202results about How to "Improve antibacterial function" patented technology

The invention discloses nano-ceramic composite fine polypropylene fiber and the processing method. The fiber contains nano-ceramic powder with 12-45 of 300, polypropylene with 250-270 of 300, polyethylene wax with 2-18 of 300 by weight. The denier of the fiber monofilament is 0.5-1.5D, the breaking strength is more than 2.5cN / dtex. We can get the fiber by the step of nano-ceramic powder aqueous dispersion, pre-dispersed precursor, composite masterbatch, composite sections, and high-speed spinning. The nano-ceramic powder is made up of ZrO2, or ZrO2 and ZrC, or TiO2 and Ag+. This type of fiber can be made of various type of textiles, such as sports apparel, underwear, bedding, shirt, socks and so on. The textiles with the function of launch biological waves of energy, anti-UV, anti-bacterial, absorption and barrier the near-infrared. So that to make the textiles have the function of anti-bacterial, energy health, insulation sunscreen, regenerative thermal insulation, dry and comfortable and so on.

The invention relates to cultivation soil, in particular to seedling-cultivating substrate soil for micro agriculture. The seedling-cultivating substrate soil is formed by mixing a substrate with rural soil or clay and comprises the following components in weight percent: 25% to 45% of the substrate and 55% to 75% of the rural soil or clay; the substrate comprises 60% to 80% of organic matters in weight percent and includes 1% to 3% of nitrogen, 1.5% to 3.5% phosphorus, 2% to 4% of potassium, and 0.02% to 0.8% of trace elements including magnesium, calcium, iron, manganese and boron; the pH value of the substrate is 6.5 to 6.8; the organic matters comprise 1 to 4 parts of bamboo vinegar liquid, 1 to 3 parts of starch-acrylic acid graft copolymer, 15 to 40 parts of a straw decomposition agent, 15 to 40 parts of fermented human and animal excreta, 10 to 18 parts of edible fungus residue, 3 to 6 parts of waste bamboo, 2 to 5 parts of plant-charcoal powder, 5 to 10 parts of silt slag, 4 to 6 parts of bone meal and 4 to 9 parts of soybean meal. According to the invention, specific components and proportion are adopted to prepare the organic matters, and the organic matters are combined with inorganic matters to form the acidulous substrate, so that the seedling-cultivating substrate soil is high in nutritional ingredient and appropriate in proportion of trace elements, has an excellent odor removing effect, and avoids undesirable odors produced during planting of vegetables and other plants for urban families.

The invention discloses broad-spectrum antimicrobial fragrant polypropylene resin for a washing machine. The resin is prepared from the following raw materials in percentage by weight: 60-84 percent of polypropylene, 0.2-1 percent of small molecule organic antibacterial agent, 0.2-1 percent of inorganic antimicrobial agent, 0.1-1 percent of freshener, 10-30 percent of glass fiber, 5-10 percent of compatilizer, 0.1-2 percent of dispersing agent and 0.1-1 percent of antioxygen. The invention further provides a preparation method of the broad-spectrum antimicrobial fragrant polypropylene resin for the washing machine. The broad-spectrum antimicrobial fragrant polypropylene resin for the washing machine has a broad-spectrum, efficient and lasting antibacterial function, and is higher in safety; washing machine water stirring blades or an washing machine inner barrel made of the resin provide clothing with specific fragrance; as the adding of the glass fibers, the resin has a stronger comprehensive mechanical property, and has low probability of deformation in the using process; the preparation process of the resin is simple, convenient, clean and efficient.

This invention refers to antibacterial mucilage glue fiber and preparation method. This antibacterial mucilage glue fiber takes nature aloe gel antimicrobial. Mucilage fiber filature liquid constitute of mucilage glue fiber screw former liquid and nature aloe gel. Nature aloe gel accession quantity is about mucilage glue fiber filature former liquid 1%-10%. The preparation method include hereinafter step: (1) disperse the nature aloe gel, get nature aloe gel accession quantity which grain diameter is less than 0.1um. (2) Let the nature aloe gel accession about 1%-10% rate of mucilage glue fiber join in the mucilage glue fiber filature former liquid, then filature spin as common wet method molding and get antibacterial mucilage glue fiber. The fiber germproof function is permanence, no side effect to human and has obvious change in antibacterial capability and biology capability .In this method, technics is simple and fit to industrialization produce.

