56 results about "Citral" patented technology

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 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 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 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.

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 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.

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 application provides a method and a process system for continuously producing citronellal from citral. The method comprises the following steps: introducing hydrogen into citral to produce citronellal under the catalysis of a catalyst; wherein the hydrogen introduced in the hydrogenation reaction contains 100-600 ppm of activating gas; and the activating gas is selected from NO or NO2. The method and device for continuously producing citronellal from citral provided by the application overcome the shortcoming that noble metal catalysts in aldehyde systems are easily poisoned by CO generated by aldehyde decomposition, realize online activation of the catalyst, and realize circulation and reuse of the catalyst in the reactor.

The invention discloses durian essence and a preparation method thereof, and the durian essence is prepared from the following raw materials: 2.0 to 3.8 percent of methyl 2-methylbutyrate, 1.6 to 3.4 percent of ethyl 2-methylbutyrate, 0.8 to 1.6 percent of 3-mercaptohexyl acetate, 0.4 to 1.2 percent of dipropyl disulfide, 0.01 to 0.1 percent of 4-mercapto-4-methyl-2-pentanone, 0.8 to 2.0 percent of citral, 1.5 to 3.0 percent of hops tincture, 1.0 to 2.2 percent of 2, 6-dimethyl-5-heptenal and 80.0 to 88.0 percent of solvent. According to the durian essence, a certain amount of acetic acid 3-mercaptohexyl ester and citral are added into common durian essence components such as methyl 2-methylbutyrate and dipropyl disulfide, and on the basis that the storage stability of the durian essence is guaranteed, the pure and full aroma profile of durian can be highly restored.

The application provides a method for efficiently preparing R-citronellal from citral. The method comprises two steps of pretreating raw material citral and catalytically preparing R-citronellal through asymmetric hydrogenation of citral. The method can greatly improve S / C (substrate / catalyst) of the reaction of preparing R-citronellal through asymmetric hydrogenation of citral, thereby significantly improving production efficiency and economic benefits.

The invention discloses olefinic bond reductase and application thereof. The amino acid sequence of the olefinic bond reductase mutant disclosed by the invention is as shown in SEQ ID NO: 4. The olefinic bond reductase mutant provided by the invention has preference to nerolaldehyde, and a double-plasmid co-transformation strain constructed by the olefinic bond reductase mutant and glucose dehydrogenase not only has more preference to a nerolaldehyde substrate, but also can transform the substrate (E / Z)-citral into (R)-citronellal with higher transformation efficiency; and the method has good potential economic benefits and industrial application values.

The application provides an anti-termite sealing material of silica gel foam and a preparation method thereof, and belongs to the technical field of polymer sealing materials. The raw material formula of the anti-termite sealing material of silica gel foam is as follows: vinyl silicone oil, reinforcing filler, flame-retardant filler, contact killing agent, bait agent, odor agent, structure control agent, inhibitor, platinum catalyst, foaming agent, hydroxyl silicone oil and hydrogen-containing silicone oil; wherein the contact killing agent is one or more of pyrethroid, neonicotinoid, phenylpyrazole, boric acid, glycine, erythritol and fipronil; the bait agent is one or more of diatomite, talcum powder, capsaicin, dihydrocapsaicin and denatonium benzoate; and the odor agent is one or more of camphor oil, peppermint oil, limonin, limonene, citral, decanal, octanal and nonanal. The anti-termite sealing material of silica gel foam has excellent flame-retardant performance, mechanical performance and anti-termite biting performance, and can well protect the integrity of the sealing material.

The invention provides carbon nanocellulose aerogel based on gas phase adsorption as well as a preparation method and application of the carbon nanocellulose aerogel, and belongs to the technical field of slow release of tobacco flavor. The preparation method comprises the following steps: preparing a nanocellulose suspension through 2, 2, 6, 6-tetramethylpiperidine oxide mediated oxidation reaction and homogenization treatment; sequentially performing freezing and vacuum freeze drying to obtain nano cellulose aerogel; the nano cellulose aerogel is carbonized, and carbon nano cellulose aerogel is obtained; the carbon nanocellulose aerogel and alpha-ionone, 3-acetylpyridine or citral are subjected to gas phase adsorption, and the carbon nanocellulose aerogel based on gas phase adsorption is obtained. The aerogel material prepared by utilizing a gas phase adsorption method has a good controlled release function, can realize accurate release of perfume under a high-temperature condition, meets the requirements of temperature and controlled release of perfume during cigarette combustion, and is simple and feasible in preparation process and suitable for industrial large-scale production.

