47 results about "Heptanoic acid" patented technology

The invention relates to a method for synthesizing (R)-3-methylheptanoic acid. According to the method, the application range of steroid sapogenin degradation waste is further expanded. According to the method disclosed by the invention, the (R)-3-methyl-heptanoic acid can be conveniently obtained by taking the (R)-4-methyl-gamma-butyric acid lactone obtained by degrading steroid sapogenin as a raw material. According to the method provided by the invention, the use of highly toxic and controlled reagents is avoided, high-risk reactions such as hydrogenation in the prior art are avoided, and the method is mild in reaction condition and low in synthesis cost. Meanwhile, the utilization rate of steroid sapogenin resources is increased, and waste generated in the utilization process of the steroid sapogenin resources is reduced.

The invention discloses a method for removing the fishy smell of chicken gizzards through multi-bacterium combined fermentation, and belongs to the technical field of poultry byproduct processing. According to the method disclosed by the invention, the chicken gizzards are subjected to fishy smell removal treatment by compounding the saccharomycetes Y4-1 and the bacillus SB. After fishy smell removal treatment, the content of key fishy smell substances including 1-octylene-3-alcohol, octanol, hexanal, nonanal and heptanal is greatly reduced, the total content is reduced from 25.15 mu g / g to 6.02 mu g / g and is reduced by 76.06%, heptanol, geranyl acetone, methyl heptanoate, methyl caprylate, glycerol monooleate, trans-2-decenal, 2-undecenal and other substances are completely removed, and the content of the key fishy smell substances is reduced by 76.06%. Meanwhile, elegant aroma components such as benzaldehyde and phenylacetaldehyde are generated. In conclusion, the saccharomycetes Y4-1 and the bacillus SB are compounded to remove fishy smell, so that the fishy smell substances of the chicken gizzards can be effectively removed, the flavor of the chicken gizzards can be further improved, and the edible value of the chicken gizzards is improved.

The invention discloses a method for preparing omega-aminocarboxylic acid through alkaline ring-opening reaction of cyclic lactam, which comprises the following steps: adding common inorganic alkali and a proper amount of distilled water into a reaction kettle, and stirring until the common inorganic alkali is completely dissolved to obtain a solution; then adding a certain amount of cyclic lactam, and gradually heating to reflux reaction; after the reaction is completed, cooling a solution system to room temperature, dropwise adding hydrochloric acid to adjust the pH value to 7.0, and removing water to obtain a crude product of omega-aminocarboxylic acid; and adding a crystallizing agent A and a crystallizing agent B into the crude product for recrystallization, stirring for 2 hours under a low-temperature condition to obtain a large amount of white precipitate, filtering, and drying to obtain a white solid product aminoheptanoic acid. The method is simple and convenient in process operation, good in reproducibility, high in total yield, low in product metal impurity content, economical and environment-friendly, and suitable for batch industrial production.

The invention discloses a nitrilase mutant and an application of the nitrilase mutant in preparation of (S)-3-methylheptanoic acid. The nitrilase mutant disclosed by the invention has high catalytic activity and stereoselectivity, and can overcome the defects of low substrate concentration, low stereoselectivity, high cost, environmental pollution and the like in the existing method, so that 3-methylheptonitrile can be quickly catalyzed to generate (S)-3-methylheptanoic acid under high substrate concentration. In addition, the method also has the effects of good enzyme catalysis effect, high product purity, high recovery rate, simple steps, greenness, environmental protection and the like.

This invention discloses a method for preparing capsaicin-like substances by temperature-responsive eutectic solvent extraction, comprising the following steps: drying Yunnan chili peppers (after removing stems and seeds), pulverizing, sieving, and collecting the chili powder; mixing lidocaine (HBA) with six alkane-chain carboxylic acids (valerate, hexanoic acid, heptanoic acid, octanoic acid, nonanoic acid, and lauric acid) at a 1:1 molar ratio to form a homogeneous and transparent liquid, TRDES; weighing the chili powder, adding it to the TRDES aqueous solution, and extracting by shaking; after extraction, centrifuging, and diluting the supernatant to obtain capsaicin-like substances. This invention uses temperature-responsive eutectic solvent extraction to prepare capsaicin-like substances, which is simple, highly efficient, and allows for the recycling of extraction reagents, effectively saving resources. It has significant practical and industrial value for promoting the large-scale production of capsaicin-like substances and enhancing their high-value applications.

