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154 results about "High alcohol" patented technology

A pretreatment method and application of an alumina-supported copper oxide-rare earth metal oxide catalyst

The present invention discloses a pretreatment method and application of an alumina-supported copper oxide-rare earth metal oxide catalyst. The pretreatment method is as follows: adding the alumina-supported copper oxide-rare earth metal oxide catalyst used for the reaction of ethanol to higher alcohols into a mixture of one or several C1-C8 alcohols, impregnating at 10-90 °C for 1-24 h, filtering to remove the excess alcohol after impregnation is completed, and then drying in an oven at 40-200 °C for 1-24 h to complete the pretreatment of the catalyst. The present invention provides the application of the alumina-supported copper oxide-rare earth metal oxide catalyst pretreated by the pretreatment method in the reaction of ethanol to higher alcohols. The pretreatment method of the present invention significantly increases the selectivity of the product higher alcohols and keeps the conversion rate of ethanol unchanged or slightly improved, thus solving the problem that it is difficult to balance both the conversion rate and selectivity in the prior art.
Owner:ZHEJIANG UNIV OF TECH

Carbon-coated nickel-based super-hydrophobic catalyst as well as preparation method and application thereof

The invention discloses a carbon-coated nickel-based super-hydrophobic catalyst as well as a preparation method and application thereof, and belongs to the technical field of catalysts and high alcohol synthesis. The preparation method comprises the following steps: dissolving nickel salt and citric acid in water, and then heating and stirring the obtained mixed solution to obtain a precursor; roasting the precursor in an inert atmosphere to obtain a carbon-coated nickel-based catalyst; and carrying out ball-milling mixing on the carbon-coated nickel-based catalyst and polytetrafluoroethylene to obtain the carbon-coated nickel-based super-hydrophobic catalyst. According to the invention, the carbon-coated nickel-based catalyst is firstly prepared, then the carbon-coated nickel-based catalyst is coupled with the hydrophobic polymer polytetrafluoroethylene to form a new super-hydrophobic catalyst, and the nickel-based catalyst and the polytetrafluoroethylene are subjected to ball-milling mixing, so that the hydrophobic property of the nickel-based catalyst is improved, the water poisoning phenomenon of the catalyst is relieved, and further coupling of low-carbon alcohol to higher alcohol is promoted; the yield of the high alcohol and the selectivity of the C6 < + > high alcohol are improved, and the method has a wide application prospect.
Owner:GUANGDONG UNIV OF TECH

Bio-safety cabinet with double-layer filtering function

The utility model discloses a biosafety cabinet capable of double-layer filtration, which comprises a cabinet body, an operation chamber is arranged in the cabinet body, and a bottom air duct is arranged at the bottom end of the operation chamber. By arranging the reducing pipe, the exhaust pipe, the exhaust outlet, the filter box, the exhaust filter, the air disc and the high alcohol, double-layer filtration of exhausted air is achieved, air can be exhausted into the reducing pipe through operation of the exhaust fan, airflow can be concentrated and pressurized through arrangement of the reducing pipe, meanwhile, the air is conveyed into the filter box, and the filtering effect is improved. The air disc divides air into a plurality of small bubbles and increases the contact area with the high-alcohol, the high-alcohol can kill bacteria in the air and adsorb particle dust and various suspended solids, then the air is conveyed into the air exhaust opening, secondary filtering is conducted when the air passes through the air exhaust filter, and the exhausted air is purified; therefore, the exhausted air does not carry germs, the environment is prevented from being polluted, and the use safety is improved.
Owner:SHANGHAI TANGNUO BIOTECHNOLOGY CO LTD

Saccharomyces cerevisiae strain Y24 and application thereof in wine brewing

The invention relates to saccharomyces cerevisiae and application thereof in wine brewing. The saccharomyces cerevisiae strain is saccharomyces cerevisiae Y24 and is preserved in the general microbiological center of the China Committee for Culture Collection of Microorganisms on March 10, 2025, and the preservation number of the saccharomyces cerevisiae strain is CGMCC (China General Microbiological Culture Collection Center) NO. 33773. The saccharomyces cerevisiae strain is a saccharomyces cerevisiae strain. The saccharomyces cerevisiae Y24 strain can grow under the conditions that the alcoholic strength is 18% vol, the pH value is 2, the sugar content is 60% and the temperature is 4 DEG C, has good high-alcoholic strength, high-acid and high-sugar endurance capacity, and meets the low-temperature fermentation requirement of wine. Meanwhile, in wine fermented by the saccharomyces cerevisiae Y24 strain, the content of dry extracts capable of enriching wine bodies is higher, the content of aroma components is higher, and the content of undesirable component methanol is lower.
Owner:TIANJIN ACAD OF AGRI SCI +1

