236 results about "Thin-layer chromatography" patented technology

The invention discloses a substance-based quality detection method for Xiaohuang powder, and belongs to the technical field of quality detection of traditional Chinese medicines. According to the method, standard control of a classic famous prescription is realized by constructing a multi-dimensional quality control system. The method comprises the following steps: firstly, carrying out specific identification on gardenia, divaricate saposhnikovia root, liquorice and pogostemon cablin in the prescription by adopting a thin-layer chromatography; meanwhile, a multi-index component content determination method is established, and the contents of five components including geniposide, cimicifugin, 5-O-methylvisammioside, liquiritin and glycyrrhizic acid are synchronously determined by applying a high performance liquid chromatography (HPLC). Through a system quality control strategy combining qualitative identification and quantitative analysis, not only is a quality standard system of the substance reference of the Xiaohuang powder perfected, but also reliable technical guarantee is provided for ensuring the stability and consistency of product quality. The establishment of the method establishes a standardized method system for the substance-based quality control of the classical famous prescription Xiaohuang powder.

The invention discloses a synthesis method of a novel benzosuberone compound, and belongs to the field of organic synthesis. The preparation method comprises the following steps: uniformly stirring methyltriphenylphosphonium bromide in a solvent at room temperature, dropwise adding an n-hexane solution of n-butyllithium in an ice-water bath, stirring a reaction system at room temperature for 30-40 minutes after dropwise adding is completed, then adding an initial raw material phenanthrenequinone 1 in the ice-water bath, transferring the reaction system to 40 DEG C for reaction, and after the reaction is monitored to be complete by a TLC (Thin Layer Chromatography) dot plate, filtering, washing and drying to obtain the phenanthrenequinone 1. And pouring the reaction liquid into a silica gel chromatographic column, and simply filtering by using dichloromethane as an eluent to remove salt and phosphine oxide. And performing rotary evaporation to remove the organic solvent to obtain a crude product, and separating and purifying to obtain a target product 2. The method is short in reaction time and low in reaction cost, provides a practical method for obtaining the seven-membered rigid ring skeleton, and has potential value for synthesis of natural products and bioactive molecules.

The invention relates to the technical field of traditional Chinese medicine detection, in particular to a quality control method of a heart fire clearing lotus seed beverage compound preparation, which comprises the following steps: respectively preparing test solution A-E; based on the test solution A, identifying the scutellaria baicalensis by adopting a thin-layer chromatography; identifying cortex lycii radicis and liquorice based on the test solution B, identifying ginseng based on the test solution C, identifying semen plantaginis based on the test solution D, and identifying lotus seeds based on the test solution E. According to the method, repeated extraction of the reference sample during identification of different medicine flavors can be reduced, and the method has the advantages of clear spots, good separation degree, strong specificity, no background interference and good durability.

The invention discloses a radix astragali, rhizoma polygonati and ligustrum lucidum ait traditional Chinese medicine preparation for treating myelosuppression as well as a preparation method and a detection method thereof. The preparation is prepared from 50-150 parts of radix astragali, 50-150 parts of wine-processed rhizoma polygonati, 25-75 parts of wine-processed ligustrum lucidum ait, 50-150 parts of blanched rhizoma drynariae, 50-150 parts of radix trichosanthis and 25-75 parts of herba epimedii. The optimal extraction process and refining process are screened out based on effective components and pharmacological activity through a large number of tests, and the optimal preparation process of the Shuanghuangliangwhitening oral liquid and other traditional Chinese medicine preparations is obtained through stability investigation and verification. According to the invention, a thin layer chromatography is adopted, the four medicinal materials of astragalus membranaceus, glossy privet fruit, rhizoma drynariae and herba epimedii are respectively subjected to thin layer chromatography research, and methodology research shows that the method is stable and feasible. The invention establishes a content determination method for astragaloside, calycosin-7-glucoside, specnuezhenide and icariin, establishes a quality standard, and has important significance for ensuring the clinical curative effect and safety of astragaloside, calycosin-7-glucoside, specnuezhenide and icariin.