The invention relates to a biodegradable hollow plate master batch and a preparation process thereof. The biodegradable hollow plate master batch is prepared from the following raw materials in parts by weight: 30-50 parts of a first monomer; 5-30 parts of a second monomer; 3-20 parts of a third monomer; 2 to 12 parts of biomass filler; the first monomer is one of a cyclohexane dibasic alcohol compound, a polyester copolymer, organic acid esters, aromatic polyester and the like, and the second monomer is one of a dicarboxylic acid compound, succinic acid and the like; the dicarboxylic acid compound comprises adipic acid and pimelic acid. According to the invention, a first monomer is a cyclohexanediyl alcohol compound, the cyclohexanediyl alcohol compound is 1, 4-cyclohexanedimethanol, and a second monomer is succinic acid; the third monomer is polyethylene glycol terephthalate and has the characteristics of transparency, toughness, chemical corrosion resistance and the like, the mechanical property, the degradation property and the environmental friendliness of the material are practically balanced, and a material-level solution is provided for sustainable development.

To provide a beer-flavored beverage that offers excellent cooling sensation despite having a low alcohol content. [Solution] A beer-flavored beverage having an alcohol content of less than 5 v / v% and a heptyl acetate content of 0.6 μg / L or more.

The application discloses a compound, 4-methyl-5-thiazole ethyl mercaptide heptanoate, and a specific chemical structural formula is shown in the following formula: the aromatic compound is mainly applied to food essence.

The present application provides a kind of sorbitan ester antiseptic additive-free replacement sorbitan monoisopropyl adipate and its synthesis method, with sorbitol, 2-propyl heptanoic acid as raw material, by one-step reaction to obtain the target product sorbitan monoisopropyl adipate. By characterizing its sterilization, washing and emulsification, etc. The results show that the preservative and bacteriostatic performance of sorbitan monoisopropyl adipate reaches and is better than the level of currently marketed sorbitan ester, can replace sorbitan ester, and has good emulsification, washing function. The synthesized sorbitan monoisopropyl adipate is used in detergent, can replace part of traditional surfactant, through decontamination power evaluation and microbial test, the washing effect is good, the detergent after replacement does not need to add conventional preservative, can pass microbial challenge test.

The invention discloses pericarpium citri reticulatae essence and a preparation method thereof. The essence comprises a citrus aroma main body, a terpene auxiliary agent, a medicinal aroma modifier, a flavor regulator, ethanol and the balance of a solvent, wherein the citrus fruity flavor main body comprises sweet orange oil, 5-fold sweet orange oil, lemon oil and white lemon oil, the medicinal stale flavor modifier comprises anise oil, terpilenol and beta-ionone, and ethyl enanthate, acetic acid, hexanoic acid or noottanone can be selectively added as a flavor enhancer. According to the essence, through the synergistic effect of all functional components, the compound fragrance of fresh fruit fragrance, mellow medicine fragrance and deep charring of Xinhui pericarpium citri reticulatae is precisely restored, and bad tastes such as rancidity, fuel consumption and scorched bitter taste generated by oxidation or coking of roasted nuts can be effectively covered. The preparation method comprises the steps of raw material pretreatment, step-by-step mixing and temperature-controlled aging, and the product is good in stability and suitable for high-temperature processing of nut products such as melon seeds, peanuts and cashew nuts.

The present invention includes solid compositions of triglycerides with one or more fatty acids, such as triheptanoin and glycerol phenylbutyrate, and therapeutic use thereof. The solid compositions can be prepared by spray-drying or other processes.

