9 results about "Cyromazine" patented technology

The invention discloses a cyromazine concentration detection and analysis method and system, and relates to the technical field of pesticide residue detection.The method comprises the specific steps that a cyromazine detection chip is prepared, an integrated signal probe is prepared, a detection reaction system is constructed, triple cooperative response signals are collected, multiple signals are fused, and the cyromazine concentration is calculated; the cyromazine detection chip and the integrated signal probe are prepared, the fluorescence, electrochemistry and SERS triple synergistic response signal acquisition technology is combined, the accuracy of cyromazine concentration detection is improved, the gold nanoparticle modified substrate and the gold nanorod loaded fluorescence and electrochemical active substances are utilized, the response strength of the signal probe is enhanced, and the sensitivity of the signal probe is improved. The fluorescence spectrophotometer can detect cyromazine with lower concentration, meanwhile, the electrochemical workstation and the Raman spectrometer are introduced, so that the electrochemical peak current and SERS characteristic peak displacement are accurately acquired, signals from different sources are normalized, and errors existing among single signals are eliminated.

The invention discloses design and synthesis of a hapten of cyromazine, development of a cyromazine artificial antigen and a cyromazine antibody, and application of the cyromazine artificial antigen and the cyromazine antibody in the field of food safety rapid detection. The aminocarboxylic acid modified cyromazine hapten product is prepared through the steps of cyromazine hapten design, connecting arm introduction, synthesis, purification and the like. The cyromazine hapten with the structure is coupled with keyhole limpet hemocyanin to form an artificial immune antigen with immunogenicity, and is coupled with chicken ovalbumin to form an artificial competitive antigen. Tests show that the artificial immune antigen has high immunocompetence and can stimulate an animal immune system to generate an anti-cyromazine antibody, and the titer of an immune Blab / c mouse serum antibody is 16000. The IC50 of an enzyme-linked immunosorbent assay (ELISA) detection method established by the cyromazine artificial competitive antigen and the anti-cyromazine antibody is 5.3 [mu] g / L, and the detection sensitivity of an established gold-labeled immunochromatography detection method reaches 50 [mu] g / L.

The present application relates to the technical field of pesticides, and discloses application of a suspension composition containing cyromazine to the prevention and treatment of liriomyza trifolii. The suspension composition is composed of cyromazine, deltamethrin and an auxiliary agent, and is prepared into a suspension agent, wherein the weight ratio of cyromazine to deltamethrin is 10:1-14:1. The suspension composition of the present application fills the market gap of the currently available pesticide without mixed composition for the prevention and treatment of liriomyza trifolii, has a good prevention and treatment effect on liriomyza trifolii, delays drug resistance, reduces the use amount of pesticides, reduces the use cost of farmers, is conducive to environmental protection and food safety, and is environmentally friendly.

The invention discloses a method for detecting the residual quantity of cyromazine in animal-derived food. The method comprises the following steps: S1, extracting to-be-detected animal-derived food; s2, purifying; s3, preparing a standard solution; s4, analysis and determination: detecting the standard series of working solutions with different concentrations in the step S3 through a liquid chromatograph-mass spectrometer to obtain a standard curve; s2, detecting the to-be-detected sample solution prepared in the step S2 through a liquid chromatograph-mass spectrometer, drawing a standard curve by taking the concentration of the standard series working solution as an abscissa and taking the peak area of cyromazine and the peak area of a cyromazine-D4 internal standard as an ordinate, calculating the ratio of the peak area of cyromazine to the peak area of the cyromazine-D4 internal standard in the to-be-detected sample solution, and calculating the content of cyromazine in the to-be-detected sample solution according to the ratio of cyromazine to cyromazine-D4 internal standard in the to-be-detected sample solution. Substituting into the standard curve to obtain the content of cyromazine in the to-be-detected sample liquid, and calculating according to the mass of the sample represented by the to-be-detected sample liquid to obtain the content of cyromazine in the to-be-detected sample. And rapid and efficient detection of cyromazine in animal-derived food is realized.

