123 results about "Citral" patented technology

The invention belongs to the technical field of food fresh-keeping packaging materials, and discloses a green chitosan-based antibacterial film as well as a preparation method and application thereof. The green chitosan-based antibacterial film comprises a film with chitosan as a matrix and shellac nanoparticles loaded in the matrix, and the shellac nanoparticles encapsulate cinnamyl aldehyde and citral. The green chitosan-based antibacterial film disclosed by the invention has good mechanical property, barrier property, antibacterial property and biodegradability, the preparation process is simple, the raw materials are green and safe, and the environment-friendly effect is realized. And the shelf life of the bread can be obviously prolonged to the eighth day when the bread is stored at 25 DEG C in the preservation process of the bread.

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 provides a dual-response antibacterial nanofiber membrane and a preparation method thereof, an antibacterial aminated gelatin nano inclusion compound is loaded into a polyvinyl alcohol-chitosan matrix through an electrostatic spinning technology to prepare a nanofiber membrane, citral is further loaded in a closed adsorption mode, and the dual-response antibacterial nanofiber membrane is prepared. The antibacterial nanofiber membrane with the humidity and gelatinase dual responsiveness is obtained. The antibacterial nanofiber membrane disclosed by the invention can directly wrap the periphery of a meat product, and citral is adaptively released by increasing the environmental humidity so as to inhibit the proliferation of microorganisms; besides, when endogenous or exogenous microorganisms infect the surfaces of the meat products, gelatinase secreted by the microorganisms is used as a sensor to further release antibacterial substances, the antibacterial substances can be released according to actual fresh-keeping requirements in the storage, transportation and circulation process of the meat products, the problems that antibacterial components are released too early and the timeliness is short are solved, the storage time of the meat products can be remarkably prolonged, and the safety of the meat products is improved. And the spoilage is delayed.

The application provides a preparation method of citral. By controlling the content of isopentenoic acid in a citral intermediate composition in the range of 10-2000 ppm, and then performing a thermal rearrangement reaction, citral product is prepared. The method can effectively reduce the selectivity of isomerization side reactions, and the yield of the final product citral is increased to more than 95%.

The invention discloses application of a natural bacteriostatic agent in inhibition of salt-tolerant cladosporium in a tea beverage and the tea beverage, and relates to the technical field of food additives, and the natural bacteriostatic agent in the application comprises at least one of citral, smoked plum and ginger extract. In the technical scheme of the invention, any one of citral, smoked plum and ginger extract is independently added into the tea beverage obtained by a sterilization canning technology, so that the propagation of salt-tolerant cladosporium can be effectively inhibited; meanwhile, two or three of citral, smoked plum and ginger extract are added into the tea beverage to synergistically inhibit propagation of salt-tolerant cladosporium, so that the dosage of a natural bacteriostatic agent is reduced, and the taste of the tea beverage is improved.

The present invention provides a compound essential oil, an anti-corrosion system containing the same, and their uses. The compound essential oil is composed of the following components: wild chrysanthemum essential oil, jasmine essential oil, patchouli essential oil, and lemon-aldehyde-type camphor leaf essential oil. The compound essential oil has the effect of significantly inhibiting the growth of Propionibacterium acnes, Staphylococcus aureus, and Malassezia for a long time. The present invention also provides a compound anti-corrosion system, which contains the above compound essential oil, 1,2-hexanediol, and caprylyl glycol.

The present invention relates to a method for the preparation of 3-methyl-3-butene-1-ol (isoprenol), comprising the steps of preparing isobutylene (also: isobutene, 2-methylpropene) by contacting 3-methylbutan-1-ol (isoamyl alcohol) to a catalyst comprising at least one catalytically active metal and reacting at least one formaldehyde source and the isobutylene obtained in step a-i) to obtain isoprenol. Furthermore, the present invention refers to processes for the preparation of 3-methyl-2-butene-1-ol (prenol), of 3-methyl-3-butenal (isoprenal), of 3-methyl-2-butenal (prenal), and of 3,7-dimethy l-octa-2, 6-dienal (citral) and further downstream products comprising the use of isoprenol of the present invention and the resulting products and product streams.

