritus vulvaeChemistry
The invention relates to antibacterial modified chitosan spray and a preparation method thereof. The preparation method of the antibacterial modified chitosan spray comprises the steps of preparing modified chitosan, preparing gardenia oil, preparing geniposide, preparing spirulina polysaccharide and spirulina polypeptide and preparing chitosan spray. The antibacterial modified chitosan spray is applied to treatment on male and female pruritus vulvae and fungal infection, bacterial infection, folliculitis and vaginitis, also can be used for treating bedsore and long-term skin inflammation, can be widely applied and has antibacterial ability more than 99% on staphylococcus aureus, escherichia coli, streptococcus, candida albicans, pseudomonas aeruginosa or other fungi.
Owner:JIANGSU RUIJING TECH DEV

Environment-friendly nano-silver bacteriostatic compound

InactiveCN108997716APrevent oxidationHigh area activityEpoxyCross-link
The invention relates to an environment-friendly nano-silver bacteriostatic compound, and belongs to the technical field of antibacterial agents. Nano-copper powder as a raw material cooperates with epoxy resin to be used as a bacteriostatic carrier, the bacteriostatic effect can be fully played and good biodegradability is achieved; with sodium alginate as a reducing agent and a stabilizing agent, an AgNO3 solution is irradiated by ultraviolet light to prepare the nano-silver and silver compound, so the compound gives full play to a bacteriostatic effect, and has high biodegradability; addedmicrocrystalline paraffin wax can carry nano-silver in the system to float upward to the surface of the system during preparation, a water-inhibiting bacteriostatic layer is formed on the product surface, and the plasticity of the bacteriostatic compound system can be improved; in the subsequent preparation process, plant essential oil can occupy the positions of a part of functional groups in thecross-linking network of a composite matrix and chitosan, reduces the vibration intensity of covalent bonds in the cross-linking network molecules, plays a multi-level bacteriostatic effect, and hasno secondary pollution. The problems that the commonly used bacteriostatic agent can cause secondary pollution and has poor bacteriostatic effect in the use process are solved.
Owner:FOSHAN SENANG BIO TECH CO LTD

Glycerine monoester laurate micro emulsion and its preparing method and use

A monoglyceride laurate microemulsion used for antiseptic and antimildew purpose of food and cosmetics is prepared from surfactant, surfactant aid, monoglyceride laurate, and wate or sodium chloride or weak organic acid through proportioning, mixing the first three, heating to 45-80 deg.C while stirring for fully fusing, and slowly adding other until the liquid mixture becomes clear.
Owner:ZHEJIANG UNIV +1

Chlorhexidine gluconate bath disinfection liquid and preparation method thereof

The present invention relates to a disinfection liquid. The chlorhexidine gluconate bath disinfection liquid comprises, by weight, 1.5-2.5% of CHG, 0.3-1.5% of a compound preservative, 0.5-2.0% of a thickening agent, 2.0-10.0% of a surfactant, 0.5-5.0% of a skin moisturizing agent, 0.5-5.0% of a moisturizing agent, 0.1-2.0% of a penetrant, a proper amount of a pH value regulating agent, and the balance of water. The preparation method comprises: adding a sufficient amount of water to a reaction kettle, heating to a temperature of 50 DEG C, adding the thickening agent under stirring, completely swelling after 30 min, sequentially adding the surfactant, the skin moisturizing agent, the moisturizing agent, the penetrant and the pigment, uniformly mixing, then adding the CHG, stirring for 10 min, cooling to a room temperature, adding the preservative and the essence, stirring for 5 min, adjusting the material liquid to achieve the weak alkaline state, standing, and defoaming. According to the present invention, the CHG can quickly penetrate into the skin stratum corneum and can be adsorbed on the stratum corneum so as to achieve the rapid, complete and durable sterilization purpose.
Owner:SHANGHAI LIKANG DISINFECTION HIGH TECH

