88 results about "Citral" patented technology

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 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 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 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.

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.

The invention discloses an anti-pollution and sterilization integrated non-co-reactant electrochemical luminescence (ECL) sensor for detecting staphylococcus aureus in an aquatic product as well as a preparation method and an application method of the anti-pollution and sterilization integrated non-co-reactant ECL sensor, and the anti-pollution and sterilization integrated non-co-reactant ECL sensor is suitable for ultra-sensitive detection of the staphylococcus aureus. The integrated hydrogel illuminant is characterized in that chitosan and citral are subjected to a Schiff base reaction to form a three-dimensional network in a cross-linking manner, and tetrakis (4-hydroxyphenyl) porphyrin (THPP) and luminol are introduced into the three-dimensional network. According to the present invention, THPP is adopted as a high efficiency oxygen evolution reaction (OER) electrocatalyst to generate reactive oxygen species (ROS) to replace the traditional hydrogen peroxide so as to be adopted as a co-reactant, such that the ECL signal of luminol is significantly enhanced; the hydrogel has excellent hydrophilicity and antibacterial activity, can significantly reduce non-specific adsorption, realizes anti-pollution detection, and realizes sterilization treatment after detection. By combining a DNA Walker signal amplification strategy, the sensor has a linear response to S. aureus within the range of 101-108 CFU / mL, the detection limit is as low as 0.39 CFU / mL, and the recovery rate of 97.3%-111.85% is obtained in a marine product actual sample. The device has the advantages of being simple in structure, sensitive in detection, high in anti-interference capacity, capable of achieving on-site rapid detection and the like, and is suitable for the fields of food safety, environment monitoring and clinical pathogenic bacterium detection.

This invention discloses a method for synthesizing geranialdehyde, comprising the following steps: Citral undergoes an isomerization reaction under the action of a catalyst; after the reaction, a post-treatment is performed to obtain a product rich in geranialdehyde; the catalyst includes a noble metal catalyst and an organophosphorus ligand; the noble metal catalyst is a palladium salt. This preparation method can effectively realize the conversion of nerol to geranialdehyde, and the reaction process generates relatively little waste, is environmentally friendly, fully utilizes the raw materials, and produces no waste gas.

The invention discloses a preparation technology of pungent litse fruit black tea, and belongs to the technical field of tea processing, and the preparation technology comprises the following steps: (1) pungent litse fruit treatment; (2) tea leaf treatment; (3) mixing and rolling treatment; (4) fermentation treatment; (5) drying treatment; (6) flavor curing treatment; according to the invention, triple technologies of freezing wall breaking of fresh litsea cubeba fruits, cell-level co-rolling of withered black tea leaves, oxygen-controlled directional fermentation of a complex microbial inoculant and dried orange peel mediated bionic anaerobic curing are coupled, so that the inherent normal form of physical blending of traditional flavored tea is fundamentally subverted; the unique flavor of the pungent litse fruit and the mellow taste of the black tea are combined, and irritant citral is converted into a slow-release glycosylation flavor precursor in situ, so that the product perfectly has the aroma coordination at the initial stage of brewing and the lasting throat cooling feeling after drinking on the premise of zero addition; the problem that deep and natural fusion from fragrance to taste between the pungent litse fruit flavor and the black tea soup cannot be fully realized in the prior art is effectively solved.

The application relates to the technical field of daily chemicals, and particularly discloses a bacteriostatic and deodorizing fragrance composition as well as a preparation method and application thereof. The bacteriostatic and deodorizing fragrance composition is made of raw materials and comprises the following components: a chemical reaction type deodorizing fragrance base, a sensory modification and receptor blocking fragrance base and a bacteriostatic synergistic fragrance base. The chemical reaction type deodorizing fragrance base is a combination of one or more of citral, citronellal, decanal, damascone, ionone and methyl dihydrojasmonate; the sensory modification and receptor blocking fragrance base is a combination of one or more of menthol and its derivatives, linalyl acetate, dihydromyrcenol and eucalyptol; and the bacteriostatic synergistic fragrance base is a combination of one or more of farnesol, eugenol, thymol, tea tree oil and rosemary extract. The bacteriostatic and deodorizing fragrance composition can keep a better balance and coordination of the sensory modification, chemical deodorization and bacteriostatic components in the fragrance, and thus can exert excellent deodorization and bacteriostatic effects.

