31results about How to "No antibacterial effect" patented technology

The invention discloses a medium-chain fatty glyceride, wherein the mass ratio of octanoic acid to capric acid is (10-90) to (90-10). In an application of the medium-chain fatty glyceride in microcapsules, the weight of the medium-chain fatty glyceride is 50-70% of the weight of the microcapsule grains. After the medium-chain fatty glyceride is used for feeding animals, the production performance is increased and the healthy degree is improved.

The invention provides a chitosan-heparin layer-layer self-assembly small-caliber artificial terylene blood vessel and a production method thereof. The chitosan-heparin layer-layer self-assembly small-caliber artificial terylene blood vessel is characterized by comprising an artificial knitted terylene blood vessel the inner wall of which is provided with a presetting coating, and the inner wall of the presetting coating is provided with a chitosan-heparin layer-layer self-assembly coating. The invention also provides the production method of the chitosan-heparin layer-layer self-assembly small-caliber artificial terylene blood vessel. The product of the invention is used for by-pass operations of surrounding arteries of a human body as a blood vessel transplanter and improves the short-mid-term patency rate of the artificial blood vessel.

The invention provides an antimicrobial polysulphone flat ultrafiltration membrane, relates to an antimicrobial polysulphone flat ultrafiltration membrane and a preparation method thereof, and aims to solve the problem that in the prior art, the nanomaterial is hard to be dispersed uniformly and needs to be pretreated. The antimicrobial polysulphone flat ultrafiltration membrane is a silver nanoparticle-polysulphone composite flat ultrafiltration membrane which is prepared from polysulphone and silver nanoparticles by immersion precipitated phase conversion process, polysulphone is used as a film-forming material, and silver nanoparticles are prepared by liquid phase reduction of silver nitrate and used as an antimicrobial additive. The mass percentage of polysulphone in the mixture is 8% to 26%, silver nitrate accounts for 0.1% to 1% of the total mass, the reducing agent accounts for 5% to 20% of the total mass, the pore forming agent accounts for 3% to 10% of the total mass, and the solvents are in the balance. The ultrafiltration membrane plays a role of killing microorganisms and sterilizing in addition to filtration, the membrane surface is not contaminated, and the effluent quality is improved.

The invention relates to an odor type jacquard decorative fabric and a manufacturing method thereof. The odor type jacquard decorative fabric includes a jacquard decorative fabric, and the back surface of the jacquard decorative fabric is coated with chitosan essence micro-capsule size and dried at 90-100 DEG C. The invention has the advantages that firstly, the jacquard decorative fabric treated by the invention has durable fragrance and enough strength without damages or influence on decorative fabric appearance, and the fragrance can last for more than one year; secondly, the jacquard decorative fabric treated by the invention gradually release the fragrance which is pleasant and bacteriostatic and cause no toxic, stimulation or anaphylaxis to human body, realizing green environmentally-sound technology; thirdly, the invention is simple in process and especially convenient for wide fabric without adding special equipment, baking or dewatering, processing temperature can be easily obtained, and continuous production can be carried out; and fourthly, for the technique of the invention involves with nanotechnology and nanophase materials, the jacquard decorative fabric has the characteristic of high absorbability, can be washed many times and is practical.

The invention relates to a preservation solution for animal tissues and cells at a low temperature, and a using method thereof. One or more of water, polyol, a Collin's solution, a UW solution, an HTKsolution and Euro-collin's solution is used as a base solution, polyphenol, citric acid, poloxamer and vitamin E are added, and irradiation treatment using ultrasonic waves having a wavelength of 20kHz to 1 MHz and a sound intensity of 3 W/cm<2> or below adjusting the preservation solution is combined with the adjustment of ratio of different components in the preservation solution and control of the wavelength, the sound intensity and the irradiation time of the ultrasonic waves in order to improve the survival ability and the biological activity of animal tissues and cells in a low temperature environment.

