505 results about "Hexanoic acid" patented technology

The invention discloses a pure bio-based polyhydroxyalkanoate adhesive as well as preparation and application thereof, and belongs to the technical field of degradable adhesives. According to the adhesive, polyhydroxybutyrate valerate or polyhydroxybutyrate hexanoate is used as a matrix, and the acid value reaches 2-15 mg KOH / g through molten end group activation; a reactive emulsifier with a hydrophilic-lipophilic balance value of 9-12 is introduced into a water phase, and the stable aqueous dispersion is prepared through phase inversion high-shear emulsification. The Z-average particle size of the dispersion is 0.12-0.30 [mu] m, and the content of the free surfactant is not higher than 30wt%. After the tackifying resin, the plasticizer and the vegetable wax are compounded, the bio-based carbon content of the obtained adhesive is not lower than 95%, and the volatile organic compound content is not higher than 100 mg / kg. The paper / paper heat sealing strength of the adhesive is not lower than 7.0 N / 15mm, the 180-degree peel strength is not lower than 7.5 N / 25mm, and the adhesive can pass repulping evaluation.

The invention discloses a biosynthesis system for high-yield 1, 6-hexamethylenediamine and application of the biosynthesis system, and belongs to the technical field of biology. According to the method, key genes which are excavated and optimized in a 1, 6-hexamethylenediamine biosynthetic pathway are co-expressed in a single cell module or a multi-cell module, and different enzyme elements expressed by the cell module are subjected to enzyme cascade reaction, so that 1, 6-hexamethylenediamine can be efficiently synthesized by taking caprolactam or 6-aminocaproic acid as a substrate; furthermore, after the carboxylic acid reductase MaCAR is mutated, the catalytic activity of the carboxylic acid reductase MaCAR can be remarkably improved, and the yield of the 1, 6-hexamethylenediamine is further improved; in addition, the biosynthesis system disclosed by the invention directly takes the cell module as a whole-cell catalyst, and an enzyme purification step is avoided, so that the biosynthesis system has the advantage of low cost.

The invention discloses high-thermal-conductivity carbon black and a preparation method and application thereof, and relates to the technical field of carbon black modification.The preparation method of the high-thermal-conductivity carbon black comprises the following steps that carbon black is subjected to oxidation treatment, silanization treatment and tannic acid coating treatment, and modified carbon black is obtained; preparing a graphene / boron nitride / modified carbon black multi-dimensional filler; carrying out primary modification on the graphene / boron nitride / modified carbon black multi-dimensional filler by adopting lignin, polyvinylpyrrolidone and samarium chloride, and then carrying out secondary modification by adopting 6-aminocaproic acid to obtain the high-thermal-conductivity carbon black. The high-thermal-conductivity carbon black prepared by the invention not only has good dispersity, but also can well improve the thermal conductivity and mechanical properties of a rubber matrix.

The application belongs to the technical field of daily chemical industry, and particularly relates to an emulsion and a preparation method thereof. The emulsion provided in the application comprises an emulsifier, glycerol, oil-phase active substance, pentaerythritol tetra(ethylhexanoate) and water; the emulsifier is a lipopeptide; the weight percentage of the lipopeptide and the glycerol is not less than 3%; the weight ratio of the oil-phase active substance and the pentaerythritol tetra(ethylhexanoate) is 1:3-10; the ratio of the sum of the weights of the lipopeptide and the glycerol to the sum of the weights of the oil-phase active substance and the pentaerythritol tetra(ethylhexanoate) is 1:3-10; and the ratio of the sum of the weights of the lipopeptide, the glycerol, the oil-phase active substance and the pentaerythritol tetra(ethylhexanoate) to the weight of the water is 1:1-4. The emulsion is prepared by using sodium bacillomycin, glycerol and pentaerythritol tetra(ethylhexanoate), can effectively inhibit the diffusion of the oil-phase active substance at the interface of the emulsion, reduce the oxidative degradation of the oil-phase active substance, and greatly prolong the effective action time of the oil-phase active substance in the emulsion.

