Fragrance essence, preparation method thereof and vehicle-mounted fragrance

Abstract

The invention relates to the technical field of spices, and discloses a fragrant essence, a preparation method thereof and a vehicle-mounted fragrance. In the components of the fragrance essence, through the mutual synergistic effect of 4-cyclohexyl-4-methylpentane-2-ketone, cis-2-(1, 1-dimethylethyl) cyclohexanol acetate, o-tert-butyl cyclohexyl acetate, tricyclodecenyl propionate, tricyclodecenyl acetate, 3A, 4, 5, 6, 7, 7A-hexahydro-4, 7-methylene-1H-indanol propionate, citral and eucalyptus oil, the fragrance essence has the advantages that the fragrance is enhanced, the fragrance effect is enhanced, and the fragrance quality is improved. The layering sense of fragrance release is increased, the sensitive degree to olfactory stimulation is improved, and the refreshing effect is improved. In addition, the vehicle-mounted fragrance prepared based on the fragrance essence disclosed by the invention has an obvious function of relieving driving fatigue, and meanwhile, the effects of multiple effects and enhancement of continuous effects are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of fragrances, and in particular to a fragrance essence and a preparation method thereof, and a vehicle-mounted fragrance. Background Art

[0002] At present, effective fatigue intervention for drivers is needed. In the prior art, many drivers have the habit of using fragrances in the car. Different fragrances can bring different olfactory feelings. Although there are many types of existing car fragrances, they are basically used to freshen the air and increase the fragrance in the car, but do not have the effect of relieving fatigue. Therefore, how to stimulate the user's sense of smell through fragrance, and then relieve fatigue to a certain extent, has become a problem that needs to be solved urgently. Summary of the invention

[0003] In view of the problem that in-vehicle fragrances in the prior art usually do not have the effect of relieving fatigue, the present invention provides a fragrance essence and a preparation method thereof, and a vehicle fragrance.

[0004] In a first aspect, the present invention provides a fragrance essence, comprising a solvent, an aroma fragrance, and a functional fragrance for relieving fatigue, wherein the functional fragrance comprises 4-cyclohexyl-4-methylpentane-2-one, cis-2-(1,1-dimethylethyl) cyclohexanol acetate, o-tert-butyl cyclohexyl acetate, tricyclodecenyl propionate, tricyclodecenyl acetate, 3A,4,5,6,7,7A-hexahydro-4,7-methylene-1H-indanol propionate, citral and eucalyptus oil.

[0005] In a second aspect, the present invention provides a method for preparing the fragrance essence of the first aspect, comprising:

[0006] The components of the solvent, the aroma fragrance and the functional fragrance are mixed and stirred evenly to obtain the aroma fragrance with the function of relieving fatigue.

[0007] In a third aspect, the present invention provides a car fragrance, wherein the car fragrance comprises the fragrance essence of the first aspect.

[0008] In the fragrance essence and preparation method thereof, and the car fragrance provided by the present invention, each component of the fragrance essence has a refreshing effect. In order to avoid drug resistance over time when used alone, 4-cyclohexyl-4-methylpentane-2-one, cis-2-(1,1-dimethylethyl) cyclohexanol acetate, o-tert-butyl cyclohexyl acetate, tricyclodecenyl propionate, tricyclodecenyl acetate, 3A, 4,5,6,7,7A-hexahydro-4,7-methylene-1H-indanol propionate, citral and eucalyptus oil are synergistically combined to increase the sense of hierarchy of fragrance release, improve the sensitivity to olfactory stimulation, and further improve the refreshing effect. The car fragrance made based on the fragrance essence of the present invention has a significant function of relieving driving fatigue, and can also enhance its sustained effect. DETAILED DESCRIPTION

[0009] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0010] In the first aspect, an embodiment of the present invention discloses a fragrance essence, comprising a solvent, an aroma fragrance, and a functional fragrance for relieving fatigue, wherein the functional fragrance comprises 4-cyclohexyl-4-methylpentane-2-one, cis-2-(1,1-dimethylethyl) cyclohexanol acetate, o-tert-butyl cyclohexyl acetate, tricyclodecenyl propionate, tricyclodecenyl acetate, 3A,4,5,6,7,7A-hexahydro-4,7-methylene-1H-indanol propionate, citral and eucalyptus oil.