The invention provides a one-pot preparation method of a bepedioic acid intermediate, which comprises the following steps: S1, taking DMSO (dimethylsulfoxide) as a reaction solvent, adding 7-bromo-2, 2-dimethyl ethyl heptanoate and p-methylbenzenesulfonyl methyl isocyanide, and carrying out addition reaction under the catalysis of alkali; s2, water is added for quenching excessive alkali, and then an organic solvent is added for extraction; s3, dropwise adding concentrated hydrochloric acid to carry out an acid hydrolysis reaction; s4, washing; s5, carrying out vacuum concentration on the organic phase, and carrying out ester hydrolysis reaction by taking an alkali metal compound as a catalyst; s6, adding water and dichloromethane for extraction, collecting a water layer, dropwise adding concentrated hydrochloric acid, crystallizing, filtering and drying to obtain a product. The target product is directly obtained through condensation, acid hydrolysis, ester hydrolysis and other basic chemical reactions through a one-pot method, the process is simple, operation is convenient, the reaction efficiency is improved, and the usage amount of solvents and reagents is reduced; and the method is energy-saving and environment-friendly, can further reduce environmental pollution, and has a good industrial application prospect.

The invention discloses a method and system for preparing n-heptanoic acid through hydrolysis of methyl n-heptanoate based on a reactive distillation technology, and belongs to the technical field of organic synthesis. The method comprises the following steps: continuously introducing methyl n-heptanoate and water into a reactive distillation tower filled with an H beta molecular sieve-sulfonated carbon-based composite solid acid catalyst, carrying out hydrolysis reaction at a reaction section temperature, and forming an incremental temperature gradient along the height direction of the reactive distillation tower to generate a reaction mixture containing n-heptanoic acid and methanol; the reaction mixture is subjected to rectification separation, and an n-heptanoic acid product is extracted from a tower kettle of the reactive distillation tower. The target product is high in selectivity, high in yield and high in purity (n-heptanoic acid with the purity larger than or equal to 99.5% can be obtained in a tower kettle); the catalyst is efficient and easy to separate and recover; the method is environment-friendly and less in'three wastes' emission, and accords with the green chemistry principle; the whole production cost is competitive, and industrial production is easy to realize.

The invention relates to a lubricant composition for use in fluid dynamic bearing systems, the base fluid of which is pentaerythritol tetraheptanoate, and its use.

Described herein is an invention that includes a spreadable conditioning composition comprising a blend of: a branched hydrocarbon and an ester having a kinematic viscosity of less than or equal to about 100 centistokes. The composition may be natural, for example, if each of the branched hydrocarbon and the ester are independently vegetable-derived. In addition, the composition may lack ingredients that are derived from a palm oil. In an embodiment, the composition is a blend of hydrogenated farnesene and an ester selected from glyceryl triheptanoate, heptyl undecylenate, and mixtures thereof. The composition exhibits an average spreading velocity of about 4 to about 8. Also disclosed are formulations for use in products of personal care, home / institutional care, industry, pharmaceutical and medical and veterinary care and related methods.

The invention discloses a fried bean sauce flavor essence and a preparation method and application thereof, and the fried bean sauce flavor essence is composed of the following components by weight: soybean salad oil, 2-methyltetrahydrofuran-3-mercaptan, 2-methyl-3-mercaptofuran, methyl cyclopentenolone, 2, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, the ointment is prepared from 2, 5-trimethylpyrazine, hexadecanoic acid, octadecanal, allyl disulfide, 2-acetylfuran, isoamyl acetate, soy ketones, anethole, sesame oil, ethyl maltol, ethyl enanthate, 4-ethyl guaiacol, furanone, glacial acetic acid and isovaleric acid. The fried bean sauce flavor essence disclosed by the invention has the characteristics of classic fried bean sauce flavor, strong sauce flavor and mellow meat flavor.

The invention relates to an application of 7-phenylcarbamoyl heptanoic acid in preparation of antitumor drugs, in particular to a new application of 7-phenylcarbamoyl heptanoic acid in preparation of antitumor drugs, which develops the medicinal value of 7-phenylcarbamoyl heptanoic acid and has high antitumor activity on solid tumors or hematologic tumors. In-vivo experiments show that under an effective dose, the 7-phenylcarbamoyl heptanoic acid does not cause obvious weight loss, weight change of main organs or histopathologic injury of experimental animals, so that the 7-phenylcarbamoyl heptanoic acid has a relatively good treatment window and good safety.

