2165 results about "Water soluble" patented technology

An automatic dishwashing detergent water-soluble pouch includes a water-soluble film that forms at least two separate chambers that are enclosed by water-soluble film. The separate chambers are: a first chamber; and a second chamber. The first chamber is connected to the second chamber by a linking portion of water-soluble film, the length of the linking portion of water-soluble film between the first chamber and second chamber is at least 0.5 cm, and the first chamber and second chamber include detergent ingredients.

An automatic dishwashing detergent water-soluble pouch includes a water-soluble film that forms at least two separate chambers that are enclosed by water-soluble film. The separate chambers include a first chamber and a second chamber. The first chamber is connected to the second chamber by a linking portion of water-soluble film, and a length of the linking portion of water-soluble film between the first chamber and second chamber is at least 1.2 cm. The first and second chambers include detergent ingredients.

The invention discloses a synthetic method of a water soluble ultraviolet light absorber BP-9. The method mainly comprises the following process steps: (1) carrying out methylation on the main raw materials of 2, 2', 4, 4'-tetrahydroxyl benzophenone, a transition metal salt catalyst and a mixed solvent which is prepared from dichloroethane and anhydrous ethanol in equal parts by weight to obtain 2, 2'-dihydroxyl-4, 4'-dimethoxyl benzophenone; (2) carrying out sulfonation reaction on the main raw materials of methylate, sulfamic acid and C1-C3 halohydrocarbon to obtain 2, 2'-dihydroxyl-4, 4'-dimethoxyl benzophenone-5, 5'-disulfonic acid; and (3) carrying out neutral reaction on the main raw materials of sulfonated product, inorganic base and ethanol water to finally obtain the BP-9 product. The synthetic method disclosed by the invention is few in reaction step, low in cost, high in product purity and stable in quality, and raw materials are easily available.

The invention provides a method for detecting the porosity of in-situ dump-leached ore, and belongs to the technical field of ore porosity detection. The method comprises the following steps: taking an ore body on site, preparing a filling agent, performing vacuum gradient impregnation, curing, dissolving and separating the ore to obtain a pore model; melting and softening the pore model to obtain the pore volume in the ore, and finally obtaining the porosity of the ore; wherein nano SiO2 is added into the filler resin, and permeation of tiny pores is guaranteed based on the size effect and the interface optimization effect of a nano material; and through vacuum gradient impregnation, sufficient permeation of tiny pores is further ensured. According to the detection method, the limitation of a drainage method on ore pores containing water-soluble minerals is avoided; the problems that ore samples need to be collected and taken back to a laboratory to be detected in a mercury injection method, a gas adsorption method and the like, the ore body structure is damaged, and consumed time is long are solved. Detection can be carried out on site, ore permeability parameters are provided for the in-situ dump leaching process, and a real-time basis is provided for flow selection.

A male cap can include a male tapered outer surface that can be configured to mate with a female luer to create a fluid tight fit. The male cap can also include a water-soluble antimicrobial composition disposed on the male extension. The male cap can include a fluid-soluble, slower-dissolving material covering the water-soluble antimicrobial composition or incorporated within the water-soluble antimicrobial composition. The slower-dissolving material can be configured to slow a dissolution of the water-soluble antimicrobial composition during installation of the male cap into the female luer.

The invention relates to the technical field of microorganisms, and particularly discloses a fermentation method of bifidobacterium longum BBMN68 as well as a fermented product, a postbiotic and application of the fermented product. According to the method for fermenting the bifidobacterium longum BBMN68, a fermentation substrate comprises alkaline protease hydrolyzed milk and a pomelo peel extract; the hydrolysis rate of the alkaline protease hydrolyzed milk is 9-11%, and the water-soluble dietary fiber content of the shaddock peel extract is 75-80%; the mass ratio of the alkaline protease hydrolyzed milk to the shaddock peel extract is (10-15): (1-3). The content of active ingredients in the fermented product prepared by the method is high, and after the fermented product is prepared into the postbiotics to be taken, the immune function of an organism can be recovered, immune organ damage is reduced, inflammation is relieved, and intestinal flora is regulated and controlled.