The imine reductase mutant provided by the invention can catalyze asymmetric reductive amination of ethyl 3-formylhexanoate and (S)-2-aminobutanamide to synthesize brivaracetam, two chiral centers of brivaracetam are constructed in one step, and the problems of poor environmental protection property, low atom utilization rate, long route and the like in the existing industrial synthesis route are solved. Wide application prospects are realized.

The invention provides a dihydropyrimidinase mutant, a related product of the dihydropyrimidinase mutant and application of the dihydropyrimidinase mutant in production of a medical intermediate (R)-3-(carbamylmethyl)-5-methylhexanoic acid or an analogue of the (R)-3-(carbamylmethyl)-5-methylhexanoic acid. It is found for the first time that wild type dihydropyrimidinase shown in SEQ ID NO: 1 and a dihydropyrimidinase mutant modified by the wild type dihydropyrimidinase can effectively catalyze a substrate to generate a medical intermediate (R)-3-(carbamylmethyl)-5-methylhexanoic acid; particularly, compared with wild type dihydropyrimidinase, the dihydropyrimidinase mutant has the advantages that the dihydropyrimidinase activity is remarkably improved, the organic solvent tolerance and the high-temperature tolerance are relatively high, and the stereoselectivity of a product obtained by catalysis of the dihydropyrimidinase mutant is relatively high; therefore, the (R)-3-(carbamylmethyl)-5-methylhexanoic acid or the analogue thereof can be produced at lower cost and higher efficiency, and the method has higher industrial value.

The invention discloses an analysis method for detecting short-chain fatty acid in table salt by headspace arrow-shaped solid phase microextraction-gas chromatography mass spectrometry, and belongs to the field of analysis and detection. According to the method, firstly, based on a headspace arrow-shaped solid-phase microextraction technology, polar short-chain fatty acids are extracted and enriched by using an extraction head of 100 [mu] m Polyacrylate, and then gas chromatography-mass spectrometry is used for detection, so that qualitative and quantitative detection of nine short-chain fatty acids such as acetic acid, propionic acid, isobutyric acid, butyric acid, 2-methylbutyric acid, valeric acid, 2-methylvaleric acid, 4-methylvaleric acid and hexanoic acid in the table salt can be realized. According to the method, the headspace arrow-shaped solid-phase microextraction technology is used for extracting the short-chain fatty acid in the table salt for the first time, the effects of interference removal, concentration and enrichment are achieved, and the detection limit of the method is reduced by about 2 orders of magnitude compared with that of a headspace-gas chromatography-mass spectrometry method. The method is simple in sample preparation, high in sensitivity, good in recovery rate and stability and suitable for accurate detection of the short-chain fatty acid in the table salt.

The invention relates to a skin-cleaning composition and application thereof in cleaning cream, and belongs to the technical field of daily chemicals, the skin-cleaning composition comprises the following raw materials: plant fermentation liquor, a chrysanthemum artemisia extract, silk amino acid, cetyl alcohol ethyl hexanoate, PEG-20 glyceryl triisostearate and soapberry seed oil; the preparation method of the plant fermentation liquid comprises the following steps: S1, pretreating part of the raw materials; s2, activating and culturing the strain; and S3, adjusting the pH value of the mixed solution A, performing temperature-controlled sterilization, cooling, adding mannase, performing temperature-controlled enzymolysis, performing enzyme deactivation after enzymolysis is completed, so as to obtain a mixed solution B, cooling, adding a lactobacillus acidophilus fermentation seed solution and a streptococcus thermophilus fermentation seed solution, performing temperature-controlled standing fermentation, performing temperature-controlled sterilization and speed-controlled centrifugation after fermentation is completed, taking supernate, and performing 0.22 mu m membrane microfiltration, so as to obtain the plant fermentation liquor. The raw materials of the skin-cleaning composition provided by the invention have a synergistic effect, so that the skin-cleaning composition has the effects of moisturizing and whitening while effectively cleaning the skin.