The invention provides an antibacterial composite plastic packing membrane and the making process thereof. And it comprises heat sealing layer, middle layer, and outer layer, where the composition of the heat sealing layer contains: LLDPE 5-40 parts, LDPE 10-35parts, MPE 15-35parts, and antibacterial agent 0.5-5 parts,the composition of the middle layer contains MPE 3-5parts, LDPE 15-25parts, LLDPE 55-70parts, antibacterial agent 0.2-3parts,the composition of the outer layer contains MPE 3-13parts, LDPE 15-35parts and LLDPE 45-65parts. And it carefully chooses antibacterial agent which has high-efficiency broad-spectrum property, is safe and nontoxic to human body, and has good heat resistance and succeeds in combining the antibacterial agent with PE membrane which has common physical and mechanical properties and makes the antibacterial agent uniformly distributed on the surface of the PE membrane, thus improving antibacterial function of the membrane and the surface polarity and hydrophily of the membrane, so as to make the membrane have good antistatic property.

The invention discloses a rare-earth load type nano-TiO2 antimicrobial and making method, a new antimicrobial which uses the rare-earth ions as the antibacterial active component and the rare-earth activate nano-anatase type TiO2 and optically catalyzes antibacterial activity, composed of rare-earth element and semiconductor carrier. The nano-anatase type TiO2 80-99 shares, Re(NO3)3 10.7-0.3 share, and HNO3, the concentration 85%, 9.3-0.7 share. It makes mixing, constant-temperature blending, filtering, drying, baking and grinding to get the product, average particle diameter being not more than 1 micron m, the content of nano-anatase type TiO2 being 75-98%, and that of Re2O3 being 0.2-2%.

The invention belongs to the field of new material technology for hydrogen production, and particularly relates to a multiple-efficiency water purification ceramic material as well as a preparation method and application thereof. The multiple-efficiency water purification ceramic material is prepared from the following raw materials: 30-50 parts of substrate component, 20-40 parts of hydrogen-richcomponent, 2-5 parts of antibacterial component and 3-10 parts of binder; wherein the substrate component is made from tourmaline, Shuiyuan stone, medical stone, calcium oxide and zeolite; the hydrogen-rich component is prepared from metallic magnesium powder, magnesium oxide powder, KDF alloy powder and three-dimensional graphene; the antibacterial component is prepared from far-infrared ceramicpowder, nanometer zinc oxide, titanium oxide and nanometer zirconium dioxide; the binder is prepared from highly pure distilled water, carboxypropyl cellulose and bentonite. The multiple-efficiency water purification ceramic material of the invention can not only produce hydrogen but also store hydrogen when being added to water, and can significantly increase the hydrogen content in the water. The invention also provides the preparation method and application of the multiple-efficiency water purification ceramic material, and the process is simple and easy to implement, and the multiple-efficiency water purification ceramic material is applied to products such as a water purifier, a water filter pitcher and a water cup.

The invention discloses a method for preparing antibacterial paper on the basis of an interlayer self-assembling technology. In the method, cationic polyelectrolyte chitosan biguanide hydrochloride (CGH) with an antibacterial function, and anionic polyelectrolyte carboxymethyl cellulose sodium (CMC) are alternately deposited on the surface of a bleached kraft hardwood fiber to prepare a layered ordered self-assembled multilayer ultrathin film, which can improve the strength property of a paper sheet while endowing the paper sheet with a good antibacterial performance. Through the change of the environment and the technical conditions of an interlayer self-assembling system, multilayer film structures with different properties can be obtained on the surface of the bleached kraft hardwood fiber, the retention of an antibacterial agent on the fiber is improved, and the antibacterial effect of the paper sheet is enhanced; a layered ordered self-assembled nano-film is prepared by taking a negatively-charged fiber as a matrix and controlling the adsorption process of a reverse-phase ion system,; the preparation method is simple in production process, less in equipment investment and high in adaptability; the prepared antibacterial paper has better antibacterial performance and strength property; and antibacterial requirements of household paper and food packaging paper can be met better.