The invention belongs to the technical field of cosmetic efficacy evaluation, and discloses a sunscreen efficacy evaluation method and application thereof, and the method comprises the following steps: building a blank group; establishing a model group; establishing a sample group; performing constant-temperature incubation on the blank group, the model group and the sample group for a first period of time, recording a swimming track, and calculating swimming distance increment and after-sun burning pain relieving efficiency of each group of zebrafish; performing constant-temperature incubation on the blank group, the model group and the sample group for a second duration, recording the tail fin and dorsal fin area of the zebra fish, and calculating the sunburn prevention efficiency; performing constant-temperature incubation on the blank group, the model group and the sample group for a third period of time, recording the head melanin area of the zebra fish, and calculating the anti-sunburn efficiency; and grading the sunscreen effect of the sample. The method disclosed by the invention has the advantages of low cost, short test period, high reproducibility, high visualization degree, intuitive and understandable test result and the like, and can be used for accurately grading the sunscreen effects of chemical sunscreen agents, water-soluble sunscreen cosmetics and raw materials thereof from the whole animal level.

The invention discloses a method for detecting organic carbon components in soil based on gas chromatography-mass spectrometry, and particularly relates to the technical field of soil detection. The method comprises the following steps: pretreating fresh soil to obtain a fresh soil sample and an air-dried soil sample, respectively extracting organic carbon components to obtain a DOC extracting solution and an LOC extracting solution, and sequentially and respectively carrying out purification treatment, concentration treatment and derivatization on the DOC extracting solution and the LOC extracting solution to obtain a DOC to-be-detected solution and an LOC to-be-detected solution; respectively detecting the DOC to-be-detected liquid and the LOC to-be-detected liquid in a GC-MS instrument to obtain a total ion flow chromatogram, and carrying out qualitative and quantitative analysis to obtain organic carbon component data. Through step-by-step extraction, selective derivatization and GC-MS accurate analysis, molecular level separation, identification and quantification of water-soluble organic carbon DOC and oxidizable organic carbon LOC in soil are achieved, the method is particularly suitable for evaluating contribution of carbohydrate, amino acid and organic acid to the carbon turnover rate, and the method is good in selectivity and high in sensitivity.

The invention discloses a high-valued graded utilization method of marine shells, and belongs to the technical field of comprehensive utilization of biological resources and preparation of functional materials. The method comprises the following steps: cleaning, air-drying and superfine grinding marine shell wastes such as abalone shells, and extracting water-soluble organic components in the marine shell wastes by adopting mild water extraction, so that the obtained extract is rich in protein, polysaccharide or small molecule peptide, has good biological activity, and can be used for preparing functional materials such as biomimetic mineralization, tissue repair and the like; extracted shell powder residues are subjected to heat treatment or chemical activation treatment and then compounded with natural polymer materials such as chitosan and sodium alginate, and the composite adsorbent which is loose in structure and large in specific surface area is prepared and can be used for removing dye, heavy metal, antibiotics and other water pollutants. According to the invention, separate utilization of organic components and inorganic framework materials in the marine shells is realized, and the method has the characteristics of environmental protection, efficient resource conversion and multifunctional application, and has a good industrial popularization prospect.

The invention discloses an online component detection method and system based on a salvia miltiorrhiza extracting solution chromatography elution process, and relates to the technical field of traditional Chinese medicine quality control. The method comprises the following steps: carrying out an elution experiment on a salvia miltiorrhiza extracting solution based on a column chromatography technology to obtain a sample set; acquiring near infrared spectrum and ultraviolet visible spectrum data in the sample; matching a spectrum fusion model according to the type of the to-be-detected component, and constructing different spectrum fusion models based on different fusion strategies for the near infrared spectrum and the ultraviolet visible spectrum; and processing data of the near infrared spectrum and the ultraviolet visible spectrum by using different spectrum fusion models to obtain the content of the to-be-detected component. On the basis of NIRS and UV-Vis technologies, online detection and analysis are carried out in the elution process of the salvia miltiorrhiza extracting solution by adopting a spectrum fusion and water spectrum omics method, and dynamic tracking and intelligent terminal point judgment of the salvia miltiorrhiza water-soluble active ingredients are realized.