The invention provides an anaerobic gas-feeding bacterium subjected to mutagenesis screening and application of the anaerobic gas-feeding bacterium in high-yield acid production through synthesis gas conversion. The anaerobic gas-feeding bacterium is a Clostridium sp. Strain P38 strain, and the preservation number of the anaerobic gas-feeding bacterium is CGMCC (China General Microbiological Culture Collection Center) No.46262. According to the invention, an acid-producing Clostridium sp. Strain P38 strain is obtained through ARTP mutagenesis screening, and through optimization of culture conditions, especially addition of sodium molybdate in a culture system and control of the pH value of the culture system, the maximum concentration of bacteria fermented by the anaerobic gas-feeding bacteria Clostridium sp. Strain P38 and the capability of fermentation acid production are improved, the maximum cell concentration of the strain can reach OD600nm-2. 0Abs, the maximum acetic acid yield is 5g / L, and the hexanoic acid content is 3.5 g / L.

The invention discloses an antistatic PET dust-free film and a preparation method thereof, and relates to the technical field of high polymer materials. When the antistatic PET dust-free film is prepared, firstly, 6-bromohexanoic acid reacts with 4-imidazole-1-butyric acid, and then is subjected to ion exchange with potassium hexafluorophosphate to prepare diacid imidazole hexafluorophosphate ionic liquid; the preparation method comprises the following steps: enabling montmorillonite to react with tetraethoxysilane, 3-aminopropyltriethoxysilane and dodecyl triethoxysilane, so as to obtain modified montmorillonite; carrying out copolycondensation on terephthalic acid, the diacid imidazole hexafluorophosphate ionic liquid, ethylene glycol and the modified montmorillonite to prepare a modified polyester master batch; and carrying out melt blending on the modified polyester master batch and a chain extender, and carrying out blow molding to obtain the antistatic PET dust-free film. The prepared antistatic PET dust-free film has the advantages of being antistatic, flame-retardant, super-hydrophobic and low in dust adhesion rate.

The invention discloses bacillus amyloliquefaciens which is derived from yeast for making hard liquor and has multiple tolerance and hexanoic acid production characteristics as well as a separation method and application of the bacillus amyloliquefaciens. The strain is separated from yeast for making hard liquor, can produce hexanoic acid, has the characteristics of high temperature resistance, acid resistance, ethanol resistance and the like, is identified as bacillus amyloliquefaciens DJ001, is preserved in the China General Microbiological Culture Collection Center (CGMCC), and has the preservation number of CGMCC No.33299. The invention further discloses a method for preparing the caproic acid-resistant yeast for making hard liquor for making hard liquor for making hard liquor for making hard liquor for making hard liquor for making hard liquor for making hard liquor for making hard liquor for making hard liquor for making hard liquor for making hard liquor. When the strain is added into yeast for making hard liquor, the hexanoic acid production capacity and saccharification capacity of the yeast for making hard liquor can be improved, and when the strain is added into fermented grains, the yield of white spirit and the content of ethyl hexanoate can be improved. The method has important values in the aspects of improving the yield and quality of the white spirit, saving the cost, improving the efficiency and the like, and can increase enterprise and social benefits.

An object of the present invention is to provide a coated paper that includes a coating layer containing poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) with few coating defects. As a solution, the present invention provides a coated paper including a coating layer containing poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) and an adhesive, on at least one side of a paper substrate. A solid content weight ratio of the poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) to the adhesive in the coating layer is 99.9 / 0.1 to 60.0 / 40.0.

The present disclosure relates to a method that includes hydrolyzing a polyamide by contacting the polyamide with a hydrolase. In some embodiments of the present disclosure, the polyamide may include nylon-6, nylon 6,6, or a combination thereof. In some embodiments of the present disclosure, the hydrolyzing may produce aminohexanoic acid, an oligomer of aminohexanoic acid, ε-caprolactam, or combinations thereof.