The application discloses a method for improving the separation yield of pseudo-isomethyl ionone, which comprises the following steps: condensation reaction of butanone and citral in a solvent under the action of an alkaline catalyst; after neutralization of the reaction solution, part of the solvent and unreacted raw materials are removed through a first desolventizing tower; the material in the first desolventizing tower is mixed with water and then enters a second desolventizing tower; and the liquid in the second desolventizing tower enters an oil-water separation tank to obtain a crude pseudo-isomethyl ionone product and waste brine. The method adopts double-tower continuous separation to remove the reaction solvent of pseudo-isomethyl ionone, and water is added between the two towers, so that water washing and salt removal are realized during the separation, and the separation yield of the crude product is greater than 99%. The method is simple in operation and is an economical separation method of pseudo-isomethyl ionone.

According to the storage-stable citral and the production method thereof provided by the invention, the purpose of improving the storage stability is achieved by controlling the key component isomenthenol in a citral product to be within a certain content range.

The application provides an olefin bond reductase and a mutant thereof and application, and belongs to the technical field of catalysis and modification of functional enzyme molecules. The amino acid sequence of the olefin bond reductase disclosed by the application is shown as SEQ ID NO:1, and the amino acid sequence of the mutant thereof is shown as SEQ ID NO:3. The olefin bond reductase and the mutant thereof provided by the application are used in combination with glucose dehydrogenase to catalyze citral, without adding coenzyme NADH in a reaction system, while glucose salt is produced as a by-product, the economic benefit of the reaction is improved, the cost of the reaction is greatly reduced, and the olefin bond reductase and the mutant thereof have more potential and value in industrial production in the preparation of (R)-citronellal.

The invention belongs to the technical field of fine chemical engineering, and particularly relates to a citral full-continuous chemical synthesis method. A plurality of feeding pumps, a mixer, a microreactor, a back pressure valve, a liquid-liquid separator and an online filter are connected according to a citral linear synthesis route to form a fully continuous chemical synthesis device, so that fully continuous chemical synthesis of citral is realized; products with consistent quality can be stably produced, the integration degree is high, the occupied area for production is small, the unit productivity is high, meanwhile, the yield can be adjusted according to requirements, and the amplification effect existing in a kettle type process is avoided.

The invention belongs to the technical field of traditional Chinese medicine wine preparation, and particularly relates to traditional Chinese medicine compound wine and a preparation method thereof. The traditional Chinese medicine compound wine is prepared from the following raw materials in specific parts by weight: rhizoma polygonati, Chinese yam, raspberry, fructus lycii, cinnamon, astragalus membranaceus and the like through base wine extraction. The preparation method comprises the following steps: pretreating raw materials, mixing the pretreated raw materials with base liquor, sequentially carrying out ultrasonic treatment, composite enzymatic hydrolysis under a weak acid condition and reflux extraction to promote the nucleophilic addition of cinnamyl aldehyde, citral, polygonatum polysaccharide and Chinese yam saponin to form a hemiacetal structure, and cooperating with organic acid and polysaccharide to construct a hydrogen bond network to form a stable compound system; and filtering the extracting solution, carrying out stepped variable-temperature aging, blending and filling to obtain the traditional Chinese medicine compound wine. The dissolution rate and stability of active ingredients are effectively improved, the problems that traditional medicinal liquor is prone to precipitation, low in bioavailability and poor in taste are solved, and meanwhile the traditional Chinese medicinal liquor has the comprehensive effects of improving the immunity, moistening the lung, nourishing yin and tonifying yang.

The present invention relates to a method for preparing 3-methyl-2-butenal (prenal), 3-methyl-2-buten-1-ol (prenol), diprenyl acetate of prenal, and 3,7-dimethyl-octa-2,6-dienal (citral), wherein the aldehyde content in one or more reaction flows is maintained below a threshold. Furthermore, the present invention relates to available product flows of prenal, prenol, diprenyl acetate of prenal, and citral.