The invention discloses a production method of an immunoglobulin compound preparation for especially preventing and treating porcine diarrhea, and relates to the field of veterinary drugs and feed additives. The production method comprises the following steps: adding part of extracts or powder and the like to specific immunoglobulin or a substance which is not extracted and contains the specific immunoglobulin according to a certain proportion; and then evenly mixing to obtain the immunoglobulin compound preparation. By compositing the advantages of the immunoglobulin extract or powder, a novel antibiotic substitute is formed, thereby achieving the purposes of treating both symptoms and causes, accelerating the rehabilitation speed of a diarrheal animal, preventing and treating porcine diarrhea and meanwhile lowering cost; and the immunoglobulin compound preparation is a safe and hormone-free green product with special good effect on porcine diarrhea. The immunoglobulin compound preparation is taken as a feed additive or mixed with water and drunk. The immunoglobulin compound preparation is especially applicable to prevention and treatment of porcine diarrhea and also suitable for diarrheal diseases of animals such as various poultry, livestock and the like.

The invention provides a viscose fiber with the anti-bacterial function, which comprises viscose fiber and an antimicrobial contained therein. The viscose fiber with the anti-bacterial function is characterized in that the antimicrobial is a natural plant antimicrobial containing sarcandra glabra extractives. A sarcandra glabra extractive solution is added to a viscose filature stock solution, and the addition of sarcandra glabra extractive powder contained in the sarcandra glabra extractive solution is 1-5 percent by mass of the viscose filature stock solution. In the invention, the sarcandra glabra extractives are adopted as the antimicrobial which is evenly distributed in the fiber so that the fiber has lasting anti-bacterial function and dying effect without side effects on human bodies. The viscose fiber with the anti-bacterial function of sarcandra glabra is suitable for making knitted underwear, other clothes and bedding fabrics, has wide range of applications and great economic and social benefits. The preparation method of the invention has reasonable and simple process and is suitable for the industrialized production.

The invention discloses an antibacterial packaging film and a preparation method thereof. The antibacterial packaging film comprises chitosan as a main raw material and further comprises plant essential oil which is used as an antibacterial agent. By using a plant essential oil microcapsule formed by beta-cyclodextrin and plant essential oil as the antibacterial agent, the antibacterial packaging film not only can be used for improving the stability of essential oil, but also can be used for controlled release of the essential oil. In addition, the raw material chitosan is an environment-friendly macromolecular compound, so that the antibacterial packaging film has a good film-forming property and is excellent in antibacterial property.

The invention discloses an antibacterial regenerated cellulose fiber and a preparation method thereof, and the antibacterial cellulose fiber contains 0.5 ~ 10wt% of chitosan quaternary ammonium salt, the preparation method comprises the following steps: (1) preparing the chitosan quaternary ammonium salt with deionized water and sodium hydroxide into an antibacterial solution; (2) using cellulose pulp as a raw material to prepare spinning viscose; (3) adding the antibacterial solution to a viscose solution of any step from the yellowing step to before spinning, with the adding amount of the chitosan quaternary ammonium salt being 0.5 ~ 10% of the weight of alpha cellulose in the viscose solution, to obtain an antibacterial spinning viscose solution; and (4) obtaining the antibacterial regenerated cellulose fiber by coagulating bath spinning and drawing molding of the antibacterial spinning viscose solution, and then refining and drying. The antibacterial regenerated cellulose fiber simultaneously has biodegradability, biocompatibility, safety and antibacterial property and other excellent properties, and has better moisture absorption and moisture preservation, crease resistance and softness.

The invention discloses a traditional Chinese medicine composition for preparing a woman health-care viscose fiber, a prepared health-care viscose fiber and a preparation method of the health-care viscose fiber. The traditional Chinese medicine composition comprises the following traditional Chinese medicine components by weight percent: 20-35% of felwort, 15-25% of radix sophorae flavescentis, 15-25% of radix angelicae, 10-20% of flowers carthami and 10-20% of motherwort. The method for preparing the health-care viscose fiber by using the traditional Chinese medicine composition comprises the following steps: dissolving traditional Chinese medicine composition extract powder into an antibacterial health-care solution; heating borneol to melt, and emulsifying into an emulsified liquid; preparing spinning mucilage glue by adopting cellulose pulp as a raw material; adding the antibacterial health-care solution to a viscose solution in any step after yellowing is finished and before spinning is performed, so as to obtain an antibacterial health-care blend viscose solution; spinning and forming, drafting silk and carrying out post-treatment on the antibacterial health-care solution, so as to obtain the health-care viscose fiber; adding a borneol emulsion to the oiling step of after-treatment.

