61 results about "Nonanal" patented technology

The invention relates to a preparation method of nonanal and methyl formylcaprylate. The method comprises the following steps: epoxidized methyl oleate is used as a raw material to react under the action of catalyst and generate nonanal and methyl formylcaprylate, wherein the reaction temperature is 40-100 DEG C, the pressure is atmospheric pressure; the mesoporous molecular sieve which is treated with 10-35% hydrogen peroxide is taken as a carrier for the catalyst, the weight ratio of tungsten used as main catalyst to the weight of the carrier is 0.005-0.1, and the weight ratio of one of titanium and molybdenum, used as cocatalyst to the weight of the carrier is 0-0.1. The invention has the following beneficial effects: by adopting the technical scheme that the reaction temperature is 40-100 DEG C, the pressure is atmospheric pressure; the mesoporous molecular sieve is taken as a carrier for the catalyst, tungsten is used as a main catalyst and titanium or molybdenum used as cocatalyst is added or not, the problem can be solved well. The preparation method provided by the invention has mild reaction conditions, low cost and higher product yield and is suitable for industrial production.

The present invention discloses a cotesia plutellae kurdjumov attractant and a preparation method thereof, wherein liquid paraffin is adopted as a solvent, and 100 mul / ml benzaldehyde, farnesene, phenylacetonitrile, cis-3-hexenol, trans-2-hexenal, eucalyptol and nonanal are subjected to the same ratio mixing to obtain the attractant. The attractant is specific component screened from plant volatile substances, and has characteristics of high selectivity and strong targeting property. With the attractant, cotesia plutellae kurdjumov early enters a target prevention and control field, enters a search state, and do not flee so as to enhance host search and attack efficiency, increase parasitism rate, and provide important importance for cotesia plutellae kurdjumov pest controlling effect increase, vegetable field pest management improvement and the like.

The invention discloses a black soybean milk flavor and a preparation method and an application thereof. The flavor comprises isovaleric aldehyde, methyl alcohol, isopentyl alcohol, hexanal, 2-methylpyrazine, furfural, trans-2-hexenal, furfuryl alcohol, hexyl alcohol, 2-heptanone, heptanal, 2-acetylfuran, 2, 5-methylpyrazine, 2, 3-dimethyl pyrazine, trans-2-heptenal, 5-methyl-furfural, benzaldehyde, heptanol, 1-octen-3-alcohol, 2-pentyl-furan, caprylaldehyde, 2-acetyl thiazole, trans-2-octenyl aldehyde, octanol, nonanal, capraldehyde, trans,trans-2,4-nonadienal, trans-2-decenal, 2-undecanone,trans,trans-2,4-heptadienal, trans-2-undecenal and propylene glycol. The method comprises the following steps: evenly mixing the above constituents, stewing and curing for 15 days, subpackaging to obtain the black soybean milk flavor. The flavor has convenient raw materials sources, mild fragrance and high naturalness, and is applied to preparing the beans products, is especially used for preparing black soybean milk beverage, not only can enhance mouthfeel, but also can better cover soil mildewed flavor brought by beans in basic materials.

The present invention relates to a kind of air purifying agent, it is characterized in that: comprise gingerone, gingerol, menthol, menthone, phellandrene, pinene, terpineol, citral, octanal, nonanal, geraniol, Linalool, decanal, the weight ratio is: gingerone 0.01-0.1‰, gingerol 0.05-0.5‰, menthol 0.15-0.5‰, menthone 0.1-0.3‰, phellandrene 0.2-0.4‰, pinene ene 0.1-0.3‰, terpineol 0.05-0.2‰, citral 0.2-0.5‰, octanal 0.02-0.1‰, nonanal 0.02-0.1‰, geraniol 0.2-0.5‰, linalool 0.1-0.3‰ , decanal 0.05-0.2‰. The air purifying agent of the present invention is compounded from pure natural plant juice, is an all-natural product, and is non-toxic, non-irritating and non-explosive. Compared with the chemical deodorants currently used in deodorization on the market, its safety is better, and there is no secondary pollution after the product reacts with the odor.

