185 results about "Phenylacetaldehyde" patented technology

The invention discloses a sex pheromone composite for luring prodenia litura and a luring core thereof. The sex pheromone composite is characterized in that: the sex pheromone composite consists of the following components of sex pheromone and phenylacetaldehyde, wherein the sex pheromone consists of cis-9,trans-11-tetradecadienoic acetate and cis-9,trans-13-tetradecadienoic tetradecadienoic which are mixed in a mass ratio of 3-13: 1; and the phenylacetaldehyde is used as a synergist and accounts for 20 to 60 percent of the total mass of the components. The invention also discloses a related luring core. The researches of the invention prove that the phenylacetaldehyde can greatly improve the technology of luring and killing prodenia litura by sex pheromone, solves the problem of low control efficiency caused by multiple mating of the prodenia litura in the prior art, plays an important role in and has a great significance for the control, detection and reporting of the sexual luring insects such as the prodenia litura.

The catalyst is VIII metal oxide or VIII metal oxide loaded on silica carrier, and has the composition of MOx or nMOx/SiO2, where SiO2 is mesoporous silica of pore size 1.5-30 nm, MOx is the oxide of VIII metal Fe or Co, and n=0.5 %-8 % is the weight percentage of metal oxide in the catalyst. The catalyst is prepared through ion exchange process or soaking process. Under proper reaction condition, the styrene converting rate within 4 hr may reach 40 %, epoxide selectivity may reach 60 %, and the side product is benzaldehyde mainly except small amount of phenylacetaldehyde and benzoic acid. The catalyst has no obviously lowered styrene converting rate and epoxide selectivity after repeated use.

Compositions and lures are described which provide synthetic chemical attractants which function as highly effective attractants for male, female, or male and female moths, primarily moths of the family Noctuidae. In one aspect, the attractants provide an effective attractant amount of β-myrcene and phenylacetaldehyde or benzyl acetate. In another aspect, the attractants provide an effective attractant amount of phenylacetaldehyde and methyl-2-methoxybenzoate, but do not include methyl salicylate. By attracting moths to traps or baits, the chemical attractants provide a means for detecting, surveying, monitoring, and controlling lepidopteran pests.

The invention discloses a metabonomics-based diagnosis marker for chronic obstructive pulmonary disease and application thereof. The diagnosis marker comprises the following 28 blood plasma metabolismmarkers: phosphatidylcholine PC 16:1-36:3, phosphatidylcholine PC 26:0-22:4, phosphatidylcholine PC 26:0-22:3, phosphatidylcholine PC 47:5e, phosphatidylcholine PC 44:11e, phosphatidylcholine PC 16:0-24:5, phosphatidylcholine PC 20:2-20:3, phosphatidylcholine PC 40:10, phosphatidylcholine PC 38:9e, phosphatidylcholine PC 18:1-20:4, phosphatidylcholine PC 16:0-20:3, phenylacetaldehyde, dihydrouracil, nicotinamide, 4-methoxycinnamic acid, ketovaline, threonine, DL-3-aminoisobutyric acid, pyruvic acid, stachyose, caffeic acid, N, N-dimethylaniline, maltotriose, D(-)-gulonate-gamma-lactone, and L-asparaginase. The marker provided by the invention has good classification on metabolome data of patients suffering chronic obstructive pulmonary disease and healthy people, and can accurately distinguish the patients suffering chronic obstructive pulmonary disease from the healthy people.

The invention discloses flower fragrance aroma essence for tobacco, which is mixed by the following raw material components by weight: 0.2-0.3 part of phenylacetaldehyde, 1-2 parts of lavender oil, 0.6-0.8 part of benzyl acetate, 5-8 parts of fragrant perilla oil, 1-5 parts of magnolia essential oil, 1-5 parts of nerol, 2-5 parts of citronellol, 1-3 parts of phenylethyl alcohol, 0.05-0.2 part of sweet osmanthus extracts, 1-3 parts of dendranthema indicum ultrasonic extracts, 0.6-0.8 part of linalyl acetate, 1-5 parts of rhodinol, 2-3 parts of alpha-ionone, and 58.9-83.5 parts of 95% ethanol. The invention prevents pollen gas of the flower extracts by extraction of various flowers. The invention realizes effective compounding of single raw materials, which is a scientific and effective method. The flower fragrance aroma essence for tobacco is blended by raw materials with flower fragrance aroma, and a proper amount of the essence can be added directly into surface fragrance essence for tobacco. The essence effect is improved, and convenience for essence development is provided; the cost is low, and the usage is convenient.