The present disclosure provides a preparation method for a light-colored water-soluble vegetable protein. The method comprises: adding protease and glucose oxidase into a vegetable protein solution for enzymolysis to obtain a water-soluble vegetable protein. The method effectively reduces browning reactions in the enzymolysis process, not only lightening the color, but also ensuring that the yield of polypeptide products remains undiminished.

Disclosed are novel pharmaceutical, animal feed compositions and methods of treating non-human animals comprising at least one component selected from the extract(s), fraction(s), active compound(s) and phytochemical(s), or mixtures thereof, derived from non-woody plants of the genus Hesperaloe. Animal feed compositions may comprise a basal animal feed and water soluble solids extracted from Hesperaloe and comprising at least one saponin. The water soluble solids may comprise from about 5 to about 30 wt % saponin. The compositions of the present invention can be used for the treatment of non-human animals, such as poultry and more particularly for preventing and treating coccidiosis. An embodiment provides an immunological composition useful for inducing the production of antibodies to an antigen in a non-human animal comprising an antigen, preferably a coccidia, and a saponin composition extracted from Hesperaloe. The saponins extracted from Hesperaloe biomass may comprise 25(27)-dehydrofucreastatin, 5(6),25(27)-disdehydroyuccaloiside C, 5(6)-disdehydroyuccaloiside C, furcreastatin and yuccaloiside C.

The invention provides a marking coating capable of preventing normal-temperature layering and a preparation method of the marking coating, and belongs to the technical field of coatings. Comprising the following raw materials in parts by weight: 1-2 parts of a temperature-sensitive reversible cross-linking agent, 15-30 parts of epoxy resin, 10-20 parts of an acrylic monomer, 1-2 parts of an emulsifier, 2-4 parts of temperature-sensitive microcapsules, 0.5-1 part of nano titanium dioxide, 1-2 parts of inorganic asbestos fibers, 0.5-1.5 parts of polymer fibers, 0.01-0.02 part of an initiator, 3-4 parts of a water-soluble epoxy curing agent, 2-3 parts of hollow glass beads, 2-4 parts of an auxiliary agent and 40-80 parts of water. The marking paint has the temperature-sensitive characteristic, is a weak gel network at normal temperature, inhibits filler sedimentation, hydrogen bond fracture during construction heating, paint fluidity recovery and cooling recovery crosslinking, and has high strength and hardness, so that the tensile strength, bending strength, hardness and other mechanical properties of a paint film are remarkably improved, and the wear resistance and impact resistance are also enhanced.

The invention relates to the technical field of agricultural biology, in particular to water-fertilizer integrated water-soluble fertilizer for cotton and a preparation method. Compound amino acid, a humic acid-fulvic acid compound, a medium trace element chelating system, a zinc-graphene compound, an alginate oligosaccharide-gamma-aminobutyric acid compound, a compound microbial agent, nano titanium dioxide, sodium 2-naphthoxyacetate and a soil conditioner are scientifically proportioned; the water-soluble fertilizer with multiple functions of comprehensive nutrient supply, biological stimulation, soil improvement and the like is prepared. In the preparation process, a spray freeze drying technology is adopted to ensure that the retention rate of active ingredients is greater than or equal to 95%, and then twin-screw extrusion granulation and screening are performed to finally obtain the fertilizer. In this way, the technical problem that in the prior art, the fertilizer only pays attention to providing basic major elements such as nitrogen, phosphorus and potassium, and neglects the important effect of microelements on cotton growth, so that the requirement of modern cotton planting for fertilizer multifunctionality is difficult to meet is solved.

