154 results about "Bacteriocidal Agents" patented technology

The invention relates to the technical field of sewage treatment, in particular to a preparation method of a degradable bactericide for an oil field. According to the invention, a hydroxypropyl guanidine gum-polycaprolactone-ethylenediamine fragment copolymer is taken as a carrier, a methylisothiazolinone quaternary ammonium salt (Q-MIT) bactericide is loaded, and the degradable bactericide for the oil field is obtained by cooperating with a dodecyl ethyl sulfide (TC-SE) bactericide and combining with sodium polyaspartate. A carrier forms a hydrogen bond with a polar group on the surface of a biological membrane through a hydroxypropyl guanidine gum main chain to realize targeted anchoring, a polycaprolactone branched chain encapsulates Q-MIT through a hydrophobic effect, primary amino groups of ethylenediamine are introduced to form a pH sensitive Schiff base bond with Q-MIT, and the primary amino groups and adipic dihydrazide form a thermal response hydrazide bond to construct a dual dynamic covalent bond, so that controlled release of Q-MIT is realized, and the biomembrane is prepared. And moreover, the components of the whole system are connected through degradable chemical bonds, so that the environmental protection property and sustainability of oil field operation are guaranteed.

The application discloses application of 5,8,11-eicosatrienoic acid in prevention and treatment of plant fungal diseases and belongs to the field of pesticide chemistry. The 5,8,11-eicosatrienoic acid mainly prevents and treats diseases caused by the oomycete class capsicum phytophthora, the compound is a long-chain unsaturated fatty acid, has an antifungal disease effect and can be used as a fungicide to prevent and treat plant diseases. The compound can effectively prevent pathogenic bacteria from invading plants by inhibiting mycelium growth, enhancing cell membrane permeability and interfering with the spore sac release process, and is further used for preventing and treating huge plant fungal diseases. Biological tests show that the compound has a significant concentration-dependent inhibitory effect on the mycelium growth of the capsicum phytophthora, and the half effective inhibitory concentration (EC50) is 60.2 µg / mL. At a concentration of 200 µg / mL, the inhibition rate is more than 83%, the 5,8,11-eicosatrienoic acid can effectively inhibit the release of the capsicum phytophthora spore sac, and the EC50 is 156.3 µg / mL. At a concentration of 200 µg / mL, the inhibition rate is morethan 77%.

The invention relates to the field of agricultural bactericides, in particular to a suspending agent containing fenaminstrobin and validamycin A and application of the suspending agent. The bactericidal composition comprises a suspending agent containing fenaminstrobin and validamycin A, an active component, a stabilizer, an auxiliary agent and water, the active component accounts for 1-70% of the mass of the preparation, and the stabilizer accounts for 0.1-10% of the mass of the preparation; wherein the active ingredients are fenaminstrobin and validamycin A, and the stabilizer is meglumine (N-methyl-D-glucosamine). The suspending agent prepared by the technical scheme of the invention effectively inhibits the increase of the particle size of a sample in the thermal storage process of a preparation, effectively improves the suspension rate of fenaminstrobin after the thermal storage of the preparation, improves the utilization rate of a pesticide, and ensures the normal exertion of the efficacy of the pesticide at the same time. Meanwhile, the quality of the active components of the stabilizer-containing bactericide is stable within the shelf life, the addition of the stabilizer does not cause the decomposition of the active components, and the preparation does not have obvious physical or chemical change.

A living paint comprises a living photosynthetic microorganism, binder, growth medium, and water. The microorganism may comprise algae, cyanobacteria, or lichens. The binder may be composed of primary