The invention relates to the technical field of microorganisms, in particular to saccharomyces cerevisiae CEC NRI16 and application thereof. The invention provides Saccharomyces cerevisiae CEC NRI16, which is used for wine brewing, can significantly improve the variety aroma and the content of ester substances and terpene substances in dry white wine, especially can promote the generation of ethyl acetate, isoamyl acetate, ethyl hexanoate, ethyl caprate and linalool, reduces the generation of isoamyl alcohol, and improves the yield of wine. The grape wine presents richer fragrance of green fruits such as pears and apples and fragrance of flower fragrance such as violet and roses, and the raw and green taste is effectively reduced. The yeast strain is strong in fermentation capacity and excellent in fermentation performance, and has great value in the aspects of maintaining the typicality of grape wine varieties and enhancing flavor characteristics.

The invention relates to a sunscreen synergistic composition and application thereof. The sunscreen synergistic composition is prepared from a sphingomonas fermentation product extract, wax powder, a dextrin thickener and butyl octanol salicylate, the dextrin thickening agent is prepared from dextrin palmitate and / or dextrin palmitate / ethyl hexanoate. The invention creatively finds that the four components, namely the sphingomonas fermentation product extract, the wax powder, the dextrin thickener and the butyl octanol salicylate, can interact and positively influence one another, and have a synergistic promotion effect which is unexpected by technicians in the field in the aspect of sunscreen synergism. The sunscreen synergistic composition provided by the invention is very suitable for skin care products, mild, non-irritant and good in stability.

The use and composition of a postbiotic of Lactobacillus paracasei ET-22, and the use of a lysate derived from Lactobacillus paracasei ET-22 in freshening breath and / or alleviating or inhibiting halitosis. The lysate is derived from heat-inactivated bacterial cells of Lactobacillus paracasei ET-22, the lysate at least comprises 2-hydroxy-3-phenylpropionic acid, NAD and a polypeptide, and the polypeptide has a structure as represented by formula 1. The postbiotic of and the lysate derived from Lactobacillus paracasei ET-22 can significantly reduce the contents of breath volatile sulfur compounds (VSCs) and salivary volatile organic compounds (VOCs) in the oral cavity, reduce the contents of characteristic flavor compounds, such as indoles, propionic acid and hexanoic acid, and can alter the oral microflora and inhibit the growth of oral biofilms and pathogenic bacteria, thus having the effects of freshening breath and alleviating or inhibiting halitosis.

The invention discloses a preparation method of ulinastatin adsorption resin, and belongs to the technical field of adsorption resin. Comprising the following steps: (1) preparing a water phase: adding pure water, gelatin, cellulose, sodium chloride and lignin into a reaction kettle until the materials are fully dissolved; (2) preparing an oil phase, wherein the oil phase contains divinylbenzene, methyl acrylate, benzoyl peroxide, tert-butyl peroxy-2-ethylhexanoate, triallyl isocyanurate, tripropanol alkyl trimethacrylate and methylbenzene, and the oil phase is uniformly stirred and mixed with the methylbenzene and the trivinylbenzene, the methyl acrylate, the benzoyl peroxide, the tert-butyl peroxy-2-ethylhexanoate, the triallyl isocyanurate, the tripropanol alkyl trimethacrylate and the methylbenzene; (3) suspension polymerization: putting the oil phase into the water phase, and carrying out staged heating reaction; (4) amination reaction; (5) alkylation reaction; and (6) acid-base alcohol treatment. Compared with the existing resin, the resin disclosed by the invention has the characteristics of high adsorption exchange rate, high desorption rate and high desorption concentration on ulinastatin, and the yield of ulinastatin is increased by 1.17 times compared with that of D215 resin.