Saccharomyces cerevisiae strain Y26 and application thereof in wine brewing

The invention relates to saccharomyces cerevisiae and application thereof in wine brewing. The strain is Saccharomyces cerevisiae Y26, and is preserved in the general microbiological center of the China Committee for Culture Collection of Microorganisms on March 10, 2025, and the preservation number is CGMCC NO.33774. The invention further discloses a preparation method of the Saccharomyces cerevisiae strain. The saccharomyces cerevisiae Y26 strain can grow under the conditions that the alcoholic strength is 18% vol, the pH value is 2, the sugar content is 60% and the temperature is 4 DEG C, has good high-alcoholic strength, high-acid and high-sugar endurance capacity, and meets the low-temperature fermentation requirement of wine. Meanwhile, in wine fermented by the saccharomyces cerevisiae Y26 strain, the content of dry extracts capable of enriching wine bodies is higher, the content of aroma components is higher, and the content of undesirable component methanol is lower.
Owner:TIANJIN ACAD OF AGRI SCI +1

Anaerobic gas-feeding bacterium capable of converting synthesis gas into alcohol compounds

The invention provides an anaerobic gas-feeding bacterium capable of converting synthesis gas into an alcohol compound, the anaerobic gas-feeding bacterium is a Clostridium autoethanogenum E53 strain, and the preservation number of the anaerobic gas-feeding bacterium is CGMCC (China General Microbiological Culture Collection Center) No.46261. The invention further provides a preparation method of the anaerobic gas-feeding bacterium. According to the invention, a Clostridium autoethanogenum E53 strain with high alcohol yield is obtained through chemical mutagenesis screening, through optimization of culture conditions, especially addition of sodium bicarbonate in a culture system and control of the pH value of the culture system, the highest concentration of thalli fermented by anaerobic aerophagetes E53 and the capability of fermenting and accumulating alcohols are improved, the maximum cell concentration of the E53 strain can reach OD600nm-2.1 Abs, and the highest alcohol yield is 7.5 g / L.
Owner:TIANJIN BOAI BIOTECHNOLOGY DEVELOPMENT CO LTD

Lactobacillus clavuliformis Z5-1 as well as fungicide and application of lactobacillus clavuliformis Z5-1

The invention provides lactobacillus coryniformis Z5-1 as well as a culture method and application thereof, and belongs to the technical field of food fermentation. The preservation number of the lactobacillus clavuliformis Z5-1 is CGMCC (China General Microbiological Culture Collection Center) No.31547, the lactobacillus clavuliformis Z5-1 is preserved in the China General Microbiological Culture Collection Center (CGMCC) on August 5, 2024, and the lactobacillus clavuliformis Z5-1 has good degradation and conversion effects on ethanol. The lactobacillus clavuliformis Z5-1 is inoculated in a high-alcohol-degree or other fermentation environment, so that ethanol in the environment can be effectively degraded, or ethanol generated in the fermentation process is converted into various flavor substances, and the quality of fermented food is improved; and the strain culture mode is simple and convenient to operate, low in cost and easy to popularize and apply in laboratories and industrial production.
Owner:LIAONING ACAD OF AGRI SCI

Method for regulating and controlling total acid content of primary liquor in Maotai-flavor liquor brewing