The invention relates to antibacterial and mildew-proof leather sponge with silver ions, which comprises the following components in parts by weight: 60-80 parts of ethylene vinyl acetate and 1-5 parts of foaming agent. The leather comprises the following components in parts by weight: 40-60 parts of polyester modified MD I, 10-20 parts of a silver ion antibacterial agent, 1-3 parts of a plasticizer, 15-25 parts of a bactericide, 1-2 parts of a mildew preventive, 1-3 parts of sponge glue, 3-5 parts of a cross-linking agent, 0.5-0.6 part of a catalyst, 40-50 parts of a leather body, 1-2 parts of leather softening enzyme and 1-2 parts of a leather adhesive. According to the antibacterial and mildew-proof leather sponge with the silver ions and the preparation method, when sponge leather is prepared, due to the excellent antibacterial performance of the silver ions, the silver ions are in contact reaction with cells, inherent components of bacteria are damaged or functional obstacles are generated, and bacterial death is caused, meanwhile, the leather sponge can be prevented from mildewing in cooperation with the mildew preventive, and the antibacterial and mildew-proof effects are achieved. The leather sponge has the antibacterial and mildew-proof functions, and the use experience of a user is improved.

The invention discloses a bacteriophage capable of efficiently splitting Pseudomonas ongdamura and a composition and application thereof, the bacteriophage is Pseudomonas ongdamura bacteriophage PL1P1, the preservation number is CCTCCM20251191, the Pseudomonas ongdamura bacteriophage PL1P1 is a virulent bacteriophage separated from the nature, and the Pseudomonas ongdamura bacteriophage PL1P1 has relatively high tolerance to ultraviolet rays and pH, and can be used for efficiently splitting Pseudomonas ongdamura and Pseudomonas ongdamura and Pseudomonas ongdamura. The bacteriophage is suitable for different prevention and treatment environments and can achieve a good fresh-keeping effect on chilled meat, DNA of the bacteriophage cannot encode protein possibly causing potential health risks, the possibility of carrying lysogenic genes does not exist, the bacteriophage has high affinity and splitting capacity, the titer of 10 < 10 > PFU / mL or above can be achieved within 24 h of culture, and the bacteriophage has good application prospects. The Pseudomonas longdamura phage PL1P1 can specifically partially or completely inactivate Pseudomonas longdamura, can complete mass proliferation only by using a small amount of initial phage, and provides a high-quality phage strain source for industrial production of phage bactericides.

The compound shown in the formula (I) has good activity to various pathogenic bacteria in agriculture or other fields. Moreover, the compound can obtain good prevention and treatment effect at a very low dose, and thus can be used for preparing a fungicide. In addition, the compound has simple preparation steps and high yield, and thus has good application prospect.

The invention belongs to the technical field of marine corrosion and protection, and discloses an antibacterial peptide for marine corrosion prevention and fouling prevention and application of the antibacterial peptide, the sequence of the antibacterial peptide is H-NIle-NVal-NLys-NLU-NPhe-NLU-NTyr-NArg-NSer-NTrp-NLU-NHis-NLU-NLU-NIle-NH2, the antibacterial and preservative effects of common corrosion inhibition bactericides such as quaternary ammonium salts, organic guanidines and aldehydes can be effectively enhanced, and the antibacterial peptide can be applied to marine corrosion prevention and fouling prevention. The generation of a corrosive biological membrane and the microbial corrosion rate can be effectively inhibited, the dosage of a bactericide can be reduced by 60% or above, and continuous antibacterial and anticorrosion for 30 days can be realized.

The use of an LtPCL6 protein and a gene encoding same in regulating pathogenicity, mycelial growth, and stress resistance of Lasiodiplodia theobromae. The gene encoding LtPCL6 protein is derived from Lasiodiplodia theobromae, and a knockout mutant is obtained by constructing a knockout fragment of a Lasiodiplodia theobromae LtPCL6 gene, and introducing same into a Lasiodiplodia theobromae protoplast. Experiments indicate that the LtPCL6 gene has an effect in the growth, cell wall and cell membrane integrity, and stress resistance of Lasiodiplodia theobromae, and significantly reduces the pathogenicity of the Lasiodiplodia theobromae with regard to a host. Therefore, the LtPCL6, serving as a fungicide target and a key protein of a pathogenic mechanism of diseases, can be used for developing agents for diseases caused by Lasiodiplodia theobromae infection and breeding new resistant varieties, and has broad application prospects in the control of plant pathogenic fungal diseases.