The invention discloses a surface grafting modified aromatic polyamide composite reverse osmosis membrane and a preparation method thereof. The surface grafting modified aromatic polyamide composite reverse osmosis membrane is formed by the connection of carboxyl groups on the surface of the aromatic polyamide composite reverse osmosis membrane and one primary amine of ethidene diamine and the connection of another primary amine of the ethidene diamine and hydroxymethyl groups of imidazolidinyl urea. The preparation method of the surface grafting modified aromatic polyamide composite reverse osmosis membrane comprises the following steps of: activating the carboxyl groups on the surface of the membrane by 1-(3-dimethylamino propyl group)-3-ethyl carbodiimide hydrochloride and N-hydroxyl succinimide, so that the carboxyl groups react with the primary amine of the ethidene diamine, and the ethidene diamine is grafted to the surface of the membrane; and activating imidazolidinyl urea molecules according to the same process, so that the imidazolidinyl urea molecules react with the another primary amine of the ethidene diamine molecule grafted to the surface of the membrane, thus obtaining the surface grafting modified aromatic polyamide composite reverse osmosis membrane. The preparation method has the advantages of mild reaction conditions and simple process; and the prepared surface grafting modified aromatic polyamide composite reverse osmosis membrane has high properties of biological pollution resistance and chlorine-resistance.

A preparation method of an antibacterial guanidine salt copolymer. The antibacterial guanidine salt copolymer is prepared through copolymerization from a hydrophilic antibacterial guanidine salt and a hydrophobic polymer by means of a solution reaction or a melt reaction, reaction molar ratio of the hydrophilic antibacterial guanidine salt to the hydrophobic polymer being 0.5-2. The antibacterial guanidine salt copolymer is amphiphilic and has adjustable terminal groups, so that the copolymer can be directly added to resin having a reactive functional group, and therefore, the antibacterial guanidine salt copolymer is tightly bonded to the basic resin through the reaction between the antibacterial guanidine salt copolymer and the basic resin so that a corresponding product has durable antibacterial function. The copolymer, whether in an aqueous system or a non-aqueous system, can be applied to achieve the antibacterial function, so that usage of the guanidine salt copolymer is greatly broadened.

The invention discloses a viscose fiber with an antibacterial function of ginkgo leaves. The viscose fiber contains at least 80wt% of alpha cellulose and at least 3.5mg / Kg of flavonoids, lactone compounds and organic acid substances; the viscose fiber has the bacteria inhibitive rate of larger than or equal to 92% for staphylococcus aureus, the bacteria inhibitive rate of larger than or equal to 91% for Escherichia coli and the bacteria inhibitive rate of larger than or equal to 81% for candida albicans; the fiber is lasting in antibacterial function and has no any side effects on human bodies. The invention also discloses a preparation method of the viscose fiber with the antibacterial function of ginkgo leaves. The method is reasonable and simple in process, suitable for industrial production and capable of sufficiently exerting the unique advantages of lasting antibacterial function of the ginkgo leaves.

The invention discloses tea polyphenol cellulose fiber which is composed of, by weight, 5-10% of tea polyphenol and 90-95% of cellulose, wherein the tea polyphenol is grafted on the cellulose through a coupling agent. A preparation method of the tea polyphenol cellulose fiber includes following steps: (1), preparing tea polyphenol pretreatment liquid: preparing a tea polyphenol water solution of 10-20% in mass fraction, adjusting pH value of the tea polyphenol water solution to 4-5, heating the tea polyphenol water solution to 70-80 DEG C, dropwise adding a silane coupling agent, increasing temperature of a system to 100-130 DEG C after dropwise adding is finished, maintaining reaction for 8-10h, adjusting pH value of reaction liquid to 7-8 to obtain the tea polyphenol pretreatment liquid, and cooling to room temperature for standby use; (2), performing viscose grafting treatment: adding the tea polyphenol pretreatment liquid into viscose, sufficiently mixing, entering a ripening intermediate bucket constantly maintained in a stirring state, and maintaining reaction for 30-36h to obtain tea polyphenol pre-grafting viscose; (3), directing spinning, washing and drying the tea polyphenol pre-grafting viscose obtained in the step (2) to obtain the tea polyphenol cellulose fiber.