The invention discloses a method for regulating and controlling the total acid content of primary liquor in Maotai-flavor liquor brewing, and belongs to the technical field of liquor brewing. Red tassel glutinous sorghum is crushed until the crushing degree is 10%-20%, preferably 13%-15%; the method comprises the following steps: mixing the crushed sorghum and fermented grains obtained after sand fermentation according to a mass ratio of 1: 1, and cooking in retort type gelatinization equipment at a conventional gelatinization temperature for 105-120 minutes, preferably 110 minutes; by adopting the method disclosed by the invention, the content of acetic acid in the fermented grains is obviously reduced by 13.82% at the end of fermentation, the content of acetic acid and the content of total acid in primary wine are respectively obviously reduced by 9.68% and 14.47%, the content of lactic acid is not obviously changed, the content of normal propyl alcohol is synchronously obviously reduced by 14.96%, and the content of other higher alcohols is stable. The method is simple in process, does not need new equipment, is completely compatible with the existing production line, and can effectively stabilize and improve the quality of the primary wine base.
Owner:GUIZHOU DIAOYUTAI GUOBIN WINE CO LTD

Process for producing higher alcohols

The invention relates to a method for producing higher alcohols. The invention also relates to a reaction mixture and a method for producing at least one higher alcohol, said method comprising a reaction mixture comprising a mixed culture of a first and a second microorganism in an aqueous medium comprising carbon monoxide gas, wherein the first microorganism is an acetogenic microorganism capable of converting a carbon source to acetic acid and / or ethanol; and-the second microorganism is selected from the group consisting of Clostridium kluyveri capable of converting acetic acid and / or ethanol to form an acid, and C. carboxidivorans; wherein the first microorganism is further capable of converting the acid to the corresponding higher alcohol, and the higher alcohol comprises at least 6 carbon atoms.
Owner:EVONIK OPERATIONS GMBH

Fermented wine rich in mellow and sweet taste and preparation process thereof

According to the fermented wine rich in alcohol and sweetness and the preparation process thereof, high-sugar-degree grain liquid (wort) is adopted as a fermentation substrate, fermentation is controlled through functional strains in a labor division and staged mode, and the technical problems that in a traditional process, glycerol synthesis is limited, and a wine body is thin, sour and astringent are effectively solved. The content of glycerol is increased under the pure fermentation condition, meanwhile, the content of by-products such as residual sugar and acetic acid is reduced, and high alcoholic sweetness and wine flavor coordination are synchronously achieved in a pure biological fermentation framework.
Owner:JING BRAND

A high-purity ginkgo wine and its preparation method

This invention belongs to the field of alcoholic beverage processing technology, specifically relating to a high-purity ginkgo wine and its preparation method. The preparation method comprises the following steps: ginkgo slurry undergoes preliminary enzymatic hydrolysis with neutral protease and amylase, followed by secondary enzymatic hydrolysis with pectinase and sodium bisulfite; brewing yeast fermentation broth is added for pre-fermentation; glutamine transaminase, *Saccharomyces cerevisiae* fermentation broth, and *Candida valerate* fermentation broth are added for post-fermentation; and finally, distillation and filtration are performed to obtain the ginkgo wine. This invention achieves complete decomposition and fermentation of ginkgo kernels through a two-step enzymatic hydrolysis and two-step fermentation process. The preparation method has advantages such as simple process and low cost, which is beneficial for industrial production; the prepared ginkgo wine has advantages such as clarity, strong aroma, high alcohol content, and low acidity.
Owner:SHANDONG GINKGO DEV ASSOC

Nitrogen-doped carbon-wrapped nickel catalyst for synthesis of higher alcohols by assembly of bioethanol and preparation method therefor

The present invention relates to a nitrogen-doped carbon-wrapped nickel catalyst for synthesis of higher alcohols by assembly of bioethanol and a preparation method therefor. The preparation method includes the following steps: S1, subjecting a soluble nickel salt and polyacrylamide to stirring with water, completely dissolving and then drying to obtain a precursor, where a molar ratio of the soluble nickel salt to polyacrylamide is 1:(0.5-8); and S2, subjecting the precursor to pyrolysis in an inert atmosphere at 300° C.-800° C. for 1-6 hours to obtain the nitrogen-doped carbon-wrapped nickel catalyst. The catalyst prepared by the method of the present invention has an active phase with high dispersity which enables synthesis of higher alcohols by efficient assembly of small molecules, and has relatively high stability which can still maintain high conversion rate and high yield for organic phase after 10 times of repeated use.
Owner:GUANGDONG UNIV OF TECH