The invention relates to the technical field of pharmaceutical analysis, in particular to a thin-layer chromatography identification method of vitality-preserving decoction and a preparation thereof. Comprising the following steps: S1, extracting a sample to be detected by using diethyl ether, and preparing a test solution; s2, preparing a cinnamaldehyde reference substance solution and a 6-gingerol reference substance solution; the method further comprises at least one of the steps S3 and S4; s3, dripping the test solution and the cinnamaldehyde reference solution on the same thin-layer plate, developing with a first developing solvent, and identifying the cinnamon; the first developing solvent comprises petroleum ether and ethyl acetate in a volume ratio of (15-20): 3; s4, dripping the test solution and the 6-gingerol reference substance solution on the same thin-layer plate, developing with a second developing solvent, and identifying the ginger; the second developing solvent is prepared from petroleum ether, trichloromethane and ethyl acetate according to the volume ratio of (2-4): (1-2): (1-3). The method is good in overall separation effect, clear in spots, good in specificity and durability, and capable of identifying the medicine flavors of cinnamon and ginger in the vitality-preserving decoction and the preparation thereof.

The invention relates to the technical field of thin-layer chromatography detection, and discloses a thin-layer chromatography detection method for free fluorine-18 in a fluorine-18 labeled radiopharmaceutical, which adopts ethyl acetate and n-hexane as developing solvents, and the volume ratio of ethyl acetate to n-hexane is (50-90): (10-50). The developing solvent with a specific volume ratio is adopted, and the two key indexes that the Rf value of the marked active ingredient in the radiopharmaceutical is smaller than 0.8 and the separation degree (the separation degree of the marked active ingredient in the radiopharmaceutical and free fluorine-18) R is larger than 1 are considered.

The invention relates to a method for detecting a clearing agent main agent in gasoline, and the method comprises the following steps: carrying out thin-layer chromatography detection on a to-be-detected sample, and determining the composition of the clearing agent main agent in the concentrated to-be-detected sample according to color spot distribution on an obtained thin-layer chromatography plate, wherein the clearing agent main agent comprises one or more of a polyether amine clearing agent, a polyisobutene amine clearing agent and a Mannich base clearing agent; the thin-layer chromatography detection sequentially comprises developing and developing treatment; a developing agent for developing comprises one or more of a developing agent I, a developing agent II and a developing agent III; the developing solvent I is methanol, and the developing solvent II and the developing solvent III comprise one or more of alcohol with the carbon atom number of 1-6, aliphatic hydrocarbon with the carbon atom number of 5-12 and cycloalkane with the carbon atom number of 5-12. According to the method provided by the invention, whether the clearing agent main agent is added into the sample to be detected or not can be rapidly determined, and the type of the clearing agent main agent can be rapidly and accurately detected.

The present invention discloses a thin layer chromatography identification method for simultaneously identifying multiple components in a refined flat peach pill preparation and its application, which belongs to the technical field of quality control of traditional Chinese medicine. The thin layer chromatography identification method of the present invention is divided into two parts. The first part adopts methanol ultrasonic extraction and is developed by toluene-ethyl acetate-formic acid-methanol system, which can simultaneously identify the alpinia oxyphylla, wolfberry and fenxinmu in the refined flat peach pill; the second part is based on the methanol ultrasonic extraction, and hydrochloric acid is added to heat and reflux extraction, shaken and evaporated, and then ethanol is redissolved and developed by petroleum ether-ethyl acetate system, which can identify the ophiopogon in the refined flat peach pill. That is, only two sample preparation methods are required, and one thin layer plate can simply, quickly and effectively identify the four medicinal materials in the refined flat peach pill, and the color spots are clear, without tailing, without cross-linking and good specificity.

The present application provides a kind of Echinops formula granule quality detection method, including the thin layer identification of Echinops formula granule, characteristic map construction and β-ecdysterone content determination, the content standard of formula granule is limited to every 1g contains β-ecdysterone 3.5~14.4mg, thin layer identification is identified using thin layer chromatography, characteristic map construction and β-ecdysterone content determination are all using liquid chromatography method.The quality detection method of Echinops formula granule of the present application, by the detection of thin layer identification, characteristic map construction and β-ecdysterone content determination to assess the quality of Echinops formula granule, can comprehensively reflect the inherent quality of formula granule and better control the quality of Echinops formula granule.