The invention relates to the technical field of agricultural application of nano materials, and discloses a preparation method and application of a photosynthetic accelerant containing carbon quantum dots. Urea and citric acid are adopted as raw materials, and the nitrogen-carbon molar ratio and hydrothermal reaction parameters are optimized, so that efficient doping of nitrogen and accurate regulation and control of the particle size are achieved, and the photosynthetic accelerant containing the carbon quantum dots is obtained. The nitrogen-doped carbon quantum dot photosynthetic promoter with excellent upconversion performance is successfully synthesized, the promoter has good water solubility and biocompatibility, the photosynthetic efficiency of plants can be greatly improved within the concentration range of 0-100 mg / L, a safe application window is defined, and by establishing foliage spraying and water planting dual-mode application specifications, the application range of the nitrogen-doped carbon quantum dot photosynthetic promoter is widened, and the application range of the nitrogen-doped carbon quantum dot photosynthetic promoter is widened. The problems that current crops are insufficient in solar spectrum utilization and low in light energy conversion efficiency are solved in a targeted manner by utilizing an ultraviolet light-photosynthetically active radiation conversion function mediated by the carbon quantum dots and combining the targeted enrichment permeation characteristic of the carbon quantum dots in chloroplast.

The invention relates to the technical field of water-soluble fertilizers, in particular to a water-soluble organic fertilizer and a preparation method and application thereof.The water-soluble organic fertilizer is prepared from, by mass, 40-100 parts of basic organic raw materials, 5-15 parts of microbial fermentation additives, 10-20 parts of nutrient element supplements and 3-7 parts of synergists; the microbial fermentation additive comprises a compound microbial agent and a microbial growth carrier, the nutrient element supplement comprises a nitrogenous fertilizer, a phosphatic fertilizer, a potash fertilizer and medium trace elements, and the synergist comprises fulvic acid and alginic acid. According to the water-soluble organic fertilizer and the preparation method and application thereof, efficient utilization and accurate supply of nutrients are achieved, the growth requirements of crops in plant factories are met, meanwhile, resource utilization of organic waste is promoted, and sustainable development of the plant factories is promoted.

The invention discloses a plant-sourced anti-allergy soothing composition and application thereof, and belongs to the field of cosmetic processing.The plant-sourced anti-allergy soothing composition is prepared from hydrolyzed corn starch, saururus chinensis extract, carrot root extract and water-soluble hesperidin. Active ingredients of plant sources are deeply studied, and the anti-allergy soothing composition has the advantages that the plant-sourced anti-allergy soothing composition is prepared from the hydrolyzed corn starch, the saururus chinensis extract, the carrot root extract and the water-soluble hesperidin; a series of plant extracts with a synergistic effect are screened out, the plant-source multi-dimensional composition for relieving itching and repairing red is successfully researched and developed, and through the synergistic effect of the hydrolyzed corn starch, the saururus chinensis extract, the carrot root extract and the water-soluble hesperidin, the composition has the effects of relieving and repairing skin in a multi-dimensional mode, relieving itching and repairing red. In addition, the composition can repair the skin barrier for a long time and improve the tolerance of the skin, and meanwhile, the composition has good safety and stability and is suitable for various skin types, especially sensitive skin.

The invention relates to a microcapsule slow-release pesticide fertilizer and a preparation method and application thereof.The microcapsule slow-release pesticide fertilizer comprises a capsule core and a capsule wall, materials of the capsule core comprise water-soluble pesticide and fertilizer, materials of the capsule wall comprise silicon dioxide and calcium carbonate, the mass ratio of the silicon dioxide to the calcium carbonate is 0.7: 1-1.6: 1, the median particle size of the microcapsule slow-release pesticide fertilizer is 0.5-5 micrometers, and the median particle size of the microcapsule slow-release pesticide fertilizer is 0.5-2 micrometers. And the surface potential is-30 mV to-52 mV. The microcapsule slow-release pesticide fertilizer not only has excellent slow-release performance, environmental adaptability and environmental friendliness, but also is high in stability, good in dispersity and long in lasting period, so that the utilization rate of the pesticide fertilizer and the disease resistance of crops can be remarkably improved, meanwhile, an acid-base catalyst is not needed in the preparation process, the process is simple, and the production cost is low.