The invention discloses a method for green and safe synthesis of epsilon-caprolactone from cyclohexanone, and belongs to the technical field of heterocyclic compound and organic chemical raw material manufacturing, and the method comprises the following steps: oxidizing and converting cyclohexanone into a mixture aqueous solution of epsilon-caprolactone, 6-hydroxyhexanoic acid and 6-hydroxyhexanoic acid linear oligomers / oligomers, removing peroxides in the mixture aqueous solution, and obtaining the epsilon-caprolactone. The method comprises the following steps: carrying out polycondensation on a mixture of epsilon-caprolactone, 6-hydroxycaproic acid and a 6-hydroxycaproic acid linear oligomer / oligomer so as to convert the mixture into the 6-hydroxycaproic acid linear oligomer / oligomer, and depolymerizing the 6-hydroxycaproic acid linear oligomer / oligomer so as to convert the 6-hydroxycaproic acid linear oligomer / oligomer into epsilon-caprolactone or / and epsilon-caprolactone cyclic dimer. According to the method, cyclohexanone and hydrogen peroxide are used as reaction raw materials, the organic peroxide is prepared in a non-centralized manner in the whole route, and an organic solvent is not used, so that the combustion and explosion risks caused by the use of a large amount of organic peroxide and organic solvent are greatly reduced, and the yield of epsilon-caprolactone is improved through a polycondensation-depolymerization scheme.

The invention belongs to the technical field of organic synthesis, and particularly relates to an asymmetric phenanthroline compound as well as a preparation method and application thereof. Compared with the original symmetric ligand compound, the asymmetric phenanthroline compound provided by the invention has the advantage that the extraction performance and selectivity of americium are improved. In addition, the asymmetric phenanthroline compound provided by the invention is stable in structure, has good acid resistance and radiation resistance, can be suitable for high-acidity post-treatment waste liquid, improves the fat solubility of the phenanthroline ligand, is easy to split phases, does not need to use 2-bromohexanoic acid and other synergistic extractants, and reduces the introduction of secondary wastes in the post-treatment process.

The invention belongs to the technical field of microbial fermentation, and particularly relates to a new enterobacter rorrhizae strain as well as a separation and screening method and application thereof. In order to enrich microbial resources for producing pyrazine substances through metabolism in the white spirit industry, an enterobacter rorrhizae strain is separated and screened from a mixture of yeast for making hard liquor and fermented grains, and the preservation number is CGMCC No.33262. The strain has good tolerance to pH, salt and alcohol, and can adapt to the growth environment in the white spirit production process; and various pyrazine substances represented by tetramethylpyrazine can be produced. Besides, the strain has strong adaptability to fermented grains, the yield of tetramethylpyrazine is high in a culture medium taking bran, wheat and five grains as the fermented grains, and meanwhile, various flavor substances such as ethyl acetate, ethyl hexanoate, ethyl caprylate, 2, 3-butanediol, guaiacol and 4-vinyl guaiacol can be produced. Therefore, the enterobacter rorrhizae disclosed by the invention can be widely used for brewing white spirit.

The invention relates to the technical field of microorganisms, and particularly discloses a recombinant microorganism and application thereof in production of hexamethylenediamine. Compared with an original strain, the recombinant microorganism disclosed by the invention expresses a carboxylic acid reductase CAR variant, a CAR activating enzyme sfp and putrescine transaminase patA; the amino acid sequence of the carboxylic acid reductase CAR variant is as shown in SEQ ID NO. 28; preferably, adipic acid transporters DcaK and DcaP, acyl CoA transferases DcaI and DcaJ, an acylated succinate semialdehyde dehydrogenase sucD, and a 4-aminobutyric acid transaminase gabT are also expressed. By utilizing the recombinant microorganism, 6-aminocaproic acid / adipic acid can be efficiently converted into hexamethylenediamine, and a new method is provided for green biosynthesis of hexamethylenediamine.