The invention discloses a casing flavor for an expanded cut tobacco. The casing flavor comprises the following components in parts by weight: 8-15 parts of a Zimbabwe tobacco leaf extract, 5-12 parts of a Brazil tobacco leaf extract, 3-8 parts of honey, 1-3 parts of 10% by mass of a red jujube extract, 2-5 parts of 1% by mass of phenylacetaldehyde, 5-8 parts of 1% by mass of guaiac wood oil, 0.5-2 parts of a fenugreek fluid extract, 1-3 parts of a liquorice fluid extract, 2-5 parts of maple syrup, 1-2 parts of 10% by mass of an orris root extract, 10-25 parts of water and 12-61.5 parts of propanediol. After the casing flavor is added into the expanded cut tobacco, the sensory quality shortages of insufficient fragrance, high metal impurity gas content, high irritation, metallic flavor residues and the like in the existing expanded cut tobacco are overcome, the fragrance content is increased, the expanded cut tobacco is endowed with fragrance and sweetness of a fruit and is enriched in fragrance, the throat irritation is reduced, and the sensory quality of the expanded cut tobacco is remarkably improved.

The solid catalyst consists of VIII metal ion exchanged into molecular sieve, and has the composition of mAn+/[MI, MII]O.Al2O3.xSiO2, where [MI, MII]O.Al2O3.xSiO2 is microporous molecular sieve, MI and MII are one-valent and two-valent metal separately, x is the Si/Al ratio in the molecular sieve, An+ is VIII metal ion, m is the percentage content of VIII metal ion in the catalyst. The microporous molecular sieve is X, Y, L, Beta, Mordenite, MCM-22, etc. The VIII metal is Fe or Co. Under proper reaction condition, the styrene converting rate within 4 hr may reach 40 %, epoxide selectivity may reach 60 %, and the side product is benzaldehyde mainly except small amount of phenylacetaldehyde and benzoic acid. The catalyst has no obviously lowered styrene converting rate and epoxide selectivity after repeated use.

Absorbent articles comprising one or more complexed or encapsulated compounds compounds selected from: melonal, adoxal, trans-2-hexenal, ligustral, Floral Super, Florhydral, 5-methyl-2-thiophene-carboxaldehyde, hydratropic aldehyde, undecenal, 9-undecenal, 10-undecenal, trans-4-decenal, cis-6-nonenal, isocyclocitral, precyclemone b, (E)-2,(z)-6-nonadienal, undecyl aldehyde, methyl-octyl-acetaldehyde, Lauric aldehyde, silvial, vanillin, floralozone; are particularly effective in reducing malodors coming from degradation of proteinaceous materials such as food, menses or feces.

The invention discloses essence with prominent characteristics of freshness and sweetness and fragrance. The essence comprises the following components in percentage by weight: 0.08-0.14 wt% of 3-hydroxy-2-butanone, 0.13-0.28 wt% of 3-methyl-1-butanol, 2.3-3.6 wt% of benzyl alcohol, 0.12-0.26 wt% of phenylacetaldehyde, 0.10-0.18 wt% of linalool, 0.09-0.15 wt% of pelargonic aldehyde, 0.48-0.74 wt% of geranylacetone, 0.30-0.42 wt% of dihydroactinidiolide, 3.84-5.97 wt% of megastigmatrienone, 0.08-0.18 wt% of 3-oxo-alpha-ionol, 60-70 wt% of propylene glycol and 19-32 wt% of ethanol. The essence disclosed by the invention can stabilize the quality and style characteristics of cigarettes and reduces the fluctuation of product quality caused by difference of tobacco leaf quality.

