52 results about "Heptanone" patented technology

The invention relates to the technical field of all-solid-state batteries, in particular to air-stable argyrodite type sulfide electrolyte, a preparation method thereof and an all-solid-state battery. The air-stable argyrodite type sulfide electrolyte provided by the invention comprises a sulfide solid electrolyte and a protective layer formed by self-assembly of organic molecules on the surface of the sulfide solid electrolyte, wherein the sulfide solid electrolyte is argyrodite type sulfide solid electrolyte, the general formula of the sulfide solid electrolyte is Li < 7-a > PS < 6-a > X , X is halogen, and a is more than 0 and less than 2; the organic molecule is at least one of 1-methoxyhexane, 2-heptanone, 3-chloropropanol, 4-chlorobenzyl mercaptan, n-amylamine, 5-chloromethyl-1, 3-benzodioxole, chlorophenylmethane and ethylbenzene, and the organic molecule is at least one of 1-methoxyhexane, 2-heptanone, 3-chloropropanol, 4-chlorobenzyl mercaptan, n-amylamine, 5-chloromethyl-1, 3-benzodioxole, chlorophenylmethane and ethylbenzene. According to the air-stable argyrodite type sulfide electrolyte provided by the invention, the stability of the sulfide electrolyte to water can be enhanced, and the ionic conductivity of the sulfide electrolyte can be ensured.

Organotin compositions having the formula RSnL3 and corresponding synthetic methods are described. R includes aromatic, cyclic and / or halogenated ether moieties, or polyethers, and L includes hydrolysable groups. The organotin compositions may be formed as radiation-patternable coatings on substrates. The coatings may have an average thickness from about 1 nm to about 75 nm and have the formula RSnOn(OH)3-2n, forming an oxo-hydroxo network, where R is a hydrocarbyl ether group with 1 to 30 carbon atoms and 0<n<3 / 2, wherein regions of the coating are soluble in 2-heptanone in a puddle development step following a bake at 150° C. for 120 seconds. The coatings may be radiation-patternable using UV, EUV or ion beam radiation, and corresponding methods are described.

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 discloses a preparation method of 2-heptanone, and belongs to the technical field of organic synthesis. The 2-heptanone is obtained by taking acetone and n-butyl alcohol as raw materials, toluene as a solvent and cesium carbonate and ruthenium acetylacetonate as catalysts, and the reaction product is separated and purified to obtain the purified 2-heptanone. The preparation method provided by the invention effectively improves the yield of 2-heptanone, and the used raw materials and reagents are environment-friendly and non-toxic; in addition, reaction conditions involved in the preparation method are mild, harsh reaction conditions are not needed, and large-scale application and popularization are facilitated.

An antifungal composition including a first essential oil, and a second essential oil, where the composition is configured to reduce disease onset, pathogen spread, or a combination thereof. Further, an antifungal compound including one or more aroma compounds selected from 4-(4-hydroxyphenyl)-2-butanone, furaneol, ethyl methylphenylglycidate, ethyl hexanoate, ethyl butanoate, beta-ionone, alpha-ionone, (R)-(+)-limonene, (S)-(-)-limonene, cis-3-Hexen-1-ol, nerol, linalool, 2-heptanone, alpha-terpineol, beta-damascenone, β-caryophyllene, ethyl 2-methylbutanoate, β-myrcene, gamma-octalactone, alpha-humulene, nerolidol, (E,E)-2,4-decadienal, (E,E)-α-farnesene, vanillin, phenylethyl acetate, citral, 3-methylbutan-1-ol, or a combination thereof.

The invention relates to the field of agricultural biotechnology and plant protection, and particularly provides application of 2-heptanone to preparation of a preparation for preventing and treating plant diseases. The bactericidal composition has a strong bacteriostatic effect on litchi colletotrichum gloeosporioides, strawberry colletotrichum gloeosporioides, mango leaf blight, pawpaw colletotrichum gloeosporioides, wheat gibberellic disease, mango colletotrichum gloeosporioides, tomato fusarium wilt, banana fusarium wilt, banana colletotrichum gloeosporioides and corn root rot. The fumigant developed on the basis of 2-heptanone and used for preventing and treating phytopathogen is expected to be used for preventing and treating compound diseases caused by various pathogenic bacteria, or comprehensively preventing and controlling different crop diseases in a crop rotation system, and has important development value.