The present invention discloses a composition and method for treating arthritis. The composition comprises a binary blend of molecules including citral, methyl cinnamate, and epicurzerenone. The binary blend exhibits synergistic efficacy in modulating inflammatory cytokines. The citral, epicurzerenone, and methyl cinnamate, are derived from essential oils of Cymbopogon citratus, Hedychium spicatum, and Zanthoxylum armatum, respectively. Both individual and binary blend exhibits downregulation of pro-inflammatory cytokines IL-2, IL-6, and TNF-α, and upregulation of anti-inflammatory cytokine IL-10

The invention relates to a process for preparing pseudoionone, comprising: (i) reacting citral and acetone in a reactor in the presence of a lye to give a reaction mixture (1) containing pseudoionone and acetone; (ii) separating the acetone from the reaction mixture (1) by stripping with steam (5), whereby a crude product stream containing pseudoionone and a gas stream (9) containing acetone are obtained; (iii) cooling the gas stream (9) containing acetone, wherein the heat liberated when cooling the gas stream (9) containing acetone is used in a heat pump (15) to produce steam.

The invention relates to the technical field of aquaculture disease control, in particular to preparation of a citral preparation and application of the citral preparation in aquaculture, the preparation method comprises the following steps: step 1, adding a compound emulsifier into a co-solution, and uniformly stirring and mixing to obtain an emulsion; step 2, adding the active component into the emulsified liquid, and continuously stirring to form primary emulsion; and step 3, adding a stabilizer into the primary emulsion, stirring and mixing, homogenizing at high pressure, and cooling to room temperature to obtain the citral preparation. The citral preparation prepared by the invention has a strong antibacterial property, and the preparation process of the preparation is simple and convenient and does not need to depend on special equipment, so that the production cost is remarkably reduced, and the realization of large-scale mass production is facilitated; the device is flexible and convenient to operate, can be mixed into feed to be added for use, can also be sprayed through water, and can fully meet diversified scene requirements of aquaculture.

The invention discloses a pungent litse fruit essence for beverage and a preparation method thereof, and belongs to the technical field of beverage additives, the pungent litse fruit essence is prepared from the following raw materials in parts by mass: 0.1 part of citronellal, 0.1 part of linalool, 0.05 part of geraniol, 0.1 part of citral, 3 parts of lemon terpenoid removal liquid, 10 parts of pungent litse fruit water-soluble extract, 5 parts of pungent litse fruit fermentation extract, 61.65 parts of ethanol, 10 parts of purified water and 10 parts of propylene glycol. The citronellal, the linalool, the geraniol and the citral are used for providing head fragrance, the lemon terpene-removing liquid is used for providing soft fragrance, the pungent litse fruit water-soluble extract is used for providing main fragrance, the pungent litse fruit fermentation extract is used for providing composite fragrance, so that the fragrance of the pungent litse fruit essence is compounded and rich, and meanwhile, the pungent litse fruit extract is obtained by an ethanol water extraction method, has good water solubility, and can be used for preparing the pungent litse fruit essence. The beverage can be applied to beverages and has unique flavor.

The invention discloses a rice starch-based citral nano-emulsion asymmetric functional packaging film and a preparation method and application thereof.The preparation method comprises the steps that sulfonated cellulose nanocrystals and pea protein isolate are added into water to prepare a suspension, soybean oil and citral are added into the suspension, citral nano-crude milk is obtained after homogenization, and the rice starch-based citral nano-emulsion asymmetric functional packaging film is obtained. The preparation method comprises the following steps: performing ultrasonic treatment to obtain citral nano-emulsion, adding water into rice starch, heating and stirring to obtain rice starch paste, adding glycerol and the citral nano-emulsion to obtain film-forming slurry, forming a film by a tape casting method, soaking in an ethanol solution of myristic acid, taking out, and drying to obtain the packaging film. The packaging film has an asymmetric function, one side of the film has hydrophobicity and can effectively prevent moisture loss, the other side of the film has antibacterial property and hydrophilicity, moisture and quality of substances in the film can be effectively kept, breeding and reproduction of microorganisms in the film can be inhibited, and the preparation method is simple, convenient, safe, green, environmentally friendly and wide in application prospect.

The application belongs to the field of organic synthesis and provides a synthesis method of tulikene ketone. The application adopts the design of solid acid-metal trapping catalyst A1-P and TEMPO solid resin catalyst B1-R synergistic catalysis, realizes the cyclization and condensation reaction of citral through the Brønsted acid site constructed by porous silica supported aminopropyl silane and phosphoric acid, combines the selective oxidation reaction of chloromethylated crosslinked polystyrene resin supported TEMPO, and realizes the preparation of beta-tulikene ketone through the double bond migration, dehydration and short path rectification under reduced pressure. The product area percentage is not less than 98.5%, the E configuration content is not less than 92%, the colority is not higher than 40 APHA, and the total heavy metal content is not higher than 5 ppm. The application solves the problems of poor mechanical stability of the catalyst fixed bed, low E configuration selectivity, high colority and heavy metal residue in the traditional process, is suitable for the preparation of food essence and daily chemical essence, and has wide application value.

