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4665 results about "Antibacterial effect" patented technology

The most widely found effect of antibacterial soap is dry skin. In fact, the American Skin Association advises people with dry skin to avoid antibacterial soap. The powerful antibiotic agent in the soap, triclosan, strips the skin of its hydrating oils. Results can vary, ranging from mild itching and redness to irritation and flaking.

Method for preparing health-benefiting fermented soybean meal

The invention relates to a method for preparing health-benefiting fermented soybean meal enriched in small peptides, gamma-aminobutyric acid (GABA), reducing sugar, lactobacillus plantarum and antimicrobial peptide. By utilizing strains of aspergillus oryzae, saccharomyces cerevisiae, bacillus subtilis and lactobacillus plantarum, the small peptides, free amino acids, reducing sugar, GABA and high viable count content in the lactobacillus plantarum in the health-benefiting fermented soybean meal are obtained through the two-stage solid state fermentation method, the small peptides account for 8.01-18 percent, the free amino acids has the content of 80-300mg/g, the reducing sugar reaches 20-80mg/g, the GABA reaches 0.317-0.5mg/g, the viable count content in the lactobacillus plantarum is 2-6.5*1010cfu/g, the antibacterial titer of antimicrobial peptides is 2.0*103-7.0*104 IU/g, and the yield of the health-benefiting fermented soybean meal is 82.03-90 percent. According to the process, the nutrient effect of the soybean meal can be improved, the prepared fermented soybean meal has the antibacterial effect, partial antibiotics can be replaced, the fermented soybean meal is conveniently preserved and saved, the process is simple and feasible, and the fermented soybean meal is green and environment-friendly and has application significance and wide prospect in the feed industry and breeding industry.
Owner:ZHEJIANG UNIV OF TECH

Over-branched polyamidoamine and metal nano compound as well as preparation method and uses thereof

The invention relates to a hyper branched polyamide amine and metal nanometer compound and the preparation method and the application, belonging to the technical field of nanotechnology which is characterized in that: the compound comprises a polymer and metal nanometer particles, the polymer is the hyper branched polyamide amine made of blocking modification the hyper branched polyamide amine of the vinyl-terminated through different small organic molecules with amine, the content of the polymer is 89wt percent to 98wt percent; the metal nanometer particles are golden or silver nanometer particles, the content of the metal nanometer particles is 2wt percent to 11wt percent. During the preparation course, no reducing agent or ultraviolet irradiation is required, the precursor metal compounds are directly added into the hyper branched polyamide amine solution, and the metal nanometer particles with perfect water dispersion is generated only through one-step reaction under ambient temperature, the average particle size of which is one to eight nm, and the size is controllable. The inhibition zone method and the optical density method tested show that: the hyper branched polyamide amine and the metal nanometer particle compound have perfect antibacterial effects to a plurality of bacteria and fungus.
Owner:SHANGHAI JIAO TONG UNIV

Feed for meat ducks and traditional Chinese medicine additive thereof

ActiveCN102450523AIncrease production capacityBoth non-specific antibacterial effectAnimal feeding stuffBaical Skullcap RootHouttuynia
The invention relates to a feed for meat ducks, and the feed comprises corn flour, soybean flour, wheat bran, fish meal, yeast powder, shell powder, pulverized lime, iodized salt, beef tallow, a premix of vitamins, a premix of minerals and a traditional Chinese medicine additive. The traditional Chinese medicine additive comprises dwarf lilyturf tuber, spreading hedyotis herb, glossy privet fruit, sessile stemona root, common selfheal fruit-spike, heartleaf houttuynia herb, baical skullcap root, indigowoad leaf, largehead atractylodes rhizome, pilose Asiabell root, membranous milkvetch root, Chinese angelica, maifanite, Chinese magnoliavine fruit, south dodder seed, barbed skullcap herb, lotus leaf, rhizoma corydalis and fructus forsythiae. The feed additive disclosed by the invention combines the dual actions of being medicinal and nutritive, and can be used for preventing diseases, improving the production performance, and further regulating the immune functions of organisms; and the feed additive has a non-specific antibacterial effect, and can be used for fundamentally protecting and coordinating the overall health of livestock and poultry, preventing the diseases, fully playing and improving the potential ability of the organisms, improving the digestion rate and utilization rate of nutrient substances, enhancing the metabolism of the livestock and the poultry, promoting blood circulation and increasing the growth rate.
Owner:SHANDONG NEW HOPE LIUHE GROUP