The invention belongs to the technical field of pesticides, and relates to 11 bactericide compositions for mainly preventing and treating crop diseases caused by pyricularia oryzae and colletotrichum gloeosporioides. The compound YJY-22 provided by the invention is novel in structure and unique in action mode, and has no cross resistance with isoprothiolane, fenoxanil, pyraclostrobin, tricyclazole, azoxystrobin, mancozeb, captan, difenoconazole, prochloraz, chlorothalonil and tebuconazole. As the action mechanism of the compound YJY-22 is different from that of the medicament, and the compound YJY-22 and the medicament have no cross resistance, the compound YJY-22 and the medicament are compounded, so that the sterilization range can be expanded, the sterilization effect can be enhanced, the drug resistance of phytopathogen can be delayed, the safety to crops is good, the prevention and control spectrum is expanded, and the requirements of pesticide reduction and synergism are met.

The present application relates to the technical field of pesticides, and discloses a chromene aryl hydrazide derivative, a preparation method and application thereof, a structural general formula of the chromene aryl hyydrazide derivative is as formula (I); the preparation method is as follows: taking p-hydroxybenzaldehyde as raw material, and obtaining the chromene aryl hydrazide compound through substitution reaction, cyclization reaction, oxidation reaction, acylation reaction and hydrazinolysis reaction. The chromene aryl hydrazide compound is used for preparing an agricultural bacteriostatic agent. The present application combines aryl hydrazine and chromene skeleton by using the pharmacophore splicing principle in medicinal chemistry, and designs and synthesizes a series of chromene aryl hydrazide compounds. The bacteriostatic activity test result shows that the compounds have excellent bacteriostatic activity, and can be used as active ingredients for preparing a plant pathogenic fungus fungicide.

The application discloses a method for treating hydrogen sulfide in oil wells, which comprises the following steps: (1) screening of test oil reservoir; (2) preparation of specific virulent SRB phage stock solution; (3) enrichment of specific virulent SRB phage; (4) determination of optimal titer of specific virulent SRB phage solution; (5) selection of phage fusion bactericide; (6) determination of optimal intervention point of bactericide; (7) field test and effect evaluation. The application has the following advantages: (1) wide adaptability, simple method and good operability; (2) strong pertinence; (3) phage bactericidal action can prevent the generation of bacterial drug resistance and can prolong the use time of bactericide; (4) the cost is reduced by more than 50% compared with the prior art; meanwhile, the damage of bactericide toxicity to the formation is reduced, and the method is economic and environment-friendly.

The invention discloses a quinolinic acid diaryl ether derivative, a preparation method and application thereof and a bacteriostatic agent or bactericide, relates to the technical field of medicinal chemistry, solves the problems that existing pesticides are high in toxicity and not environmentally friendly, easily cause drug resistance of pathogenic bacteria and possibly have negative effects on the environment and an ecological system, can efficiently prevent and treat fungal diseases of plants, and also can effectively prevent and treat the pathogenic bacteria of the plants. The quinolinic acid diarylether derivative has the advantages that the quinolinic acid diarylether derivative has excellent inhibition activity on agricultural fungi such as rhizoctonia solani, sclerotinia sclerotiorum, botrytis cinerea, fusarium graminearum and fusarium pseudograminearum, and the quinolinic acid diarylether derivative has the characteristics of simple synthesis process, cheap and easily available raw materials, good control effect, wide bactericidal spectrum and the like.

The application discloses a kind of two-component fungicide containing fluoximide, effective component includes fluoximide and propiconazole, and the weight ratio of fluoximide and propiconazole is 1 :(0.2-3).The application has good control effect on banana leaf spot disease, and is safe to banana, can delay the process of drug resistance of drug resistance;And the combination of aryl phenol polyoxyethylene ether and fatty alcohol polyoxyethylene ether is used as emulsifying agent, and the prepared pesticide microemulsion has good stability and short foaming time.Fluoximide and propiconazole mixed preparation have good synergistic effect, can reduce the amount of drug, delay and control the drug resistance of pathogenic bacteria, and also make the mixed preparation have protection, treatment and internal absorption, realize the purpose of taking long and short, complementary advantages, expand the control spectrum and use range.