The invention discloses a black tea processing method for directionally releasing sweet flower fragrance characteristic components based on exogenous enzyme targeted regulation and control of glucoside hydrolysis. The black tea processing method comprises the following steps: withering fresh leaves, performing enzymatic treatment, performing gradient rolling, performing temperature-controlled humidity-controlled fermentation, and performing gross fire-spreading airing-complete fire staged drying on the fermented tea leaves, an enzyme solution sprayed for enzymatic treatment comprises one or more of an alpha-galactosidase solution with the activity being 0.5 to 0.6 U / mL, a beta-glucosidase solution with the activity being 0.6 to 0.7 U / mL, a cellulase solution with the activity being 200 to 210 U / mL and a papain solution with the activity being 1600 to 1700 U / mL; the sweet flower fragrance characteristic components comprise at least one of beta-myrcene, junifolene, citral, linalool, methyl salicylate, geraniol and nerol. The method solves the industrial problems of insufficient release of sweet flower fragrance characteristics, poor process stability and high dependence degree of raw materials in traditional black tea processing.

The invention relates to non-therapeutic use of citral and a phosphonate sequestrant in a composition for providing an antimicrobial benefit. The invention also relates to a non-therapeutic method of providing an antimicrobial benefit to a surface by contacting the surface with a composition comprising citral and a phosphonate sequestrant.

The present invention discloses a fruit juice beverage for reducing blood sugar and increasing sweetness by using sweet orange aroma substances and a preparation method thereof. The fruit juice beverage contains linalool at a mass percentage of 0.05% - 0.3%, geraniol at a mass percentage of 0.025% - 0.3%, limonene at a mass percentage of 0.025% - 0.3%, neral at a mass percentage of 0.025% - 0.3%, citronellal at a mass percentage of 0.025% - 0.3%, octanal at a mass percentage of 0.025% - 0.3%, citral at a mass percentage of 0.025% - 0.3%, caryophyllene at a mass percentage of 0.01% - 0.3%, and sucrose at a mass percentage of 1% - 10%. By studying the interaction between eight spices such as limonene, linalool, neral, geraniol, octanal, citral, caryophyllene, and citronellal and sucrose, the present invention controls the concentrations of the spice substances and sucrose in the beverage, achieving the effect of reducing blood sugar and increasing sweetness. Compared with the prior art, the spices used in the present invention are natural and healthy, and the prepared beverage has a moderate sweetness and high comfort level.

The invention belongs to the field of citral extraction, and discloses a preparation method of a citral solution, a citral miniemulsion and a preparation method of the citral miniemulsion. The preparation method of the citral solution comprises the following steps: preparing trifluoroacetaldehyde hemiethanol, 2-(trifluoromethoxy) ethanol, 2, 2-difluoroethanol and ethanol into a fluorine-alcohol mixed solution; taking the fluorine alcohol mixed solution, and adding alkanol to prepare a fluorine alcohol-alkanol solution; adding deionized water into the fluoroalcohol-alkanol solution, carrying out uniform vortex mixing, and carrying out centrifugal separation to obtain an MFHO-alkanol supramolecular solvent; uniformly mixing the MFHO-alkanol supramolecular solvent, deionized water and the citrus peel concentrate dilute solution in a vortex manner, and performing centrifugal separation to obtain a citral solution. The extraction method is simple, reliable and high in extraction efficiency.

A process for the preparation of isoprenol comprises the steps of a-i) preparing isobutylene by oxidizing isoamyl alcohol to isovaleric acid, and subjecting the isovaleric acid to oxidative decarboxylation so as to obtain isobutylene; and a-ii) reacting at least one formaldehyde source and the isobutylene obtained in step a-i) to obtain isoprenol. The process allows for providing isobutylene for the preparation of isoprenol and its downstream products, including prenol, prenal, isoprenal and / or 3,7-dimethyl-octa-2,6-dienal (citral), from renewable sources.