Method for preparing biomedical titanium and titanium alloy surface antibacterial coatings

The invention discloses a method for preparing biomedical titanium and titanium alloy surface antibacterial coatings. The method comprises steps of firstly, processing the surface of a biomedical titanium or titanium alloy sample to be processed, immersing the biomedical titanium or titanium alloy sample in a glycol aqueous solution containing soluble fluoride and performing an anode oxidation treatment; secondly, immersing the biomedical titanium or titanium alloy sample after being subjected to the anode oxidation treatment in a silver nitrate solution, taking out the biomedical titanium or titanium alloy sample, using ultraviolet light radiation to process the biomedical titanium or titanium alloy sample and obtaining the silver-carrying biomedical titanium or titanium alloy sample; and performing a micro-arc oxidation treatment for the silver-carrying biomedical titanium or titanium alloy sample, performing ultrasonic cleaning and vacuum drying and obtaining the antibacterial coatings. The nano precoating layer preparation, the silver-carrying treatment and a micro-arc oxidation technology are combined, then a large amount of silver can be fixed on the biomedical titanium and titanium alloy sample surfaces and can be released slowly for a long time, the antibacterial performance of titanium and titanium alloys is greatly improved, the antibacterial effect can be kept for a long time, and the bacterial infection caused by the fact that a titanium and titanium alloy apparatus is embedded in a human body is greatly reduced or avoided.
Owner:NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH

Preparation method of mesoporous hollow spherical silver-loaded silicon dioxide antimicrobial

The invention relates to a preparation method of antimicrobial, and aims at providing a preparation method of mesoporous hollow spherical silver-loaded silicon dioxide antimicrobial, which comprises the following steps that polystyrene microspheres are added into mixed solution of ethanol with dissolved hexadecyl trimethyl ammonium bromide and de-ionized water to be uniformly mixed, then ammonia is added, ethyl orthosilicate is gradually dropped, the obtained solution is filtered, washed and dried to obtain compound powder with polystyrene being wrapped by silicon dioxide microspheres; the powder is subjected to heat preservation at the temperature of 550 DEG C to obtain hollow silicon dioxide microspheres; and under a light-resistant condition, the hollow silicon dioxide microspheres are soaked inside silver nitrate solution, and then the solution is filtered, dried and heated to the temperature of 300 to 500 DEG C so as to obtain the mesoporous hollow spherical silver-loaded silicon dioxide antimicrobial. The dispersivity and the stability of silver particles are improved, so that the agglomeration problem of traditional nano antimicrobial powder can be effectively solved. Meanwhile, the antimicrobial can be slowly released through mesoporous, the releasing of silver particles can be effectively maintained for a long time so as to realize the lasting antibacterial effect.
Owner:ZHEJIANG UNIV

Antibacterial macromolecular ultra-filtration membrane and preparation method thereof

ActiveCN102205209AHas a long-term sustained release effectLong-term effective antibacterial abilitySemi-permeable membranesFiberNon solvent
The invention relates to a macromolecular ultra-filtration membrane having a long-term antibacterial effect and a preparation method thereof. The preparation method for the antibacterial macromolecular ultra-filtration membrane comprises the following steps: (a) preparing a macromolecular membrane-preparing solution; (b) adding antibacterial grains into the macromolecular membrane-preparing solution, wherein the antibacterial grains are prepared by compounding inorganic carriers and antibacterial agents and have a long-term slow-releasing function, the weight of the antibacterial grains is 0.01-0.1% of the weight of the macromolecules in the macromolecular membrane-preparing solution, and the grain size of the antibacterial grains is 0.01-10 mu m; and (c) preparing the antibacterial macromolecular ultra-filtration membrane by adopting a dry-wet or wet spinning method through a non-solvent induced phase separation process (NIPS) or a thermally induced phase separation process (TIPS). Afiber ultra-filtration membrane provided by the invention can be applied to the water filtration and purification and has the long-term antibacterial effect. The macromolecular ultra-filtration membrane can be widely applied to the drinking water treatment, the household water purifiers, and the filtration and purification for foods and medicines.
Owner:江苏美能膜材料科技有限公司