This present invention is directed to antimicrobial fabric care compositions that provide detersive benefits such as stain and soil removal and aesthetic benefits like softening, wrinkle-reduction and color-protection and when used discretely or synergistically during the laundry program reduce the risk of infections and promote health and hygiene by providing dose-dependent antimicrobial activities such as sanitizing, disinfecting and removing malodors from fabrics, and imparting 24-48 hour antimicrobial-durability into fabrics, and deactivating biofilms inside the washing machine and preventing biofilm formation inside the washing machine to prevent recontamination of fabrics. The compositions are well-suited for use in domestic, commercial and on-premise-laundry-operations such as healthcare facilities, hotels, cruise ships, and the like. Methods for discrete and synergistic uses to simultaneously treat fabrics and the internal surfaces of the washing machine are also disclosed.

The invention discloses a water control type workover fluid and a preparation method thereof. The water control type workover fluid is prepared from the following components in parts by weight: 2 parts of a clay stabilizer, 0.2-1 part of a high-temperature chelating agent, 0.5-1 part of a corrosion inhibition bactericide, 1-2 parts of a waterproof locking agent, 5 parts of a phase change agent and 100 parts of filtered seawater. The method comprises the following steps: filtering the filtered seawater until suspended particles are less than 30 microns in standard value, sequentially adding a clay stabilizer, a high-temperature chelating agent, a corrosion inhibition bactericide, a water blocking prevention agent and a phase change agent, and uniformly stirring to obtain the water control type workover fluid. After the workover fluid enters a reservoir, the oil phase starting pressure can be reduced, the oil-water interfacial tension can be reduced, the effect of inhibiting water content rising after well workover is achieved, the workover fluid can be matched with different field operation types, and the recovery period of an oil well can be shortened.

The invention relates to the technical field of detergent compositions, and discloses a preparation method of a seaweed extract composite disinfecting and killing detergent composition, which comprises the following steps: under temperature-controlled stirring, mixing alkyl glycoside and a quaternary ammonium salt cationic bactericide according to a specific molar ratio and a free water content of less than 55% to construct a high-viscosity water-deficient lamellar liquid crystal shielding phase; the shielding phase is immersed and injected into a seaweed extract substrate solution, shearing dispersion is performed at a specific rate to obtain the composition, a metastable-state water-deficient layered liquid crystal structure is constructed, the cationic bactericide and the anionic seaweed extract are physically isolated through the steric hindrance effect at the mixing moment, flocculation caused by charge confrontation is effectively blocked, and the stability of the composition is improved. Thermodynamically stable coexistence and functional compatibility of the two in a single water phase system are realized, and the bactericidal activity can be released during dilution use.

The invention belongs to the technical field of plant disease control, and particularly relates to a method for controlling root rot of cardamine violifolia. The technical problem to be solved by the invention is to clarify the pathogenic bacteria of cardamine violifolia and provide a new choice for preventing and treating cardamine violifolia root rot. The invention also provides a method for preventing and treating the root rot of cardamine violifolia. The method comprises the following step: treating the cardamine violifolia by adopting at least one of hymexazol (T1), oxaconazole (T2) and propiconazole (T9). According to the application, the key pathogenic bacteria of the root rot of the Enshi cardamine violifolia are determined to be Aspergillus Goddavidii (A2), Mucor circinelloides Luusitanius variant (A3) and Blumeria tuberosa (A6) for the first time. According to the invention, bactericides, namely propiconazole, hymexazol and oxadiazole, which have a remarkable inhibition effect on three pathogenic bacteria are screened from nine conventional bactericides, and the mixed use effect of propiconazole, hymexazol and oxadiazole is better; a new scheme is provided for preventing and treating the root rot of cardamine violifolia.