The invention belongs to the technical field of food and environment detection, and relates to a hydrophobic carbon dot as well as a preparation method and application thereof, in particular to preparation of the hydrophobic carbon dot and a method for detecting micro-plastics in food and environment. A carbon source and a nitrogen source are used as reactants, the carbon source is citral, the nitrogen source is ethylenediamine and / or urea, ethanol is used as a reaction medium, and the hydrophobic carbon dots are prepared through solvothermal reaction, insoluble substance removal, dialysis and drying. The hydrophobic carbon dots are fast in dyeing, low in quenching rate, free of heating, capable of distinguishing common interferents, not affected by pH and polarity of a sample and capable of achieving efficient and fast detection in food and environmental micro-plastic detection.

The invention discloses a chemical purification method of linalool, and relates to the technical field of linalool purification, and the chemical purification method comprises the following steps: S1, condensation reaction: carrying out condensation reaction on linalool and citral under the action of a basic catalyst cesium carbonate to generate a linalool intermediate with long-chain alkenyl; s2, reduction reaction: carrying out reduction reaction on the linalool intermediate by using a reduction system composed of aluminum isopropoxide and isopropanol so as to purify linalool; s3, product separation and purification: after the reaction is finished, cooling a reaction system, adding water for dilution, extracting, washing, drying, filtering, distilling, further purifying by adopting column chromatography, and collecting a target fraction by taking n-hexane-ethyl acetate as an eluent to obtain the high-purity and fragrance-enhanced linalool, and optimizing the performance of the linalool by adopting a chemical purification mode, so that the quality of the linalool is improved. And a long-chain alkenyl structure is introduced, so that the aromatic flavor level of the cinnamomum camphora is enriched, the aroma is richer and more unique, the aroma is remarkably improved, and meanwhile, the sterilization function is enhanced.

The invention belongs to the technical field of biological medicine, and particularly discloses application of litsea cubeba oil or citral serving as an active ingredient of the litsea cubeba oil in preparation of a product for preventing and treating photoaging. The invention further discloses a preparation for preventing and treating light aging. The preparation comprises litsea cubeba oil or citral serving as an active ingredient of the litsea cubeba oil. The invention overcomes the side effects of high price, skin irritation risk and the like of the existing photoaging treatment means (instruments / chemical drugs), develops an alternative scheme based on natural components, and provides a new application of natural and low-toxicity litsea cubeba oil or citral as an active component thereof in preventing and treating UVA-induced photoaging.

The application provides a modified high-performance fiber material and a preparation method thereof, and belongs to the technical field of adsorbing materials, and comprises the following steps: mixing indole acetic acid, an acetic acid aqueous solution, N-(3-dimethylaminopropyl)-N'-ethyl carbodiimide hydrochloride, 4-dimethylaminopyridine and CNCs for reaction, washing and drying to obtain indole modified CNCs; adding gamma-CD-MOFs into an ethanol solution for ultrasonic treatment, adding citral and cinnamaldehyde for mixing and stirring, centrifuging to obtain a precipitate, and washing and drying to obtain a MOF@citral / cinnamaldehyde composite material; mixing and stirring the indole modified CNCs and the MOF@citral / cinnamaldehyde composite material, standing, centrifuging to obtain a precipitate, and washing and drying to obtain the modified high-performance fiber material. The application can be used as an adsorbing material to adsorb and remove pollutants and has antibacterial and bacteriostatic properties.

A compound is represented by the following formula (1):The compound may be used for a flavor-imparting composition, a consumer product, a method of imparting a flavor to an flavor-imparting composition, or a method of imparting a flavor to a consumer product. The compound may be excellent as a citral-alternative compound and have an excellent effect of imparting a flavor.

The invention discloses a synergistic bactericidal composition and application thereof in prevention and treatment of kidney bean diseases, and belongs to the technical field of pesticides. The active ingredients of the composition comprise citral, azoxystrobin and difenoconazole. Through a specific ratio, the three active ingredients show a remarkable synergistic effect when preventing and treating fusarium, and the problem that the prevention effect of an existing bactericide is reduced due to drug resistance is solved. The composition provided by the invention has the advantages of high efficiency, low toxicity and reduced dosage, and provides a new thought for developing a novel green compound bactericide.