The invention relates to the field of skin care products, in particular to micro-capsule acne removal cream and a preparation method thereof. The micro-capsule acne-removing cream is prepared from the following components: a humectant, a skin conditioner, a suspending agent, a pH regulator and aloe barbadensis leaf water, behenyl alcohol, arachil alcohol, stearic acid, ethylhexyl hydroxystearate, an artemisia annua extract, pentaerythritol tetrakis (ethylhexanoate) ester, polydimethylsiloxane, tocopheryl acetate and squalane are used as raw materials; and carbomer. The anti-acne cream provided by the invention has the novel appearance of transparent gel and coated particles, can form a micro-capsule structure, and has the advantages of enhancing the anti-acne effect and fully exerting the effects of active substances.

The invention relates to ester-producing aroma-producing yeast for making hard liquor as well as a preparation method and application thereof, and belongs to the technical field of liquor making. According to the invention, two microorganisms with high ester yield, namely saccharomyces cerevisiae and pichia pastoris, are screened, and the saccharomyces cerevisiae and the pichia pastoris which are compounded in different proportions are subjected to compound fermentation, so that the yields of ethyl acetate produced by the saccharomyces cerevisiae and the pichia pastoris which are compounded in different proportions are different. The yeast for making hard liquor is subjected to enhanced fermentation according to the optimal inoculation proportion, the content of ethyl acetate, ethyl hexanoate and ethyl lactate of the prepared yeast for making hard liquor is greatly increased, and the saccharifying power, the liquefying power, the fermenting power and the esterifying power of the yeast for making hard liquor are also remarkably improved. In addition, the invention also finds that the pichia pastoris and the saccharomyces cerevisiae of the strengthened yeast are always maintained at a relatively high level in the fermentation process, so that the quality of the yeast can be remarkably improved by compounding the pichia pastoris and the saccharomyces cerevisiae, and the strong aroma is given to the liquor in the fermentation of the Luzhou-flavor liquor.

A composition comprising: i) from 2% to 5% by weight of an aqueous solution comprising a hydrophilic active ingredient; ii) from 1% to 2% by weight of methyl glucose sesquistearate; iii) from 10% to 12% by weight of a polyglycerol-3 ester of a fatty acid; iv) at least 83% by weight of an ester oil selected from the group consisting of cetyl ethylhexanoate, isopropyl isostearate, and ethylhexyl palmitate; and wherein all weight percentages are based on the total weight of the composition; and wherein the sum of i), ii), iii) and iv) does not exceed 100% by weight. A method for dispersing a hydrophilic active ingredient in an oil. A cosmetic or dermatological pharmaceutical formulation comprising the initial composition. The invention also relates to a cosmetic or dermatological pharmaceutical formulation. A method of cosmetic, non-therapeutic treatment and / or care of skin, hair, nails and / or mucous membranes of a subject comprising topical application of a cosmetically effective amount of the composition.

The invention belongs to the technical field of cosmetics, and particularly relates to a slow-release permeation-enhancing composition based on a water-in-oil system as well as a preparation method and application of the slow-release permeation-enhancing composition. The slow-release permeation-enhancing type composition is prepared from the following components in parts by weight: 1 to 6 parts of polydimethylsiloxane PEG-10 / 15 cross-linked polymer, 0.1 to 2 parts of PEG-10 polydimethylsiloxane, 2 to 15 parts of polydimethylsiloxane, 2 to 15 parts of glycerol tri (ethylhexoic acid) ester and 0.01 to 2 parts of squalane. The sustained-release permeation-promoting composition has excellent wrapping capacity on active ingredients, oxidation and decomposition of the active ingredients are reduced, and therefore the activity retention rate of the active ingredients is remarkably increased. Moreover, the composition formed by the specific compound components has unique molecular structure and physical properties, and a wrapping system of the composition can effectively control the release rate of the active components, so that the durability and effectiveness of the application effect of the composition are improved, and the permeation promoting effect of the composition is further enhanced.

