125 results about "Phenethyl alcohol" patented technology

The invention discloses hansenula polymorpha with low ethanol yield and high aroma yield and application of hansenula polymorpha, and belongs to the technical field of microorganisms. According to the invention, a strain of high-aroma-yield saccharomycetes, which is hanseniaspora uvarium, is separated from fruits, and the preservation number of the saccharomycetes is CCTCC (China Center for Type Culture Collection) NO: M 20242562. The quality of the low-alcohol yellow peach beverage fermented by the high-aroma-yield strain provided by the invention is improved, and the alcoholic strength after fermentation is well reduced and is only 0.4% vol. Through flavor substance detection before and after fermentation, flavor substances generated by the strain are rich in variety, for example, 90.73 mu g / kg of phenethyl alcohol is newly generated. Sensory evaluation shows that the low-alcohol yellow peach beverage fermented by the strain is outstanding in flower fragrance and fruit fragrance, the richness and the balance degree are improved, it is proved that the overall flavor characteristics of the low-alcohol beverage can be remarkably improved, and more pleasant sensory experience is brought to consumers.

The invention relates to the technical field of microorganisms. The invention particularly relates to vineyard hansenula polymorpha and application of the vineyard hansenula polymorpha in wine brewing. The vineyard hansenula polymorpha HV-26 is preserved in the China General Microbiological Culture Collection Center on January 14, 2025, the preservation date is January 14, 2025, and the preservation number is CGMCC No.33403. The invention further discloses a preparation method of the vineyard hansenula polymorpha HV-26. The vineyard hansenula polymorpha HV-26 and saccharomyces cerevisiae QA23 are mixed to inoculate and ferment the Guixiang wine, the content of esters and phenethyl alcohol in the wine can be greatly increased, the concentration of bad flavor volatile acid is reduced, and therefore the flower and fruit fragrance of the Guixiang wine is enhanced, the problem that the fragrance is single when commercial saccharomyces cerevisiae is inoculated and fermented independently is solved, and the wine quality is improved. The hansenula polymorpha HV-26 is more complex in fragrance and more prominent in layering sense and style, and has good industrial application potential in wine brewing.

The invention discloses Klebsiella and application thereof, and belongs to the technical field of microorganisms. According to the invention, firstly, a strain LLMJ-DNXJ-01 with high yield of tannase is screened from wine-making yeast, the identification result shows that the strain belongs to klebsiella, then the tannase activity of the strain is investigated, and the result shows that the enzyme activity reaches 8.8 + / -0.02 U / mL. In addition, the invention also investigates the application of the strain in degrading sorghum tannin, the sorghum tannin degradation rate reaches 34.95%, and isoamyl alcohol, isopentenol, caryophyllene, phenethyl alcohol, 4-vinyl guaiacol and other volatile aroma substances with Daqu characteristics can be generated through fermentation. Therefore, by integrating the tannase production capability of the strain LLMJ-DNXJ-01 and the sorghum tannin degradation and fermentation aroma production capability, the strain has relatively good development potential in the aspects of manufacturing of reinforced yeast for making hard liquor and quality improvement and aroma enhancement of white spirit.

The invention discloses engineered saccharomyces cerevisiae and application of the engineered saccharomyces cerevisiae in synthesis of 2-phenethyl alcohol, and belongs to the technical field of genetic engineering. According to the engineering saccharomyces cerevisiae, saccharomyces cerevisiae CICC 33068 is modified, and the strain is modified through strategies such as aldrin pathway enhancement, precursor enhancement, tolerance optimization and cofactor balance. The constructed engineered strain has good metabolic performance and stability, not only is the tolerance of the engineered strain to 2-phenethyl alcohol improved, but also the production capacity of the 2-phenethyl alcohol is remarkably improved. Therefore, the engineered saccharomyces cerevisiae disclosed by the invention has remarkable advantages in production of the 2-phenethyl alcohol, can provide technical guidance for industrial production of the 2-phenethyl alcohol, and has a good application prospect.