The invention discloses a method for preparing nonanal by adopting a loop reactor. According to the method, n-nonanal is prepared through an octene hydroformylation reaction;1-octene, hydrogen and carbon monoxide are used as raw materials, triphenylphosphine tri-m-sulfonic acid sodium salt and rhodium chloride are used as catalysts, and octene hydroformylation reaction is carried out. A water / oil / gas three-phase reaction interface is increased through the loop reactor; the mass transfer rate among reaction raw materials 1-octene, synthesis gas (hydrogen and carbon monoxide) and a catalyst aqueous solution is increased; the conversion rate of the hydroformylation reaction is improved, the design parameters and related process parameters of the core part venturi ejector of the loop reactor are optimized, the conversion rate of octene is further improved, and the selectivity of n-nonanal in the product is improved.

The invention discloses a reed leaf essence and a preparation method thereof. The reed leaf essence is prepared by mixing and then uniformly stirring the following components by mass percent: isophorone, 1% cis-4-hepen-1-al, vanillin, 10% ethyl myristate, 1% ethyl laurate, 2,4-dimethyl-5-acetyl thiazole, 1% 2,5-dimethyl pyrazine, 1% methyl cyclopentenolone, 1% 2-acetyl pyridine, mercaptan, leaf alcohol, sulfurol acetate, nonanal, 1% oxoisophorone, 20% furanone, ethyl maltol, maltol, vanilla bean tincture and a solvent. The raw materials used by the reed leaf essence are readily available, and the obtained reed leaf essence has a fresh, harmonious and soft fragrance, and a typical aroma of natural reed leaves, and is rich, lasting and stable in fragrance. The reed leaf essence can be used for flavoring rice dumplings, ice cream, cake and other foods.

The invention belongs to a new process for synthesizing natural identical perfume nonanal. The method comprises the following steps: mixing and stirring 36 grams of trichloroiminocyanuric acid, 580 milliliters of trichloromethane, 33 grams of calcium oxide and 75 grams of nonanol; dripping 20 milliliters of trichloromethane solution containing 0.4 gram of trolamine while stirring the solution, keeping on stirring the solution at a temperature of 40 DEG C to react for 4 hours; adding 0.3 gram of trolamine and 15 grams of trichloroiminocyanuric acid into the solution, and keeping on stirring at 40 DEG C to react for 2 hours; removing solid from the reaction solution, washing the solution to neutrality by liquid, recovering organic solvent, distilling the obtained organic solvent by decompressing to 0.097MPa, and obtaining the fraction at boiling point of 102 DEG C, which is the final product. The method of the invention prepares the nonanal by the new process with high conversion rate, no pollution and easy industrial operation.

A refined edible chicken oil used in daily life relates to an odourlessness and flavourless axunge which gradually generates a specific flavor of chicken under the high temperature cooking and frying condition; but under the high temperature condition, the chicken oil generates oxidation and fail reactions which lead the chicken oil not to be eaten. The invention utilizes a high pressure liquid chromatography to analyze the main fragrant matter in the chicken oil - the content and proportion relation of each volatile carbonyl compound in the chicken oil and is added into the refined edible chicken oil, so as to lead the chicken oil to assume full chicken oil flavor. The fragrance of the full chicken oil is generated under 22.5meq / kg of carbonyl value, 3.0mgKOH / g of acid value and 4.9meq / kg of peroxide number. The main carbonyl compounds in the chicken oil comprises 2, 4-decadienal, 2-undenal, nonanal and 2-nonenal. The refined chicken oil can reappear the full chicken oil flavor when the fragrant matters of the 2, 4-decadienal (5.946mg / kg), the 2-undenal (3.532mg / kg), the nonanal (2.863mg / kg) and the 2-nonenal (1.301mg / kg) are added.

The invention provides a bee attractant, application thereof and a method for attracting bees to pollinate tomato flowers. The bee attractant is selected from one or more of nonanal, 1-ethyl-4-isopropylbenzene and 4-ethylbenzaldehyde. Compared with common aromatic substances or flower juices or syrups of different plants, the bee attractant provided by the invention has stronger specificity for tomatoes and bees. The bee attractant is for smell learning training of a bee pollination swarm, the flower visiting rate of bees can be effectively increased, the tomato yield is increased, meanwhile,the labor intensity is reduced, and other diseases and pests caused by attractant spraying are avoided.