Film-forming composition for skin

This film-forming composition for skin contains the following components (A) to (E). A phospholipid (A) A sterol ester (B) A C10-24 higher alcohol (C) Water (D) Water-insoluble fibers (E) having an average fiber diameter of 0.3 μm to 5 μm and an average fiber length of 20 μm to 300 μm In the film-forming composition for skin, the mass ratio (B) / (E) of component (B) to component (E) is 1 to 15. The water-insoluble fibers of component (E) preferably have a variation coefficient value of the fiber length of 40% to 100%.
Owner:KAO CORP

A liquor harmful substance synchronous identification method based on gas phase diffusion pretreatment

PendingCN122651687AFood safetyLiquor sample
The present application belongs to the technical field of food safety rapid detection, and discloses a liquor harmful substance synchronous identification method based on gas phase diffusion pretreatment. The present application utilizes the physical characteristics that the volatility of methanol and formaldehyde is significantly higher than that of ethanol and esters, carries out gas phase diffusion pretreatment under the condition that a closed container is at 40 DEG C to 60 DEG C, makes methanol and formaldehyde preferentially volatilize and be captured by two independent absorption chromogenic liquids respectively, makes ethanol and esters mainly remain in the liquor sample liquid, and the ethanol concentration in the absorption liquid is relatively reduced. Thus, the chromogenic reaction is carried out in the absorption liquid system in which the ethanol concentration is significantly reduced, and it is not necessary to dilute the liquor sample to low alcohol degree in a large amount, so that the technical problem that the traditional colorimetric method is seriously interfered by high alcohol degree ethanol and ester matrix is fundamentally solved.
Owner:SICHUAN YASHI TECH CO LTD

Methods for producing higher alcohols from waste plastic pyrolysis oil and the higher alcohols obtained therefrom

A method for producing a higher alcohol from a waste plastic feedstock is disclosed, comprising: (a) providing a hydrocarbon feed stream comprising a pyrolysis oil feed obtained from pyrolysis of plastic waste, wherein the pyrolysis oil comprises at least 20 wt % higher olefins with a carbon number in the range C5-C20, based on its total hydrocarbon content; (b) contacting the hydrocarbon feed stream with synthesis gas under hydroformylation conditions in the presence of a hydroformylation catalyst and recovering a hydroformylation product; (c) subjecting the hydroformylation product to hydrogenation and / or a distillation to recover a higher alcohol product.
Owner:EXXONMOBIL CHEMICAL PATENTS INC

Stabilized semisolid food products

ActiveUS12672663B2BiotechnologyLiquid food
The invention relates to compositions and methods for stabilizing and enhancing the viscosity of semisolid compositions, and to the production of stabilized alcohol-containing semisolid food products. More specifically, embodiments of the invention relate to novel stabilizers for semisolid compositions, to alcohol-containing semisolid food compositions comprising them, and to processes for the preparation and use thereof. Further, the invention in embodiments thereof provides non-liquid food products containing a high alcohol content, which are stable at room temperature and do not necessitate the use of gelling agents or other chemical stabilizers.
Owner:CREAMCOL LTD

Hair conditioner manufacturing method

The present invention aims to provide a manufacturing method that allows for the production of a hair conditioner containing a cationic surfactant and a higher alcohol, forming an α-gel, without the need to adjust heating or cooling rates. [Solution] A method for producing a hair conditioner, comprising the step of mixing a composition (A) with a melting point of 50°C or higher with water at 5 to 45°C, wherein the composition (A) contains a cationic surfactant and a higher alcohol. The molar ratio of the cationic surfactant to the higher alcohol (catenic surfactant:higher alcohol) is 1:1 to 1:15.
Owner:SANYO CHEM IND LTD

Salt-tolerant Jezhou bacillus capable of tolerating higher alcohol and application thereof

The invention relates to a high-alcohol-tolerant salt-tolerant microorganism Jezhou bacillus and application thereof, and belongs to the technical field of microorganisms. The preservation number of the Jejubacter sp. DT01IM3 is CGMCC (China General Microbiological Culture Collection Center) No.28463, and the preservation number of the Jejubacter sp. The Jezhou bacillus DT01IM3 can normally grow under the conditions of relatively high salt concentration (0-150g / L) and relatively high higher alcohol concentration (0-8000mg / L), and the problem of tolerance of microorganisms to higher alcohols is solved, so that a foundation is laid for producing higher alcohols by the microorganisms.
Owner:BEIJING INST OF TECH TANGSHAN RES INST