The invention provides a strain of paenibacillus albidus and application thereof, and belongs to the technical field of bioengineering. The classification name of the yuan paenibacillus is Paenibacillus ehimensis WX01, the yuan paenibacillus is preserved in the China Center for Type Culture Collection, the preservation number is CCTCC NO: M2026113, and the preservation date is January 15, 2026. The paenibacillus brevis can be fermented to produce compounds 2-methylbutyric acid and 6-methyl-2-heptanone at the same time, and has the application prospect of preventing and treating plant diseases; according to the invention, further research finds that the concentrations of 2-methylbutyric acid and 6-methyl-2-heptanone obtained by the production of the paenibacillus brevis can reach 4.85 g / L and 48.34 mg / l respectively; the method for producing the 2-methylbutyric acid and the 6-methyl-2-heptanone through fermentation of the paenibacillus brevis is low in production cost, high in yield, high in safety and environmentally friendly.

The invention provides a preparation method of Bainapenem. The preparation method comprises the following steps: by taking 5-N-(4-nitrocarbobenzoxy)-2-thia-5-azabicyclo [2.2. 1] hept-3-one (1) and sulfamirone acetate (2) as initial raw materials, carrying out condensation reaction to form a compound (3); and then combining with MAP (4) to form an important intermediate compound (5). And carrying out hydrogenation reaction deprotection on the compound (5) to obtain the besipenem. The method is short in synthetic route, mild and controllable in reaction condition, safe and reliable in operation process and suitable for industrial production.

The invention discloses a Priesteria gigantea GD0038 and an application thereof in improving the flavor of weed crab sauce. The strain is deposited in the China Center for Type Culture Collection with a deposit number of CCTCC NO: M 20242548 and a deposit date of November 13, 2024. The strain is applied to the preparation of weed crab sauce, can significantly improve the flavor of the weed crab sauce, increase the content of volatile substances in the fermented weed crab sauce, and increase the content of characteristic flavor substances such as 1-penten-3-ol, 1-nonanol, isovaleraldehyde, n-hexanol, n-octanol, 3-n-decanol, 2-heptanone, and other alcohols, pyrazines, and ketones, while reducing the content of unpleasant flavor substances such as butylamine, trimethylamine, and n-hexanal. The invention has very good application prospects.

This invention provides a strain of *Bacillus erythropoietinus* and its applications, belonging to the field of bioengineering technology. This *Bacillus erythropoietinus* is classified and named... Paenibacillus ehimensis WX01, deposited at the China Center for Type Culture Collection (CCTCC) with accession number CCTCC NO: M2026113, dated January 15, 2026, describes a strain of *Bacillus erinaceus* that can ferment and simultaneously produce 2-methylbutyric acid (2-methylbutyric acid) and 6-methyl-2-heptanone, showing promising applications in plant disease control. Further research revealed that the concentrations of 2-methylbutyric acid and 6-methyl-2-heptanone obtained through this strain can reach 4.85 g / L and 48.34 mg / L, respectively. The fermentation production of 2-methylbutyric acid and 6-methyl-2-heptanone using this strain is low-cost, high-yield, safe, and environmentally friendly.

The application provides a positive photoresist composition, which comprises a phenolic resin, a photosensitive compound and a mixed solvent, wherein the mixed solvent comprises a first solvent and a second solvent, the first solvent is selected from at least one of ethyl lactate, ethyl 3-ethoxypropionate, 4-methyl-2-pentanone and 2-heptanone; and the second solvent is selected from at least one of ethylene glycol monomethyl ether, propylene glycol monomethyl ether, diethylene glycol monomethyl ether, diethylene glycol dimethyl ether, propylene glycol methyl ether acetate, ethyl acetate and n-butyl acetate. The photoresist composition provided by the application has better stability than a photoresist composition using a single solvent, and can be better applied to an organic electroluminescent display.

The present invention addresses the problem of providing technology that can reduce off-flavors derived from free medium-chain fatty acids in aqueous-phase-containing foods containing triglycerides that contain medium-chain fatty acids as constituent fatty acids.　The present invention provides a food composition, said food composition comprising an oil phase and aqueous phase and comprising a prescribed amount of one or more components selected from the group consisting of allyl isothiocyanate, 1-hexanol, 2-heptanone, and butyric acid, wherein the oil phase contains a medium-chain fatty acid, and the medium-chain fatty acid is in the form of a triglyceride constituent fatty acid and / or in the form of a free medium-chain fatty acid.