The invention belongs to the technical field of genetic engineering, and particularly relates to a saccharomyces cerevisiae esterifying enzyme mutant for catalyzing production of ethyl hexanoate as well as a preparation method and application of the saccharomyces cerevisiae esterifying enzyme mutant. In order to improve the yield of ethyl hexanoate produced by the existing esterifying enzyme, the 28th site, the 69th site, the 125th site, the 180th site and the 214th site of the amino acid sequence of the esterifying enzyme derived from saccharomyces cerevisiae are subjected to substitution and / or deletion and / or insertion of at least one amino acid through a genetic engineering technology to obtain various esterifying enzyme mutants, so that the molecular modification is realized, and the yield of ethyl hexanoate produced by the esterifying enzyme is improved. Therefore, the reaction activity of catalyzing the esterification enzyme to produce ethyl hexanoate is improved. According to the method, the biosynthesis efficiency of ethyl hexanoate is improved through enzyme molecule modification, new power is injected for transformation and upgrading of the modern brewing industry, and the traditional brewing industry is promoted to develop towards the intelligent and precise direction.

The invention discloses an MXene-based fiber, an electromagnetic shielding fabric and a preparation method and application thereof, the preparation method comprises the following steps: uniformly mixing polyvinyl alcohol and an MXene solution in proportion to obtain a spinning solution, injecting the spinning solution into a calcium ion coagulating bath for curing, and washing and drying the cured fiber to obtain a dried fiber; the preparation method comprises the following steps: mixing polymerizable isocyanate (PMDI), acetonitrile and methyl hexanoate in proportion to obtain a cross-linking agent; and immersing the obtained dried fiber in a cross-linking agent, reacting at 60-80 DEG C for set time, and then cleaning and drying to obtain the MXene-based fiber. The fiber / fabric has good flexibility, mechanical properties and electromagnetic shielding effectiveness of multi-mode response (orientation / humidity / temperature / light). Due to the multi-mode response behavior, when the textile receives external stimulation, the wide-range shielding performance can be automatically adjusted.

The invention relates to a saccharomycetes strain with high yield of esterifying enzyme and application thereof, the classification name of the saccharomycetes strain is Wickerhamomyces anomalus, the saccharomycetes strain is preserved in China General Microbiological Culture Collection Center on March 21, 2025, the preservation number is CGMCC 33925, and the address of the preservation unit is No.3, Yard 1, Beichen West Road, Chaoyang District, Beijing. The strain screened by the invention has the ability of high yield of esterifying enzyme, and can synchronously catalyze synthesis of a plurality of key esters such as ethyl acetate, ethyl hexanoate, ethyl lactate and the like. Through the synergistic effect of polyesters, the flavor level of the liquor body is richer, and the liquor body is close to the composite aroma characteristic of the traditional solid fen-flavor liquor. The strain is naturally adapted to brewing of fen-flavor liquor and intensified application of medium and low temperature yeast, exogenous enzyme dependence is reduced, and the esterification capacity of yeast is improved.

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 relates to the technical field of surface treatment, in particular to a bio-based degradable cable material and a preparation method thereof. The bio-based degradable cable material is prepared from 55 to 65 parts of matrix resin mixed by poly L-lactic acid and poly-3-hydroxybutyrate-3-hydroxyhexanoate, 4 to 6 parts of dianhydride modified castor oil polyol, 10 to 15 parts of polypentamethylene diamine adipate, 5 to 8 parts of nano reinforcing filler, 6 to 10 parts of bio-based plasticizer, 0.5 to 1.0 part of antioxidant and 8 to 12 parts of environment-friendly flame retardant. A dynamic ester bond cross-linked network formed by the reaction of a dynamic ester bond cross-linking agent dianhydride modified castor oil polyol only undergoes ester bond breakage at a high temperature exceeding a normal working range to release stress, and the temperature returns to normal and can be recombined; the semi-interpenetrating network reinforced phase poly (pentamethylene diamine adipate) and the matrix resin form an interpenetrating structure in a molecular chain interpenetrating manner, a stable heat-resistant skeleton is constructed, high-temperature deformation is effectively inhibited, the overall degradability of the material is ensured by the bio-based structure, and the balance of heat resistance and degradability is realized.