The application discloses a kind of radionuclide 18 The present application discloses a method for detecting the radiochemical purity of F-labeled FAPI compounds, which comprises using thin layer chromatography to detect the radiochemical purity of F-labeled FAPI compounds 18 The present application discloses a method for detecting the radiochemical purity of F-labeled FAPI compounds, which comprises using thin layer chromatography to detect the radiochemical purity of F-labeled FAPI compounds 18 The present application discloses a method for detecting the radiochemical purity of F-labeled FAPI compounds, which comprises using thin layer chromatography to detect the radiochemical purity of F-labeled FAPI compounds 18 The present application discloses a method for detecting the radiochemical purity of F-labeled FAPI compounds, which comprises using thin layer chromatography to detect the radiochemical purity of F-labeled FAPI compounds 18 The present application discloses a method for detecting the radiochemical purity of F-labeled FAPI compounds, which comprises using thin layer chromatography to detect the radiochemical purity of F-labeled FAPI compounds 18 The present application discloses a method for detecting the radiochemical purity of F-labeled FAPI compounds, which comprises using thin layer chromatography to detect the radiochemical purity of F-labeled FAPI compounds 18 The present application discloses a method for detecting the radiochemical purity of F-labeled FAPI compounds, which comprises using thin layer chromatography to detect the radiochemical purity of F-labeled FAPI compounds 18 The present application discloses a method for detecting the radiochemical purity of F-labeled FAPI compounds, which comprises using thin layer chromatography to detect the radiochemical purity of F-labeled FAPI compounds 18 The present application discloses a method for detecting the radiochemical purity of F-labeled FAPI compounds, which comprises using thin layer chromatography to detect the radiochemical purity of F-labeled FAPI compounds 18 The present application discloses a method for detecting the radiochemical purity of F-labeled FAPI compounds, which comprises using thin layer chromatography to detect the radiochemical purity of F-labeled FAPI compounds 18 The present application discloses a method for detecting the radiochemical purity of F-labeled FAPI compounds, which comprises using thin layer chromatography to detect the radiochemical purity of F-labeled FAPI compounds

The invention relates to the technical field of thin-layer chromatography detection, and discloses a thin-layer chromatography separation method for amino polyether and a matrix in a fluorine-18 labeled radiopharmaceutical, and the adopted developing solvent is acetonitrile and ammonia water, and the volume ratio of the acetonitrile to the ammonia water is 90: 10-85: 15. According to the method, amino polyether and matrix components are separated by adopting a developing solvent with a specific volume ratio, and particularly, sodium ascorbate in the amino polyether and the matrix is separated.

The invention belongs to the technical field of traditional Chinese medicines, and particularly relates to stasis-removing and pain-relieving pills and a quality detection method thereof. The stasis-removing and pain-relieving pill is prepared by taking radix paeoniae alba, rhizoma corydalis, radix paeoniae rubra, angelica sinensis, ligusticum wallichii, rhizoma cyperi, rhizoma zingiberis, fennel and astragalus membranaceus as raw materials and taking 10% starch slurry as an adhesive. The quality detection method of the stasis-removing and pain-relieving pill comprises general inspection, microscopic identification and thin-layer chromatography identification. And high performance liquid chromatography content determination. According to the present invention, by researching the preparation process and the quality standard of the stasis removing and pain relieving pill, the new thought and the new method are provided for the development of the traditional Chinese medicine preparation, the excellent choice is hopefully provided for the common gynecologic symptoms such as irregular menstruation, dysmenorrhea, postpartum blood stasis abdominal pain and the like, and the pain caused by the illness is relieved.

The present application belongs to the technical field of traditional Chinese medicine component detection, and particularly relates to a qualitative identification method of water-soluble components of safflower. The qualitative identification method of water-soluble components of safflower provided by the present application adopts water as an extraction solvent, extracts water-soluble components in safflower, and then adopts a thin layer chromatography method for identification, effectively solves the technical problem that safflower cannot be effectively detected after being boiled in water in the prior art, and is suitable for the inspection of classical famous prescription preparations containing safflower.