The invention relates to a bacterial resistant sock, which pertains to the field of antimicrobial technique, especial relates to a washing durable sock having long-term bacterial resisting function and production method thereof. The bacterial resistant sock adopts a weaving process that uses natural fiber yarn in the inner layer, and synthetic filament in the outer layer; the sock is produced by using disinfectant WS-8810 as the antimicrobial finishing agent for health, and carrying out antimicrobial treatment after the dyeing treatment and before shaping treatment. Advantage and prominent functional effect of the invention are that it not only reaches the object of antimicrobial, deodorizing, beri-beri preventing, conveniently wearing, but also has great wearing resistance and durability. The invention has not only long-term antimicrobial function, but also washing durability, which still satisfies national antimicrobial standard for textile after 50 times of washing.

The invention provides a preparation method for durable antibacterial cellulose fibres. The preparation method comprises the following steps: S1, removing impurities from cellulose fibres in a physical mechanical mode to obtain impurity-removed fibres; S2, performing pre-treatment on the impurity-removed fibres, and dewatering to obtain dewatered fibres, wherein the pre-treatment comprises a cleaning process and / or a refining and bleaching process; S3, performing antibacterial finishing on the dewatered fibres with an antibacterial working liquid to obtain durable antibacterial cellulose fibres, wherein the antibacterial working liquid comprises an antibacterial agent, an alkaline auxiliary agent and a penetrating agent; the antibacterial agent is one or more of magnesium carbonate, coppernitrate, copper chloride, copper hydroxide, copper carbonate, basic cupric carbonate, zinc chloride, zinc sulphate, zinc hydroxide and zinc carbonate; and the alkaline auxiliary agent is one or moreof sodium hydroxide, potassium hydroxide, sodium bicarbonate, ammonium carbonate, ammonia water, sodium phosphate and sodium carbonate. The prepared cellulose fibres have a durable antibacterial effect; and the whiteness value of the fibres is high.

The invention discloses a method for forming a high-anti-bacterial-performance titanium-alloy artificial hip joint. The method includes the following technological steps that (1) CT scanning and layered slicing processing of a patient hip joint data model are carried out; (2) titanium-copper alloy powder is designed and prepared; (3) laser 3D printing forming of a titanium-alloy artificial hip joint is carried out; (4), a titanium-alloy artificial hip joint with micro-nano-size porous structure surface is constructed in situ with the anodic oxidation technology; (5) the anti-bacterial performance of the titanium-alloy artificial hip joint is further improved with the plasma high-temperature nitridation technology; (6) cleaning, sterilizing and drying are carried out, and then packaging is carried out. According to the method, the complex structure and the high anti-bacterial function of the artificial hip joint are integrally manufactured in sufficient cooperation with the laser 3D printing technology, the surface modification technology and the excellent anti-bacterial performance of copper elements. The forming method is simple, outstanding in performance, suitable for personalized customization of the high-anti-bacterial-performance titanium-alloy artificial hip joint, and has good social benefits and economic benefits.

The invention relates to a fertilizer preparing method, in particular to a method for preparing an organic fertilizer from plant charcoal and wood vinegar. The organic fertilizer is prepared through the following steps: preparation of the plant charcoal; wood vinegar treatment: first carrying out vacuum concentration on the wood vinegar to 50-65% of the original volume under the pressure of 0.01 to 0.03 MPa, and then removing tar for reserving; primary raw material matching: weighing, in parts by weight, 40-60 parts of the plant charcoal, 15-25 parts of the obtained wood vinegar and 20-30 parts of crystallization mother liquor containing 10-20% of abamectin, and stirring evenly; vacuum pressure treatment: filling the raw materials in a vacuum pressure tank for vacuum pumping to enable the vacuum degree to range from -0.015MPa to -0.025MPa, then preparing and adding 3-10 parts by weight of the rystallization mother liquor containing 10-20% of abamectin into the tank, increasing the pressure to 0.1MPa to 0.8MPa, and processing for 15-30min; and extruding granulation. The organic fertilizer which is made of the plant charcoal and the wood vinegar and is provided with increased sum of the total nutrients and the organic matter mass fraction can be prepared through the method.