The invention relates to whipped cream powder essence. The whipped cream powder essence comprises the following components in parts by weight: 0.1-0.3 part of butyric acid, 0.1-0.2 part of ethyl butyrate, 0.4-0.5 part of coconut aldehyde, 0.5-0.7 parts of gamma-unsecalactone, 1-1.5 parts of ethyl maltol, 0.03-0.06 part of nonanal, 0.05-0.1 part of methyl heptyl ketone, 0.1-0.15 part of diacetyl, 0.6-0.8 part of decanoic acid, 1-1.5 parts of delta-dodecalactone, 0.5-0.6 part of ethyl lactate, 0.3-0.4 part of lactic acid, 0.7-0.8 part of vanillin, 0.5-0.6 part of p gamma-decalactone, 0.03-0.05 part of propanol, 0.05-0.1 part of delta-nonalactone, 0.02-0.03 part of decanol, 0.3-0.4 part of dodecanoic acid, 0.5-2 parts of an anti-tackiness agent, and the balance of glucose, wherein the total part number is 100. The whole flavor balance of acid, ester, aldehyde, lactone and the like of the essence is taken into consideration seriously, so that the aroma of whipped cream can be more coordinated and perfect, the flavor is very rich, and the taste is smooth and delicious.

The invention discloses a sex pheromone synergist for noctuidae small insects. The synergist is a mixture composed of linalool, nonanal and beta ionone, wherein the ratio of the linalool to the nonanal to the beta ionone is 4.1:1.7:1. According to the chemotaxis difference of lepidoptera fruit-boring noctuidae insects, by means of the addition of the sex attractant synergistic component, the trapping effect is promoted, the field population density is reduced, the monitoring efficiency and the prevention and control effect are improved, and the yield and the quality of solanaceous vegetables and fruits are improved.

The invention discloses a bee bug repellent and application thereof. The apis cerana repellent is prepared from the following components in percentage by volume: 0.01 percent to 0.1 percent of capraldehyde, 0.01 percent to 0.1 percent of heptanal, 0.1 percent to 1 percent of nonanal, 0.1 percent to 1 percent of linalool and 97.8 percent to 99.78 percent of a solvent. Compared with the prior art, the decorus lividus repellent provided by the invention takes capraldehyde, heptanal, nonanal and linalool as repellent active ingredients, the active ingredients supplement each other, have a synergistic effect and have good oviposition and antifeedant repellent effects on decorus lividus, and the repellent rate of the decorus lividus reaches up to 95.43% + / -0.48% and is obviously higher than that of a single active ingredient. And the active components are all common natural plant components, are harmless to human bodies, are biodegradable, are environment-friendly, and are convenient and safe to use.

The invention relates to the field of fermentation, and discloses saccharomyces cerevisiae, a leavening agent, a preparation method of the leavening agent, application of the leavening agent in preparation of fermented food, and a beer preparation method, wherein the preservation number of the saccharomyces cerevisiae is CGMCC No.21162. According to the invention, the saccharomyces cerevisiae disclosed by the invention is strong in passage capacity, the 10-generation fermentation performance of beer is stable, and the autolysis rate of the saccharomyces cerevisiae does not exceed 5%; beer brewed by the saccharomyces cerevisiae is stable in flavor and low in content of undesirable flavor substances such as yeast flavor, diacetyl flavor and trans-2-nonanal and the like, and aging of the beer can be effectively delayed; and the saccharomyces cerevisiae can also be used for fermenting flour products.

The invention provides a method for testing young-citrus-fruit-originated volatile matters having effects on adult Bactrocera minax. According to the results of the testing method, the young-citrus-fruit-originated volatile matters including limonene, 4-terpene alcohol, nonanal and citral have behavioral reaction effects on adult Bactrocera minax; limonene, 4-terpene alcohol and citral all have effects on male citrus Bactrocera minax; and limonene and nonanal both have effects on female citrus Bactrocera minax. It is confirmed for the first time that the young-citrus-fruit-originated volatilematters having effects on male and female adults of Bactrocera minax include limonene, 4-terpene alcohol, nonanal and citral, and the young-citrus-fruit-originated volatile matters can be further applied to research and development of attractants and repellents and play a positive role in pollution-free prevention and treatment in citrus production areas.

The invention discloses a preparation method of an n-nonanal volatile gas sensitive material in the technical field of gas sensitive materials. The method comprises the following steps: (1) dissolving WCl6 in a methanol solvent, weighing RuCl3, and adding the RuCl3 into a mixed solvent while stirring; (2) transferring the mixed solution into a high-pressure reaction kettle, carrying out sealed reaction, naturally cooling, centrifuging, washing and drying to obtain a precursor; and (3) carrying out heat treatment on the precursor in an inert atmosphere to obtain the gas sensitive material. When the prepared gas sensitive material is used for detecting the volatile gas of the n-nonanal, the detection precision can be improved.

