17 results about "Kasugamycin" patented technology

The invention relates to the technical field of pesticides, and particularly discloses a biopesticide containing kasugamycin and application of the biopesticide containing kasugamycin. The preparation method comprises the following steps: obtaining a seed solution, fermenting, acidifying, adsorbing and separating, concentrating and crystallizing, and grinding kasugamycin, an auxiliary agent and water in a mass ratio of (3-4): (1-1.5): (4.5-6) to obtain the biological pesticide containing kasugamycin. The biopesticide containing kasugamycin provided by the invention is environment-friendly and safe, accurate in target and not easy to generate drug resistance, and can meet green agricultural requirements.

The invention discloses preparation and application of furoic acid and a bactericidal composition thereof, and relates to the technical field of biopesticides, the furoic acid comprises furoic acid, the chemical structural formula of the furoic acid is shown in the specification, the purity is greater than or equal to 98%, and the furoic acid is prepared by the following steps: mixing furfural, a sodium hydroxide aqueous solution and copper oxide, introducing oxygen at 50-60 DEG C, stirring and reacting for 4-6 hours, and filtering to obtain a filtrate; extracting, acidifying, recrystallizing and drying to obtain furoic acid; according to the preparation and application of the furoic acid and the bactericidal composition thereof, the furoic acid with a specific structure is scientifically compounded with screened specific biopesticides (kasugamycin, boscalid and ningnanmycin), and the ratio range (for example, the ratio of furoic acid to kasugamycin is 1: 10-10: 1) with a remarkable synergistic effect is optimized and determined; according to the composition disclosed by the invention, the components are effectively complemented on the action mechanism, and the defects that the traditional single pesticide is single in action target and easy to induce drug resistance are overcome, so that the overall control effect of the composition on various plant diseases (including bacteria, fungi and virus diseases) is remarkably improved.

This invention relates to a compound antibacterial agent and its application in open plant tissue culture. The active ingredients of the compound antibacterial agent include rifampin, kasugamycin, ticarcillin sodium clavulanic acid, and tetrachloroisophthalonitrile. The compound antibacterial agent can synergistically inhibit Agrobacterium rhizogenes or Rhodotorula glutinis, contaminating bacteria that are easily generated during plant tissue culture.

This invention relates to a nano-suspension containing thiazolium zinc and kasugamycin, wherein the mass ratio of thiazolium zinc to kasugamycin in the suspension is 7:1, and the particle size D90 of the suspension is 0.40 μm to 0.80 μm. The nano-suspension is prepared by thoroughly mixing thiazolium zinc technical, kasugamycin technical, necessary suspending agents, and water, followed by sand milling. In the suspension containing thiazolium zinc and kasugamycin prepared by this invention, the decomposition rate of kasugamycin is lower, and it is suitable for maintaining a low decomposition rate for extended periods in harsh environments.

The application discloses a microbial source bactericidal composition containing Leuconostoc mesenteroides WZ-44 and kasugamycin and application thereof. The bactericidal composition takes Leuconostoc mesenteroides WZ-44 fermentation liquor (or fermentation sterile filtrate) and kasugamycin as main effective components, wherein the mass ratio of the Leuconostoc mesenteroides WZ-44 fermentation liquor (or fermentation sterile filtrate) to the kasugamycin is 4999:1-99:1, and is further preferably 1499:1-499:1. The bactericidal composition shows a synergistic effect within the above-mentioned ratio range, overcomes and delays drug resistance of pathogenic bacteria, has a good prevention and control effect on pear fire blight, a long effective period and low application cost, is obviously superior to a single agent in the prevention and control effect, and greatly reduces the use amount of the kasugamycin.

This invention relates to the field of kasugamycin production technology, specifically disclosing a kasugamycin fermentation culture medium and a kasugamycin fermentation method. The fermentation basal culture medium and the supplemental culture medium are composed of the following components by volume percentage: 5-8% soybean meal, 0.1-0.5% sodium glutamate, 0.26-0.5% potassium dihydrogen phosphate, 0.25-0.5% corn steep liquor, 7-9% soybean oil, and 1-3% maltodextrin. The supplemental culture medium consists of 0.5-1.6% soybean meal and 0.1-0.3% inositol. This invention, by optimizing the basal culture medium formula and combining it with the addition of soybean meal and inositol in the middle and late stages, effectively increases the fermentation potency of kasugamycin. Simultaneously, it avoids the problem of increased fermentation broth viscosity and impaired dissolved oxygen transfer caused by an unreasonable carbon-nitrogen ratio in traditional fermentation processes. It significantly reduces the viscosity of the fermentation broth, improves oxygen supply, and is beneficial for cell growth and the synthesis of secondary metabolites.

The invention discloses a bactericidal composition for preventing and treating gray mold and application thereof, and belongs to the technical field of pesticides. The effective components of the bactericidal composition disclosed by the invention are the flurobixafen and the zhongshengmycin, wherein the mass ratio of the flurobixafen to the zhongshengmycin is (2-9): 1. The Zhongshengmycin and the chlorine fluorine bixafen are compounded for preventing and treating the gray mold, so that the pesticide dosage is reduced during use, the prevention and treatment cost is reduced, the generation of pathogenic bacterium resistance is delayed, and the pollution to the environment is reduced.