Polyester fiber with good antibacterial property

The invention relates to polyester fiber with good antibacterial property. The polyester fiber is prepared by the following steps of: mixing an antibacterial agent A and an antibacterial agent B to form an antibacterial agent mixture, then blending pure PET (Polyethylene Terephthalate) slices and the antibacterial agent mixture to prepare antibacterial modified PET slices, and then adopting a meltspinning mode to obtain polyester fiber with good antibacterial property, wherein the antibacterial agent A is TiO2 / zeolite antibacterial agent, and the antibacterial agent B is Cu2O / zeolite antibacterial agent.
Owner:广州森阳环保技术有限公司

Preparation method of Ag/TiO2 whisker-medical polyurethane composite material

The invention provides a preparation method of a Ag / TiO2 whisker-medical polyurethane composite material. The preparation method is characterized by comprising the following steps of: a, preparing 0.01-1M silver-salt solution, adding a positive-hole trapping agent and removing oxygen in a reaction system; b, adding TiO2 whiskers into the reaction system according to the mass ratio of silver to TiO2 of (1:1)-(1:50) in the silver-salt solution, stirring and adsorbing for 0.5-8h; c, under the stirring and anaerobic conditions, adopting a photochemical reduction method to reduce silver ions so asto prepare silver particles on the surfaces of the TiO2 whiskers; d, after the reaction is finished, filtering, obtaining the TiO2 whiskers carrying the silver particles, drying the TiO2 whiskers under the vacuum condition till the weight is constant, and storing for spare use; e, under room temperature, preparing polyurethane solution according to the proportion of the medical polyurethane to anorganic solvent of (1:3)-(1:30); and f, adding the Ag / TiO2 whiskers obtained in the step d into the medical polyurethane solution obtained in the step e, fully stirring to lead the Ag / TiO2 whiskers to be distributed uniformly in the medical polyurethane solution, then adopting a solvent volatilization method to prepare a polyurethane film with uniformly-dispersed Ag / TiO2 whiskers, drying the polyurethane film under the vacuum condition till the weight is constant, and storing for spare use. The Ag particles are prepared by the photo-reduction method, and the Ag particles carried by the Ag / TiO2 whiskers are not easy to fall, so that the possible biotoxicity possible to exist in the nano silver particles can be reduced furthest.
Owner:SOUTHEAST UNIV

Dressing with nano-zinc oxide composite antibiosis layer

Provided is a dressing with a nano-zinc oxide composite antibiosis layer. The dressing is provided with a base cloth (1). An adhering layer (2) is arranged on the inner face of the base cloth in a coating mode. A protecting layer (3) is pasted on the middle adhering layer of the base cloth. Release paper (4) is arranged on the protecting layer. The outer edge of the release paper is fixed on a corresponding exposed part on the periphery of the base cloth. The dressing is characterized in that the protecting layer is divided into three layers which are a nano-zinc oxide composite layer (3.1), a spongy fabric layer (3.2) and a non-woven fabric reinforcing layer (3.3) in sequence from the position near the base cloth to the position far from the base cloth, the thickness of the nano-zinc oxide composite layer is 0.5 mm- 1mm, the nano-zinc oxide composite layer is formed by the fact that nano-zinc oxide particles (3.12) are evenly arranged on a polymer base (3.11) in a coating mode, the D90 particle diameter of the nano-zinc oxide particles is 30 nm-50 nm, polylactic acid is used on the polymer base, and the nano-zinc oxide particles are fixed on the polymer base in an adhesive-bonding or heating-fixing mode.
Owner:TIANJIN PHARMACN MEDICAL TECH

Graphene lubricating oil and preparation method thereof

The invention discloses graphene lubricating oil and a preparation method thereof. The graphene lubricating oil is prepared from the following raw materials: engine oil, rice bran oil, ethylene glycoldipolynaphthenate, cyclohexane, triethanolamine, a silane coupling agent KH-570, octylphenol, 4-hydroxyl-4-methyl-2-pentanone, styrenated phenol, jojoba oil, alkenyl succinate, castor oil polyoxyethylene ether, benzotriazole, cinnamyl alcohol, secondary octanol, polyoxyethylene glyceryl ether laurate, methylisothiazolinone, uracil, carbon black, wax powder, corundum powder, nano silicon dioxide,stearic acid, pentaerythritol, naphthenic acid, ammonium bicarbonate, zinc acetylacetonate, nano graphene, aluminum nitride and an antibacterial agent; the graphene lubricating oil is prepared throughsteps of preparing a base material, preparing a modified material, mixing and the like. The graphene lubricating oil provided by the invention has excellent high-temperature resisting, antirust and antibacterial performance.
Owner:中国人民解放军空军勤务学院 +1