The invention discloses a synthesis method of Z9,11-dodecadienol acetate. The synthesis method comprises the following steps: (1) by taking 1,9-nonanediol as a raw material, performing unilateral oxidation to synthesize 9-hydroxyl-1-nonanal; (2) synthesizing an intermediate Z9,11-dodecadienol; (3) synthesizing the Z9,11-dodecadienol acetate. The synthesis method has the advantages of mild synthesis conditions, short reaction time, easy operation, wide application range, high yield, low cost and easy industrialization, the process flow is shortened, and three wastes are few. In a synthesis reaction of the 9-hydroxyl-1-nonanal, silica gel is added, the dispersion of PCC (Pyridinium Chlorochromate) is facilitated, the opportunity of oxidation of two hydroxyls is reduced by adding the PCC in batches, the reaction is performed at room temperature, and energy is saved; after the reaction is completed, ethyl ether and water are added for extraction, and the yield of reactants is improved. In the synthesis process of the Z9,11-dodecadienol, a phase transfer catalyst 18-crown ether-6 and non-polar solvent benzene are adopted to react so as to obtain a cis-product; meanwhile, weak alkali potassium carbonate is adopted, so that the protection of the hydroxyls of the 9-hydroxyl-1-nonanal is avoided, and a reaction synthesis route is shortened.

The invention relates to a dendrobium officinale flower fragrance composition, a preparation method and application thereof, and relates to the technical field of daily chemicals. According to the main technical scheme, the dendrobium officinale flower fragrance composition is prepared from a fragrance compound and a solvent auxiliary material, wherein the fragrance compound is prepared from 1-octylene-3-alcohol, hexanal, nonanal, phenylacetaldehyde, octanal and linalool, and in the dendrobium officinale flower fragrance composition, the concentration of the 1-octylene-3-alcohol is 9.9 mg / L to 12.4 mg / L, the concentration of the hexanal is 26.7 mg / L to 31.5 mg / L, the concentration of the nonanal is 3.8 mg / L to 4.2 mg / L, the concentration of the phenylacetaldehyde is 18.8 mg / L to 20.6 mg / L, the concentration of the octanal is 1.2 mg / L to 1.4 mg / L, and the concentration of the linalool is 7.2 mg / L to 8.4 mg / L. The invention is mainly used for providing and preparing the dendrobium officinale flower fragrance composition. The dendrobium officinale flower fragrance composition has the natural fragrance characteristic of dendrobium officinale flowers. The dendrobium officinale flower fragrance composition is used for preparing daily chemicals such as spices, essences, cosmetics, perfume, detergents and the like so as to endow the daily chemicals with the dendrobium officinale flower fragrance characteristic.

The invention relates to the field of daily use chemicals, and particularly discloses daily use chemical essence with fruit fragrance and a preparation method thereof. The daily use chemical essence is prepared from an organic solvent, peach aldehyde, nonanal, myricetin and methyl cedryl ether. The preparation method comprises the following steps: mixing the organic solvent, peach aldehyde, nonanal, myricetin aldehyde and methyl cedrol, and stirring for 30-40 minutes under the conditions that the temperature is 25-35 DEG C and the rotating speed is 80-100 r / min, thereby obtaining the daily chemical essence with fruit fragrance. The daily use chemical essence with the fruit fragrance has the advantage of being low in sensitization rate; in addition, the preparation method disclosed by the invention has the advantage that the fragrance sensitization rate is lower.

The invention belongs to the technical field of green pesticide synthesis, and discloses a novel method for synthesizing (9Z, 12E)-9,12-tetradecadien-1-ol acetate. According to the method, malonic acid and 9-bromo-1-nonyl alcohol are used as two starting raw materials. The method comprises the following steps: carrying out a Knoevenagel condensation reaction on malonic acid and propionaldehyde inthe presence of piperidine acetate to generate (E)-3-pentenoic acid, then carrying out lithium aluminum hydride reduction to obtain (E)-3-penten-1-ol, carrying out bromination reaction, and refluxingwith triphenylphosphine in acetonitrile to obtain (E)-3-pentenyltriphenylphosphine bromide; carrying out a PCC oxidation reaction on 9-bromo-1-nonanol to obtain 9-bromononanal, and then reacting the 9-bromononanal with potassium acetate to obtain 9-acetoxynonanal; and finally, carrying out a Wittig reaction on (E)-3-pentenyltriphenylphosphine bromide and 9-acetoxynonanal so as to obtain (9Z, 12E)-9,12-tetradecadien-1-ol acetate. An E-type double bond is constructed by utilizing the Knoevenagel condensation reaction of malonic acid and propionaldehyde, and the method has the advantages of mildreaction conditions, environmental friendliness, simple synthetic route and the like.

