871results about How to "Play a bactericidal effect" patented technology

The invention provides a sewage purifying agent which is prepared from the following components and raw materials in parts by weight: 90-100 parts of modified attapulgite, 10-15 parts of montmorillonite powder, 5-7 parts of chitosan, 4-5 parts of gypsum powder, 5-6 parts of quartz stone powder, 10-12 parts of polyethylene glycol, 2-4 parts of glutinous rice flour, 8-10 parts of poly-3-hydroxybutyrate, 0.1-0.2 part of zinc sulfate, 0.1-0.2 part of manganese sulfate, 0.1-0.2 part of potassium chloride and 0.2-0.5 part of ferrous sulfate. When the sewage purifying agent is prepared, the modified attapulgite and other components and raw materials contained in a formula are sufficiently mixed, granulated and packaged. The sewage purifying agent provided by the invention has the advantages of sewage purifying and sterilizing effect and long residual action.

The invention relates to a preparation method and application of zwitterion water gel dressing. According to the preparation method, zwitterion monomers, cross linking agents, initiators, sodium chloride and distilled water are uniformly mixed according to the ingredient content; a glass slide is used for preparing templates; a polyfluortetraethylene pad is clamped between two glass slides, and a gap is then formed there; gauze is cut into the proper size to be clamped between the glass slides; then, a uniformly mixed reaction solution is dripped into the template gap; through crosslinking reaction, the zwitterion water gel modified gauze dressing can be obtained. Identically, during the preparation of a zwitterion water gel woundplast, the zwitterion water gel modified woundplast dressing can be obtained through the crosslinking reaction. The water gel dressing provided by the invention has the advantages that the water content is high, so that the wound is in a moist environment; meanwhile, the water absorption capability is high, and the secreted body fluid can be absorbed at any time, so that no excessive pyema exists in the wound position; high biocompatibility is realized; the problems of skin allergy inflammation and the like cannot be caused; the fast heeling of the wound can be promoted.

The invention relates to the field of household appliances, in particular to a washing machine provided with an ultra-fine bubble generating device. The washing machine comprises a case body and an outer tub installed in the case body, wherein an inner tub is rotatably arranged in the outer tub, at least one ultra-fine bubble generating device is arranged between the case body and the outer tub, a gas-liquid mixing outlet of each ultra-fine bubble generating device is communicated with the outer tub, ultra-fine bubbles produced by the ultra-fine bubble generating device enter washing body through the gas-liquid mixing outlet to make a washing agent fully dissolved. The washing ratio of clothes is improved, meanwhile pollutant discharge is reduced, and environmental pollution is reduced.

The invention discloses a finishing method for a textile with ultraviolet-resisting and antibacterial functions. The finishing method comprises the following steps: step (10), preparing a zinc oxide / carboxymethyl chitosan nano compound; step (20), pre-treating the textile with a cold plasma method; and step (30), preparing the zinc oxide / carboxymethyl chitosan nano compound prepared by the step (10) into a zinc oxide / carboxymethyl chitosan nano compound solution, and immersing the textile pre-treated by the step (20) with the solution; and adding an acrylic ester binding agent and adopting a rolling baking process to obtain the treated textile. The textile prepared by the finishing method has good ultraviolet-resisting and antibacterial functions.

The invention discloses an aquatic product sterilizing pre-treating and cold-preserving method. The method comprises the steps of: firstly, washing an aquatic product by cold water to remove dirt and impurities; secondly, soaking the washed aquatic product in sub-acid electrolysed water or stirring for sterilization; placing the sterilized aquatic product in a foam preservation box and covering the sterilized aquatic product with preservation ice; and finally sealing the box. By using the method, the spoilage caused by microorganism pollution can be effectively restrained and the shelf life of the aquatic product can be prolonged; the preservation ice can be used for lowering the temperature and slowing down a series of biochemical reactions of the aquatic product; the water formed by melted ice during storage and transportation can play a further sterilization role; the sub-acid electrolysed water has a broad spectrum and high-efficient sterilization effect and especially can be reduced to water after reacting with organic matters; compared with the current other sterilizing agents, the sub-acid electrolysed water is safe without residues and is friendly to human bodies and environments; and the sub-acid electrolysed water is moderate in reacting functions and hardly has influences to the quality of meat. The method is not only applicable to preservation of fresh foods such as fish, shrimps and shellfish, but also applicable to the preservation field of meat products.