The invention discloses a method for evaluating the flavor stability of beer. Evaluation indexes of the flavor stability of the beer cover the expression of a series of indexes which can reflect the flavor stability of beer, namely free radicals for reflecting the aging violent degree of the beer, furfural for reflecting thermal loads in the brewing process, 3-(methylthio)propionaldehyde for reflecting the control level of amino acid in the malting process, phenylacetaldehyde for reflecting oxygen loads in the brewing process and trans-2-nonenal for reflecting the fresh degree of raw materials. Compared with single indexes, a flavor stability index (FSI) is a relatively high evaluation index for beer at different aging stages and beer of different qualities and brands. The FSI index for reflecting the flavor stability of the beer is comprehensively refined from an angle of free radical chain reactions covering most of aging reactions in the beer and an angle of a key aging substance influencing the flavor of the beer. The index avoids the one-sidedness of single detection indexes, can intuitively and effectively reflect the flavor stability of the beer, and overcomes the disadvantages of subjectivity and unavailable quantization which are caused by sensory evaluation.

The invention relates to a multilevel core-shell structure magnetic nano gold catalyst and a preparation method thereof, belonging to the field of magnetic nano catalytic material. A core-shell structure composite which is formed by taking a lamellar double-hydroxyl composite metal oxide (M2+)(M3+)-LDHs as a shell and Fe3O4 magnetic nano particles as a core is taken as a carrier to load nano goldparticles, the shell (M2+)(M3+)-LDHs nano slice is vertically intersected and epitaxially grow and has a honeycomb appearance, the gold nano particles are carried and loaded on the surface of the (M2+)(M3+)-LDHs nano slice, and H2 is reduced, thus the multilevel core-shell structure magnetic nano gold catalyst Fe3O4@(M2+)(M3+)-LDHs@Au is obtained. The invention has the advantages that the multilevel core-shell structure magnetic nano gold catalyst has stronger superparamagnetism and also has excellent catalytic alcohol oxidation activity and selectivity, 1-phenethyl alcohol oxidation is takenas a probe reaction, the air is taken as an oxidant for reaction at the temperature of 80 DEG C, reaction is carried out for 3 hours, and yield of phenylacetaldehyde is 99%; meanwhile, the preparation method is simple, the catalyst is conveniently enriched and recycled by adding an external magnetic field after reaction is finished, and catalytic activity of the catalyst is not reduced after the catalyst is reused for five times.

The invention belongs to the agricultural field and in particular relates to a prodenia litura attractant composition. The prodenia litura attractant composition comprises a sex attractant, a smell compound, an antioxidant and a slow release carrier. The sex attractant is composed of 9Z, 11E-tetradecyl acetate and 9Z, 12E-tetradecyl acetate; the smell compound is composed of phenylacetaldehyde, cis-3-hexenyl acetate and limonene. The prodenia litura attractant composition has a very good induction effect to prodenia litura and can be used for preventing and treating the injurious insect prodenia litura. In addition, the smell compound screened has very good enhancing action to the sex attractant, and in particular, the preferred smell compound comprises phenylacetaldehyde, cis-3-hexenyl acetate and limonene in a ratio of 2: 1: 1.

The invention discloses a caramel essence used in coffee and a preparation method thereof. The caramel essence used in the coffee is composed of a thermal-reaction-typed caramel essence and a blended-typed caramel essence, wherein the mass of the blended-typed caramel essence is 0.01-1.00% of that of the thermal-reaction-typed caramel essence. The thermal-reaction-typed caramel essence consists of following components, by weight, 3.33% of glycine, 7.98% of anhydrous glucose, 57.65%-62.08% of 1,2-propylene glycol and the balance distilled water. The blended-typed caramel essence consists of following components according to a certain mass percentage ratio: 2,3-dimethylpyrazine, 2,5-dimethylpyrazine, 2,3,5-trimethylpyrazine, furfural, furfuryl alcohol, phenylacetaldehyde, 10% of capraldehyde, 10% of furanone, methyl cyclopentenolone, 5% of ethyl maltol, cocoa powder tincture and the balance propylene glycol. The caramel essence used in the coffee is soft and natural in fragrance, has a thick fragrance, is mellow in mouthfeel, is less in addition amount when being used in coffee products and has a significant effect.