The invention belongs to the technical field of forest chemical industry and natural perfume extraction and separation, and particularly discloses a superheated steam distillation separation and recovery method for perfume components in cinnamon oil rectifying still residues. The method comprises the following steps: processing the cinnamon oil rectifying still residues by adopting a steam distillation method taking normal-pressure superheated steam as a desorption medium, carrying out condensation cooling and phase separation on distilled oil-water mixed gas, and collecting oily liquid or crystalline solid containing cinnamon spice components, and carrying out one or more physical isolation methods such as freezing crystallization, vacuum fractionation or rectification, recrystallization and the like to obtain natural cinnamon monomer spices such as o-methoxycinnamaldehyde, o-methoxycinnamic acid, phenethyl alcohol and the like. The method has the advantages of low equipment investment, simple and feasible operation, low production cost, clean and pollution-free process, good operation safety, high industrial application feasibility and the like.

The invention discloses yoghurt oil with fruity flavor and a preparation method of the yoghurt oil, and belongs to the technical field of yoghurt oil processing. The Lactococcus lactis SITRS-0011 provided by the invention can be independently used as a leavening agent, when the Lactococcus lactis SITRS-0011 is used for fermenting yoghurt oil, the titration acidity can reach 83.21 DEG T, the yoghurt oil contains 2, 3-butanedione (1180 [mu] g / kg), acetoin (2092 [mu] g / kg), lactones (623 [mu] g / kg), 3-methylbutyraldehyde (117 [mu] g / kg), phenethyl alcohol (1863 [mu] g / kg), phenylacetaldehyde (336 [mu] g / kg) and other substances, and the Lactococcus lactis SITRS-0011 is rich in milk flavor, has flower fragrance and nut flavor, is unique in flavor, and can be used for preparing the and the overall sensory score is high.

The invention discloses a strain of saccharomyces cerevisiae CPJ-02 with high acid resistance, high ethanol content and strong ester aroma generation and application of the saccharomyces cerevisiae CPJ-02, the strain of the saccharomyces cerevisiae CPJ-02 has been preserved in China Center for Type Culture Collection on June 27, 2024; the preservation number of the strain is CCTCC NO: M 20241388. The saccharomyces cerevisiae CPJ-02 strain is milky white to faint yellow after being cultured on a YPD solid plate for 48 hours, the surface is dry and matte, the texture is slightly rough, and the colonial morphology is round. The saccharomyces cerevisiae CPJ-02 strain has prominent high ethanol tolerance, and still has activity greater than or equal to 92% in a 12% ethanol environment; and the fermentation product is rich in aroma and high in ethyl caprylate and phenethyl alcohol content, more than or equal to 25 volatile substances are detected by GC-MS (gas chromatography-mass spectrometry), and the fermented product is rich in fruit fragrance and has ester flower fragrance. The saccharomyces cerevisiae CPJ-02 strain is suitable for production of high-concentration wines and directional production of low-concentration healthy fermented beverages, fermented foods and aroma compounds.

The invention provides an essence with a jasmine tea flavor. Comprising leaf alcohol, linalool, phenethyl alcohol, alpha-amyl cinnamic aldehyde, hexanal, benzyl acetate, jasmine absolute oil, neroli oil, leaf alcohol acetate, indole, geraniol, geranyl acetate, linalyl acetate, methyl dihydrojasmonate, farnerol, alpha terpilenol, damascenone B, ionone B, benzyl acetate, benzyl alcohol, leaf alcohol benzoate and ethyl maltol. The compound is one or more of methyl anthranilate, methyl benzoate and methyl salicylate. The jasmine tea beverage food added with the jasmine tea flavor essence disclosed by the invention can effectively modify and improve the flavor of the jasmine tea beverage, increase the tea fragrance and flower fragrance of the jasmine tea beverage, and enable the fragrance and taste to be richer and fuller.