A method for preparing the germinated embryo rice from non-glutinous rice includes such steps as spreading said rice to become thin layer, immersing in water, germinating, passivating in the water at 70-100 deg.C, washing, and antistaling packing or drying including hot air baking and microwave drying. Its apparatus is composed of container with openable cover or door, and rice spreading unit.

The invention relates to a preparation method of preserved rice noodles. The preparation method includes the steps of rice machining and sand filtration, smashing, humidity adjustment, extrusion for gelatinization, extrusion for emerging of silk noodles, cutting off, checking and packaging. The preparation method is characterized by taking the rice noodles before extrusion for emerging of silk noodle and drying as materials, wherein the water content of the rice noodles at the moment is 25wt%-30wt% and the temperature is 40-60 DEG C; cutting the rice noodles to 17-19cm; soaking the rice noodles for 60-100min in Didazuril bactericide solution with concentration of 50%-60% and temperature of 35-45 DEG C, wherein the ratio of material to liquid is 1wt%:5wt%; conducting vacuum packaging, wherein the vacuum degree is 0.09MPa-0.092Mpa; thermally sterilizing the rice noodles for 0.5h-1h in a water bath maintained at the temperature of 90-95 DEG C; cooling packaging bags with circulating cold water so as to fast reduce the temperature in the center of the packaged material to 30-35 5 DEG C; blowing the water at the outer surfaces of the packaging bags to dry; checking whether the packaging bags bulge and break and conducing metal detection; putting the rice noodles together with auxiliary materials such as matched sauce bags in a packaging box; and sealing the packaging box, thus obtaining a finished product. For the preserved rice noodles produced according to the preparation method, the water content is higher than 60% and the quality guarantee period is longer than 6 months; the infusing and dispersing performance is good; caking does not happen and undesirable odor does not emerge; the dissolving starch rate of the rice noodles is low; after culture for 1 month at the temperature of 37 DEG C, the rice noodles achieve 1426g of hardness, 26.14gs of crisp performance, 512 of viscosity, 0.513s of viscoelasticity.

The invention relates to a bean dregs dietary fiber superfine powder and a preparation method thereof. The present invention uses wet ultrafine grinding and extrusion technology to process fresh bean dregs in time and process soybean dietary fiber powder in one step, that is, to obtain bean dregs meal by heating bean dregs to eliminate enzymes, remove fishy smell, grind, homogenize, extrude, and dry. Fiber micropowder. The present invention integrates the preparation of bean dregs dietary fiber and the modification of dietary fiber into one process, which simplifies the process; the process adopts all physical treatment methods, which avoids the safety caused by residues of additives or the impact on product composition. Negative effects and other issues, and no by-products, can realize the simultaneous completion of resource utilization and environmental protection. Compared with ordinary soybean dregs dietary fiber powder, the product of the present invention has enhanced function, improved taste and color, and passivated factors causing bad flavor, and is widely used in the fields of food and health food.

The invention discloses health-care wine and a preparation method thereof. The health-care wine comprises distilled spirit and a Chinese herbal medicine composition, wherein the Chinese herbal medicine composition contains 36 types of Chinese herbal medicines, is subjected to digestion and fermentation and then is soaked in the distilled spirit, the active ingredients in the Chinese herbal medicines can be completely dissolved in the distilled spirit to ensure that the health-care wine is soft in effect of medication and mellow in mouthfeel, are favorable for enhancing the microcirculation and strengthening the function of internal organs, and enhance the elasticity of blood vessels at the same time to ensure that the blood viscosity is gradually reduced; the healthcare wine has the effects of relieving the rigidity of muscles and activating collaterals, promoting the blood circulation to remove the blood stasis, replenishing qi and nourishing blood, invigorating qi and replenishing essence, regulating the microcirculation, regulating the function of the internal organs, and strengthening bones and the body.