The invention belongs to the technical field of pentaerythritol fatty acid ester synthesis, and particularly relates to pentaerythritol mixed fatty acid ester as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing pentaerythritol, fatty acid, a catalyst and a water-carrying agent, and carrying out esterification reaction to obtain esterification reaction liquid; carrying out purification treatment on the esterification reaction liquid to obtain pentaerythritol mixed fatty acid ester; the fatty acid comprises n-heptanoic acid, n-octanoic acid and 3, 5, 5-trimethyl hexanoic acid, and the molar ratio of the n-heptanoic acid to the n-octanoic acid to the 3, 5, 5-trimethyl hexanoic acid is (1-8): (1-8): 2. According to the invention, acid raw materials for esterification reaction are reasonably selected to react with pentaerythritol, and meanwhile, the molar ratio of three fatty acids is regulated and controlled, so that the obtained pentaerythritol mixed fatty acid ester has the characteristics of low viscosity and high ignition point, thereby having excellent low-temperature fluidity and high-temperature stability; meanwhile, the pentaerythritol mixed fatty acid ester provided by the invention also has excellent electrical performance.

The present invention relates generally to methods and compositions suitable for the removal of cosmetics from skin. The cleansing composition is a two-phase composition comprising an aqueous phase comprising more than 90% by weight of water; and an oil phase comprising a combination of C9-12 alkane and coconut oil alcohol caprylate / coconut oil alcohol caprate, a combination of isododecane and half squalane, a combination of isododecane and octyl polymethylsiloxane, a combination of polydimethylsiloxane and C11-13 isoparaffin, or a combination of neopentyl glycol diheptanoate and isododecane, or any combination thereof.

The invention discloses a method and a device for preparing n-heptanoic acid. The device comprises a first mixing device, a second mixing device and a third mixing device, a material inlet of the reaction device is connected with a material outlet of the first mixing device; a material inlet of the first separation device is connected with a material outlet of the reaction device; a material inlet of the second separation device is connected with a material outlet of the first separation device; a material inlet of the first distillation device is connected with a material outlet of the second separation device; a material inlet of the second distillation device is connected with a material outlet of the first distillation device; a material inlet of the second mixing device is connected with a material outlet of the second distillation device; a material inlet of the first reaction rectification device is connected with a material outlet of the second mixing device; a material inlet of the second reactive distillation device is connected with a material outlet of the first reactive distillation device. 1-hexene is used as a raw material, n-heptanoic acid is prepared through the hydromethyl esterification reaction and the reactive distillation hydrolysis technology, the source is wide, and the raw material cost is reduced by 30% or above.

The present invention provides methods of preparing compound of Formula (I), wherein the compounds are represented by the structure of Formula (I) wherein: R1 each is independently F, Cl, Br, I, OCH3, CN or NO2; R2 each is independently identical or different C1-C5 alkyl; n1 is an integer between 1 and 5; and n2 is an integer between 1 and 4. In addition, the present invention provides a compound represented by the following structures: Compound (1a) and Compound (2), wherein X comprises: chloride, acetate, adipate, alginate, ascorbate, aspartate, benzoate, benzenesulfonate, bisulfate, borate, butyrate, citrate, camphorate, camphorsulfonate, cyclopentanepropionate, digluconate, dodecylsulfate, ethanesulfonate, fumarate, glucoheptanoate, glycerophosphate, hemisulfate, heptanoate, hexanoate, hydroiodide, maleate, 2-hydroxyethanesulfonate, lactate, methanesulfonate, 2-naphthalenesulfonate, nicotinate, nitrate, oxalate, pectinate, persulfate, 3-phenylpropionate, phosphate, picrate, pivalate, propionate, salicylate, succinate, sulfate, sulfonate, tartrate, thiocyanate, toluenesulfonate, or undecanoate salt, or any combination thereof.

The present invention relates to a food composition and the like comprising: a fermented plant material containing at least one of heptanoic acid, 2, 4-decadienal, and 3-octen-2-one; and a bean-derived food.