The invention discloses a method for preparing an olefin-substituted aromatic boronic acid, and belongs to the technical field of pharmaceutical intermediates. Chloroacetophenone is used as a raw material, and chloro-1-phenylethanol is obtained by reduction with a reducing agent, and then a chlorostyrene solution is obtained by dehydration with an acid catalyst in a high boiling point solvent, and finally a chlorostyrene solution is reacted with a strong base reagent and a borate ester in a continuous flow, and acid hydrolysis is performed to obtain vinylbenzene boronic acid. The present invention adopts a high-temperature negative pressure dehydration method to prepare a key intermediate of chlorostyrene, with high conversion rate, few polymerization by-products, and rapid reaction; the boration reaction of chlorostyrene adopts a continuous flow method to improve reaction specificity, reduce reaction safety, and can efficiently and safely prepare high-quality vinylbenzene boronic acid.

The invention belongs to the technical field of tea quality regulation and control, and particularly relates to a key sniffing substance for improving white tea pekoe flavor and a screening method and application thereof, the screening method comprises the following steps: firstly collecting typical pekoe white tea samples and preparing mixed samples, and identifying 77 sniffing substances by adopting stirring rod adsorption extraction in combination with a gas chromatography-sniffing / mass spectrometry technology; the method comprises the following steps: determining phenethyl alcohol and epi-piper cubeba alcohol as key pekoe aroma substances through aroma dilution analysis and quantitative analysis by a standard addition method in combination with aroma recombination and deletion experiments; the screened key substances are added into a tea blank matrix according to the concentration and proportion in a tea sample, and the pekoe flavor characteristic flavor (Plt; 0.05) can be remarkably improved. According to the invention, the key substance basis of white tea pekoe fragrance is determined for the first time, and the screened pekoe fragrance key smelly substance can be directly applied to quality regulation and control of white tea production and deep processing product development.

The invention belongs to the technical field of microorganisms, and particularly relates to kluyveromyces marxianus and application thereof in preparation of rose fruity fermented milk. The Kluyveromyces marxianus strain is named as ALE-X20, is preserved in the China General Microbiological Culture Collection Center (CGMCC), is classified and named as Kluyveromyces marxianus, has the preservation number of CGMCC NO.32221, and is preserved on October 15, 2024. The Kluyveromyces marxianus ALE-X20 disclosed by the invention can efficiently convert an amino acid substrate into a key flavor substance, namely, 2-phenethyl alcohol, of rose fruit fragrance, so that the unique rose fragrance is given to the fermented milk under the condition that no essence or spice is added.

The invention discloses saccharomyces cerevisiae XJ-YSSCE010-1 with high temperature resistance, high ethanol yield and low fusel oil yield and application of the saccharomyces cerevisiae XJ-YSSCE010-1, and belongs to the technical field of microbial fermentation. The saccharomyces cerevisiae XJ-YSSCE010-1 disclosed by the invention is separated and screened from Maotai-flavor liquor yeast, and is preserved in the China General Microbiological Culture Collection Center (CGMCC), and the preservation number is CGMCC No.31174. The fusel oil comprises the following main components: n-propanol, isobutanol, isoamyl alcohol, phenethyl alcohol and the like, wherein isobutanol and isoamyl alcohol have the highest toxicity. The saccharomyces cerevisiae XJ-YSSCE010-1 disclosed by the invention shows the advantages of high yield of ethanol, low yield of fusel oil and no production of isobutanol and isoamyl alcohol in liquid fermentation and simulated high-temperature stacking fermentation experiments, and the saccharomyces cerevisiae XJ-YSSCE010-1 is applied to preparation of white spirit, so that the production efficiency of the white spirit is improved, and the quality of the white spirit is improved.