The invention relates to a process for manufacturing tenacity nourishing chewing gum for pet dogs comprising, immersing the livestock skin particles with clean water at normal temperature, charging water immersed particles, water and gelatin into a kneading machine, heating-up for softening and kneading, gelatination kneading at constant temperature, high temperature sterilization and kneading, cooling for stabilizing and kneading, adding various seasoning and nourishing constitutions simultaneously, charging glycerine thermal insulation agent, squeezing at constant temperature, and packaging.

The invention discloses a germinated whole grain and a preparation method thereof, and belongs to the technical field of deep processing of grains. The whole grain is subjected to ultrasonic washing, high-voltage pulsed electric field treatment, biological enzymolysis or combined high-voltage pulsed electric field and biological enzymolysis treatment in a soaking process, and a segmented soaking and germination manner for germination is adopted, so that the sensory quality, germination yield and quality of a germinated whole grain product are improved, and germination loss is reduced. The preparation method is simple, low in soaking and germination temperature, short in cycle, energy-saving and environment-friendly. The content of functional, nutritional and bioactive substances in the germinated whole grain product is remarkably increased, and food safety is remarkably improved. For example, for brown rice, germinated brown rice prepared by the preparation method has gamma-aminobutyric acid content of 303.8 to 312.6 mg / 100 g, glutathione content of 16.8 to 18.3 mg / 100 g, IP6 content of 460.8 to 484.4 mg / 100 g and dietary fiber content of 3.5 to 3.6 mg / 100 g.

The invention discloses a chicken soup and a preparation method thereof. The soup is prepared by boiling raw materials which comprise tender chicken, ginseng, red dates and medlar together with Astragalus mongholicus, Poria cocos, shallot, ginger, pepper, anise, cayenne pepper and salt. The preparation method comprises the steps of washing ginseng, red dates and medlar, soaking in hot water, pre-treating the tender chicken, putting the dosing and the pre-treated tender chicken into a pan, adding water to boil, taking out the boiled tender chicken and cooling, taking out the raw materials, filtering, packing the boiled tender chicken, soup and soaked ginseng, red dates and medlar, sterilizing in three sections, checking and enchasing the qualified packaged soup. The soup of the invention tastes fresh and is convenient to eat, is full of nutriments, and has the functions of benefiting the five internal organs, tonifying spleen and stomach, tonifying heart and soothing the nerves.

The invention discloses a coating antistaling agent for food. The coating antistaling agent is composed of the following components by mass: 5.0 to 10.0% of grape seed essential oil or fennel essential oil, 0.5 to 3.0% of ginger extract and 5.0 to 10.0% of glycerol monocaprylate or hydrophilic laurin, with the balance being a zein film raw material, wherein the mass percents of the above-mentioned components sum to 100%. The invention also discloses a preparation method for the coating antistaling agent used for food. The coating antistaling agent can effectively delay food oxidation, inhibit moisture evaporation, exert bactericidal effect, prolong the shelf life of food and reduce cost and is an edible coating antistaling agent without toxicity and pollution.

The invention discloses a method for preparing hawthorn fruit vinegar beverage by continuously fermenting various mixed strains. The method comprises the following steps: (1) preparing materials; (2) carrying out vacuum leach and enzymolysis; (3) carrying out alcoholic fermentation: inoculating saccharomycetes into leaching solution and fermenting for 10 days at temperature of 25-32 DEG C; (4) carrying out lactobacillus fermentation: inoculating lactobacilli into fermented liquid after the alcoholic fermentation and ending the lactobacillus fermentation at the temperature of 37-40 DEG C when the alcoholic strength is 6-8%; (5) carrying out acetic fermentation: inoculating bacillus aceticus AS1.41 and fermenting for 72-84 hours at the fermentation temperature of 30 DEG C; and (6) sequentially cleaning, blending, homogenizing and sterilizing to acquire the hawthorn fruit vinegar beverage. The hawthorn fruit vinegar beverage prepared through the method is red and brown in color and properly sweet and sour; the hawthorn fruit vinegar beverage has excellent flavor and taste of flavor substances on basis of keeping original nutrient substances; meanwhile, continuous fermentation can be carried out and the production efficiency is high.