The invention provides dust-free antibacterial deodorant bentonite cat litter and a preparation method thereof, and belongs to the technical field of cat litter. Firstly, a certain amount of sodium bentonite, baking soda and calcium carbonate are used for preparing bentonite cat litter, then polyvinyl alcohol and sodium carboxymethyl cellulose which have the film forming property, polyhexamethylene guanidine hydrochloride which has the bactericidal property and soybean ethyl sulfate morpholine which has the deodorization function are used for preparing the bentonite cat litter; the components are compounded to obtain a functional dust suppressant with antibacterial, deodorant and film-forming effects, the functional dust suppressant is sprayed and coated on the surface layer of the bentonite cat litter, so that the prepared dust-free antibacterial and deodorant bentonite cat litter is remarkable in deodorant and antibacterial effects and good in wear resistance, and a layer of water-soluble film is formed on the surface of the dust suppressant after the functional dust suppressant is sprayed for dust suppression treatment, so that the dust suppression effect is good. The bentonite cat litter has the advantages that the structure and the film-forming property of the surface layer of the bentonite cat litter are improved, the hardness and the wear resistance of the surface are improved, the dust suppression effect of the cat litter is obviously improved, dust is extremely low under simulated falling and transportation conditions, and the cat litter has excellent water absorption and caking performance.

The utility model discloses a trapping device and trapping extraction equipment for water-soluble components in atmosphere, the trapping device comprises an enrichment assembly, a turntable, a second driving unit and a third driving unit, the turntable comprises a plurality of support plates, the tail ends of the support plates clamp a filter membrane through a clamping assembly, and when the second driving unit drives the filter membrane to rotate to the enrichment assembly, the filter membrane is separated from the enrichment assembly. The enrichment assembly can enrich soluble components flowing through the atmosphere on the filter membrane; the clamping assembly comprises a lower cover and an upper cover, the lower cover is fixedly connected with the supporting plate in the lateral direction, and the upper cover is arranged in the lower cover in a sleeved mode so that the filter membrane can be flatly pressed on an annular flange on the inner wall face of the lower cover. The trapping and extracting equipment comprises a movable seat, an elution assembly, a first driving unit and the trapping device. The device is reasonable in structure, convenient to use and favorable for improving the enrichment uniformity of soluble substances on the filter membrane.

A fluorescence intensity enhancer containing a water-soluble compound having a melting point of 50 DEG C or higher, a method for enhancing the fluorescence intensity of a fluorescently labeled target biological substance using the fluorescence intensity enhancer, and a fluorescence detection kit containing the fluorescence intensity enhancer.

The invention relates to the technical field of agricultural biology, and discloses a microbial agent for preventing and treating fructus aurantii scab and a preparation method of the microbial agent. The microbial agent comprises the following raw materials in percentage by weight: 10-13% of paenibacillus mucilaginosus; 15%-20% of trichoderma sp. 7%-10% of paecilomyces lilacinus; 5%-8% of bacillus pumilus; 7%-9% of mycorrhizal fungi; 5%-8% of streptomyces; 5%-9% of a coptis chinensis extract; 4%-7% of a sophora flavescens extract; 2%-4% of realgar; 1%-3% of a rheum officinale extract; 10%-13% of soybean meal; 5%-8% of a water-soluble fertilizer; 7%-9% of potassium fulvate; 1%-3% of chitosan; 0.5%-1% of trace elements; 3%-8% of humic acid; the raw materials are subjected to microbial flora amplification culture, plant antibacterial component light-shielding mixing and low-temperature mixing to effectively protect the microbial activity of the microbial agent, and step-by-step operation can avoid damage of high temperature and mechanical shearing to microorganisms, so that the microbial activity of the microbial agent is effectively protected. And the loss of microbial active ingredients is reduced by vacuum drying and low-temperature granulation processes.