The invention relates to an organic catalyst for 2-heptanone synthesis reaction and a preparation method and application thereof.The organic catalyst is prepared from, by weight, 7-45 parts of active components, 0.1-2.5 parts of auxiliaries and 50-120 parts of carriers, the active components comprise the first active component and the second active component, the weight ratio of the first active component to the second active component is (60: 1)-(3: 1); wherein the first active component is one or more of iron oxide, tungsten oxide, molybdenum oxide, titanium oxide, chromium oxide, vanadium oxide, copper oxide, zinc oxide, nickel oxide, cobalt oxide and manganese oxide; and the second active component is one or more of lanthanum, cerium, indium, praseodymium, neodymium, gadolinium and holmium.

The application discloses a three-metal active carbon supported catalyst and application thereof, and the catalyst takes active carbon as a carrier, and a first metal element, a second metal element and an auxiliary metal element are loaded on the carrier, wherein the first metal element is selected from Rh, W and Ir, the second metal element is selected from Ga, Sn and Mg, and the auxiliary metal element is selected from La, Ce and Y. The application is applied to the catalytic hydrogenation of 4-heptanone into 4-heptanol, and when the conversion rate of 4-heptanone reaches 100%, the product selectivity of 4-heptanol can reach 100%, the burden of product separation and purification in the later stage can be greatly reduced, and the production cost is lowered; no solvent is used in the catalytic reaction process, the reaction temperature is relatively low, and the green production requirement is met; the catalyst has high activity, the reaction time is relatively short, and the production efficiency can be improved.

The present invention discloses a novel camphor-based fluorescent probe for detecting the organophosphorus pesticide dimethoate, as well as its preparation method and application. The present invention uses camphor as a raw material, condenses it with ethyl isonicotinate to obtain 3-(pyridine-4-formyl)-1,7,7-trimethylbicyclo[2.2.1]2-heptanone, and then cyclizes it with 4-bromophenylhydrazine to obtain 2-(4-bromophenyl)-7,8,8-trimethyl-3-(pyridine-4-yl)-4,5,6,7-tetrahydro-2H-4,7-bridged methylindazole, which is then coupled with 4-formylphenylboronic acid to obtain 4 ′ ‑(7,8,8-trimethyl-3-(pyridin-4-yl)-4,5,6,7-tetrahydro-2H-4,7-methyleneindazol-2-yl)-[1,1′-diphenyl]-4-yl)methylene)benzofuran-3(2H)-one, which was then esterified with acetyl chloride. 3-Oxo-2-((4′-(7,8,8-trimethyl-3-(pyridin-4-yl)-4,5,6,7-tetrahydro-2H-4,7-methyleneindazol-2-yl)-[1,1′-diphenyl]-4-yl)methenyl)-2,3-dihydrobenzofuran-6-yl acetate (abbreviated as CPA-OAc) was obtained. This compound can undergo enzymatic hydrolysis with carboxylesterase. Under ultraviolet irradiation, the fluorescent color of the solution changes from colorless to green. Since dimethoate can effectively inhibit the activity of carboxylesterase, when dimethoate is added to the solution, the fluorescence of the solution changes from green to colorless. Therefore, this compound can be used as a fluorescent probe for detecting dimethoate.

The present invention relates to a compound of formula (I) or a pharmaceutically acceptable salt thereof, which is useful for the treatment of diseases and / or disorders in which System Xc plays a role.

The invention discloses an oxime type cross-linking agent, a deoximation type organosilicon sealant and a preparation method thereof, and the oxime type cross-linking agent is prepared by taking phenyltrimethylsilane and chlorine as raw materials to react to obtain a product 1, and then taking the product 1 and 5-methyl-3-heptanone oxime as raw materials to react to obtain the product 1, and the mass ratio of the product 1 to 5-methyl-3-heptanone oxime is 1: 1.4-1.5. The deoximation type organosilicon sealant comprises the following components: alpha, omega-dihydroxy polydimethylsiloxane, a modified filler, an oxime type cross-linking agent, a coupling agent and a catalyst. The deoximation type organosilicon sealant is high in curing efficiency, the 3-hour curing depth reaches 1.5-2.0 mm, the strength retention rate after damp-heat aging is remarkably improved, meanwhile, 5-methyl-3-heptanone oxime is released through curing, and the carcinogenic risk level of the sealant is reduced by two levels compared with that of diacetylmonoxime.