[0011] Furthermore, essence is a mixture of various spices, and each spice in the essence plays a different role in the overall aroma of the essence. Some are the main aroma, some play a role in coordinating the main aroma, some play a role in modifying the main aroma, and some play a role in slowing down the volatilization rate of volatile spice components.

[0012] Among them, 4-cyclohexyl-4-methylpentane-2-one, cis-2-(1,1-dimethylethyl) cyclohexanol acetate, o-tert-butyl cyclohexyl acetate, tricyclodecenyl propionate, tricyclodecenyl acetate, 3A,4,5,6,7,7A-hexahydro-4,7-methylene-1H-indenol propionate, citral and eucalyptus oil are all aromatic and can stimulate the nervous system, increase alertness and attention, thereby playing a refreshing role and relieving driving fatigue.

[0013] Among them, citral is naturally present in lemongrass oil, lemon oil, white lime oil, citrus oil, litsea cubeba oil and clove basil oil, and can be obtained by distillation and separation from natural essential oils. Citral can also be prepared by chemical synthesis, for example, based on the synthesis of methyl heptenone, 3,7-dimethylocten-6-ene-1-yn-3-ol is prepared from methyl heptenone and acetylene, and then, under the conditions of polymerized silicon sulfone catalyst and 140-150°C temperature, 3,7-dimethylocten-6-ene-1-yn-3-ol is directly rearranged in an inert solvent to obtain citral. Citral has a strong lemony aroma and can improve alertness and attention. Eucalyptus oil can be distilled and separated from eucalyptus leaves, and its main chemical components are terpenoid compounds and their oxygen-containing derivatives. Eucalyptus oil has a strong taste of eucalyptol or citronellal, showing a special cool aroma and irritating cool medicinal smell, which can stimulate the cerebral cortex and improve alertness and attention. O-tert-butyl cyclohexyl acetate has a fresh citrus fruity aroma of bergamot and white lemon, accompanied by a woody note of pine and cypress. Tricyclodecenyl propionate has a woody floral aroma, accompanied by the aroma of jasmine and fennel. Tricyclodecenyl acetate has a strong and lasting fresh and woody aroma. 4-cyclohexyl-4-methylpentane-2-one has a spicy and irritating aroma. These components all have a certain irritating aroma, and cis-2-(1,1-dimethylethyl) cyclohexanol acetate and 3A,4,5,6,7,7A-hexahydro-4,7-methylene-1H-indanol propionate also have a stimulating aroma, so they all have the function of refreshing the mind and relieving fatigue.

[0014] In addition, pharmacological experiments have shown that eucalyptus oil has a mild stimulating effect on the nasal and bronchial mucosa. As a gas inhalant, it can promote mucus secretion, help clear blocked nasal and bronchi, improve respiratory function, and enhance sensitivity to olfactory stimulation. The volatility of various fragrance components is also different. For example, citral evaporates relatively quickly, while eucalyptus oil evaporates relatively slowly, thus forming different levels of aroma.

[0015] In this embodiment, on the basis that various flavor components themselves have the function of refreshing the mind, there is a synergistic effect between eucalyptus oil and 4-cyclohexyl-4-methylpentane-2-one, cis-2-(1,1-dimethylethyl) cyclohexanol acetate, o-tert-butyl cyclohexyl acetate, tricyclodecenyl propionate, tricyclodecenyl acetate, 3A,4,5,6,7,7A-hexahydro-4,7-methylene-1H-indanol propionate, and citral, which increases the richness and layering of the aroma while enhancing the effects of refreshing the mind and relieving fatigue, and effectively improves the mental state.

[0016] In one embodiment, the mass percentages of the components in the functional fragrance include:

[0017] 4-Cyclohexyl-4-methylpentane-2-one: 5% to 10%;

[0018] Cis-2-(1,1-dimethylethyl)cyclohexanol acetate: 3% to 5%;

[0019] o-tert-Butyl cyclohexyl acetate: 3% to 5%;

[0020] Tricyclodecenyl propionate: 1% to 2%;

[0021] Tricyclodecenyl acetate: 0.1% to 0.5%;

[0022] 3A,4,5,6,7,7A-hexahydro-4,7-methylene-1H-indanol propionate: 1% to 2%;

[0023] Citral: 0.5%~1%;

[0024] Eucalyptus oil: 0.5%~1%.