The invention discloses a tableware cleaning agent and a preparation method thereof, wherein the tableware cleaning agent comprises the following components in parts by weight: 110-150 parts of an ethanol aqueous solution, 60-90 parts of octyl aldehyde, 75-105 parts of pelargonic aldehyde, 20-50 parts of 2,6-3-naphthalenedicarboxylic acid, 35-55 parts of paratoluenesulfonic acid sodium salt, 15-55 parts of laurate dihydroxyethylamide, 40-70 parts of methyl sulfate, 20-40 parts of diisopropylbenzene hydroperoxide and 5-15 parts of an anionic surfactant. The preparation method comprises the following steps: uniformly mixing ethanol aqueous solution, octyl aldehyde, pelargonic aldehyde, 2,6-3-naphthalenedicarboxylic acid and paratoluenesulfonic acid sodium salt, and then sequentially adding laurate dihydroxyethylamide, methyl sulfate, diisopropylbenzene hydroperoxide and the anionic surfactant, and then uniformly mixing again, so as to obtain the tableware cleaning agent. The tableware cleaning agent prepared by adopting the preparation method provided by the invention can more easily remove stains.

The invention belongs to the technical field of food analysis, and particularly relates to a method for evaluating freshness of sturgeons based on aldehyde and ketone volatile substances. Researches find that the contents of octanal, heptanal, nonanal and acetophenone in the sturgeon meat are in linear correlation with the storage time, detection of the contents is beneficial to rapid evaluation of the quality of the sturgeon meat under the refrigeration condition, and the sturgeon meat can be used as a potential biomarker for characterization of the freshness of commercially available cold fresh sturgeons. Meanwhile, the astringent taste of the fish meat can be covered by the epsilon-PL treatment and the oxidation electrolyzed water treatment to a certain extent. In the aspects of salty taste and delicate taste, epsilon-PL treatment has a certain enhancement effect on the delicate taste and the salty taste of the sturgeon meat, and epsilon-PL treatment has small influence on the flavor of the fresh sturgeon meat.

The invention discloses a synthesis method of Z9,11-dodecadienol acetate. The synthesis method comprises the following steps: (1) by taking 1,9-nonanediol as a raw material, performing unilateral oxidation to synthesize 9-hydroxyl-1-nonanal; (2) synthesizing an intermediate Z9,11-dodecadienol; (3) synthesizing the Z9,11-dodecadienol acetate. The synthesis method has the advantages of mild synthesis conditions, short reaction time, easy operation, wide application range, high yield, low cost and easy industrialization, the process flow is shortened, and three wastes are few. In a synthesis reaction of the 9-hydroxyl-1-nonanal, silica gel is added, the dispersion of PCC (Pyridinium Chlorochromate) is facilitated, the opportunity of oxidation of two hydroxyls is reduced by adding the PCC in batches, the reaction is performed at room temperature, and energy is saved; after the reaction is completed, ethyl ether and water are added for extraction, and the yield of reactants is improved. In the synthesis process of the Z9,11-dodecadienol, a phase transfer catalyst 18-crown ether-6 and non-polar solvent benzene are adopted to react so as to obtain a cis-product; meanwhile, weak alkali potassium carbonate is adopted, so that the protection of the hydroxyls of the 9-hydroxyl-1-nonanal is avoided, and a reaction synthesis route is shortened.

The invention belongs to the technical field of slim cigarette filter stick production, and specifically relates to lemon essence for an incense thread in a slim filter stick and an application of thelemon essence. The lemon essence is composed of the following components including, by mass, 10.0 to 15.0% of lemon oil, 2.0 to 5.0% of geranialdehyde, 0.05 to 0.1% of octanal, 0.05 to 0.1% of pelargonaldehyde, 0.05 to 0.1% of capric aldehyde, 0.2 to 0.5% of linalool, 0.1 to 0.2% of terpilenol and 79.0 to 87.55% of caprin. The lemon essence for a incense thread in a slim filter stick and with a special incense flavor is provided, and a slim cigarette filter stick structure is improved, so the smoking effect of the slim cigarette can be improved; the improvement effect is obvious; and when cigarette types are enriched, great meaning is provided for demonstration, application and promotion of new slim cigarette design, development and production as well as sale.