The invention discloses mangrove forest rhizosphere saline-alkaline tolerant bacteria and application thereof in promoting salt-tolerant growth of rice and corn, the strain is Cryptococcus aureus ZJ2, the accession number of GenBank is PX891070, and the strain is separated from mangrove forest rhizosphere soil, has excellent saline-alkaline tolerance and multiple growth promoting functions, can fix nitrogen, dissolve phosphorus, dissolve potassium, produce siderophores and secrete indoleacetic acid, and can be used as a saline-alkaline tolerant bacterial strain for promoting salt-tolerant growth of rice and corn, and the application of the mangrove forest rhizosphere saline-alkaline tolerant bacteria in promoting salt-tolerant growth of rice and corn. And two growth-promoting volatile organic compounds, namely 2-heptanone and 2-nonanone, are generated. The strain and a microbial preparation taking the strain as an effective component can remarkably promote germination in a bud stage and growth in a seedling stage of rice and corn under salt stress, and the stress resistance and yield of crops are improved. The invention enriches a saline-alkali tolerant microorganism resource library, fills the blank of application of mangrove forest-sourced growth-promoting bacteria in saline-alkali soil, provides a new scheme for yield increase and quality improvement of saline-alkali soil grain crops, and has a wide application prospect.

Disclosed is a lactic acid bacteria-containing beverage, comprising: at least one ingredient selected from the group consisting of acetoin, diacetyl, 2-heptanone, acetic acid, propionic acid, and caproic acid. In the lactic acid bacteria-containing beverage, A + B + 200C + 10D + 10E + 10F is adjusted to 0.2 or more, where A is the concentration of acetoin (ppm), B is the concentration of diacetyl (ppm), C is the concentration of 2-heptanone (ppm), D is the concentration of acetic acid (ppm), E is the concentration of propionic acid (ppm), and F is the concentration of caproic acid (ppm). The taste disharmony is improved in the lactic acid bacteria-containing beverage.

The application relates to the field of agricultural biotechnology and plant protection, and specifically provides application of 2-heptanone in preparation of a preparation for preventing and treating plant diseases, the 2-heptanone has broad-spectrum bacteriostasis, and has strong bacteriostasis on colletotrichum gloeosporioides, colletotrichum acutatum, mycosphaerella musicola, colletotrichum caricae, fusarium graminearum, colletotrichum musae, fusarium solani, fusarium oxysporum, colletotrichum musae, and fusarium verticillioides. The fumigant for preventing and treating plant pathogens developed based on the 2-heptanone is expected to be used for preventing and treating complex diseases caused by various pathogens, or comprehensively preventing and controlling different crop diseases in a crop rotation system, and has important development value.

[Problem] To provide a new fish-attracting composition and fish feed containing the same. [Solution] A fish-attracting composition containing one or more compounds selected from group A.　(Group A) 4-heptenal, 2-nonenal, 2,6-nonadienal, 2,4-decadienal, benzyl alcohol, 1-octanol, 2-ethylhexanol, amyl alcohol, 1-octen-3-ol, ethyl maltol, 2-heptanone, 2-nonanone, 1-octen-3-one, isophorone, homofuraneol, 1,5-octadiene-3-one, cyclotene, γ-butyrolactone, 2-acetyl-3-methylpyrazine, 2,6-dimethoxyphenol, 4-ethylguaiacol, paracresol, 3-ethylphenol, guaiacol, 4-allyl-2,6-dimethoxyphenol, 3-mercapto-2-pentanone

The invention belongs to the technical field of biological medicines, and particularly relates to a method for extracting 5-hydroxy-1, 7-diphenyl-3-heptanone from galangal. According to the method provided by the invention, the compound solution of the hydroxyl imidazole ionic liquid and the anionic surfactant is used as a solvent for performing ultrahigh pressure extraction, the 5-hydroxy-1, 7-diphenyl-3-heptanone in the galangal can be extracted more quickly and efficiently, the compound solvent has good dissolving capacity, and the content of the 5-hydroxy-1, 7-diphenyl-3-heptanone in the galangal is reduced. Meanwhile, the method also has the characteristics of low volatility, recoverability and environmental friendliness, and the risk of organic solvent residue is also reduced while the yield is improved; through gradient elution of a petroleum ether-ethyl acetate system and a petroleum ether-dichloromethane system, components with different polarities can be gradually separated according to the polarity difference of target components, high-purity 5-hydroxy-1, 7-diphenyl-3-heptanone is finally obtained, compared with elution with a single solvent, the target components in a complex system can be more effectively separated, and the purity of the 5-hydroxy-1, 7-diphenyl-3-heptanone is improved. The purification effect is improved.