The present invention discloses a traditional Chinese medicine composition for preparing male health viscose fibers, the prepared health viscose fibers and a preparation method thereof. The traditional Chinese medicine composition comprises the following traditional Chinese medicine components, by weight, 25-45% of common cnidium fruit, 25-45% of common curculigo rhizome, 20-40% of beautiful sweetgum fruit, and 10-30% of wild chrysanthemum flower. The method for preparing the health viscose fibers by using the traditional Chinese medicine composition comprises: dissolving traditional Chinese medicine composition extract powder to obtain an antibacterial health solution; heating borneol until being melted, and emulsifying to obtain an emulsifying solution; adopting a cellulose pulp as a raw material to prepare a spinning viscose, and adding the antibacterial health solution to the viscose solution in any steps from the end of yellowing to spinning to obtain an antibacterial health blending viscose solution; and carrying out spinning forming, strand drafting and post-treating on the antibacterial health blending viscose solution to obtain the health viscose fibers, wherein the borneol emulsifying solution is added in the oiling step of post-treating.

The invention relates to a preparation method of a chemical surface modification easily-dyed polyimide fabric. The method includes the preparation steps of firstly, processing the polyimide fabric in an alkali solution; secondly, washing the polyimide fabric. The polyimide fabric is changed into a fabric capable of being dyed from a fabric not capable of being dyed on the basis of not damaging physical and chemical performance of the polyimide fabric, and the problem that polyimide is difficult to dye is solved; in addition, due to the effect of the alkali solution, a large number of active groups can be formed in the surface of the fabric, amino groups can be combined with dye molecules, a strong sterilization function is achieved, the antibacterial and sterilization functions of the polyimide fabric can be improved, and the application field of the polyimide fabric within the spinning range is widened while the added value of the fabric is increased.

The invention discloses a preparation method of ion activation liquid, and the method comprises the following steps: (1) adding water into a stirrer, adding raw materials, and evenly mixing and stirring to obtain a mixed liquid, wherein the raw materials comprise sodium carbonate, potassium chloride, sodium silicate, borax, sugar and water; (2) heating the mixed liquid in the stirrer for more than 5 minutes; (3) conveying the heated mixed liquid into a storage filter tank via a water pump, and cooling precipitates to room temperature to obtain a semi-finished product; and (4) taking out the semi-finished product obtained in the step (3) from the storage filter tank, and canning to obtain the finished product. By utilizing the preparation method, feed vigor can be activated, and the biological immunity of the feed is improved.

The invention discloses a functional composite fiber and a preparation method thereof. The functional composite fiber comprises 15wt%-45wt% of silicon dioxide and 0.5wt%-10wt% of chitosan quaternary ammonium salt. The preparation method comprises the following steps: (1) preparing an antiseptic solution from the chitosan quaternary ammonium salt, deionized water and sodium hydroxide; (2) preparing alkali cellulose from cellulose pulp, yellowing the alkali cellulose and dissolving the yellowed alkali cellulose in a sodium hydroxide solution of the silicon dioxide, wherein the solid content of spinning viscose containing silicon dioxide is 9.5wt%-11.5wt%; (3) adding the antiseptic solution into the viscose solution containing silicon dioxide in any step from yellowing to spinning to prepare a blended viscose solution, wherein the weight of the chitosan quaternary ammonium salt in the added antiseptic solution accounts for 0.5%-10% of that of the solid in the viscose solution; and (4) performing spinning forming and after-treating on the blended viscose solution to obtain the functional composite fiber. The functional composite fiber prepared by the method has both flame retardant and antibacterial properties.

The invention discloses a preparation method of wild honeysuckle viscose fiber having antibacterial effect, wherein production of a viscose raw solution, production of a plant honeysuckle essence extraction solution, and production of honeysuckle viscose fiber are sequentially perform to obtain the wild honeysuckle viscose fiber. According to the present invention, the wild honeysuckle viscose fiber obtained through the method has effects of antibacterial effect, inflammation elimination, heat clearing and detoxifying, has advantages of lasting antibacterial function, safety to human body, notoxic-side effect, good mechanical property and good spinnability, and can be widely used in the fields of medicine, civil, industry, agriculture and the like.