A mosquito attractant composition is described comprising heptanal, octanal, nonanal, (E)-2-octenal and (E)-2-decenal. More particularly a composition wherein the compounds are present in the following proportions: nonanal 1.00, octanal 0.32±0.16, heptanal 0.06±0.03, (E)-2-octenal 0.04±0.02 and (E)-2-decenal 0.13±0.065.

The invention relates to red ginseng essence. The red ginseng essence is prepared from the following components: 2-acetylpyrazine, methyl cyclopentenolone, maltol, ethyl vanillin, edible alcohol, propylene glycol, acetic acid, ethyl acetate, butanol, acetaldehyde diethylacetal, ethyl butyrate, ethyl lactate, furfural, leaf alcohol, 2-acetylfuran, 0.07 kg of ethyl acetoacetate, 5-methylfurfural, 2-ethyl-3-methylpyrazine, benzyl alcohol, 2,3,5,6-tetramethylpyrazine, nonanal, 2-methoxy-3-(1-methylpropyl)pyrazine, [gamma]-octanoic lactone, 5-hydroxyethyl-4-methylthiazole, eugenol, ascabiol and a red ginseng extract. According to the red ginseng essence, a formula is formulated according to inherent aroma compounds in natural red ginseng, spice with high affinity to the red ginseng and naturalequivalent components is selected as a raw material, and the red ginseng extract is added to blend the red ginseng essence, so that the flavor of final products of foods and beverages can be effectively enhanced.

Provided is a lemon juice-containing beverage which gives a fresh sensation typical of lemon regardless of its low fruit juice content. One ppb or more of at least one phenylpropene selected from the group consisting of safrole, methyleugenol, and myristicin is incorporated in a lemon juice-containing beverage having a fruit juice content of not less than 1% and not more than 30% and comprising at least one aroma component selected from the group consisting of linalool, nonanal, and decanal.

Flavor compositions which reduce or prevent dental cavities based on the use of flavor materials found to inhibit the production of acid by micro-organisms in the oral cavity, e.g. lactic acid production from glucose by Streptococcus mutans. The compositions include at least two flavor materials from group (a) and at least one flavor material from group (b). Representative group (a) flavors are decanol, nonanol and cinnamic aldehyde while typical group (b) flavors are nonanal, citral and peppermint oil of material origin.

The invention discloses a red juice orange essence, a preparation method and an application thereof. The raw material for preparing the red juice orange essence is prepared from sweet orange oil, citronellyl acetate, allyl acetate, terpilenol, neryl acetate, nonanal, linalyl acetate and propionic acid with mass percent concentration of 10%, leaf alcohol with mass percent concentration of 1% and propylene glycol in certain mass percent. According to the preparation method, the red juice orange essence is obtained by mixing all the raw materials for preparation and then uniformly stirring. The raw materials for preparing the aroma of the red juice orange essence are conveniently taken; the characteristic aroma of red juice oranges is mellow and full and smells strongly natural; after the redjuice orange essence is added as a food additive into beverages, pastries, fruit wine, and the like, the products have natural red juice orange fragrance and taste.

The invention discloses Chinese chestnut essence stir-fried with sugar and a preparation method of the Chinese chestnut essence stir-fried with sugar. The invention relates to a formaldehyde-free flame retardant which comprises nonanal, furfural, benzaldehyde, 5-methyl-2-furaldehyde, 1H-pyrrole-2-formaldehyde, 5-hydroxymethylfurfural, (E)-3-pentene-2-ketone, 1-hydroxy-2-acetone, 1-methyl-2-pyrrolidone, 5-methyl-2 (5H)-furanone, 3-methyl-2 (5H)-furanone, 1-(1H-pyrrole-2-yl)-ethanone, ethyl maltol, methyl maltol and 3-methyl-phenol. The invention discloses a Chinese chestnut essence which is prepared from the following raw materials: 2-methoxy-4-vinylphenol, 2, 4-bis (1, 1-dimethylethyl)-phenol, benzyl alcohol, 2-phenoxy-ethanol, 4-methyl-5-thiazoleethanol, 4 '-diethylaminoacetanilide, vanillin, fenugreek lactone, 2-acetylpyrazine, 2, 6-dimethylpyrazine, edible ethanol and the like. The Chinese chestnut essence has strong Chinese chestnut fragrance, is soft and harmonious, and has lasting fragrance.