Compound ketoconazole lotion for hair

The invention discloses a compound ketoconazole lotion for hair. The compound ketoconazole lotion comprises, by weight, 1-2% of ketoconazole, 0.02-0.03% of clobetasol propionate, 20-26.5% of surfactant, 3-7% of cosurfactant, 0.2-0.5% of conditioner, 6-10% of foaming agent, 0.05-0.15% of ethylenediamine tetraacetic acid disodium salt, 0.5-3% of antioxidant, 0.01-0.03% of pigment and the balance purified water. Accessories used in the compound ketoconazole lotion for hair include the surfactant, the cosurfactant, the conditioner, the foaming agent, the antioxidant and the ethylenediamine tetraacetic acid disodium salt serving as the antioxidant synergist, the stabilizer and the softener. A proper number of accessories are matched with the ketoconazole and the clobetasol propionate so that the characters and the performance of the compound ketoconazole lotion for hair can be stable, the antibacterial activity of the ketoconazole and the clobetasol propionate can be brought into full play, in addition, compound ketoconazole lotion does not contain silicone oil or essence, the hair quality can be well conditioned, and the hair follicles cannot be damaged.
Owner:JIANGSU LINGBAO PHARMA

Microcapsule slow-release pungent litse fruit essential oil capable of being applied to fresh keeping of meat products

The invention relates to a method for extracting microcapsule slow-release pungent litse fruit essential oil capable of being applied to fresh keeping of meat products. The crushing particle size of dried pungent litse fruits is 40 meshes, the one-time feeding amount is 800 g, and the optimal technological parameters of supercritical CO2 extraction are as follows: the extraction pressure is 26 MPa, the extraction temperature is 46 DEG C, the extraction time is 148 min, and the extraction yield of the essential oil is up to 38.65%. Through analysis of physical and chemical indexes of the essential oil, it is found that the color L* value is 41.10, the a* value is 16.17, the b* value is 21.43, the relative density is 0.924, the saponification value is 195.29 mgKOH/g, the refractive index is 1.473, the peroxide value is 0.14 g/100 g, the acid value is 2.31 mgKOH/g, and all the indexes meet the requirements of the national standard. The optimal technological parameters for embedding the pungent litse fruit essential oil microcapsule are as follows: the ratio of a composite wall material is 1:1 (g/g), the ratio of a core material to a wall material is 1:5 (g/g), the solid content is 15%, the content of an emulsifier is 3%, the ratio of an emulsifier is 1:4 (g/g), the emulsification temperature is 40-50 DEG C, and the embedding rate of the pungent litse fruit essential oil microcapsule prepared under the conditions can reach 84.68%. The water content, the solubility and the bulk density are 3.05%, 91.04% and 0.35 g/cm<3> respectively.
Owner:云南省农业科学院农产品加工研究所 +1

Long-acting antibacterial agent

The invention discloses a long-acting antibacterial agent. The long-acting antibacterial agent is prepared by the following steps: 1) preparing polyurethane aerogel, 2) preparing a nano silicon dioxide polyurethane aerogel composite carrier, and 3) preparing the antibacterial agent. According to the long-acting antibacterial agent disclosed by the invention, titanium dioxide is loaded in the silicon dioxide hollow microspheres, so that the defect of poor stability of titanium dioxide can be effectively overcome, titanium dioxide is slowly diffused to the outside, the antibacterial time efficiency of the long-acting antibacterial agent can be improved, and the utilization rate of titanium dioxide is increased. The nano titanium dioxide-nano silicon dioxide compound is stably adsorbed by utilizing the characteristics of high specific surface area and high porosity of the polyurethane aerogel, and agglomeration of the nano titanium dioxide-nano silicon dioxide compound can be prevented, so that the antibacterial effect of the nano titanium dioxide can be fully exerted, and finally, excellent antibacterial performance is obtained. The long-acting antibacterial agent disclosed by the invention can be applied to preparation of materials such as coatings or films with antibacterial properties, and has a very good market application prospect.
Owner:JIANGSU SIDIKE NEW MATERIALS SCI & TECH CO LTD