The invention discloses Leishan fish sauce sour essence as well as a preparation method and application thereof. The leishan fish sauce acid essence is prepared from ethyl acetate, absolute ethyl alcohol, ethyl isovalerate, ethyl hexanoate, isoamyl alcohol, furfuryl alcohol, ethyl lactate, ethyl caprylate, acetic acid, diethyl succinate, methyl salicylate, ethyl benzoate, ethyl laurate, hexanoic acid, phenethyl alcohol, 4-methyl guaiacol, ethyl myristate, ethyl palmitate, ethyl oleate, capsicum oleoresin, ethyl phenylacetate and ginger oil. And lactic acid, glycerol triacetate, ocimene, ethyl isovalerate, ethyl butyrate, anethole and phenylacetaldehyde. The Leishan fish sauce sour essence disclosed by the invention is soft and harmonious in overall fragrance, natural and vivid, still has stable flavor characteristics at high temperature, can make up the problem of flavor deficiency in sour soup products, realizes accurate reproduction and controllable release of composite fragrance, improves the standardization level of products, and effectively improves the preference degree of consumers.

The present invention discloses a variable-valence metal mercapto two-dimensional coordination polymer, its preparation method and application. The method comprises the following steps: S1. Mix an inorganic metal salt and 4,4'-thiobis(phenethyl alcohol) in a mixed solvent of an ionic liquid, an organic amine, N,N-dimethylformamide and isopropanol. After complete dissolution, carry out an ionothermal reaction; S2. Separate the mixture after the ionothermal reaction, and then wash and dry the separated solid phase with an alcohol until a pure-phase colored or colorless octahedral crystal is obtained, namely, a variable-valence metal mercapto two-dimensional coordination polymer is obtained; the variable-valence metal mercapto two-dimensional coordination polymer is an organic-inorganic hybrid compound, which is a colored or colorless octahedral crystal and can be applied to catalytic, electrical conductance, and photothermal conversion devices.

The present application provides compositions and methods for treatment of ocular inflammatory conditions, dry eye diseases, and abnormal corneal neovascularization, using etiprednol. In one example, a composition is provided comprising a semi-fluorinated alkane compound such as, e.g., perfluorohexyloctane; and an additive selected from paraffin, propylene glycol diacetate (PGD), a hydroxyalkyl ester of an aliphatic fatty acid, a hydroxyacid alkyl ester, an alkyl ester of a fatty acid, phenethyl alcohol, ethanol, isopropanol, glycerol, propylene glycol, polyethylene glycol, n-butanol, or combinations thereof. Eye drops comprising the compositions are also provided. Methods of using the compositions are also provided and include methods for reducing one or more symptoms of ocular inflammatory conditions, dry eye diseases, or abnormal corneal neovascularization.

The disclosure relates to oral care compositions comprising guanidine in free or orally acceptable salt form, a cationic quaternary ammonium compound (e.g., a pyridinium compound) (e.g., cetyl pyridinium chloride (CPC)), a fluoride source, and optionally a zinc source (e.g., zinc lactate or zinc citrate and zinc oxide) as well as to methods of using and of making these compositions. 20 25 20 43 72 12 J un 2 02 5 2 0 2 5 2 0 4 3 7 2 1 2 J u n 2 0 2 5 A B S T R A C T T h e d i s c l o s u r e r e l a t e s t o o r a l c a r e c o m p o s i t i o n s c o m p r i s i n g g u a n i d i n e i n f r e e o r o r a l l y a c c e p t a b l e s a l t f o r m , a c a t i o n i c q u a t e r n a r y a m m o n i u m c o m p o u n d ( e . g . , a p y r i d i n i u m c o m p o u n d ) ( e . g . , c e t y l p y r i d i n i u m c h l o r i d e ( C P C ) ) , a f l u o r i d e s o u r c e , a n d o p t i o n a l l y a z i n c s o u r c e ( e . g . , z i n c l a c t a t e o r z i n c c i t r a t e a n d z i n c o x i d e ) a s w e l l a s t o m e t h o d s o f u s i n g a n d o f m a k i n g t h e s e c o m p o s i t i o n s . 2 0 2 5 2 0 4 3 7 2 1 2 J u n 2 0 2 5