The invention belongs to the technical field of nano-silver antibacterial gel, and discloses a preparation method and application of nano-silver antibacterial gel with chitosan-poloxamer as the gel matrix. The nano-silver antibacterial gel is characterized by being prepared through the following specific steps of adding poloxamer to a silver nitrate aqueous solution to be evenly stirred, adding trisodium citrate, irradiating the mixture with ultraviolet light after even stirring to obtain a nano-silver stock solution, adding a glacial acetic acid solution and glycerol to the nano-silver stock solution to be evenly stirred, adding poloxamer and chitosan to obtain nano-silver chitosan-poloxamer sol, regulating pH, and standing to make the mixture gelated to obtain the nano-silver antibacterial gel. According to the gel, chemical crosslinking is replaced with physical crosslinking, the problem that because harmful chemical reagents and other cross-linking agents are introduced, cytotoxicity rises is avoided, nano-silver is introduced by using chitosan and poloxamer in a combined mode as a carrier, the gel is stable and low in toxicity, and the gel can be applied to scalded wound surfaces and has great benefits for prognosis and outcome of patients.

The invention discloses pH (Potential of Hydrogen) response antibacterial peptide as well as a preparation method and application thereof. The invention firstly provides the antibacterial peptide witha simple amino acid sequence and the amino acid sequence only comprises hydrophilic lysine and hydrophobic leucine, but has key factors with an antibacterial effect of natural antibacterial peptide:positive charge, a hydrophobic domain, amphipathy, alpha helix secondary conformation and the like; the end part of the antibacterial peptide is simply modified and the bioactivity of the antibacterial peptide can be maintained; and meanwhile, the biocompatibility is improved. According to the pH response antibacterial peptide provided by the invention, an acid response molecule is modified on anantibacterial polypeptide chain, and the polypeptide can have a sterilization effect in a slightly-acidic environment of a bacterial infection part and also has the effect of reducing the toxicity ofthe antibacterial peptide on mammalian cells in a physiological environment.

The present invention provides a kind of root canal filling paste with calcium phosphate bone cement as main material and capable of being stored at certain conditions without change in property and capable of being injected. The root canal filling paste consists of solid powder and curing liquid, the solid powder includes calcium phosphate powder and developing agent, and the curing liquid contains humectant, thickener, coagulant and water. The root canal filling paste compounded with the solid powder and the curing liquid is stored in an injector, and when it is used, the injector with root canal filling paste is set in the air for minutes for the paste to raise its temperature before being injected to root canal. The injected paste will solidify fast to convert into high strength hydroxyapatite. The present invention has less operation steps, shortened surgical operation period and raised root canal treating quality.

The invention relates to a preparation method of nano-grade silver antibiotic fabric. The method comprises the steps that: (1) under a temperature of 35-45 DEG C, nano-grade silver micro-particles are added to polyurethane and water; the mixture is stirred; a microcapsule solution is added to the mixture; the mixture is stirred, and an emulsion is obtained; stirring is continued; a dispersant, an adhesive and a softening agent are sequentially added, such that a nano-grade silver microcapsule finishing agent is obtained; (2) yarn is processed by using the nano-grade silver microcapsule finishing agent; pre-baking and shaping baking are carried out, and yarn with the nano-grade silver microcapsule is obtained; (3) the yarn with the nano-grade silver microcapsule is adopted as middle-layer weft yarn, and three-layered fabric is obtained by weaving. A pre-shaping locking treatment is carried out, such that the nano-grade silver antibiotic fabric is obtained. The preparation method provided by the invention is simple; the nano-grade silver microcapsule finishing agent is applied on the yarn, and comfortableness of the fabric is not influenced. According to the invention, the yarn with the nano-grade silver microcapsule is positioned in the middle layer of the three-layered fabric, and does not contact human body or external environment directly. Therefore, the fabric is safe and environment-friendly.