The invention belongs to the technical field of medicines, and particularly relates to an infantile cough relieving syrup detection method which comprises the following steps: identifying radix peucedani, platycodon grandiflorum, pericarpium citri reticulatae and cortex mori radicis in infantile cough relieving syrup by adopting a thin layer chromatography; and simultaneously detecting the fructus arctii and the radix scutellariae by adopting a high performance liquid chromatography. The detection method for the infantile cough relieving syrup has the advantages of being rapid in analysis, easy to operate, high in accuracy, wide in adaptability and the like, and establishment and overall evaluation of the quality standard of the infantile cough relieving syrup are facilitated.

This invention belongs to the field of traditional Chinese medicine detection technology, specifically relating to a multi-component thin-layer chromatography (TLC) identification method for pediatric runtong syrup. This invention establishes specific TLC identification processes for roasted radish seed, immature bitter orange, hemp seed, and scrophularia root, optimizing the sample pretreatment, developing solvent ratio, spotting volume, and colorimetric inspection conditions for each component. After specificity and robustness studies, the method demonstrates good stability under varying temperature, humidity, TLC plate type, and spotting volume ranges, exhibiting no negative interference and clear spots, enabling accurate multi-component identification. This invention is the first to establish a TLC identification method for these four medicinal materials in pediatric runtong syrup, providing a scientific and reliable technical means for the quality control of this compound preparation and filling a gap in existing technology.

The present invention provides a thin-layer chromatography (TLC) identification method for Amomum villosum formula granules, comprising the steps of preparing a test solution, preparing a control medicinal material solution, and performing TLC identification. The test solution and the control medicinal material solution are prepared using a simple and rapid preparation method, and are spotted on the same TLC plate. After development, the TLC plate is inspected under ultraviolet light to obtain a multi-information TLC of the Amomum villosum formula granules. This method uses the control medicinal material as a reference and flavonoids as the main identification component. It has high specificity and can distinguish Amomum villosum of different origins (Amomum villosum and Amomum villosum var. amomi) and identify mixed and counterfeit Amomum villosum (Amomum villosum var. longifolia).

The invention discloses a flavonoid enantiomer compound extracted from Epimedium sagittatum and its preparation method and application. The preparation method comprises the following steps: crushing Epimedium sagittatum to prepare a paste, suspending the paste with water, extracting the paste with petroleum ether, dichloromethane, ethyl acetate and n-butanol respectively to obtain extracts of each part, performing gradient elution separation by silica gel column chromatography, combining similar parts according to the color development results of thin layer chromatography (TLC) to obtain multiple polar segments; chromatographing the target polar segment and performing gradient elution to obtain multiple components, and then combining similar components by thin layer chromatography (TLC) spot plate absorption to obtain multiple sub-components; eluting and purifying the target sub-components, collecting fractions with different retention times, and drying to obtain four compounds respectively. The four compounds have a significant inhibitory effect on the cell viability of human breast cancer MCF-7 cells and have anti-breast cancer activity. The four compounds can be used in the preparation of drugs for treating breast cancer, with huge social and economic benefits.

The invention relates to the technical field of cistanche deserticola detection, in particular to a method for simultaneously and rapidly detecting four phenylethanoid glycosides in cistanche deserticola, which comprises the following steps: preparing a plurality of parts of mixed reference substance solutions containing four phenylethanoid glycosides with known concentrations; preparing a to-be-detected cistanche sample into a test solution; spotting the mixed reference substance solution and the test solution on the same thin-layer plate, carrying out thin-layer chromatography development by adopting a developing solvent, and volatilizing the solvent; placing the thin-layer plate after the solvent is volatilized under ultraviolet light to collect spot images, and processing the images by adopting image analysis software to obtain integral gray values of all phenylethanoid glycoside spots; respectively drawing a standard curve by taking the known concentrations of the four phenylethanoid glycosides in each mixed reference substance solution as horizontal coordinates and the corresponding integral gray values as vertical coordinates, establishing a linear regression equation, and calculating the contents of the four phenylethanoid glycosides in the cistanche deserticola sample to be detected; the invention provides a rapid and accurate method for determining the content of four phenylethanoid glycosides in cistanche.