To provide a chocolate composition having a delicious coffee flavor with a balanced combination of bitterness, fruity aroma and body; and a method for producing the same.SOLUTION: The present invention provides a chocolate composition in which the content of ethyl acetate is adjusted to 5-1500 ppb and / or the content of phenethyl alcohol is adjusted to 5-1500 ppb, and the total content of kahweol palmitate and cafestol palmitate is adjusted to 700-7800 mg / kg.SELECTED DRAWING: None

The invention discloses a continuous hydrogenation rectification preparation method of 4-dimethylamino-2, 2, 6, 6-tetramethylpiperidine, and the preparation method comprises the following steps: premixing: adding triacetonamine and one of solvents (methanol, ethanol, isopropanol and phenethyl alcohol) into a premixing kettle according to a certain mass ratio of 10: (1-5), starting stirring, and transferring a premixed solution to an intermediate temporary storage tank for heat preservation; the method comprises the following steps: loading a certain amount of a catalyst in a fixed bed reactor, purging the fixed bed reactor with nitrogen, metering by a flowmeter, respectively introducing into the fixed bed reactor, transferring a hydrogenation liquid containing 4-dimethylamino-2, 2, 6, 6-tetramethylpiperidine into a rapid removal kettle to remove water, a solvent and part of impurities in the hydrogenation liquid, and carrying out solid-liquid separation to obtain the 4-dimethylamino-2, 2, 6, 6-tetramethylpiperidine. According to the process preparation method, continuous flow reaction purification is carried out, the product is stable in property and higher in yield, the product is continuously pumped into the front rectifying tower to remove light component impurities, and then the material at the bottom of the front rectifying tower is pumped into the rear rectifying tower to remove heavy component impurities.

The invention discloses a preparation method of a copper-mediated multi-active-site catalyst and application of the copper-mediated multi-active-site catalyst in thermal dissolution polymerization of low-rank coal, copper nitrate, cobalt nitrate and cerous nitrate are dissolved in deionized water in proportion, heated and stirred to be uniform, and a sodium hydroxide solution is dropwise added for co-precipitation to obtain turbid liquid; and carrying out low-temperature crystallization, high-temperature hydrothermal treatment, centrifugal washing to be neutral, vacuum drying, grinding into powder, high-temperature calcination, cooling and hydrogen reduction to finally obtain the Cu / CoOx-CeO2 catalyst. The catalyst has the advantages of excellent hydrogenation reduction capacity, high product selectivity, low preparation cost and the like, and low-rank coal depolymerization can be realized in various reaction solvents; for hydrogenation reaction of dimer or monomer model compounds such as 2-phenoxy-1-phenethyl alcohol, not only can catalytic transfer hydrogenolysis of C-O bonds be realized in low-carbon alcohol, but also intramolecular self-hydrogen transfer hydrogenolysis can be realized by utilizing self structural characteristics of a substrate, so that the atom utilization rate is increased.

The invention belongs to the technical field of bioengineering, and particularly relates to a BmoR protein mutant sensitively responding to phenethyl alcohol and application of the BmoR protein mutant in phenethyl alcohol detection or a biosensor. The BmoR protein mutant is obtained by mutation containing S184T on the basis of a wild type BmoR protein as shown in SEQ ID NO. 1 in a sequence table. The S184T mutant sensitively responds to phenethyl alcohol, so that the problem that wild type BmoR protein does not respond to a phenethyl alcohol high-yield strain is solved; meanwhile, the detection range of S184T on phenethyl alcohol reaches 0-30 mM, the response saturation of BmoR protein on phenethyl alcohol is improved, and the S184T can be used for screening and application of strains with higher yield.

The present invention provides a novel fragrance composition for sleep improvement and a novel cosmetic for sleep improvement. A fragrance composition for sleep improvement according to the present invention contains the following aromatic components in the following mass ratio: 500 parts by mass of 1,4-dimethoxybenzene, 50 to 300 parts by mass of phenethyl alcohol, and 20 to 250 parts by mass of linalool. A cosmetic for sleep improvement of the present invention contains the fragrance composition for sleep improvement of the present invention.