The invention discloses a cape jasmine and fennel compound extract and a preparation method and application thereof, and belongs to the technical field of plant extracts.The preparation method of the cape jasmine and fennel compound extract comprises the steps that S1, a cape jasmine extract is prepared; s2, preparing a fennel extract; s3, the fennel extract and the fructus gardeniae extract are mixed according to a certain proportion to obtain the fructus gardeniae and fennel compound extract, the fennel extract prepared through the preparation method comprises an oil component and a water-soluble component, the compound extract achieves the effect of 1 + 1 > 2, has the remarkable effect of reducing blood fat and blood sugar, does not have side effects, and is suitable for large-scale popularization and application. The traditional Chinese medicine composition has an obvious regulating effect on blood pressure and blood fat of patients, has the efficacy of improving blood pressure, blood fat and blood sugar of patients, and is nontoxic and harmless to human bodies and free of side effects.

A vegetable plug seedling precision planting and sowing production line system comprises a conveying module used for production line transmission and plug conveying; the soil paving module is used for paving nutrient soil in the hole tray; the hole pressing module is used for pressing and forming holes in the surface soil of the soil-containing hole tray; the dibble seeding module is used for dibble seeding vegetable seeds to holes one by one according to the specifications of the hole trays; the soil covering module is used for filling and flattening holes in the hole / seed containing hole tray; the spraying module is used for spraying a water-soluble nutrient solution to the soil on the surface layer of the hole tray after soil covering; by combining the planting environment characteristics and seedling raising process requirements of modern agricultural greenhouses, core links such as soil paving, hole pressing, dibble seeding, soil covering, fertilization and watering are integrated into the same production line system, efficient cultivation and automatic production of vegetable hole trays are achieved, and then precision planting and seeding and assembly line work of vegetable hole tray seedlings are achieved.

The invention belongs to the technical field of oil displacement of oil fields, and particularly relates to a molecular dynamics simulation method for substitution and adsorption characteristics of an oil-water interface. The simulation method is provided through substitution and adsorption of water-soluble chemical agent molecules to oil-phase active molecules on an oil-water interface, after a water-soluble chemical agent molecular model is added to a first target cubic box, molecular dynamic equilibrium simulation is carried out on a system, and the water-soluble chemical agent molecular model is obtained. Hydrophobic groups in the water-soluble chemical agent molecular model are inserted into an oil molecule cubic box due to hydrophobicity, and hydrophilic groups are substituted and adsorbed with water molecules at an oil-water interface. Molecular dynamics simulation is carried out on the water-soluble chemical agent by adjusting the type and concentration of the water-soluble chemical agent and factors such as temperature and pressure of a simulation environment, so that the competition efficiency of the water-soluble chemical agent is improved; by analyzing the interaction between the water-soluble chemical agent and the oil-phase active component and the water, the action strength between the water-soluble chemical agent and the oil-phase active component and the water is evaluated on the microscopic level, and the action mechanism of the substitution adsorption behavior is revealed.

The invention discloses a phosphogypsum harmless treatment system which comprises a phosphogypsum conveying belt scale, a moisture content detector, a phosphogypsum storage bin, a powder bin, a powder conveyor, an anionic polymer liquid bin, anionic polymer liquid conveying equipment, a water distribution device, a spraying device, a stirrer and a control module. According to the present invention, the mixing ratio can be intelligently and automatically adjusted and controlled according to the initial water content of phosphogypsum, and the amount of the powder material, the amount of the anionic polymer liquid and the amount of the water are output; the powder, the anionic polymer liquid and the water diluent cooperate with one another, so that harmless treatment of the ardealite is realized; the acidity of the ardealite is reduced, the pH value is increased, the content of water-soluble fluorine and total phosphorus is reduced, the industrial solid waste standard is met, and harmless treatment of the ardealite with the annual yield of 1 million tons is achieved.