Powder cosmetic

Provided is a powder cosmetic having excellent impact resistance, usability, and adhesion. This powder cosmetic contains (a) a powder, (b) 0-15 mass% inclusive of an oil component, (c) more than 0-19 mass% inclusive of a polyol, and (d) 0.1-10 mass% inclusive of a higher alcohol, the total content of the (b) oil component, the (c) polyol, and the (d) higher alcohol being 5.0-20 mass% inclusive, and the content of the (b) oil component, the (c) polyol, and the (d) higher alcohol being 0.1-10 mass% inclusive. The ratio of the amount obtained by adding the content of the polyol (c) and the content of the higher alcohol (d) to the total content is 0.10-1.0 (inclusive).
Owner:SHISEIDO CO LTD

Aerosol composition

An aerosol composition including an aerosol stock solution containing a cationic surfactant (A) and a linear saturated higher alcohol (B), and a propellant (C) containing carbon dioxide. The component (A) containing a mono-long-chain-alkyl cationic surfactant (A1). A content of the component (A) being 0.9% by mass or more and less than 6.0% by mass in the aerosol stock solution. A molar ratio [(B) / (A1)] of the component (B) with respect to the component (A1) being 3.0 or more and 7.0 or less in the aerosol stock solution. A content of the component (A1) in the component (A) being 90% by mass or more and 100% by mass or less, and a difference between a number of carbon atoms of the long-chain alkyl in the component (A1) and the number of carbon atoms of the component (B) being 0.
Owner:KAO CORP

Preparation method of catalyst for producing biological aviation kerosene by using high-carbon alcohol as raw material and adopting slurry reactor

The invention discloses a preparation method of a catalyst for producing biological aviation kerosene by using high alcohol as a raw material and adopting a slurry reactor. The preparation method comprises the following steps: (1) respectively dissolving a nickel source and an organic amine source in methanol; slowly dripping the methanol solution of the organic amine source into the methanol solution of the nickel source under stirring; after dropwise adding, heating and carrying out reflux reaction for 30-90 minutes; filtering while hot, washing with methanol, collecting solid, and drying in vacuum to obtain the organic nickel catalyst. (2) respectively acidifying aqueous solutions of an organic amine source and a molybdenum source with diluted hydrochloric acid until the pH is 2-4; slowly dripping the acidified organic amine source into the acidified molybdenum source under stirring; after dropwise adding, stirring and reacting for 30-90 minutes; filtering, washing, collecting solids, and drying in vacuum to obtain the organic molybdenum catalyst. And (3) compounding the organic nickel catalyst and the organic molybdenum catalyst according to the mass ratio of 1: (1-10) to obtain the catalyst. The catalyst is simple in preparation process and low in energy consumption, and has high catalytic activity and high hydrodeoxygenation selectivity when being used for producing biological aviation kerosene by using high-carbon alcohol as a raw material and adopting a slurry reactor.
Owner:LONGYAN ZHUOYUE NEW ENERGY CO LTD

Production method for improving alcohol content of grain fermented wine

The invention relates to a production method for improving the alcohol content of grain fermented wine. The method comprises the following steps: freezing fermented grain liquor with low alcohol content into a solid state (ice body) or a solid-liquid mixed state (ice body and fermented liquor with high alcohol content), transferring energy to the grain liquor, and dissolving and separating to improve the alcohol content. The solid state formed by freezing the grain fermented wine is called as an ice body. In the dissolving and separating process, the alcohol content of the solution is gradually reduced, and the solution (grain liquor) is retained in a segmented manner, so that the solutions (grain liquor) with different alcohol contents are obtained. The grain liquor meeting the target alcohol content is transferred to the next link to be stored (utilized). The grain liquor which does not conform to the target alcohol content can be repeatedly frozen and concentrated through the method, so that the alcohol content of the grain liquor is continuously improved. The invention provides a method for improving the alcohol content of low-alcohol-content fermented wine at normal pressure and low temperature, and provides a new way and method for producing high-alcohol-content spirit. The method is simple to operate and high in efficiency, can be operated at normal pressure and low temperature, and protects flavor substances, healthy substances and various nutrient substances of the grain liquor while improving the alcohol content (for example, the alcohol content of the grain liquor can be improved to the alcohol content of strong liquor).
Owner:CHONGYI FUBAILE DEVELOPMENT CO LTD +1