The invention belongs to the technical field of pesticide residue detection, and particularly discloses an ultraviolet-fluorescence spectrum fused cyromazine detection method based on a BOSS-PSO-BP neural network, and the method comprises the following steps: step 1, preparing a cyromazine sample with gradient concentration of 2.25 * 10 <-6 >-1.47 * 10 <-4 > mg / mL for training a neural network; 2, detecting the samples with different concentrations by using an LS55 fluorescence spectrophotometer and a UV-6300 ultraviolet spectrophotometer respectively, and completing data acquisition; 3, respectively carrying out maximum and minimum value normalization processing on the ultraviolet spectrum and the fluorescence spectrum to unify the data scale, and carrying out data preprocessing; step 4, screening key wavelengths by adopting a BOSS algorithm; step 5, optimizing the BP neural network by a PSO algorithm; and 6, after training is completed, evaluating indexes such as a decision coefficient, RMSE and a relative error, and after requirements are met, storing network parameters, and applying the network parameters to prediction of a to-be-tested sample. Compared with a single spectrum model, the precision of the detection method is improved by about 30%, and the detection accuracy of the trace pesticide in the complex water body is remarkably enhanced.

The invention discloses a cyromazine granule and a preparation method thereof, and belongs to the technical field of pharmaceutical preparations, the cyromazine granule comprises the following raw materials: cyromazine raw powder, a disintegrating agent, an adhesive, a filler, a light absorbing agent, a suspending aid and a sustained-release skeleton; the disintegrating agent is sodium carboxymethyl starch, the adhesive is PVP K30, the filling agent is corn starch, the light absorbing agent is phenyl salicylate, the suspending aid is HPMC, and the sustained-release skeleton is ethyl cellulose; according to the cyromazine granule and the preparation method thereof, the problems that a cyromazine preparation is easy to degrade under the conditions of illumination or high temperature and high humidity, the action time is short and the stability is poor can be solved, and meanwhile, the cyromazine granule and the preparation method thereof can meet various external administration modes.

The present application relates to a synergistic composition containing a biologically effective amount of compound A and component B, wherein the component B is one of thiazide ketone, avermectin, spirotetramat, pyridalyl, emamectin benzoate, azamethiphos, azocyclotin, pyridaben, quimacryd thiocyl, pyrimidifen, tebufenpyrad, flufenoxuron, chlorfenapyr, cyromazine, and halofenozide, and a method thereof for controlling pests in agronomic and non-agronomic environments. The compound A has a synergistic effect with the component B, which can improve the pest control effect, reduce the application amount, reduce the use frequency, and reduce the use cost.

The invention belongs to the technical field of pesticides, and relates to an insecticidal composition and application thereof. The insecticidal composition comprises an active component A and an active component B, the active component A is a compound represented by a formula (I), the active component B is any one of cyromazine, diafenthiuron and pyridalyl, and the mass ratio of the active component A to the active component B is 1: 70-50: 1. The composition disclosed by the invention has a synergistic effect on prevention and control of agricultural and forestry pests within a certain proportioning range, and is good in insecticidal activity and safe to crops.

The invention belongs to the technical field of pesticides, and particularly relates to application of an insecticide composition containing cyprosulfuron to prevention and treatment of aphids. The insecticide composition comprises the cyprosulfuron and the neonicotinoid insecticide, the mass ratio of the cyprosulfuron to the neonicotinoid insecticide is (1: 5)-(5: 1), and the neonicotinoid insecticide is imidacloprid and / or acetamiprid. According to the insecticide composition, through synergistic interaction in the aphid prevention and control process, the chemical aphid prevention and control effect can be improved while the use amount of the insecticide is reduced, and a novel, efficient and environment-friendly solution is provided for prevention and control of agricultural insects including aphids.