The present invention relates to silicone formulations comprising an oxime silane crosslinker comprising 5-methyl-3-heptanone oxime. The silicone formulations of the present invention exhibit significantly improved early cracking behavior and / or skinning times compared to silicone formulations using conventional oxime silane crosslinkers. The present invention relates to the corresponding cured silicone formulations, the use of cured silicone formulations and the use of such oxime crosslinkers in the field of silicone formulations. The present invention also relates to oxime crosslinkers.

The invention belongs to the field of pharmaceutical and chemical engineering, relates to a green preparation method of an anti-influenza virus derivative key intermediate dibenzoselenoheptanone compound, and belongs to the field of pharmaceutical and chemical engineering. According to the preparation method, N, N-dimethylformamide and oxalyl chloride are utilized to perform in-situ activation on carboxylic acid to obtain an acyl chloride intermediate, then an intramolecular Friedel-Crafts acylation reaction is performed under promotion of cheap lewis acid anhydrous AlCl3 or FeCl3 and superacid TMSOTf, the dibenzoselenoheptanone compound is efficiently prepared, and particularly, the invention relates to preparation of 7, 8-difluorodibenzo [b, e] selenoheptyl-11 (6H)-ketone. According to the synthesis method disclosed by the invention, the use of polyphosphoric acid in an existing synthesis route is avoided, and the reaction is completed in a mild temperature range of 0-25 DEG C by introducing superacid, so that the problem that the dibenzoselenoheptanone compound is unstable at a high temperature and is difficult to prepare is effectively solved; and meanwhile, the harsh requirement of repeated heating and cooling in the original process is avoided, the reaction time is remarkably shortened, the energy consumption is reduced, the comprehensive production cost is effectively reduced while the process safety is improved, and the method is more in line with the production concept of green chemical industry.

The present invention discloses a 2-hydroxy-3-pinone-based pyrimidine pH-sensitive fluorescent probe and its preparation method and application. The present invention uses 2-hydroxy-3-pinone as a raw material, and carries out an aldol condensation reaction with 6-bromo-9-ethyl-9H-carbazole-3-carbaldehyde to obtain 4-((6-bromo-9-ethyl-9H-carbazole-3-yl)methylene)-2-hydroxy-2,6,6-trimethylbicyclo[3.1.1]heptan-3-one; 4-((6-bromo-9-ethyl-9H-carbazole-3-yl)methylene)-2-hydroxy-2,6,6-trimethylbicyclo[3.1.1]heptan-3-one and 4-hydroxybenzamidine hydrochloride to carry out a cyclization reaction to obtain 4-(6-bromo-9-ethyl-9H-carbazole-3-yl)-2-( 4-(9-ethyl-6-(pyridin-4-yl)-9H-carbazol-3-yl)-2-(4-hydroxyphenyl)-6,6,8-trimethyl-5,6,7,8-tetrahydro-5,7-methanoquinazoline-8-ol; 4-(6-bromo-9-ethyl-9H-carbazol-3-yl)-2-(4-hydroxyphenyl)-6,6,8-trimethyl-5,6,7,8-tetrahydro-5,7-methanoquinazoline-8-ol and 4-pyridineboronic acid are coupled to prepare 4-(9-ethyl-6-(pyridin-4-yl)-9H-carbazol-3-yl)-2-(4-hydroxyphenyl)-6,6,8-trimethyl-5,6,7,8-tetrahydro-5,7-methanoquinazoline-8-ol. 4-(9-ethyl-6-(pyridin-4-yl)-9H-carbazol-3-yl)-2-(4-hydroxyphenyl)-6,6,8-trimethyl-5,6,7,8-tetrahydro-5,7-methanoquinazoline-8-ol can specifically recognize acidic and alkaline pH. Under acidic conditions, the fluorescence color of the solution changes from blue to yellow as the pH value in the system continues to decrease; under alkaline conditions, the blue fluorescence of the solution gradually weakens as the pH value in the system continues to increase. It can be used as a fluorescent probe for measuring pH and has many advantages such as convenient synthesis, good selectivity, and high sensitivity, and has good application prospects.