The invention relates to the technical field of food antibacterial fresh-keeping packaging materials, in particular to a preparation method and application of a tara gum-chitosan-polyvinyl alcohol-citral antibacterial fresh-keeping film. Tara gum, chitosan and polyvinyl alcohol are used as film forming substrates, citral essential oil is added to serve as a multifunctional additive, and a film casting method is adopted for preparation. The raw materials used by the antibacterial preservative film prepared by the invention are safe, non-toxic and biodegradable; moreover, the preservative has good antibacterial property, can effectively inhibit growth and reproduction of microorganisms such as bacteria and molds, prolongs the shelf life, and can be applied to antibacterial preservation of foods.

The invention discloses a preparation method of a fruit pigment-based composite nanomaterial lipstick. The plant lipstick is prepared from the following raw materials in parts by weight: 1-2 parts of palm wax, 10-13 parts of white beeswax, 10-13 parts of sweet almond oil, 58 parts of shea butter, 2-3 parts of vitamin E, 0-1.2 parts of Chinese wolfberry pigment, 0-1.2 parts of citrus pigment, 0-0.3 part of grape pigment, 1 part of ultraviolet-induced grape cells and 0.1 part of citrus essential oil. The film-forming property and the stability of the lipstick are improved through compounding of the citral-chitosan nano-emulsion, and all the plant components play a role together, so that not only is rich color selection provided for a user, but also the lasting lip moistening and beautifying effects can be provided. The invention creates a complete method from pigment preparation and cell suspension system induction to preparation of the citral-chitosan nano-emulsion, so that natural plant pigments are effectively utilized; the lipstick provides a new way in the aspects of preventing chapping and peeling of the lips, reducing cheilogramma, neutralizing superoxide radicals, increasing the antioxidant function, improving the gloss of the lips, enriching the color and the like.

The application relates to the technical field of edible essence. The application discloses a yogurt essence and a preparation method thereof. The raw material composition of the yogurt essence comprises ethyl maltol, vanillin, butanedione, acetic acid, ethyl acetate, propionic acid, 2,3-pentanedione, 3-hydroxy-2-butanone, butyric acid, ethyl butyrate, isoamyl acetate, methyl thio butyrate, hexanoic acid, ethyl hexanoate, 10% furanone, isoamyl butyrate, ethyl levulinate, linalool, p-cymene, 4-terpinenol, nerol, citral, geraniol, neryl acetate, geranyl acetate, D-limonene, lemon oil, distilled white lemon oil, sweet orange oil, glycerol triacetate, rosemary extract and bitter gourd extract. The yogurt essence prepared by the application has a flavor closer to real yogurt, good thermal stability and good flavor persistence.

The purpose of the present invention is to provide a composition which has a lemon-like sour aroma, has a balanced aroma close to a fresh lemon peel aroma, exhibits a good aroma, has little bitter taste, and is suitable for imparting a lemon peel aroma to a beverage or the like. The invention relates to a composition which is characterized in that the composition contains limonene, citral and beta-caryophyllene, the weight ratio of limonene to beta-caryophyllene, namely limonene / beta-caryophyllene, is 250-2500, the weight ratio of citral to beta-caryophyllene, namely citral / beta-caryophyllene, is 5-110, the content of limonene is 2.5-90 wt%, and the content of beta-caryophyllene is 2.5-90 wt%. The content of bergamotin is 0.01% by weight or less.

The present invention provides an inhibitor of trimethylamine-responsive receptors that is suitable for deodorizing trimethylamine odor by suppressing the response of trimethylamine-responsive receptors. [Solution] In a preferred example, the inhibitor of the trimethylamine-responsive receptor includes at least one selected from the group consisting of trans-cinnamaldehyde, 3-(1,3-benzodioxol-5-yl-2-methylpropanal, 3-(4-tert-butylphenyl)propanal, trans-2-hexenal, citral, Litsea cubeba fruit oil, 3-methyl-5-phenylpentan-1-ol, 4,8-dimethyl-4,9-decadienal, undecanal, ethyl dehydrocyclogeranate, and 4-[(octahydro-4,7-methano-5H-indene)-5-ylidene]butanal.

The purpose of this disclosure is to provide a fragrance for use in entrances or toilets, which is dispersed in the entrance or toilet and can impart an excellent fragrance to the wallpaper of the entrance or toilet. [Solution] A fragrance for scenting wallpaper in an entrance hall or toilet, comprising at least one fragrance selected from the group consisting of lime oil, spearmint oil, peppermint oil, ethyl butyrate, isoamyl acetate, lavender oil, lavandin oil, ylang-ylang oil, lemongrass oil, hexyl acetate, and citral.

The present disclosure provides pesticide compositions and formulations for controlling indoor and outdoor pests comprising Pimenta dioica, Pogostemon cablin, Citral, Cinnamaldehyde, and excipient(s). Also, provided are methods for controlling indoor and outdoor pests. The ingredients of the compositions and formulations of the present disclosure exhibit functional reciprocity therebetween, and aid in effective repelling, killing, preventing, and / or reducing the population of indoor as well as outdoor pests.