The invention belongs to field of medical materials and discloses a synthesis method of chitosan/polyvinyl alcohol foam. The synthesis method comprises the following steps: dissolving polyvinyl alcohol to prepare a solution, and adding a chitosan solution into the solution; adding a foaming agent, namely 1-2ml/10g of polyvinyl alcohol, and stirring to ensure that the solution foams freely until the volume is 2.0-2.5 times of the original volume; adding sulfuric acid, stirring for 20-40 minutes continuously, then adding formaldehyde while keeping the temperature not more than 40 DEG C, and stirring for 15-30 minutes; and injecting foams in a mould, curing and forming at 55-60 DEG C, and then washing to ensure that the product is neutral and no foam is generated, thus obtaining the chitosan/polyvinyl alcohol composite foam material. The pure polyvinyl alcohol foam material has no bactriostasis; and the foam material combined with chitosan has obvious antibacterial property, and the antibacterial intensity of the material increases along with the increase of the chitosan content.

A naturally antibacterial mouthpiece is composed of internal, middle and external layers and features that at least its internal layer is made up of the non-woven fabric prepared from bamboo fibres or the blended fabric of bamboo fibres and cotton. As the bamboo fibre has naturally antibacterial action to white ringworm, xanthostaphylococcus, MRSA bacteria and colibacillus, it has high antibacterial and deodoring effect.

The invention belongs to the technical field of hand sanitizers, in particular to an antibiosis hand sanitizer. The invention provides the antibiosis hand sanitizer which is nontoxic, has no adverse effects, is pure natural and has a moisturizing effect. The antibiosis comprises the following raw materials: aloe essence extract, houttuynia cordata essence extract, fructus cnidii essence extract and distilled water; the aloe essence extract, houttuynia cordata essence extract, fructus cnidii essence extract and the distilled water are mixed and sufficiently stirred, acid and alkali reagents are added into the mixture for conditioning, and the solution after conditioning is subjected to high temperature vacuum sterilization treatment. The raw materials are adopted according to the following weight percentage: 20-35% of aloe essence extract, 2-8% of houttuynia cordata essence extract, 2-10% of fructus cnidii essence extract, and the rest amount of distilled water.

The invention provides a rare earth coordination compound containing a salicylidene glycine Schiff base and bipyridyl and a preparation method thereof. The rare earth coordination compound can be applied to bacteriostasis of colon bacillus. The rare earth coordination compound is characterized in that: the chemical formula of the coordination compound is RE(Sal-Gly)(Bipy)L.H2O, wherein RE is a rare earth ion; Sal-Gly is a salicylidene glycine Schiff base; Bipy is 2,2'-bipyridyl; and L is a negative univalent inorganic negative ion. The preparation method disclosed by the invention has the advantages of easiness and convenience for operating, mild conditions, high controllability, short treatment time and low energy consumption. A rare earth coordination compound bacteriostat has a small using amount of rare earth, and a good bacteriostasis effect is achieved under the synergetic action of rare earth ions and an organic ligand.

The invention provides a sea-buckthorn seed polypeptide solution with an inhibiting effect on intestinal pathogens as well as a preparation method and application of the sea-buckthorn seed polypeptide solution. The preparation steps are as follows: after sea-buckthorn seed residues are soaked, centrifugation is performed after ProteAX protease is added for hydrolysis, and the supernate is obtained, and is subjected to concentration and separation by an ultrafiltration membrane with the interception aperture of 5000 Da, so that the sea-buckthorn seed anti-bacteria polypeptide solution is obtained. The anti-bacteria culture experiment results show that the polypeptide solution within the concentration range of 10-20 mg/ml has the obvious inhibiting effect on salmonella, staphylococcus aureus, pseudomonas aeruginosa and other common intestinal pathogens. The sea-buckthorn seed polypeptide can be used as a feed additive.

The invention discloses a porous starch composite material, and a preparation method and applications thereof. The preparation method comprises following steps: porous starch is uniformly mixed with mesoporous zinc calcium silicate; dissolving in an ethanol solution is realized; ultrasonic dispersion is carried out; centrifugation is carried out; filtering is carried out; and an obtained precipitate is dried so as to obtain the porous starch composite material; wherein the mass ratio of porous starch to mesoporous zinc calcium silicate is controlled to be 1:(0.2-0.4). The porous starch composite material possesses rapid and excellent hemostatic effect, is capable of resisting bacteria continuously, is high in biocompatibility; degradation in vivo is realized continuously; the preparation method is simple; and application prospect is promising.