The application discloses a quality detection method for a compound phyllium panax schisandra preparation, and belongs to the technical field of drug detection and analysis. The traditional Chinese medicine is composed of phyllium, panax and schisandra. Qualitative analysis is conducted on the phyllium, panax and schisandra in the compound by using a thin layer chromatography method; and the contents of gallic acid, ginsenoside Rg1 and schisandrin A in the compound are determined by using a high performance liquid chromatography method. The thin layer chromatography method is one of classical traditional Chinese medicine analysis methods, and has the advantages of rapidness, convenience and the like; the high performance liquid chromatography method is also one of classical traditional Chinese medicine analysis methods, and has the advantages of mature technology, good stability, high universality and the like, can be used for widely and accurately detecting chemical components in a complex traditional Chinese medicine compound, the content determination method passes the method validation, has good linear relationship, and the precision, stability, repeatability and recovery rate meet the regulations, and the combination of qualitative analysis and quantitative analysis lays a foundation for establishing the quality standard of the compound preparation.

The invention discloses a heart-protecting granule identification and quality control method based on thin layer chromatography, and belongs to the technical field of medicine detection. The thin-layer chromatography identification method comprises the following steps: identifying astragalus membranaceus by taking astragaloside as a reference substance, identifying wine-treated rhubarb by taking chrysophanol and emodin as reference substances, identifying leech by taking a leech medicinal material as a reference substance, identifying liquorice by taking liquiritin and a liquorice medicinal material as reference substances, and identifying radix rehmanniae by taking catalpol as a reference substance. And identifying salvia miltiorrhiza by taking salvianolic acid B and salvia miltiorrhiza medicinal materials as reference substances, and identifying fructus aurantii by taking naringin and neohesperidin as reference substances. By establishing the thin-layer chromatography identification method of the heart-protecting granules, an exclusive developing solvent and a developing mode are adopted, accurate identification is achieved according to the characteristics of spot colors, fluorescence characteristics and the like of corresponding positions of a test substance chromatography, a reference substance and a reference medicinal material chromatography, and the method is easy and convenient to operate, low in detection cost and high in repeatability and specificity; and quality control can be effectively carried out in the production process of the heart-protecting granules.

The invention provides a triterpene enantiomer compound as well as a preparation method and application thereof, and relates to the technical field of medicines. The preparation method of the triterpenoid enantiomer compound comprises the following steps: (1) preparing a lycopodium clavatum extract: crushing a dried lycopodium clavatum whole plant, adding the crushed lycopodium clavatum whole plant into an ethanol solution for extraction, collecting an extracting solution, and concentrating the extracting solution under reduced pressure into paste to obtain a lycopodium clavatum crude extract; and (2) separation and purification: adding the crude lycopodium clavatum extract in the step (1) into deionized water for dilution, preparing a suspension, sequentially extracting with petroleum ether and chloroform, concentrating the chloroform extract into extract, and performing column chromatography, thin layer chromatography and molecular sieve chromatography separation to obtain the target triterpenoid enantiomer compounds named (+)-oncerin A (1) and (-)-oncerin A (2). The invention provides a new path for developing a new acetylcholin esterase inhibitor drug, and the application prospect is good.

The utility model discloses a light source adjusting device of a thin-layer chromatography scanner, and relates to the technical field of thin-layer chromatography scanners. The scanner comprises a scanner main body, a scanning table, a circuit board and a halogen tungsten lamp, the circuit board is installed inside the scanner main body, the halogen tungsten lamp is installed on a lamp holder of the circuit board, and a light source mechanism is arranged inside the scanner main body. The first gear drives the worm to rotate, the worm drives the worm gear to rotate, the transmission speed can be further reduced, the worm gear drives the transmission shaft to rotate, the transmission shaft drives the grating to rotate slowly and uniformly through the first rotating shaft, the situation that the grating is difficult to rotate uniformly through manual operation can be avoided, and the purpose of uniform-speed rotation is achieved. The threaded rod rotates to drive the moving block to move, the moving block drives the connecting block to move, and the connecting block drives the focusing lens to move, so that the position of the focusing lens can be adjusted to effectively focus light rays, and the purpose of improving the focusing effect is achieved.