Preparation method and application of soft tissue repair material

The invention relates to the technical field of biomedical materials, and discloses a preparation method of a soft tissue repair material, which comprises the following steps: obtaining and detecting an umbilical cord and a biological scaffold material, preparing a decellularized biological scaffold, culturing and amplifying umbilical cord mesenchymal stem cell spheres, and planting the stem cell spheres in a substrate layer of the decellularized biological scaffold. The invention discloses the soft tissue repair material; and the invention further discloses application of the soft tissue repair material in preparation of materials for repairing or replacing soft tissues. The umbilical cord mesenchymal stem cells and the decellularized biological scaffold material are organically combined, so that non-invasive repair of skin defects can be realized, the purpose of chronic refractory large-area soft tissue reconstruction can be achieved, the anti-adhesion effect, the bacteriostatic effect, wound protection, pain relief and epithelization starting capability can be fully exerted, the effect and effectiveness durability are higher than those of a traditional method, the healing time can be shortened, the treatment cost is reduced, operative wounds are avoided, and the soft tissue repair material has huge potential and advantages in the field of regenerative medicine.
Owner:周建大

Injection cefteram composition

The present invention discloses a cefteram composition for injection. It includes cefteram as active component or its medicinal salt and solubility promoter, and the described solubility promoter is basic amino acid or inorganic acid salt of alkali metal or organic acid salt of alkali metal or inorganic acid salt of alkali earth metal or organic acid salt of alkali earth metal. The weight portion ratio of cefteram or its medicinal salt and solubility promoter is 1:0.05-20. Said injection has good antibacterial action, and has good water solubility.
Owner:黄文豪

A foundation liquid with good antibacterial property and a preparation method thereof

The invention discloses a foundation liquid with good antibacterial property and a preparation method thereof, wherein the foundation liquid with good antibacterial property comprises the following raw materials: PEG-30 dimeric hydroxystearate, polyglycerol-2 dimeric hydroxystearate, polyglycerol-3 Diisostearic acid, hydrogenated polyisobutylene, polyoxyethylene cetyl stearyl diether, kaolin, titanium dioxide, ferric oxide, acrylic acid (ester) / stearyl alcohol polyether 20 methacrylate copolymer, carbomer, polyol, PEG-40 hydrogenate castor oil, preservative, pH value regulator, water, polylactic acid, zinc oxide, chitosan, sil bromide, vitamin E, and antibacterial modifying assistant, wherein that antibacterial foundation liquid is prepared through the steps of preparing an oil phase, prepare a transparent aqueous phase, adjusting pH value, and the like. The foundation liquid of the invention can be discolored and has excellent antibacterial effect.
Owner:长沙浩然医疗科技有限公司

Starch/epsilon-polylysine/poly (L-lactic acid) bi-crosslinking material as well as preparation method and application thereof

The invention belongs to the field of natural high polymer materials, and provides a starch / epsilon-polylysine / poly (L-lactic acid) bi-crosslinking material and a preparation method and application thereof.The preparation method comprises the following steps that a catalyst and starch dispersion liquid are added into an isocyanato-terminated polyurethane prepolymer (PO) solution with the side chain containing aldehyde groups, the temperature is increased to 70-80 DEG C, a stirring reaction is conducted, and a reaction liquid is obtained; after infrared detection of disappearance of an-NCO characteristic absorption peak (about 30-60 min), cooling the system to 10-12 DEG C, adding an epsilon-polylysine solution cooled to 10-12 DEG C into the system, rapidly stirring, pouring into a mold, degassing, standing at 40 DEG C to volatilize a solvent for about 10 days to form a film, and finally drying the film to constant weight to obtain the epsilon-polylysine film. The starch / epsilon-polylysine / poly (L-lactic acid) bi-crosslinked membrane material is obtained. The material has good mechanical properties, degradability, broad-spectrum antibacterial property and cytocompatibility, not only can be applied to degradable plastics and food packaging materials, but also has a good prospect in the field of medical implant materials.
Owner:SHANDONG NORMAL UNIV