The invention relates to a preparation method of millet germinated brown rice rich in gamma-aminobutyric acid. The preparation method comprises the following steps of firstly, hulling millets, removing millet husks, mainlining millet bran and germs to obtain millet brown rice, and cleaning the millet brown rice by subacidity electrolyzed water with available chlorine of 5-300ppm so as to obtain cleaned millet brown rice; 2) soaking the cleaned millet brown rice into a CaCl2 culture liquid for 8-12 hours, removing a soaking liquid, sprouting out of the sun, and culturing for 48-72 hours; and 3) carrying out enzyme deactivation and drying treatment on the millet brown rice after germination culture so as to obtain millet germinated brown rice. The method provided by the invention can be used for effectively controlling the microorganism pollution in the germination process, is high in germination rate and is short in germination time; the enrichment degree of nutritional components in the millet germinated brown rice obtained after germination can reach 126.60mg / 100g, and is a novel functional food and an ideal whole-grain food.

The invention belongs to the technical field of medical instruments and provides an auxiliary relaxation instrument used in surgical suturing. The auxiliary relaxation instrument is of a rounded cuboid and includes a relaxation layer (1), an adsorbed layer (2), stitching holes (3) and observing holes (4), wherein the relaxation layer (1) is arranged on the adsorbed layer (2), and the relaxation layer (1) and the adsorbed layer (2) are closely combined; the stitching holes (3) and the observing holes (4) penetrate through the relaxation layer (1) and the adsorbed layer (2); the stitching holes (3) are arranged in two rows and are symmetrical in a left-right mode. According to the auxiliary relaxation instrument, in the fully intradermal suturing process of a wound, the skin relaxation suture technology is simplified, and meanwhile moderate pressure is exerted on the wound to reduce bleeding. Therefore, it is guaranteed that the distances between stitches are equal in the manual interrupted suturing process, scar hypertrophy and suture cutting effects due to overlarge skin tension are prevented, and finally the skin relaxation instrument achieves the purposes of accelerating wound closure, bringing convenience to wound dressing change and wound observation and preventing the scar hypertrophy.

The invention belongs to the field of drying of agricultural products, and particularly relates to a method for drying apple pieces by a nitrogen source low-oxygen heat pump. The method comprises the following steps of cutting applies into pieces after the apples are selected, peeled and seeded, performing color protection, shape fixation, blanching and draining, drying the apple pieces in a nitrogen source heat pump dryer, drying the apple pieces in a vacuum drying box, and sealing and storing the apple pieces. According to the method, the drying energy consumption is reduced, the drying efficiency is improved, and the shortcomings of low drying efficiency and long drying time in the later drying period of heat pump drying are overcome; the apple pieces are subjected to heat pump drying and vacuum low-temperature drying after the color protection and blanching treatment, so that the problems of reduction of the gloss of the apple pieces and changes in colors are effectively solved; phenolic substances in the apples can be prevented from being oxidized to generate quinone, the oxidation loss of vitamin C can be reduced, the color and the texture of the apple pieces can be prevented from being damaged by an oxidation effect in a drying process, and dry products with natural colors can be obtained.

The invention relates to an anti-acne cosmetics composition and a facial mask containing the same. The anti-acne cosmetics composition and the facial mask mainly comprise the following components: dicotyledon medicinal cruciferae plant extract, pearl powder, sulfur, calamine, mint, borneol, a surfactant, a adhesive and other additives, have the advantages of high efficiency, safety, enduring efficacy and the like, are simple in preparation process, can effectively realize acne elimination and multiplex sterilization, can radically cure acne in a short time, and can be widely applied in the technical fields of cosmetology and medicine.