The invention relates to a production method for fertilizer, in particular to a method for producing organic fertilizer with plant charcoal and bamboo vinegar. The method comprises the following steps: preparing plant charcoal; preparing bamboo vinegar; proportioning primary raw materials; carrying out vacuum pressurizing treatment and extrusion pelleting; and stirring uniformly, wherein the primary raw materials are the following materials by weight: 40 to 60 parts of obtained plant charcoal, 15 to 25 parts of obtained bamboo vinegar, and 20 to 30 parts of crystallized mother liquor containing 10 to 20 percent of abamectin; and the vacuum pressurizing treatment comprises the steps of filling the raw materials into a vacuum pressurizing tank, vacuumizing till the vacuity is -0.015 MPa to -0.025 MPa, preparing 3 to 10 weight parts of crystallized mother liquor containing 10 to 20 percent of abamectin, adding the 3 to 10 weight parts of crystallized mother liquor containing 10 to 20 percent of abamectin into the tank, pressurizing till the pressure is 0.1 MPa to 0.8 MPa, and treating for 15 to 30 min. According to the method, the total nutrient and the sum of organic matter mass fraction of the organic fertilizer prepared with plant charcoal and bamboo vinegar are improved.

The peptides and derivative metapeptides based upon natural antimicrobial peptides have potent and broad spectrum activity against pathogens exhibiting multiple antibiotic resistance. Specific peptides can also potentiate the antimicrobial functions of leukocytes, such as neutrophils. In addition, they exhibit lower inherent mammalian cell toxicities than conventional antimicrobial peptides, and overcome problems of toxicity, immunogenicity, and shortness of duration of effectiveness due to biodegradation, retaining activity in plasma and serum. The peptides and derivative metapeptides exhibit rapid microbicidal activities in vitro, can be used to potentiate conventional antimicrobial agents, to potentiate other antimicrobial peptides, and are active against many organisms that exhibit resistance to multiple antibiotics currently in existence.

The invention provides a natural preservative for fresh fishes. The composite preservative is characterized by comprising the following components in percentage by weight: 1.5% of oligomeric chitosan, 0.1% of tea polyphenol, 5% of food-grade bamboo vinegar, and the balance being water. The natural preservative can largely reduce the using amount of tea polyphenol and oligomeric chitosan, and has an important meaning on reducing the preservative cost, strengthening the fresh-keeping effect, and guaranteeing food safety.

The invention relates to a preparation method of an antibacterial polyvinyl acetal fibre, and the method comprises the following steps of: (1), after uniformly mixing tetrapod-like zinc oxide whiskers and palygorskite fibre, roasting in a vacuum furnace, after cooling, stirring and dispersing sodium hexametaphosphate in absolute ethyl alcohol, then, carrying out atmospheric pressure plasma treatment, ultrasonically dispersing in de-ionized water containing calcium stearate dispersion liquid, taking suspension whiskers in the upper layer of the solution to be filtered, taking a whisker mixed solution, repeating the operation till filtering and purifying, and after filtering and purifying, drying in a vacuum oven, thereby obtaining an antibacterial whisker mixture; (2), taking a titanate coupling agent, diluting and uniformly mixing the titanate coupling agent by using isopropanol, and, after heating, stirring and drying the titanate coupling agent with the antibacterial whisker mixture obtained in the step (1) in a mixing machine; and then, adding a silver antibacterial agent, a silver-loaded zirconium phosphate antibacterial agent, a zeolite antibacterial agent, an EPP (Foamed Polypropylene) bulking agent and calcium stearate, after stirring in the mixing machine, adding a polyvinyl alcohol spinning solution, and stirring at a high speed, thereby obtaining a broad-spectrum antibacterial polyvinyl alcohol spinning solution; and (3), mixing, filtering and defoaming the broad-spectrum antibacterial polyvinyl alcohol spinning solution obtained in the step (2), spinning by using a wet method or a dry method, and carrying out acetalation treatment, thereby obtaining broad-spectrum antibacterial polyvinyl acetal fibre.