The application discloses application of a small G protein regulator VdRasGAP of Verticillium dahliae in resisting cotton verticillium wilt, and provides application of inhibition of expression and / or activity of the VdRasGAP protein in any of the following aspects: (A1) reducing pathogenicity of the Verticillium dahliae; (A2) resisting plant verticillium wilt caused by the Verticillium dahliae infection. The application lays a theoretical foundation for in-depth research on pathogenic mechanism of the Verticillium dahliae, provides a new theoretical basis and an effective target for efficient prevention and treatment of the cotton verticillium wilt, and lays a foundation for further development of a new type of target fungicide.

The invention discloses an emulsified cutting fluid using a plant extract as a bactericide. The emulsified cutting fluid is prepared from the following raw materials in parts by weight: 15-28 parts of base oil 1, 25-28 parts of base oil 2, 8-16 parts of an oil-soluble antirust agent, 10-19 parts of an emulsifier, 0.0-0.6 part of an antioxidant, 2-4 parts of an emulsion stabilizer and 3-5 parts of the plant extract bactericide, the base oil 1 is 150SN or transformer oil, the base oil 2 is naphthenic mineral oil, and the plant extract bactericide is a mixture of malus hupehensis extract, wolf thorn extract and melia azedarach extract. The special plant extract bactericide can effectively inhibit bacteria, fungi and anaerobic bacteria, has a broad-spectrum bactericidal effect, has good compatibility and emulsification stability, does not produce layering, turbidity and foam, does not destroy the uniformity and lubrication performance of the cutting fluid, can significantly reduce the skin irritation risk when workers contact the cutting fluid, and has a good application prospect. And the biodegradability is good, the biodegradability is easy to decompose by microorganisms in the natural environment, and the goal of'zero emission 'is favorably realized.

The invention discloses a botanical fungicide for metal working fluid, which is prepared from the following raw materials in parts by weight: malus hupehensis extract, wolf thorn extract and melia azedarach extract according to the mass ratio of 1: (2-4): (2-4). The bactericide is natural in raw materials, can effectively inhibit bacteria, fungi and anaerobic bacteria, has a broad-spectrum bactericidal effect, is good in stability, can effectively avoid the problem of spoilage of the metal working fluid, is good in compatibility with the metal working fluid, is not liable to generate a precipitation reaction with other additives in the working fluid, is not liable to generate drug resistance, and is safe and reliable. The skin irritation risk when workers make contact with the disinfectant can be remarkably reduced, the disinfectant has good biodegradability, is easily decomposed by microorganisms in the natural environment, does not leave lasting chemical residues like traditional bactericides, and is beneficial to achieving the zero emission target.

Disclosed in the present invention is the use of a threonine dehydratase in the regulation of the growth of Didymella segeticola and as a bactericide target. The threonine dehydratase gene Td of the present invention is derived from Didymella segeticola, and a knockout mutant is obtained by means of constructing a knockout gene fragment targeting the Td gene and then introducing same into a D. segeticola protoplast. Experiments find that the Td gene plays a role in the growth, the in-vivo pyruvic acid content and the in-vivo ATP content of D. segeticola, and the sensitivity thereof to wuyiencin. By means of molecular docking analysis, molecular dynamics simulation and microscale thermophoresis experiments, it is verified that threonine dehydratase can be used as a bactericide target, and the bactericide wuyiencin is obtained by means of screening. The threonine dehydratase of the present invention can be used as a bactericide target and a key protein in the pathogenic mechanism of a disease, and has broad application prospects in the control of plant pathogenic fungal diseases.

A container sterilization method, a container sterilization device, and a content filling system. The container sterilization method of the present invention has: a conveying step of conveying a container (100) having a mouth portion (110) filled with a content; a nozzle insertion step of inserting a nozzle (90) for spraying a sterilizing agent into the container (100) being conveyed; and a sterilizing agent supply step of supplying the sterilizing agent to the container (100) into which the nozzle (90) is inserted. In the nozzle insertion step, the inside of the container (100) is made to be slightly positive by inserting the nozzle (90) into the container (100).