Preparation method of nanometer zinc oxide-bamboo charcoal composite particle with antibacterial and adsorption functions

The invention relates to a preparation method of nanometer zinc oxide-bamboo charcoal composite particle with antibacterial and adsorption functions. The preparation method comprises the following steps: (1) adding a bamboo raw material into a mixed acid solution, reacting at 50-90 DEG C for 1-20 hours, adding alkali liquor to neutralize the solution after the reaction to obtain a carboxylated bamboo cellulose nanocrystals; (2) adding the carboxylated bamboo cellulose nanocrystals into a solution of 0.005-5 mol/L zinc ions, adding alkali liquor to neutralize, diluting the reaction product through deionized water, centrifuging and freeze drying or vacuum drying the reaction product, and then, vacuum calcining the reaction product at 200-600 DEG C for 1-8 hours to obtain the nanometer zinc oxide-bamboo charcoal composite particle. The process disclosed by the invention is simple, convenient, easy to operate and free of environmental pollution, and the preparation period of the composite particle is shortened; the prepared nanometer zinc oxide-bamboo charcoal composite particle is small in size, easy to regulate and control and large in specific surface area, the bamboo charcoal is very firmly combined with the nanometer zinc oxide, so that the antibacterial effect is durable, and the nanometer zinc oxide-bamboo charcoal composite particle has good adsorption capacity on toxic substance, thereby having a wide application prospect.
Owner:ZHEJIANG SCI-TECH UNIV +1

Preparation method of antibacterial metal organic framework composite nanofiber

The invention relates to a preparation method of an antibacterial metal organic framework composite nanofiber, and belongs to the technical field of antibacterial functional materials. The preparation method comprises the steps that silver metal organic framework nanoparticles are subjected to particle surface modifying through an auxiliary and then blended with a macromoleclar polymer in a solvent to obtain a raw material solution, and then the composite nanofiber is prepared through an electrostatic spinning technique. The composite nanofiber prepared through the method is good in stability and can effectively control the metal ion releasing concentration and speed and achieve the long-acting durable antibacterial effect, and the antibacterial rates of the composite nanofiber prepared through the method on staphylococcus aureus and escherichia coli both reach 99% or above. Accordingly, not only is the simple and convenient method for preparing the antibacterial metal organic framework composite nanofiber provided, but also the composite nanofiber prepared through the method can be applied to the related fields such as medical instruments, medical dressings, product packaging and textiles and has the good application prospect.
Owner:DALIAN UNIV OF TECH

Broiler feed and traditional Chinese medicine additive used in same

The invention relates to a broiler feed comprising wheat bran, corn grit, fish meal, broken egg crepe pieces, rice bran, bean dregs and a traditional Chinese medicine feed additive. The traditional Chinese medicine feed additive comprises spreading hedyotis herb, Chinese violet, rhizoma kaempferiae, dahurian patrinia herb, common selfheal fruit-spike, heartleaf houttuynia herb, baical skullcap root, indigowoad leaf, liquoric root, pilose Asiabell root, membranous milkvetch root, Chinese angelica, maifanite, Chinese magnoliavine fruit, south dodder seed, barbed skullcap herb and fructus forsythiae. The feed additive disclosed by the invention combines the dual actions of being medicinal and nutritive, and can be used for preventing diseases, improving the production performance, directly sterilizing and inhibiting bacteria and further regulating the immune functions of organisms; the feed additive with a non-specific antibacterial effect can be used for greatly increasing the fattened stock of chickens and the yield of chicken meat; furthermore, the meat is tender and delicious and the flavor is unique; and the harm to the chicken caused by chemicals and the side effects indirectlyaffecting the food safety are eliminated, the pure natural requirement of green foods can be achieved, and good economic benefits can be obtained.
Owner:SHANDONG NEW HOPE LIUHE GROUP
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