Method for promoting topical drug release on bone cement carried with antibiotics

The present invention provides a releasing method for promoting antibiotics loading bone cement local drug. The acrylic acid bone cement of loading antibiotics is put in a volume bottle containing phosphate buffer liquid. Micro bubble agent is injected. An ultrasonic probe is arranged at the bottom of the volume bottle. An ultrasonic generation device is started. The ultrasonic frequency is 20-100 KHz, and the space average time strength is 20mW / cm<2>-3W / cm<2>. The model includes a continuous type and a pulse type. The duty cycle is 20 to 100 percent. The modulation pulse frequency is 1Hz-10 KHz. The method can promote the releasing speed and the total amount of the antibiotics loading bone cement drug and maintain for a certain time, can effectively prevent the formation of pellicle, can enhance the sensitivity of bacteria to the antibiotics, can effectively prevent the adhesion of the bacteria and secrete the pellicle, thereby improving the antibacterial effect of the antibiotics loading bone cement and expanding the application range of the antibiotics loading bone cement.
Owner:ZHEJIANG UNIV

Long-shelf-life traditional Chinese medicinal honeylocust shampoo and preparation method thereof

The invention belongs to the technical field of personal care products and particularly relates to long-shelf-life traditional Chinese medicinal honeylocust shampoo and a preparation method thereof. through reasonable compatibility and treatment, Chinese honeylocust, tea leaf, jasmine fruit, honeysuckle flower, asiatic pennywort herb, uniflower swisscentaury root and myrrh are reasonably blended in terms of property; the effects of the materials are given to full play. The reasonable ratio of the medicinal materials and suitable alcohol concentration enable the antibacterial effect of the shampoo herein to be optimal, the shampoo is ensured, and the long-shelf-life traditional Chinese medicinal honeylocust shampoo is finally attained. The long-shelf-life traditional Chinese medicinal honeylocust shampoo can effectively eliminate hair and scalp sebum stain and restore the clean environment of scalp follicles, thereby arriving at dandruff removal and itching elimination. The long-shelf-life traditional Chinese medicinal honeylocust shampoo made from pure natural traditional Chinese medicines has no chemical ingredients, has no impact on human health and has long shelf life.
Owner:GUIZHOU JIEYIKANG PLANT CHEM IND CO LTD

Dressing with nano zinc oxide composite antibacterial layer and far-infrared ceramic micro powder

InactiveCN104207885APrevent over-releaseSlow over releaseAdhesive dressingsAbsorbent padsViscoseZno nanoparticles
A dressing with a nano zinc oxide composite antibacterial layer and far-infrared ceramic micro powder is provided with base cloth, the inner face of the base cloth is coated with a viscose layer, protecting layers adhere to the viscose layer in the middle of the base cloth, the protecting layers are covered with release paper, and the outer edge of the release paper is fixed to the corresponding exposed part on the periphery of the base cloth. The dressing is characterized in that three protecting layers exist and are the far-infrared nano zinc oxide composite layer, the sponge-shaped fabric layer and the non-woven fabric reinforcing layer in sequence with the distance from the protecting layers to the base cloth becoming larger and larger, and the thickness of the nano zinc oxide composite layer ranges from 0.5 mm to 1 mm; according to the formation mode, the polymer base bottom is coated with nano zinc oxide and far-infrared ceramic micro powder, the D90 particle diameter of nano zinc oxide particles ranges from 30 nm to 50 nm, the particle diameter of the far-infrared ceramic micro powder ranges from 10 microns to 15 microns, and nano zinc oxide particles with the volume accounting for 5% to 10% that of the viscose layer are further evenly distributed in the viscose layer.
Owner:TIANJIN PHARMACN MEDICAL TECH