The invention discloses a method for oxidizing styrene. According to the method, the styrene comes into contact with an oxidant under the condition of oxidation reaction. The method is characterized in that the oxidant is an ozone-containing gas. According to the method, the phenylacetaldehyde selectivity is high, and the selectivity of styrene oxide is greatly improved in the presence of a titanium-containing catalyst.

The invention discloses a bacteriostatic composition and application thereof in bacteriostatic laundry detergent. The bacteriostatic composition which is microencapsulated is prepared by using p-methyl phenylacetaldehyde and/or p-methoxy phenylacetaldehyde to prepare low-molecular-weight chitosan quaternary ammonium salt and using the low-molecular-weight chitosan quaternary ammonium salt, soybean extract and olive leaf extract for preparation. The bacteriostatic composition has good antibacterial effect on Gram-negative bacteria, positive bacteria, moulds and saccharomycetes and plays a role in coordinated bacterium inhibition and sterilization, and bacteriostatic effect is improved; the bacteriostatic composition is high in stabilizer, lasting in bacteristatic effect and suitable for being applied in preparing the bacteriostatic laundry detergent.

The invention belongs to the field of compound preparation, and specifically discloses a preparation method of an anti-tumor medicine chlorambucil. The preparation method comprises the steps of performing a Vilsmeier reaction on a raw material N,N-dihydroxyethylaniline and phosphorus oxychloride and DMF so as to prepare 4-[bi(2-chloroethyl)amino]benzaldehyde, then performing a witting reaction on4-[bi(2-chloroethyl)amino]benzaldehyde and methoxymethyl triphenylphosphonium chloride so as to prepare 4-[bi(2-chloroethyl)amino]-BETA-methoxystyrene, reacting under an acid condition so as to obtain4-[bi(2-chloroethyl)amino]phenylacetaldehyde, and finally, reacting with Meldrum's acid in triethylamine and formic acid systems so as to prepare a target product. The raw material N,N-dihydroxyethylaniline is cheap, has a wide source and is easy to obtain; the whole reaction process has high yield, production conditions are mild, the steps are short, and post treatment and purification are easyto operate, so that the preparation method is applicable to commercial large scale production, and meets the rapidly growing market demands.

The present invention discloses a kocuria kristinae for improving the flavor and quality of a fermented soy sauce and an application of the kocuria kristinae and relates to the field of microbial technical applications of foods. The kocuria kristinae is deposited in the China General Microbiological Culture Collection Center on November 26, 2019. The kocuria kristinae is separated from soy sauce residues of a traditional high-salt liquid-state soy source, has good salt tolerance and growth activity, is beneficial to the generation of various aroma substances such as 3-(methylthio)propionaldehyde, 1-octen-3-ol, phenylacetaldehyde and ethyl acetate in the soy sauce and is suitable for application to a traditional food fermentation process. The soy sauce prepared under the participation of the kocuria kristinae provided by the present invention is strong in sauce aroma, mellow in taste and beneficial to the further improvement of quality of the soy sauce.

The invention discloses a method for synthesizing 1,2,3-triazole compound through a one-pot two-step method. An iodo-aryl compound, sodium azide, 1,8-diazabicyclo[5.4.0]-11-carbon-7-alkene and a catalyst cuprous iodide are added into a reaction container containing a solvent dimethyl sulfoxide, the reaction mixture is stirred and react at the temperature of 95 DEG C, and TLC tracking detection is carried out till reacting is complete; after the reaction temperature is reduced to room temperature, a phenylacetaldehyde compound or a terminal-based alkyne compound is added into the reaction container, after the reaction is completed, water and ammonium hydroxide are added into the reaction mixture, the extraction is carried out with dichloromethane three times, washing is carried out with saturated salt water once, drying and suction filtration are carried out, a solvent is spun out, column chromatography purification is carried out, and the target product is obtained. The method is simple in process, convenient to operate, mild in reaction condition, short in reaction time and high in target product yield.