The invention relates to a mycobacterium hydrolase and application thereof in preparation of flavors and fragrances, and belongs to the fields of enzyme engineering and mining and application of new enzyme resources. The hydrolase comes from mycobacteria, and the amino acid sequence of the hydrolase is shown as SEQ ID No: 2; the hydrolase MdHDL disclosed by the invention has relatively high catalytic activity and substrate concentration tolerance, and can efficiently utilize benzyl alcohol or phenethyl alcohol to react with p-nitrophenyl methyl acetate pNPA, p-nitrophenyl methyl butyrate pNPB or p-nitrophenyl methyl caprylate pNPO to synthesize essence and perfume substances with different flavors; the method is suitable for preparing flower fragrance and fruit fragrance type flavors and fragrances such as jasmine flower fragrance, rose fragrance, pineapple fragrance, banana fragrance and apricot fragrance by an enzyme method, has obvious industrial production potential, and provides technical basis and method guidance for preparing the flower fragrance and fruit fragrance type flavors and fragrances by the enzyme method.

The invention belongs to the technical field of agricultural pest control, and particularly relates to a novel drosophila melanogaster attractant and a preparation method and application thereof. The invention discloses a novel drosophila melanogaster attractant which comprises the following components in percentage by mass: 10%-20% of brown sugar, 1%-5% of acetic acid, 1%-5% of ethanol, 1%-5% of phenethyl alcohol, 0.5%-2.0% of oleic acid, 0.1%-1% of palmitoleic acid, 0.1%-0.5% of sodium benzoate, 0.2%-0.5% of ascorbic acid, 0.2%-0.3% of sodium carboxymethyl cellulose, 0.5%-1.0% of sodium dodecyl benzene sulfonate and the balance of water. Field test results show that the novel drosophila melanogaster attractant is high in trapping rate of drosophila melanogaster on fruit crops, the used raw materials are low in price, the preparation process is simple, the dosage form is a liquid dosage form, field application is facilitated, the novel drosophila melanogaster attractant can be widely applied to prevention and control of field drosophila melanogaster, and the market prospect is good.

The invention relates to the field of medicinal chemistry, and in particular relates to a 4-(1-(azacyl-3-butyl)-1H-imidazole-2-yl) aniline PKM2 agonist. Compared with an original drug, the novel PKM2 agonist for treating aortic dissection provided by the invention has the advantages that the agonistic activity of each concentration of the compound is obviously superior to that of the original drug, and AC50 is equivalent to that of a positive drug, so that the novel PKM2 agonist has a wide application prospect.

The invention belongs to the technical field of electrochemistry, and particularly relates to an electrode applied to preparation of phenylacetic acid by electrochemical oxidation of beta-phenethyl alcohol and a preparation method and application thereof. The electrode comprises a substrate and a plating layer arranged on the surface of the substrate, and the plating layer comprises iron, cobalt and nickel. According to the electrode, beta-phenethyl alcohol can be converted into phenylacetic acid through high-selectivity electrochemical catalysis, the selectivity and the current efficiency of the product phenylacetic acid are both larger than 90%, side reactions such as oxygen evolution can be greatly inhibited in the electrolysis process, the oxygen content is smaller than 5%, and it is guaranteed that the electrolysis reaction is carried out safely.

The utility model relates to a device for refining acetophenone and alpha-phenethyl alcohol, which comprises a first rectifying tower provided with a first inlet, a first outlet, a first discharge port and an extractant inlet; the second rectifying tower is provided with a second inlet, a second outlet and a second discharge port, and the second inlet is communicated with the first discharge port; the third rectifying tower is provided with a third reboiler which is provided with a third inlet, a third outlet and a third discharge port, the third outlet is formed in the top of the third rectifying tower, the third discharge port is formed in the bottom of the third rectifying tower, and the third reboiler of the third rectifying tower is communicated with the second outlet; the material flowing out of the second outlet is condensed by a third reboiler and then is branched into two paths, one path flows back to the upper part of the second rectifying tower, and the other path is communicated with a third inlet; the cooler is provided with a material inlet and a liquid outlet, the material inlet is communicated with the third outlet, and the liquid outlet is used for discharging alpha-phenethyl alcohol. The energy consumption is reduced.