The present invention relates to a method for decontaminating the inner surface (26) of the neck (18) of a thermoplastic preform (12) passing sequentially along a production path (34) in a container manufacturing facility (10), each preform (12) being held by a separate holding member (58, 66), the decontamination method comprising: at least one treatment step (E1) including, within a first treatment zone (56) of the production path (34), exposing at least the inner surface (26) of the neck (18) to a bactericidal jet (54) containing a bactericide; at least one bactericide activation step (E2) including, within a second activation zone (62) of the production path (34) located downstream of the treatment zone (56), directly exposing the inner surface (26) of the neck (18) thus covered with bactericide to ultraviolet radiation (61), the power of which is about 30 mW / cm², to decompose the bactericide into more oxidizing substances, such as free radicals.

The invention discloses an Escherichia coli bacteriophage D9, a bacteriophage composition and application thereof, the preservation number of the Escherichia coli bacteriophage D9 is CGMCC (China General Microbiological Culture Collection Center) NO. 46365, and the Escherichia coli bacteriophage D9 is preserved in China General Microbiological Culture Collection Center on January 2, 2025, and the preservation address is No.3, No.1 Yard, Beichen West Road, Chaoyang District, Beijing. The bacteriophage composition comprises an escherichia coli bacteriophage D9 and other bacteriophages. The coliphage D9 has better high-temperature resistance and acid resistance, is high in breeding speed, is suitable for industrial production, has excellent splitting performance on multiple strains of multi-drug-resistant clinical escherichia coli, can be used as an active ingredient of a biological bactericide, a pharmaceutical preparation or a disinfectant, and has a wide application prospect. The compound is applied to the aspects of sterilization, bacteriostasis and disinfection of multi-drug-resistant escherichia coli, treatment or prevention of infectious diseases caused by escherichia coli and the like.

The present invention relates to pyridazine-4-yl oxadiazine compounds and their use for controlling harmful microorganisms such as phytopathogenic oomycetes and fungi.

The present invention provides a Bacillus strain, a biocontrol microbial agent prepared from the bacillus strain, and a use thereof. The Bacillus strain provided in the present invention is Bacillus subtilis, named QY2, for which the deposition institution is the China General Microbiological Culture Collection Center, the deposition address is the Institute of Microbiology, Chinese Academy of Sciences, No. 1 Beichen West Road, Chaoyang District, Beijing, the deposition center number is CGMCC No. 31373, and the deposition time is 19 July 2024. The Bacillus stain QY2 of the present invention, whether in the form of viable bacteria, a supernatant, or a cell lysate, exhibits inhibitory effects on various pathogens. The Bacillus stain QY2 has strong viability, wide applicability in terms of nutrient sources, temperature, humidity, and pH, no pathogenicity to fruits and vegetables, and relatively good tolerance to broad-spectrum microbicides.

The application provides a kind of 3, 4-dichloroisothiazole benzamide derivatives and preparation method and purposes thereof, specifically relates to a kind of derivatives, and the chemical structure general formula is seen formula I: the application discloses the general formula of the structure of the above compound, synthesis method and as insecticide, acaricide, fungicide, anti-plant virus agent, plant activator purposes, it is combined with agricultural acceptable adjuvant or synergist and with commercial insecticide, acaricide, fungicide, anti-plant virus agent, plant immune activator in the prevention and treatment of agricultural, forestry, horticultural plant pest, mite damage, disease, viral disease purposes and preparation method.

Provided are: a biofilm bactericide composition which has excellent bactericidal activity against bacteria present in a biofilm adhering to a target article, particularly a fibrous product; and a method for sterilizing a biofilm using the composition. This biofilm fungicide composition contains the following component (a) and component (b): component (a): one or more compounds selected from the group consisting of (a1) quaternary ammonium salts having a long-chain alkyl group represented by general formula (a1) and (a2) bipyridinium compounds; component (b): an anionic surfactant comprising one or more compounds selected from the group consisting of (b1) anionic surfactants represented by general formula (b1) and (b2) internal olefin sulfonates having 14-20 carbon atoms (inclusive).