Targeted extraction method for flavor substances of Maotai-flavor liquor

The invention relates to the technical field of food processing, in particular to a targeted extraction method for flavor substances of Maotai-flavor liquor, which adopts the following preparation method: S10, pretreatment and analysis; s20, carrying out primary reduced pressure rectification; s30, selective extraction with a secondary solvent; s40, molecular imprinting purification; S50, recombination callback; according to the method, target flavor substance components are extracted from Maotai-flavor liquor with high selectivity and high efficiency, irritant and bad flavor substances such as ethanol, higher alcohol and furfural are removed to the greatest extent, concentrated base liquor with mellow flavor and smooth taste is obtained, and a process capable of realizing industrial and standardized production is provided; the invention provides a core raw material for the high-quality Maotai-flavor pre-prepared cocktail, solves the problems of rough taste and unbalanced flavor of the traditional Maotai-flavor cocktail, realizes standardized and customizable production of the flavor of the base wine, improves the acceptability and re-purchase rate of consumers, and provides a core raw material technical support for pre-prepared wine products.
Owner:SHENZHEN ZHONGLAN IND DEVELOPMENT CO LTD

Functional saccharomyces cerevisiae and application thereof in fermentation of pueraria polysaccharide

The invention provides functional saccharomyces cerevisiae and application thereof in fermentation of pueraria polysaccharide, and belongs to the technical field of microbial fermentation. The invention discloses a saccharomyces cerevisiae Y25, which has the physiological characteristics of high ethanol yield, low higher alcohol yield, high ester yield and good tolerance to ethanol, acid and high temperature, can improve the quality of white spirit and enrich and coordinate the flavor of the white spirit, and can be used for fermenting kudzuvine root polysaccharide, so that the obtained fermented polysaccharide is high in yield, strong in oxidation resistance and high in yield. The polysaccharide content is increased by 9.79% compared with commercial Angel yeast, and the DPPH free radical scavenging rate and the hydroxyl free radical scavenging rate are respectively increased by 10.32% and 18.78% compared with the commercial Angel yeast. The saccharomyces cerevisiae Y25 disclosed by the invention has far-reaching social and economic significance on enhanced utilization of functional brewing microbial resources and innovation and upgrading of a traditional brewing process.
Owner:中原食品实验室

Silicon-free anti-webbed agent for latex gloves as well as preparation method and application of silicon-free anti-webbed agent

The invention relates to the technical field of functional aids, in particular to a silicon-free anti-webbed agent for latex gloves as well as a preparation method and application of the silicon-free anti-webbed agent. The invention relates to a silicon-free anti-webbing agent for latex gloves. The silicon-free anti-webbing agent comprises the following raw materials in percentage by weight: 5-15% of a raw material A, 5-15% of a raw material B, 5-10% of a raw material C and the balance of water, the raw material A is one or more of lipid and high-carbon alcohol; the raw material B is fatty acid; the raw material C comprises a pH regulator and fatty amine. The cloud point of the anti-webbed agent can reach 80.6-85.3 DEG C, the surface tension can reach 33.4-30.7 dynes / cm, and the anti-webbed agent is good in compatibility with a release agent salt solution and free of floating oil. The anti-webbing agent is completely and mutually soluble with natural latex and butyronitrile latex, and does not float oil at high temperature; the qualified rate of the latex gloves prepared from the anti-webbed agent disclosed by the invention can reach 97.5-99.8%.
Owner:SAIFEI (TIANJIN) NEW MATERIAL TECH CO LTD