The invention relates to the technical field of tobacco flavors and fragrances, in particular to frankincense-style tobacco flavors and application of the frankincense-style tobacco flavors in cigarette perfuming. The tobacco essence comprises the following components in parts by mass: 0.1-25 parts of a main aroma component, wherein the main aroma component comprises a frankincense extract and frankincense essential oil; 2.01-37.2 parts of a head incense component, wherein the head incense component is prepared from acetic acid, ethyl butyrate, ethyl hexanoate, ethyl heptanoate, ethyl caprylate, ethyl caprate, gamma-heptanolactone, gamma-octanolactone, delta-octanolactone, gamma-nonanolactone, delta-decalactone, gamma-undecalactone, heliotropin, furfural, caprylic aldehyde, capric aldehyde, vanillin, ethyl vanillin, maltol and ethyl maltol; 2-20 parts of a modification component, wherein the modification component comprises a lactic acid propylene glycol reaction mixture; and 40-80 parts of a solvent. The tobacco essence perfume is applied to tobacco products, can endow frankincense fragrance, increase sweet fragrance, cover offensive odor and reduce irritation.

The invention discloses apple essence for electronic atomized liquid and a preparation method of the apple essence, and relates to the technical field of essence for electronic atomized liquid. The apple essence for the electronic atomized liquid is prepared from the following components: n-hexanoic acid, strawberry acid, stellate, isoamyl alcohol, trans-2-hexenol, peach aldehyde, n-butyl alcohol, damascenone, allyl heptanoate, trans-2-hexene acetate, citronellyl acetate, trans-2-hexenal, isoamyl isovalerate, hexyl butyrate, hexanal, ethyl n-hexanoate, butyl acetate and isoamyl acetate. The cleaning agent is prepared from leaf acetate, ethyl butyrate, diethyl malonate, hexyl acetate, leaf alcohol, hexyl alcohol, leaf butyrate, acetic acid and methyl maltol. According to the apple essence for the electronic atomized liquid and the preparation method of the apple essence, the essence can accurately simulate the fresh, sour and crisp taste of green apples, provides taste experience close to that of real fruits, is specially designed for the electronic atomized liquid, and can still keep the flavor consistency after being heated, and burnt taste or pungent smell is avoided.

The application discloses a preparation method of nanometer material with biomimetic enzyme activity and application of the nanometer material in glyphosate detection, wherein the nanometer material with biomimetic enzyme activity is heptanoic acid and Prussian blue modified Fe3O4 nanoparticles, Fe3O4@C7 / PB with core-shell structure is obtained, the core is ferroferric oxide, and the shell layer is formed by compounding heptanoic acid and Prussian blue. The application has the beneficial effect that: the Fe3O4 nanoparticles modified by heptanoic acid and Prussian blue synthesize a nanometer enzyme (Fe3O4@C7 / PB) with peroxidase-like activity, the peroxidase-like activity is higher than that of Fe3O4@C7, and Fe3O4@C7 / PB can be kept stable through single-layer PB to prevent agglomeration. We establish an anti-interference intelligent mobile phone assisted nanometer sensing platform based on peroxidase-like activity of Fe3O4 nanoparticles (Fe3O4@C7 / PB) modified by heptanoic acid and Prussian blue (PB), which is used for determining glyphosate content in tobacco, and the detection limit is 0.1 ug / mL ‑1 .

Process for preparing a catalyst comprising a nickel active phase and an alumina support, said catalyst comprising from 1% to 50% by weight, relative to the total weight of the catalyst, of elemental nickel, said nickel being distributed on the shell layer of the periphery of the support and at the core of the support, the method comprises the following phases: a) impregnating the support with a hexanoic acid solution or a heptanoic acid solution having a volume V1 of 0.2 to 0.8 times the total pore volume TPV of the support to obtain an impregnated support; b) impregnating the impregnated support obtained at the end of stage a) with a solution comprising a precursor of a nickel active phase to obtain a catalyst precursor; c) drying the catalyst precursor obtained at the end of step b) at a temperature of less than 250 DEG C.