Method for prolonging cold storage preservation period of tilapia fillets by means of chitosan with composite molecular weights

The invention relates to a method for prolonging the cold storage preservation period of tilapia fillets by means of chitosan with the composite molecular weights, and belongs to the technical field of aquatic product preservation and food processing application. The preparation method comprises the steps that the tilapia fillets are firstly sterilized in ozone water with the temperature of 0 DEG C-10 DEG C, coated with chitosan-acetic acid solutions which are composited according to a certain proportion and have the different molecular weights and then put in an environment with the temperature of 0 DEG C-10 DEG C for cold storage, and finally the cold storage preservation period of the tilapia fillets is comprehensively determined and evaluated. The method has the advantage that the role of the chitosan with the different molecular weights in preservation is fully played, and therefore the cold storage preservation period of the tilapia fillets is prolonged. The method can be applied to the fields of aquatic product preservation, food processing and the like and is easy to operate, low in production cost and good in effect.
Owner:GUANGDONG OCEAN UNIVERSITY

Nano-polypeptide hydrogel of composite stem cell spheres as well as preparation method and application of nano-polypeptide hydrogel

The invention discloses nano polypeptide hydrogel of composite stem cell spheres as well as a preparation method and application of the nano polypeptide hydrogel. The preparation method comprises the following steps: (a) preparing the stem cell spheres; (b) preparing the self-assembled polypeptide hydrogel; and (c) compounding of the stem cell spheres and the self-assembled polypeptide hydrogel: inoculating the stem cell spheres into the self-assembled hydrogel to obtain the nano polypeptide hydrogel compounded with the stem cell spheres. According to the invention, the human umbilical cord mesenchymal stem cell spheres and the nano-polypeptide hydrogel are combined and can be directly smeared on a skin wound, so that the survival of transplanted cells is greatly improved, the pain in the transplanting process is relieved, and the operative wound is avoided; the transplanted stem cells gradually disappear after wound healing, and the method is more convenient, safer and more efficient.
Owner:QINGDAO WOMEN & CHILDREN HOSPITAL

Silver-containing nanocomposite antibacterial coating and preparation method thereof

The invention discloses a silver-containing nanometer composite antibacterial coating and a preparation method thereof. The preparation method comprises: synthesizing a maleic acid mono-fatty alcoholester sodium salt methyl methacrylate by using polyacrylate and polymethyl methacrylate as a polyacrylate copolymerization matrixes, wherein the methyl methacrylate used as both a polymerizable emulsifier and an auxiliary comonomer regulates the dispersion of Ag nanoparticles in the polymer matrix through electrostatic interaction and steric hindrance interaction; preparing a nanometer composite emulsion through semi-continuous emulsion polymerization; preparing a nanometer composite coating by using butyl acrylate and polymethyl methacrylate as the main components of the coating through an emulsion polymerization method; and dispersing Ag nanoparticles in the polymer matrix to prepare the high-dispersion nanometer composite antibacterial coating.
Owner:TIANJIN UNIV

Production method of dried salmon floss with characteristics of long shelf life and good taste

The invention discloses a production method of dried salmon floss with characteristics of long shelf life and good taste. The production method comprises: S1, raw material treatment; S2, slicing; S3,steaming; S4, crushing; S5, feeding; S6, floss preparing; S7, bottling; S8, sterilization; and S9, thermal insulation experiment. According to the present invention, the color, the aroma and the tasteof dried salmon floss products are ensured; the fresh-keeping agent can completely provide the antibacterial effect at the temperature; the composite fresh-keeping agent is prepared by completely compounding natural bio-based raw materials, and various components synergistically act, are not absorbed by the human body, and cannot affect the human body; and with the method, the sterilization temperature of dried fish floss products can be reduced while the shelf life of the product can be prolonged, and the fresh and delicious taste of dried fish floss products can be ensured.
Owner:DALIAN RICH SEAFOOD
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