The present invention relates to a biocatalytic process for the production of aroma chemicals by carboligation using a transketolase (EC 2.2.1.1) as shown for transketolase from Geobacillus stearothermophilus and several sequence variants to catalyse the conversion of a donor molecule selected from 2-oxobutanoic acid and 3-methyl-2-oxopentanoic acid and an acceptor molecule selected from propanal and 2-methylbutanal, two identical or different donor molecules, or two identical or different acceptor molecules, thereby obtaining a coupling product in the presence of coenzyme thiamine diphosphate, the products being 3-hydroxy-5-methyl-heptan-4-one, 4-hydroxy-5-methyl-heptan-3-one, 5-hydroxy-3,6-dimethyl-octan-4-one and 4-hydroxy-hexan-3-one as precursor for filbertone.

The invention relates to the technical field of microbial engineering, in particular to lactobacillus plantarum WJ28 as well as a culture method and application of the lactobacillus plantarum WJ28. The lactobacillus plantarum WJ28 is preserved in the Guangdong Province Microbial Culture Collection Center, the preservation number is GDMCC No: 65644, the preservation date is December 16, 2024, and the preservation address is the fifth floor, No. 59 floor, No. 100, Xianlie Middle Road, Xianlie District, Guangzhou City. The lactobacillus plantarum WJ28 provided by the invention has acid resistance and acid production capacity and also has the capacity of producing high-yield ketone compounds, and when the lactobacillus plantarum WJ28 is applied to preparation of fermented dairy products, a large amount of 2-heptanone, 2-nonanone and 2-pentanone can be produced, so that the fermented dairy products are endowed with fruity flavor; meanwhile, the lactobacillus plantarum WJ28 can be used for adsorbing the micro-plastic, and can be discharged out of the body along with the eating of the fermented dairy product.

The invention belongs to the technical field of catalysis, and particularly relates to a method for selectively synthesizing 4-heptanone from water-containing butanol. According to the technical scheme, water-containing butanol is used as a raw material solution, and 4-heptanone is selectively obtained through a fixed bed tubular reactor filled with a zinc-chromium-aluminum oxide catalyst; according to the technical scheme provided by the invention, under the action of the zinc-chromium-aluminum oxide catalyst, the conversion rate of butanol is extremely high; according to the method, the aqueous butanol mixed into a homogeneous phase is used as a raw material solution, so that the generation of by-products such as butene and 2-ethyl butenal is weakened to a great extent, the selectivity of 4-heptanone is improved, the problem of carbon deposition is solved, the service life of the catalyst is ensured, under the optimized reaction conditions, the butanol conversion rate is 99.6%, the selectivity of 4-heptanone in the whole product is 67.4%, and the yield of the product is greatly improved. The selectivity in a liquid phase product is 82.4%; the invention provides a green and sustainable 4-heptanone production method, and solves the problems of tedious process, low efficiency and short service life of the traditional 4-heptanone production process.

The purpose of the present invention is to provide: an isoflavone-containing food capable of effectively suppressing the influence of an unpleasant smell; and a method for suppressing an unpleasant smell. This isoflavone-containing food is characterized by satisfying the following (a) and (b): (a) the isoflavone content is at least 1 mg / 100 g; and (b) the 2-heptanone content is at least 0.003 ppm by mass. This method for suppressing an unpleasant smell is characterized in that 2-heptanone is contained.

The invention discloses an application of 6-methyl-2-heptanone in preparation of a bemisia tabaci attractant, and belongs to the technical field of agricultural pest control by a biological control method. The invention also discloses application of 6-methyl-2-heptanone as a unique component in preparation of the bemisia tabaci attractant. The invention discloses application of 6-methyl-2-heptanone as an effective component in preparation of a bemisia tabaci attractant. The invention has the following advantages: 6-methyl-2-heptanone can excite EAG reaction of bemisia tabaci; 1 mg / mL of 6-methyl-2-heptanone has attraction to female bemisia tabaci adults and male bemisia tabaci adults, and 10 mg / mL of 6-methyl-2-heptanone also has attraction to the male bemisia tabaci adults.