The invention relates to the technical field of plumbago zeylanica identification. The invention provides a method for distinguishing plumbago zeylanica and fake product false jasmine based on thin layer chromatography, a developing solvent is a mixture of toluene, methanol, glacial acetic acid and water, and the volume ratio of toluene to methanol to glacial acetic acid to water is (6-8): (0.8-1.2): (0.4-0.6): (0.4-0.6). Compared with the current medicinal material standard of the plumbago zeylanica, the method disclosed by the invention can be used for identifying the plumbago zeylanica and the fake product, namely the false jasmine, only through a thin layer chromatography, is simple, convenient and rapid to operate, strong in durability, high in detection efficiency, visual and clear in judgment and objective and reliable in conclusion, and provides technical support for perfecting and improving the quality standard of the plumbago zeylanica medicinal material and better controlling the quality of the medicinal material.

The invention discloses a disubstituted halogenated azaanthrone visible light initiator, a preparation method and application of the disubstituted halogenated azaanthrone visible light initiator in an acrylate photopolymerization system. The method comprises the following steps: dissolving a 2, 4-disubstituted halogenated azacyclo-anthrone compound in an organic solvent under the protection of inert gas, adding excessive alkali, slowly dropwise adding excessive organic solution of an acyl chloride compound in an ice-water bath, reacting at room temperature, detecting that the reaction is complete by TLC (Thin Layer Chromatography), stopping the reaction, performing suction filtration, concentrating filtrate, and drying to obtain the 2, 4-disubstituted halogenated azacyclo-anthrone compound. And purifying to obtain the novel disubstituted halogenated azacyclo-anthrone high-efficiency visible light initiator. The novel disubstituted halogenated azacyclo-anthrone high-efficiency visible light initiator not only shows better solubility in an organic solvent and resin, but also shows higher polymerization efficiency in a photocuring system, so that the application range of the novel disubstituted halogenated azacyclo-anthrone high-efficiency visible light initiator in a free radical photocuring system is widened.

The invention provides oleanolic acid, and a preparation method of the oleanolic acid comprises the following steps: S1, dissolving 5g of arginic acid in 500ml of dichloromethane, adding 7g of pyridinium dichlorochromate, stirring at room temperature for 18 hours, and detecting the reaction degree by thin-layer chromatography; s2, after the reaction is completed and vacuum concentration is carried out, a sample is mixed with 200-300-mesh silica gel, the mixture is volatilized to be dry and then placed on a silica gel column, column chromatography separation is carried out, petroleum ether / ethyl acetate is selected as a mobile phase, 2.87 g of oleanolic acid is obtained, the molecular formula is C30H46O3, and the yield is 57.6%. The oleanolic acid provided by the invention can be used for preparing medicines for treating oligospermia and medicines for improving dyszoospermia. The oleanolic acid provided by the invention is a natural product or an artificially synthesized product, is low in toxicity and small in side effect, and has good effects of improving dyszoospermia and promoting fertility.

The invention relates to the technical field of quality control of traditional Chinese medicines, in particular to a thin-layer chromatography identification method for 8 medicines in 11 medicines in the whole formula of Qingjin phlegm-reducing decoction. The core of the method is that three different test solutions are adopted to realize the identification of eight medicines, namely scutellaria baicalensis, rhizoma anemarrhenae, exocarpium citri rubrum, fructus gardeniae, liquorice, thunberg fritillary bulb, platycodon grandiflorum and radix ophiopogonis. Wherein the first test solution is prepared by extracting water-saturated n-butyl alcohol, and can be simultaneously used for identifying scutellaria baicalensis, rhizoma anemarrhenae, exocarpium citri rubrum, fructus gardeniae and liquorice; the second solution is subjected to ammoniation and dichloromethane extraction to be used for thunberg fritillary bulb identification; the third solution is extracted by dichloromethane after being hydrolyzed by hydrochloric acid, and platycodon grandiflorum and radix ophiopogonis can be identified at the same time. According to the method, by optimizing a test sample preparation and development system, sharing of test samples of multiple medicines and synchronous identification are achieved, the detection efficiency is remarkably improved, the method has the advantages of being easy and convenient to operate, clear in spot, good in separation degree, high in specificity, negative, free of interference and the like, and a reliable basis is provided for quality control of the Qingjin phlegm reducing decoction.