The invention discloses a photocatalyst and a preparing method thereof. The photocatalyst is prepared from, by weight, 78-85 parts of nanometer titania, 8-15 parts of nanosilicon dioxide, 0.5-2.5 parts of cerium and lanthanum composite rare earth material and 1-4.5 parts of nanometer silver-zinc antibacterial agent. The preparing method includes the steps of preparing titanium dioxide sol, preparing silicon dioxide sol, mixing the titanium dioxide sol and the silicon dioxide sol, preparing the cerium and lanthanum composite rare earth material, preparing the nanometer silver-zinc antibacterial agent, adding the nanometer silver-zinc antibacterial agent and the cerium and lanthanum composite rare earth material and conducting ageing, drying, grinding and sintering. The photocatalyst is applied in building materials, is adsorbed to the surface of an object to form a stable coating according to the nanometer characteristic of the solidified photocatalyst, effectively restrains bacteria and purifies air and is long lasting in effect and not corrosive to the building materials. It is found through research that the antibacterial performance of the photocatalyst can be easily improved due to the doping of rare earth elements and the nanometer silver-zinc antibacterial agent.

The invention relates to a preparation method of a flavor base material containing abundant umami peptide. The preparation method comprises the following steps: firstly evenly mixing vegetable protein with distilled water, and then heating the obtained mixed solution at the temperature of 100-121 DEG C for 15-30 minutes; adjusting the corresponding pH value and temperature range, and then adding a proper amount of protease and monomer amino acid; and hydrolyzing until the hydrolysis degree reaches 6%-12%, heating to 85-95 DEG C, keeping the temperature for 15-30 minutes, and filtering to obtain peanut meal hydrolysis supernate. In the preparation method, after the raw materials are pretreated, tasty amino acid in the obtained vegetable protein enzymolysis liquid is reversely regulated and controlled through the monomer amino acid to finally obtain the flavor base material containing the abundant umami peptide, thus the method is applicable to large-scale production.

A method for cleaning air features that the ultraviolet ray, ozone, microwave, photocatalytic degradation and adsorptive filter are integrated for removing bacteria and degradating toxic and harmful organic substances. Its apparatus is composed of microwave generator and detoxicating unit. Said detoxicating unit consists of casing, more partition layers made of activated layer, inlet filter, ultraviolet light source and fan.

The invention discloses an anti-freezing disease prevention film agent for trees as well as a preparation method and the application thereof. The anti-freezing disease prevention film agent consists of main ingredients and water, wherein the main ingredients comprise the following components in part by mass: 200-1,100 parts of film-forming material, 1-100 parts of 2-methyl-isothiazolin-3-ketone, 0.033-3.3 parts of 5-chlorine-2-methyl-4-isothiazolin-3-ketone, 10-80 parts of dimethyl sulfoxide and 10-80 parts of ethylene glycol; and the film-forming material is a or b, wherein a is chitosan, and b is chitosan and carboxymethyl cellulose. The anti-freezing disease prevention film agent for trees can take a better control effect on frozen damages caused by low temperature, wind, ice nucleating bacteria and the like, is suitable for frost prevention and overwinter protection of sapling stems and branches of poplars, hybrid hazelnut trees, apple trees and other trees, as well as late spring cold prevention, cytospora chrysosperma prevention and canker prevention after blossom of apricot trees, pear trees and the like in early spring, and wound surface protection after scraping of scabs.

The invention discloses a green and environment-friendly fruit vegetable preservative. The preservative is prepared from, by weight, 0.1-0.3 part of plant extract, 1-3 parts of chitosan, 1-3 parts of organic acid additive, 0.5-0.9 part of nanometer additive, 0.4-0.6 part of polyamino acid, 0.8-1.4 parts of polysorbate, 0.05-0.07 part of silane coupling agent, 20-30 parts of ethanol and 30-50 parts of water. The green and environment-friendly fruit vegetable preservative can prolong the storage period of fruits and vegetables, lower the rotting rate and the loss rate, has a very good inhibiting effect on pathogenic bacteria which easily occur in the storage process after the fruits and vegetables are harvested, has a certain inhibitory effect on rots after the fruits and vegetables are harvested, has a very good preservation effect on the harvested fruits and vegetables, improves the quality of the fruits and vegetables, and prolongs the shelf life of the fruits and vegetables, meanwhile, raw material components adopted by the preservative are safe, reliable and harmless to the human body, and the preservative is convenient to use and green and environmentally friendly, is low in cost, simple in technology, and has high practical value and a good application prospect.