The present application relates to a kind of high-efficiency oil sludge separating agent, preparation method and its application in oil sludge cleaning.The high-efficiency oil sludge separating agent includes the following weight parts of component, coconut oil diethanolamide 25-45 parts, sulfonated succinic acid dioctyl ester sodium salt 15-25 parts, sodium dodecyl sulfate 3-10 parts, propylene glycol 1-5 parts, alpha-pinene or limonene 3-10 parts, alpha-terpineol or menthol 3-10 parts, acetyl linaloe 3-8 parts, citral 1-5 parts, water 15-25 parts.The application of the high-efficiency oil sludge separating agent in oil sludge cleaning includes the following steps, S1, oil sludge and agent are loaded into first container;S2, add cleaning water, keep the temperature of mixed solution at 50-70 DEG C, use stirrer to carry out high-speed shearing stirring, stirring speed is above 3000r / min;S3, after stirring, mixed solution is transferred to second container, continue to add cleaning water;S4, continue to stir, stirring speed is above 100r / min.The present application has good oil sludge separation efficiency.

The present invention belongs to the field of traditional Chinese medicine detection technology, and specifically relates to a method for constructing a characteristic spectrum of a tsaoko kernel and its preparation and a method for distinguishing the same from counterfeit products, comprising the following steps: (1) preparing a test solution; (2) taking the test solution and detecting it by high performance liquid chromatography, with a wavelength of 238-242 nm, octadecylsilane bonded silica gel as a filler, a mobile phase comprising an aqueous solution containing phosphoric acid and acetonitrile, and a gradient elution program comprising: 0 → 20 min → 30 min → 50 min, and the volume percentage of acetonitrile in the mobile phase being: 4% → 19% → 34% → 45%. The characteristic spectrum obtained by the method has a stable baseline, good characteristic peak shape, high separation, and can accurately locate the peak positions of protocatechuic acid, proanthocyanidin B2, and citral (neral, geranial), fully reflecting the integrity and characteristic properties of the tsaoko kernel and its preparation, and providing a basis for quality detection and control of the tsaoko kernel and its preparation.

DEPCT6916 / 12 / 2568 This invention relates to a process for preparing 3-methyl-2-butenal (prenal) for... Prepare 3-methyl-2-butane-1-ol(prenol), for the preparation of diprenyl acetate of prenol, including for... Preparation of 3,7-dimethyl-octa-2,6-dienal(citral) where the amount of aldehyde in one reactant stream The current, or more precisely, is kept below the triggering value. Furthermore, this invention also involves... The product stream that can be obtained from prenol, prenol diprenyl acetate of prenol including citral;

This invention provides a composition effective in suppressing the deterioration of citral flavor. [Solution] A citral flavor-suppressing composition containing one or more compounds selected from the group consisting of 8-methyl-4-methylenenona-7-en-2-one and 4,8-dimethylnona-3,7-dien-2-one as an active ingredient. Preferably, it contains at least 8-methyl-4-methylenenona-7-en-2-one. Alternatively, preferably, the unpleasant flavor is due to p-cresol and / or p-methylacetophenone.

The invention provides a silica gel foam sealing material capable of preventing termite gnawing and a preparation method of the silica gel foam sealing material, and belongs to the technical field of polymer sealing materials. The raw material formula of the silica gel foam sealing material is as follows: vinyl silicone oil, a reinforcing filler, a flame-retardant filler, a contact insecticide, a bait, an odorant, a structure control agent, an inhibitor, a platinum catalyst, a foaming agent, hydroxyl silicone oil and hydrogen-containing silicone oil. Wherein the contact insecticide is one or more of pyrethroids, neonicotinoids, phenyl pyrazoles, boric acid, glycine, erythritol and fipronil; the bait agent is one or more of diatomite, talcum powder, capsaicin, dihydrocapsaicin and denatonium benzoate; the odorant is one or more of camphor oil, peppermint oil, limonin, limonene, citral, capraldehyde, octanal and nonanal. The silica gel foam sealing material disclosed by the invention has excellent flame retardant property, mechanical property and ant gnawing resistance, and the integrity of the sealing material can be well protected.