The invention discloses a product collecting device and a control method thereof, and relates to the technical field of thin layer chromatography, the product collecting device comprises a base, a first driving module, a bottom plate, a second driving module and a collecting module, the base has a first direction, a second direction and a third direction; the first driving module is arranged on the base, and a driving part of the first driving module can linearly move along a first direction relative to the base; the bottom plate is connected with the driving part of the first driving module and is used for placing a silica gel plate; the second driving module is arranged on the base, and a driving part of the second driving module can move in the plane where the second direction and the third direction are located relative to the base; the collecting module is connected with the driving part of the second driving module, the collecting module comprises a scraping assembly and a suction assembly, the scraping assembly is used for scraping the product from the silica gel plate, and the suction assembly is used for collecting powder of the product. The product collecting device provided by the invention can realize the automation of thin-layer chromatography product recovery, and reduces dust flying.

The application discloses a detection method for separating diglyceride in vegetable oil and qualitative analysis of the diglyceride, and the diglyceride in the vegetable oil is dissolved by using n-hexane to obtain a sample for standby; different proportion eluent is used to wash and elute a solid phase extraction column, and eluent is collected and dried for standby to obtain eluate; the eluate is analyzed and quantified by using a thin layer chromatography and gas chromatography, and finally, the eluate is finely qualitatively analyzed by using a triple quadrupole; the separation method is simple, the separation of the diglyceride in the vegetable oil can be realized by using two extraction cartridges, the test steps are simplified, the separation purity is high, the cost and time are reduced; finally, qualitative analysis is performed by using GC-MS, the analysis time is short, the specific fatty acid composition in the diglyceride is more finely analyzed, and the qualitative analysis detection of food nutrition and the guidance of related food production are facilitated.

The invention discloses a rapid detection method of isobutyramido thiazolyl resorcinol in cosmetics, and belongs to the technical field of safety detection and analysis of cosmetics. Thin-layer chromatography is taken as a main line, separation, 254nm and 365nm dual-band ultraviolet observation, 105 DEG C thermal activation enhancement and three-channel color development recheck of ferric trichloride, vanillin-sulfuric acid and phosphotungstic acid are sequentially completed, and the detection result is accurate. The method comprises the following steps: acquiring multilayer evidences of physical separation, optical response and chemical reaction, establishing a standardized ratio shift value according to upper and lower interior labels and a solvent front edge, extracting indexes such as brightness and color difference, dispersing displacement and intensity signals into five-bit bar codes, realizing fault-tolerant matching by using a Hamming distance, outputting positive, confirmation or negative conclusions, and determining the accuracy of the result. And generating a report containing the original image and the parameters. The method is oriented to complex matrixes such as emulsion, face cream, essence, mask liquid, lipstick and eye shadow, by means of multi-mechanism cross validation and bar code type fusion interpretation, the false positive and false negative risks are remarkably reduced, and the result consistency and the rechecking efficiency are improved.

The application discloses a method for detecting clenbuterol based on thin layer chromatography and surface enhanced resonance Raman spectroscopy, and belongs to the technical field of food detection. The method comprises the following steps: (1) adopting thin layer chromatography to preliminarily separate the clenbuterol component from the matrix in the pig liver sample, and confirming the clenbuterol component in the pig liver sample under the ultraviolet lamp of 254 nm; (2) adding aromatic diazonium salt solution to the same Rf value of the clenbuterol component reference sample spot to generate azo compounds, and then adding a surface enhancer silver sol; (3) in-situ detecting the surface enhanced resonance Raman spectrum of the corresponding azo compound component spot, and if the surface enhanced resonance Raman spectrum of the pig liver sample solution at the same Rf value is the same as that of the reference sample solution, it is determined that the pig liver sample contains the clenbuterol component. The application has high specificity for detecting clenbuterol and salbutamol, high sensitivity, fast analysis speed, and is beneficial to fast detection of grass-roots units. The application is suitable for detecting clenbuterol.