The invention relates to an agonist of deacetylase and application thereof, and belongs to the technical field of medicines. The agonist of deacetylase comprises cinnamyl aldehyde, cinnamyl aldehyde structural analogues or cinnamyl aldehyde derivatives, wherein the cinnamyl aldehyde structural analogues comprises phenylpropionaldehyde, phenylacetaldehyde, benzaldehyde, propionaldehyde, acetaldehyde or formaldehyde; the cinnamyl aldehyde derivatives comprise alpha-bromo cinnamaldehyde, alpha-bromo p-chloro cinnamaldehyde, alpha-bromo p-methyl cinnamaldehyde, alpha-methyl cinnamaldehyde, alpha-hexylcinnamaldehyde, 4-chloro cinnamaldehyde, 4-methoxy cinnamaldehyde, 4-fluoro cinnamaldehyde, 2-nitro cinnamaldehyde and p-chloro cinnamaldehyde. The regulation effect of an ARG-NO pathway in a high-glucose induced endothelial cell injury model proves that the agonist of the deacetylase has a protective effect on vascular endothelial injury as an agonist of HDAC.

The invention relates to a colorimetric ratio-type acid-base fluorescent probe and a preparation method and an application thereof. The colorimetric ratio-type acid-base fluorescent probe has a conjugated structure of hemicyanine and p-hydroxy phenylacetaldehyde shown as a formula 1, a formula 2, or a formula 3. The colorimetric ratio-type acid-base fluorescent probe has good water-soluble performance, observation is carried out by naked eyes in a pH scope of 6.0-8.0, the liquid is yellow when the pH value is less than 7.0, the color is darker when the pH value is smaller, the liquid is red when the pH value is greater than 7.0, and the color is darker when the pH value is larger. The fluorescence detection test shows that 455 nm wavelength excitation is employed, in the pH scope of 6.6-8.0, the pH change and the fluorescence intensity ratio I530 nm/I557 nm change has a good linear relation, the fluorescent probe has colorimetric ratio characteristics under acid-base response, and the colorimetric ratio-type acid-base fluorescent probe has good application in autophagy process detection of tumor cells.

The invention discloses rose essence used for perfume, which is characterized by comprising the following components by weight percent: 4.8-5.0 percent of rose absolute, 0.8-1.0 percent of coldly ground ginger oil, 10.0-12.0 percent of phenethyl alcohol, 3.5-4.0 percent of rose, 18.0-22.0 percent of geraniol, 10.0-11.0 percent of santalwood, 20.0-24.0 percent of citronellol, 5.0-6.0 percent of cedar wood oil, 0.7-0.9 percent of phenylacetaldehyde dimethyl acetal, 4.0-5.0 percent of isolongitolanone, 4.0-5.0 percent of ionone, 0.1-0.2 percent of civetta paste, 0.1-0.2 percent of rose oxide, 0.1-0.3 percent of musk tincture and 0.3-0.5 percent of damascenone. The rose essence used for the perfume in the formula is suitable for the perfumed products of white cream, emulsion, fragrant sirup and the like, does not have the defect of discoloration and has the advantages of pure and abundant fragrance, strong permanence, very little use quantity and the like.

An attractant for the male moth of rice leaf roller is proportionally prepared from phenylmethanol, phenylformaldehyde and phenylacetaldehyde the rough mixing. Its advantages are high effect and high safety.

The invention discloses an agricultural pesticide emulsifier. The agricultural pesticide emulsifier is prepared from the following components in parts by weight: 5-10 parts of xylene, 4-9 parts of acrylic acid, 3-9 parts of ammonium sulfate, 1-5 parts of phenylacetaldehyde phenyl polyoxyethylene ether, 1-5 parts of alum, 2-6 parts of decanol, 10-20 parts of hexadecanol, 5-15 parts of vegetable oil, 2-7 parts of sodium persulfate, 3-9 parts of a tobacco stem extracting solution, 2-6 parts of allicin oil and 2-6 parts of camphorated oil. The agricultural pesticide emulsifier has good low-temperature fluidity, a good emulsifying performance, low using amount, and good diffusion ability, is low in price, and can be stored stably for a long time.