147 results about "Citral" patented technology

The invention relates to a composite flocculant for a water treatment process and a preparation method of the composite flocculant, and belongs to the technical field of flocculants. The preparation method of the composite flocculant for the water treatment process comprises the following steps: mixing montmorillonite and a hydrochloric acid solution, performing ultrasonic treatment, filtering, drying, adding absolute ethyl alcohol and a coupling agent, grinding, mixing, filtering, washing, drying, performing high-temperature calcination, cooling to room temperature, adding a chitosan solution, mixing, grinding, and drying to obtain the composite flocculant for the water treatment process. Adding a citral solution, stirring at a constant temperature, filtering, washing, drying, adding modified cinnamyl alcohol, absolute ethyl alcohol and an initiator, uniformly mixing, heating, stirring, filtering, washing and drying to obtain a finished product. By preparing the organic / inorganic composite flocculating agent, the stability of the flocculating agent is improved, and the adsorption capacity of the flocculating agent to pollutants is remarkably improved by compounding a plurality of mechanisms such as hydrophobic effect, electrostatic interaction and metal element coordination.

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 belongs to the technical field of biochemistry, and particularly discloses plant-derived halitosis-resistant mouth wash which comprises a SEQNO: 1 small molecule peptide extracted from mint leaves, a SEQNO: 2 small molecule peptide extracted from clove and a novel organic compound 5-(2-aminoethyl)-3-hydroxy-2-methyl-4H-pyran-4-one (AEHMP). The mouthwash further comprises the following components: deionized water, propylene glycol, lauryl alcohol polyether-9 carboxylate, menthol, citral, potassium sorbate and the like. The preparation method comprises the following steps: firstly extracting and purifying the small molecule peptide and synthesizing the AEHMP, and then mixing the components in proportion to obtain the mouthwash. The mouthwash disclosed by the invention can be used for effectively inhibiting odorous bacteria in the oral cavity, reducing the generation of volatile sulfides and freshening breath, is natural and safe, is optimized in formula and can be used for maintaining the micro-ecological balance of the oral cavity.

The invention discloses an antibacterial concentrated laundry detergent and a preparation method thereof, and relates to the technical field of daily chemicals. The fatty alcohol-polyoxyethylene ether, the acrylic acid and the organic silicone oil are mixed and copolymerized to prepare the modified fatty alcohol-polyoxyethylene ether, so that the thickening effect is achieved, and the skin is not easily damaged; then fatty alcohol polyoxyethylene ether sodium sulfate is compounded with the surfactant, so that the advantages of the two surfactants are considered; secondly, chitosan and sodium alginate are compounded and embedded with curcumin and citral to prepare antibacterial microcapsules; the citral destroys the integrity and permeability of bacterial cell membranes, so that the antibacterial effect is achieved, and the washed clothes have aftertaste; curcumin is used as an antioxidant to further guarantee the antibacterial property of the clothes; the two herbal effective factors are embedded in microcapsules, do not react with an alkaline surfactant during storage, and can be combined with the surfactant at the second half stage of clothes washing to reduce damage and residues caused by the surfactant. The laundry detergent prepared by the invention has the effects of resisting bacteria and not hurting hands.

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 present invention provides a composite preservation method for black fish slices. The following steps are included: S1. After slaughtering the black fish, scales, viscera, head and tail are removed, the water is drained after washing with running water, and the black fish slices are cut into black fish slices. S2. Modified xanthan gum-carbon point nanoparticles are prepared. S3. Whey protein / gliadin / sodium hydroxymethylcellulose fresh-keeping solution modified by citral is prepared. S4. Whey protein / gliadin / sodium hydroxymethylcellulose / lemon sustained-release fresh-keeping solution loaded with modified xanthan gum-carbon point nanoparticles is prepared. S5. The black fish slices are immersed in the sustained-release fresh-keeping solution, dried, and vacuum-packed. The present invention uses whey protein / gliadin / sodium hydroxymethylcellulose / lemon sustained-release fresh-keeping solution loaded with modified xanthan gum-carbon point nanoparticles to preserve the black fish slices. The sustained-release fresh-keeping solution regulates the release of active substances in the modified xanthan gum-carbon point nanoparticles, improves the stability and moisture barrier of the fresh-keeping film, and the modified xanthan gum-carbon point nanoparticles further improve the antibacterial effect.

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 present invention discloses a slug repellent, comprising a liquid volatile chemical standard and a liquid auxiliary component, wherein the mass percentage of the liquid volatile chemical standard is 0.01%-1%. The liquid volatile chemical standard is one or more of hexanal, nonanal, decanal, and β-cyclocitral, and the purity of hexanal, nonanal, decanal, and β-cyclocitral is all greater than 97%. The auxiliary component is liquid paraffin. The present invention also discloses a method for preparing a slug repellent. The present invention adopts the above-mentioned slug repellent and its preparation method, which can reduce environmental pollution caused by chemical pesticides and solve problems such as toxicity to non-target organisms.

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 invention discloses a catalyst for preparing citronellal by selective reduction of citral and a preparation method thereof. A magnesium oxide carrier is obtained by calcining a magnesium salt at high temperature, a palladium precursor is uniformly loaded on magnesium oxide by adsorption, palladium is reduced with sodium borohydride, potassium borohydride or sodium formate, and then a hydrophobic hydrogenation catalyst is obtained by modification with 1H, 1H, 2H, 2H-perfluorooctyltriethoxysilane. The catalyst prepared in this way has high catalytic activity and selectivity for the reaction of preparing citronellal by selective reduction of citral. The catalyst active components of the present invention are highly dispersed, highly active, and have a selectivity of ≥98%, and the catalyst cost is low, and has a high industrial application value.

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 provides a method for preparing citronellal. By controlling the ratio of cis-iso-isodecadienal to trans-iso-isodecadienal in the citral raw material to be 3: 2-4: 2 and the content to be 0.2-0.5 wt%, the ee value of citronellal can be effectively increased, and the generation of excessive hydrogenation products is reduced, so that the yield of citronellal is increased.

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.