Dual-mode cooperative detection method for unsaturated fatty acid in Baijiu

The invention discloses a dual-mode cooperative detection method for unsaturated fatty acid in Baijiu, and relates to the technical field of food detection. According to the method, aiming at the characteristic of a high alcohol ester matrix of the white spirit and the detection pain point that unsaturated fatty acid is easy to oxidize and large in content span, selective enrichment and matrix purification are performed on a white spirit sample through a silanization modified C18 solid-phase extraction small column, and then low-temperature anti-oxidation derivatization is completed through matching of a composite derivatization reagent and an anti-oxidation system. Then, the palmitic acid, the oleic acid and the linoleic acid are quantified by adopting a gas chromatography-mass spectrometry method, meanwhile, the alpha-linolenic acid is directly detected by adopting a high performance liquid chromatography-quadrupole time-of-flight mass spectrometry method, and finally, results are calibrated and output by combining an internal standard method and an external standard method. According to the method, efficient purification of the Baijiu matrix is achieved, the oxidation loss rate of alpha-linolenic acid is controlled within 3%, high-precision quantification of constant components and high-sensitivity detection of trace components can be synchronously achieved, the method is suitable for detection of full-flavor and full-alcoholic-degree Baijiu, stability and universality are excellent, and reliable technical support is provided for Baijiu quality evaluation.
Owner:JING BRAND

A method for preparing nanosilicon

The application provides a preparation method of nanometer silicon, which comprises the following steps: mixing a reducing metal and silicon halide, heating under a sealed condition to maintain the reducing metal in a molten state, stirring, and obtaining a reaction product; mixing the reaction product with a higher alcohol with hydrophobicity and then standing to obtain a reaction mixture; mixing the reaction mixture with water and stirring, standing to form a water layer and a hydrophobic colloidal layer, obtaining the hydrophobic colloidal layer, and drying to obtain nanometer silicon. The application is based on a molten metal reduction method, uses active reducing metal and silicon halide as raw materials, heats to maintain the reducing metal in a molten state in the reaction process, and reacts with the silicon halide to prepare nanometer silicon. Then, the prepared nanometer silicon is protected and separated by using the method of higher alcohol grafting. The higher alcohol can reduce the activity of the surface of the nanometer silicon, prevent the nanometer silicon from being oxidized in the process of air or water washing, and reduce the generation of silicon oxide impurities.
Owner:CENT SOUTH UNIV

Method for detecting higher alcohols in serum and application thereof

PendingCN121385149AComponent separationTriple quadrupole mass spectrometryMetabolic kinetics
The invention belongs to the technical field of chemical analysis and detection, and particularly relates to a method for detecting higher alcohols in serum and application of the method in metabolic kinetic analysis of alcoholic beverages. In order to realize the effective separation and synchronous detection of fatty alcohol, aromatic alcohol and isomers thereof, reduce the volatile loss of higher alcohol and the use amount of a sample and reduce the serum matrix effect, the method comprises the following steps: performing pretreatment extraction and derivatization on drunk serum; high performance liquid chromatography-triple quadrupole mass spectrometry is adopted to detect higher alcohols in serum after drinking and the content of the higher alcohols. Results prove that the detection method disclosed by the invention has the advantages of low sample amount, high precision and accuracy, low matrix effect and low detection limit. The detection method disclosed by the invention is used for detecting the content of ethanol and higher alcohol in serum in the metabolic kinetics analysis of the alcoholic beverage, so that the alcoholic beverage with excellent metabolic efficiency can be screened, and data support can be provided for the evaluation of slow drunkenness, fast sobering and light hangover.
Owner:LUZHOU LAOJIAO CO LTD +1

Catalyst for catalytically synthesizing C8+ higher alcohols from ethanol at low temperature, preparation method thereof, and method for synthesizing C8+ higher alcohols

The present invention discloses a catalyst for catalytically synthesizing C8+ higher alcohols from ethanol at low temperature, a preparation method thereof, and a method for synthesizing C8+ higher alcohols; aiming to provide a catalyst Ni / MOFC prepared by combining impregnation and two-step annealing methods. In this catalyst, Ni forms a coordination with N, optimizing the electronic structure of the metal surface, having highly dispersed active sites and a unique electronic effect, reducing the ethanol dehydrogenation energy barrier, thereby enabling the catalytic generation of C8+ higher alcohols from an ethanol aqueous solution at an extremely low temperature, and having good catalytic efficiency and selectivity.
Owner:GUANGDONG UNIV OF TECH