The invention discloses a special fertilizer for wampee and a preparation method of the special fertilizer. The special fertilizer is prepared from the following ingredients in parts by weight: 20 to 25 parts of urea, 10 to 12 parts of diammonium phosphate, 16 to 18 parts of potassium sulphate, 1 to 1.5 parts of slaked lime, 0.5 to 1 part of magnesium sulfate, 1 to 1.5 parts of potassium sulphate, 1 to 1.5 parts of boracic acid, 0.01 to 0.1 parts of citric acid chelated zinc, 0.01 to 0.1 parts of copper sulfate, 0.01 to 0.1 parts of manganese sulfate heptahydrate, 0.01 to 0.1 parts of sodium molybdate, 0.01 to 0.1 parts of ferric trichloride, 0.1 to 0.2 parts of amino acid chelated selenium, 5 to 8 parts of disinfection insecticide, 4 to 6 parts of crop straw, 5 to 8 parts of thoroughly decomposed animal excrement and 3 to 5 parts of peanut hull powder. The special fertilizer has the advantages that the proportion content is reasonable; medium-element calcium, magnesium and sulphur fertilizers, trace-element boron, zinc, copper, manganese, molybdenum and ferrum fertilizers and amino acid chelated selenium fertilizers are contained; meanwhile, the sterilization pesticide, the crop straws, the thoroughly decomposed animal excrement and the peanut hull powder are contained; the effect of eliminating plant diseases and insect pests for fruit trees is achieved; rich nutrition ingredients are also provided for wampee fruit trees; in addition, the utilization rate of the fertilizer is improved; wide development prospects and good economic benefits are realized.

The invention provides a biochar slow release base fertilizer special for wheat. The biochar slow release base fertilizer comprises a core layer and a coating layer coating the surface of the core layer. The core layer is made by mixing of the following raw materials by weight part: 30-40 of biochar, 10-15 of urea, 30-35 of potassium dihydrogen phosphate, 15-20 of potassium chloride, 30-40 of weathered coal, 0.2-0.6 of a botanical fungicide, 3-5 of abamectin dreg, 5-8 of vermiculite powder, and 0.2-0.5 of a fertilizer additive, and the weight of the core layer accounts for 50%-60% of the total weight of the slow release fertilizer. The coating layer is a mixture of biochar powder and a binder, and the weight of the coating layer accounts for 40%-50% of the total weight of the slow release fertilizer. The fertilizer provided by the invention has nutrients released slowly under control, one-time fertilization can meet the need of crops for fertilizer in the whole growth period, and the fertilizer dosage is reduced, thus effectively preventing pollution of the fertilizer to the environment. And the fertilizer provided by the invention can improve soil and increase wheat yield.

The invention relates to a protoporphyrin fluorescent carbon dot, and a preparation method and application thereof. The preparation method comprises the following concrete steps: reacting protoporphyrin with polyethyleneimine (PEI) at 170 to 220 DEG C for 7 to 10 h; and then successively carrying out cooling, dialysis and filtering so as to obtain the protoporphyrin fluorescent carbon dot. The protoporphyrin fluorescent carbon dot prepared in the invention has good water solubility and maintains the intact properties of protoporphyrin; photodynamic effect produced by a porphyrin photosensitizer can effectively inactivate yeast cells, so bactericidal effect is exerted; and the preparation method has the advantages of simple reaction steps, mild reaction conditions, small danger, low toxicity, etc.