The chitinase 3-like 1 (CHI3L1) inhibitor, specifically kasugamycin, provided by the present invention, suppresses the expression or activation of chitinase 3-like 1 (CHI3L1), thereby effectively preventing or treating infections with acid-fast bacteria, particularly non-tuberculous mycobacteria and various diseases caused by infection with acid-fast bacteria, particularly nontuberculous mycobacteria. In addition, by measuring the expression level of chitinase 3-like 1 (CHI3L1) protein, when the expression level is higher than that of a control group, it is possible to effectively predict infection with acid-fast bacteria, particularly non-tuberculous mycobacteria, the onset of diseases caused by infection with acid-fast bacteria, particularly non-tuberculous mycobacteria, or the prognosis of diseases related to infection with acid fast bacteria, particularly nontuberculous mycobacteria.

A fungicidal composition, the fungicidal composition comprising a component A, the component A comprising a cyclic ester peptide gold basidiosin A or a stereoisomer thereof; and a component B, wherein the component B comprises spring daily mycin or natamycin. A method of controlling or preventing a phytopathogenic disease or a phytopathogenic fungus on a plant or on propagation material thereof, the method comprising applying the composition to the plant, locus or propagation material thereof. The invention also relates to the use of the composition as a fungicide.

The invention discloses cucumber nanoparticles and an extraction method and application thereof, and the extraction method comprises the following steps: crushing cucumber leaves in a two-leaf one-core stage, adding n-butyl alcohol, soaking for 30 minutes, and removing chlorophyll; soaking with ethanol for 10 minutes, drying, and weighing the powder; adding a certain amount of dimethyl sulfoxide into the powder, mixing, performing ultrasonic treatment for 10 minutes to obtain cucumber stock solution, centrifuging for 10 minutes, and taking supernatant to obtain the nano particles. And mixing kasugamycin and the cucumber leaf nano-particles, dropwise adding the mixture and sterile water into a beaker at the same time, keeping an ultrasonic state in the whole process, and obtaining a drug-loaded cucumber leaf nano-particle solution after ultrasonic treatment is completed. The extraction method provided by the invention is convenient and effective, the extraction purity is high, and the drug-loaded cucumber nanoparticles can improve the bacteriostasis rate of kasugamycin in inhibiting cucumber botrytis cinerea.

The invention relates to the technical field of chemical synthesis and application, in particular to a 1, 4-naphthoquinone derivative and a preparation method and application thereof. The 1, 4-naphthoquinone derivative is prepared by carrying out mercaptan addition on sulfydryl of a sulfydryl-containing compound and 1, 4-naphthoquinone at a site 2, the preparation method is simple, antibacterial activity results show that the prepared 1, 4-naphthoquinone derivative has antibacterial activity on xanthomonas oryzae, pseudomonas syringae and ralstonia solanacearum, and the antibacterial effect is higher than that of kasugamycin.

This invention relates to a streptomycin-producing strain and its application, wherein the strain is Streptomyces. Streptomyces sp. ZS-2 has good activity in producing kasugamycin, and its fermentation products have higher antibacterial activity and a wider antibacterial range.

This invention relates to a streptomycin-producing strain and its application, wherein the strain is Streptomyces. Streptomyces sp. ZS-1 has good activity in producing kasugamycin, and its fermentation products have higher antibacterial activity and a wider antibacterial range.

The invention relates to a sterilization composition and application thereof, in particular to the field of pesticides, the effective active ingredients of the sterilization composition are kasugamycin and copper citrate, and the weight ratio of the kasugamycin to the copper citrate is 1: 1-1: 10. The bactericidal composition expands the antibacterial spectrum, improves the pesticide effect, prolongs the lasting period, reduces the dosage, saves the economic cost, reduces the environmental pollution, is small in residual quantity, and has a very good treatment effect on occurred diseases.

The invention discloses preparation of pyrrole peptide and application of the pyrrole peptide in agriculture, and relates to the field of application of the pyrrole peptide in agriculture, the preparation of the pyrrole peptide and the application of the pyrrole peptide in agriculture are obviously different from traditional chemical pesticides through the application of the pyrrole peptide in agriculture, and the problem of environmental pollution is effectively reduced. Pyrrole peptide is used as a bioactive compound, shows high efficiency in plant disease control, is good in biodegradability, and reduces pollution risks of soil, water sources and air. Through comparison of embodiments 2 to 4, the control effect of the pyrrolopeptide on tobacco mosaic virus, tomato gray mold and rice bacterial leaf blight under different concentrations is superior to that of traditional chemical pesticides, such as amino-oligosaccharin, carbendazim and kasugamycin. The pyrrole peptide is not only environment-friendly, but also remarkable in effect in practical application, and provides powerful support for development of green agriculture.

This invention relates to the field of biological control, and in particular to a compound agent for controlling pear fire blight, its preparation method, and its application. This invention provides a compound agent with Bacillus vesicularis FX1 fermentation broth and kasugamycin aqueous solution as active ingredients, which can effectively control pear fire blight. The compound agent, by combining Bacillus vesicularis FX1 fermentation broth and kasugamycin aqueous solution, exhibits a synergistic effect. It leverages the high efficiency and rapid bactericidal advantage of kasugamycin while increasing the colonization of Bacillus vesicularis FX1 on the tree surface, making it the dominant foliar flora and constructing a stable and balanced micro-ecosystem. This can reduce the use of chemical pesticides by 60%, leveraging the synergistic and complementary effects of bacteria and pesticides to improve disease control, achieving the goal of safe, efficient, and sustainable control of the occurrence, spread, and diffusion of the disease.

The present invention relates to an agrochemical composition comprising kasugamycin or a salt thereof. The invention also relates to a soluble concentrate comprising kasugamycin, wherein the pH of the composition ranges from 2 to 4.