The invention provides a preparation method of a film-forming enhancer for water-based drilling fluid, which is characterized by comprising the following steps: A) mixing a phenolic compound, water and inorganic base, adjusting the pH value, adding a silicon reagent, and reacting to obtain a first reaction solution; b) mixing phenol, formaldehyde, a sulfonating reagent and the first reaction solution, and reacting to obtain a second reaction solution; c) mixing the second reaction solution with water to obtain a diluent, and reacting to obtain a third reaction solution; and cooling and drying the third reaction liquid to obtain the product. The film-forming enhancer is silicon-modified sulfonated phenolic resin and is prepared by reacting water-soluble silicate with phenols, formaldehyde, a sulfonic acid reagent and inorganic base at high temperature and high pressure. The film-forming enhancer provided by the invention can effectively improve the performance of a drilling fluid system, improve the quality of a mud cake and control the high-temperature and high-pressure filter loss, has a good reservoir protection effect, and forms a new technology integrating well wall stabilization, leakage prevention and stoppage, formation pressure bearing improvement and reservoir protection; and the requirements of slim hole drilling well wall stability, safe drilling and reservoir protection can be met.

The invention provides an anti-blocking agent composition for a fully water-soluble fertilizer. The anti-blocking agent composition comprises the following raw materials in parts by weight: 20-80 parts of a surfactant, 1-10 parts of an inorganic active separant, 1-5 parts of an organic nutritional agent and 1-5 parts of an inorganic nutritional agent. The invention also provides an application of the anti-blocking agent composition in preparation of a fully water-soluble fertilizer, and also provides the fully water-soluble fertilizer. The anti-blocking agent composition has the advantages that through the synergistic effect of the surfactant and the inorganic active separant, the anti-blocking performance of the anti-blocking agent composition is remarkably improved; meanwhile, the addition of the organic nutritional agent and the inorganic nutritional agent in the composition does not influence the water solubility of the fully water-soluble fertilizer and can also supplement nutrition; therefore, the composition provided by the invention can effectively solve the caking problem of the fully water-soluble fertilizer, is adaptive to diversified fertilization scenes, and has good practical application value.

The invention discloses a method for preparing acid sophorolipid, and belongs to the technical field of biological fermentation. According to the method, candida is used as a fermentation strain, a composite carbon source culture medium containing a water-soluble carbon source and an oil-soluble carbon source is adopted, and the content of residual oil is monitored in real time in the fermentation process; when the residual oil content exceeds a threshold value of 5g / L, the emulsifying agent of 0.1 g / L-0. 5g / L is supplemented, and the stirring rotating speed is increased by 20-50rpm, so that the emulsification of an oil phase and the utilization of the thalli on the oil-soluble carbon source are promoted. By accurately controlling the residual oil content in the fermentation process, the proportion of the acidic sophorolipid and the carbon source conversion rate are remarkably increased, the proportion of the acidic sophorolipid is increased to 60% from 30% of a traditional process, the carbon source conversion rate is increased to 65% from 40%, the problems that the increasing means of the proportion of the acidic sophorolipid is single, and the carbon source is wasted are effectively solved, and the method is suitable for industrial production. The method has the advantages of simple process, low cost, environmental protection and the like.

The invention belongs to the technical field of dust suppressants, and particularly relates to a biomass-based dust suppressant as well as a preparation method and application thereof. The biomass-based material comprises a micron-sized structure and a nano-sized structure distributed on the micron-sized structure. After the dust suppressant is sprayed on the surface layer of minerals such as coal, the dust suppression mechanism is changed according to the change of the water content, and when the water content is high, the dust suppressant can adhere to coal dust to suppress flying of the coal dust; when water volatilizes, the micro-nano biomass material or the water-soluble cellulose derivative can spontaneously assemble into a film, and the dried dust suppressant has a complete film-forming structure, certain strength, wind erosion resistance and strong affinity with coal, so that the long-time dust suppression capability of the dust suppressant can be ensured.