The invention discloses a composition having the functions of diminishing inflammation, inhibiting bacteria and promoting wound healing. The composition is characterized by being prepared from a hyaluronic acid, a compound I and a compound II, wherein the hyaluronic acid has the functions of diminishing inflammation and inhibiting bacteria; the compound I and the compound II are in synergistic interaction and inflammation diminishing and bacteria inhibiting functions with the hyaluronic acid; the compound I is prepared from the components of chamomile, green tea, prinsepia utilis royle and flos chrysanthemi indici; the compound II is prepared from ascorbic acid and dipotassium glycyrrhizinate. According to a biological composition containing activated hyaluronic acid and various functional components, by utilizing the synergistic effect of the biological composition in aspects of inflammation diminishing and bacteria inhibiting effects, the wound healing can be effectively promoted, the wound skin can be repaired, and the wound skin can be recovered to be beautiful.

The invention discloses veterinary yeast glucan injection, and aims to provide an animal immunopotentiator, which is prepared from yeast glucan through chemical modification and is a purely natural green veterinary medicine product. Each 100ml of injection contains 2 to 24g of sulfated or carboxymethyl water-soluble yeast glucan and the balance of water for injection. The injection can nonspecifically enhance the immunity of animals such as rabbits, pigs, sheep, cows and the like and improve the anti-infection capability of the animals. The preparation prepared by the invention is injection and has the advantages of no toxic or side effects, no residues and the like, is convenient to use and meets the current development requirements of green products.

The invention provides a method for evaluating the sterilization effect of a chlorine dioxide gas under states of low concentration and long time. The method comprises the following steps: providing an improved test carrier, determining the time for disinfection treatment, adding a neutralizing reagent with corresponding addition mass into the improved test carrier, and applying a bacterial suspension of a test bacterium to the improved test carrier through coating to obtain a first improved test carrier; and providing a chlorine dioxide gas environment having a concentration of 0.01-0.28mg/m<3>, disinfecting the first improved test carrier in the chlorine dioxide gas environment to obtain a second improved test carrier; and culturing the second improved test carrier in an incubator, recording the number of growing bacterial colonies and calculating a sterilization rate.

The invention discloses a medical instrument disinfectant. The medical instrument disinfectant is prepared from, by weight, 1-2 parts of dibromohydantoin, 1.6-3.8 parts of paraformaldehyde, 11-15 parts of chervil larkspur herb, 7-13 parts of a disinfecting drug, 8-12 parts of folium baeckeae, 6-8 parts of leaves of eucalyptus tereticornis, 4-7 parts of whiteflower cacalia seeds, 2.2-3.8 parts of ethylene oxide, 2-3 parts of Gemini quaternary ammonium salt and 0.5-1.5 parts of chlorinated sodium phosphate. The medical instrument disinfectant has the advantages that multiple Chinese herbal medicines with the higher antibacterial effect are screened out for reasonable compatibility, and then the disinfectant which is capable of quickly killing bacteria, wide in antibacterial spectrum, long in bacteriostatic time and the like is prepared; the prepared disinfectant is good in disinfection effect, capable of quickly killing pathogenic bacteria on an instrument, free of corrosive action on the equipment, stable in performance and long in quality guarantee period.

The invention relates to double-cooked wholewheat hot noodles and a preparation method and application thereof, and relates to the field of baked food, and the double-cooked wholewheat hot noodles are prepared from the following raw materials in parts by weight: 20-30 parts of water, 23-35 parts of wholewheat flour and 0.001-0.01 part of hemicellulase. The preparation method of the double-cooked wholewheat blanched seeds comprises the following steps: S1, preparing hot water; s2, performing dough scalding; s3, sub-packaging is carried out; s4, refrigerating; the toast is processed from the double-cooked whole wheat blanched seeds. The method has the advantages that the problems of poor gas holding and poor swelling property of the whole-wheat hot noodles are solved, so that the bread baking quality is improved.