The invention relates to the technical field of non-alcoholic beverages, in particular to a zero-alcohol cocktail beverage with slight alcoholic flavor and a preparation method thereof, the beverage contains the following characteristic flavor compounds: 80-150 mg / L of ethyl hexanoate, 180-250 mg / L of phenethyl alcohol, 180-280 mg / L of isoamyl alcohol, 2.5-4.0 mg / L of beta-damascenone, and the balance of water. The alcohol content of the beverage is less than 0.05 volume percent, and accurate construction of complex flavor levels is realized by taking ethyl hexanoate as a fruit aroma main body, phenethyl alcohol as a wine aroma carrier and beta-damascenone as passion fruit characteristic aroma.

An aqueous skin-compatible antimicrobial solution effective against yeasts and mycobacteria, comprises 2-3.8 wt % of at least one peroxygen; from 1.5 up to 7 wt % of at least one aromatic monohydroxy alcohol selected from phenoxyethanol, phenethyl alcohol, cyclopentylmethanol, cyclohexylmethanol, benzyl alcohol, or any mixture thereof; from 0.5 up to 5 wt % of at least one high foaming amine oxide amphoteric surfactant; from 2 up to 10 wt % of at least one polyol-based skin conditioning agent; an effective amount of at least one pH adjusting agent for adjusting the solution pH to 2-3. The solution has a redox potential value from 220 to 280 mV, is readily biodegradable, and is free of aromatic carboxylic acids, inorganic salts, quaternary ammonium compounds, volatile aliphatic monohydroxy alcohols, other volatile organic compounds, halogen containing compounds, and other antimicrobial agents.

The invention discloses a synthesis method of hydroxytyrosol. The synthesis method comprises the following steps: (1) reacting p-hydroxyphenethyl alcohol as shown in a formula 1 with a bromination reagent in ethyl acetate at 0-25 DEG C to generate p-hydroxybromophenethyl alcohol as shown in a formula 2; (2) under the protection of nitrogen, reacting p-hydroxybromophenethyl alcohol in an aqueous solution of alkali in the presence of a copper catalyst and a ligand at 80-100 DEG C to generate hydroxytyrosol as shown in a formula 3; the copper catalyst is cuprous bromide; the ligand is phenanthroline. The raw materials and solvents required by the synthesis method are cheap and easy to obtain, the operation process is convenient and easy to implement, the synthesis method is environment-friendly, the reactant yield is high, the quality is good, and the synthesis method is suitable for industrial large-scale production.

The invention relates to the field of photocatalytic materials, and discloses triazine-heptazine homojunction carbon nitride as well as a preparation method and application thereof. According to the preparation method, dicyandiamide, potassium chloride and lithium chloride are taken as raw materials, the high-crystallinity triazine-heptazine homojunction carbon nitride is prepared by a one-step method by limiting the heating rate and calcining time in a vacuum environment and controlling the proportion of triazine to heptazine structures, and the high-crystallinity triazine-heptazine homojunction carbon nitride is applied to a photocatalytic depolymerization reaction of lignin, so that the high-crystallinity triazine-heptazine homojunction carbon nitride is obtained. The obvious catalytic activity and selectivity are embodied. The method is simple to operate, mild in reaction condition and easy to synthesize, and has a certain industrial application prospect. The triazine-heptazine homojunction carbon nitride prepared by the method disclosed by the invention has shorter carrier lifetime of 4.03 ns and lower exciton binding energy of 18.1 meV. The obtained triazine-heptazine homojunction carbon nitride is used as a photocatalyst, and in the reaction of depolymerizing a lignin model compound 2-phenoxy-1-phenethyl alcohol, the conversion rate is as high as 98%.