The application relates to a binary ionic liquid lubricating additive and a preparation method and application thereof, the binary ionic liquid lubricating additive comprising ionic liquid I and ionic liquid II with a molar ratio of 1:1, wherein the ionic liquid I comprises cation precursor I and anion precursor I with a molar ratio of 1:1, the ionic liquid II comprises cation precursor II and anion precursor II with a molar ratio of 1:1, the cation precursor I and the cation precursor II are selected from any same one of ethanolamine, dimethylethanolamine and trioctylamine, and the anion precursor I and the anion precursor II are selected from any two different ones of valeric acid, heptanoic acid and di(2-ethylhexyl) phosphate. Compared with the prior art, the application has better anti-wear effect, and can make PAO4 base oil have excellent anti-wear property.

The invention relates to the technical field of flavors and fragrances, and particularly discloses an essence composition for a toilet cleaner product and a preparation method of the essence composition. The invention discloses an essence composition for a toilet cleaner product. The invention relates to a hand sanitizer which is prepared from the following raw materials in parts by weight: 0.6 to 0.8 part of citral, 0.8 to 0.9 part of geranyl acetate, 0.9 to 1.0 part of leaf alcohol, 0.9 to 1.1 parts of sorbitol ester, 0.9 to 1.1 parts of Italian lemon oil, 1.5 to 1.7 parts of allyl heptanoate, 1.6 to 1.8 parts of tricyclodecenyl acetate, 1.8 to 2.2 parts of dihydromyrcenol, 1.8 to 2.2 parts of linalyl acetate, 3 to 3.2 parts of styralyl acetate, 3.4 to 3.6 parts of ethyl 2-methylbutyrate and 4.5 to 4.9 parts of benzyl acetate. The deodorant comprises the following components in parts by weight: 7.2-7.6 parts of o-tert-butyl cyclohexyl acetate, 9.4-9.8 parts of hexyl acetate, 40-45 parts of a solvent, 1-1.3 parts of a deodorant synergistic complex and a volatile synergistic complex, the volatilization synergistic compound is prepared from the following components in parts by weight: 2.6 to 3.64 parts of a volatilization synergistic component A; and 12.6 to 13.6 parts of a volatile synergistic component B. After the essence composition for the toilet cleaner product, disclosed by the invention, is applied, the essence composition can show relatively good coordination between odor removal property and volatility.

This invention relates to the field of supramolecular chemistry, specifically to a fluorinated functionalized macrocyclic supramolecular host molecular cup, its preparation method, and its applications. It is a 2-difluoromethylbenzimidazole molecular cup host and its metal derivatives. By introducing a difluoromethyl group to moderately increase lipophilicity, the excellent properties of the trifluoromethyl macrocyclic supramolecular host are inherited while increasing water solubility. Furthermore, it can recognize cycloalkanes, alkyl carboxylic acids, especially n-heptanoic acid and n-octanoic acid, thus facilitating a series of molecular recognition studies in aqueous phase. Compared with existing technologies, this invention features a simple process, readily available raw materials, mild reaction conditions, high yield, and good reproducibility. The difluoromethyl-modified macrocyclic molecular cup H1 and the metal molecular cup H formed with palladium in this invention are also described. 1‑Pd It exhibits novel structure and high degree of functionalization, enhancing its molecular recognition ability and selectivity, and can be used in environmental remediation and water pollutant treatment.

The invention provides a synthetic method of 4-amino-1-methyl-3-n-propyl-1H-pyrazole-5-formamide, and the synthetic method comprises the following steps of: taking 4-amino-1-methyl-3-n-propyl-1H-pyrazole-5-formamide as a raw material; according to the method, 2-pentanone and dimethyl oxalate are used as raw materials for condensation reaction, then ammonolysis and nitrosation are performed to obtain 3-(hydroxyimino)-2, 4-dicarbonyl methyl heptanoate, and then hydrazine hydrate cyclization, methylation and reduction are performed to obtain a target product. The reaction avoids using dangerous processes such as mixed acid nitration and the like, and is mild in reaction condition, simple in operation steps and suitable for industrial production.