[0025] Furthermore, when the aroma of the fragrance component is irritating, excessive use may cause the body to develop drug resistance, and only appropriate use can play the best role. Especially when multiple fragrance components are used together, attention must be paid to the coordination between different components to avoid negative effects on the body. In one embodiment, the functional fragrance is composed of 5% to 10% 4-cyclohexyl-4-methylpentane-2-one, 3% to 5% cis-2-(1,1-dimethylethyl) cyclohexanol acetate, 3% to 5% o-tert-butyl cyclohexyl acetate, 1% to 2% tricyclodecenyl propionate, 0.1% to 0.5% tricyclodecenyl acetate, 1% to 2% 3A, 4, 5, 6, 7, 7A-hexahydro-4, 7-methylene-1H-indanol propionate, 0.5% to 1% citral and 0.5% to 1% eucalyptus oil according to mass fraction.

[0026] In this embodiment, a plurality of fragrance components are used in combination according to a certain proportion, thereby reducing the irritation of the fragrance and achieving a stronger and more lasting refreshing effect with a smaller amount of fragrance components.

[0027] In one embodiment, the aroma fragrance includes blood cedar oil, cedarwood, terpineol and galaxol.

[0028] In one embodiment, the mass percentages of the components in the aroma fragrance include:

[0029] Blood cypress oil: 5% to 10%;

[0030] Cinnamomum camphor: 1% to 2%;

[0031] Terpineol: 1% to 2%;

[0032] Galaxan: 0.1%~0.5%.

[0033] Further, blood cedarwood oil is a natural essential oil with a strong aromatic flavor, with a warm and sweet smell in the typical cedarwood fragrance, and the fragrance is long-lasting.Cedrela is an extract of Cupressaceae plants, with a weak woody and creamy smell, and its persistence is very strong.Pinyl alcohol is a natural compound, and the isomers of pineol are respectively called α-pineol, β-pineol and γ-pineol. Pinyl alcohol is a mixture based on α-pineol, with a pine and clove-like fragrance. Galaxan is a synthetic fragrance that can be obtained by a variety of synthetic routes. Galaxan has a strong musky fragrance, accompanied by a woody fragrance, and has strong penetration and diffusion power, and has a long-lasting fragrance and good stability.Cedarwood fragrance, pinewood fragrance and musk fragrance can also stimulate the cerebral cortex, improve alertness and attention. Therefore, blood cedarwood oil, cedrela, pineol and galaxan can also play a refreshing effect to a certain extent while providing fragrance.

[0034] Since blood cedar oil, cedarwood, terpineol and galaxol have certain refreshing effects, they also need to be used reasonably. In one embodiment, the aroma fragrance includes 5% to 10% blood cedar oil, 1% to 2% cedarwood, 1% to 2% terpineol and 0.1% to 0.5% galaxol by mass fraction. Through the cooperation of a large proportion of natural compounds and a small proportion of synthetic compounds, the intensity of the irritating odor is reduced while ensuring the lasting fragrance.

[0035] This embodiment achieves the effects of combining fragrance and refreshing by using a specific proportion of cedarwood oil, cedarwood brain, terpineol and galaxol.

[0036] In one embodiment, the aroma fragrance further comprises benzyl alcohol, methyl dihydrojasmonate, linalool, diethyl malonate, cedryl acetate and benzyl acetate.

[0037] In one embodiment, the mass percentages of the components in the aroma fragrance include:

[0038] Benzyl alcohol: 3% to 5%;

[0039] Methyl dihydrojasmonate: 1% to 2%;

[0040] Linalool: 1% to 2%;

[0041] Diethyl malonate: 0.5%~1%;

[0042] Cedryl acetate: 0.1% to 0.5%;

[0043] Benzyl acetate: 0.1%~0.5%.

[0044] Further, benzyl alcohol, methyl dihydrojasmonate, linalool, diethyl malonate, cedryl acetate, and benzyl acetate have different aroma characteristics and volatility and are used to provide aroma.

[0045] Among them, benzyl alcohol has a light honey-sweet aroma, which is extremely weak and almost odorless. Benzyl acetate has a strong jasmine aroma with a fruity note. In fragrance essential oils, benzyl alcohol can be used as a harmonizer together with benzyl acetate. Harmonizers are also called synergists, and their main function is to harmonize the smell of the main fragrance to make the overall fragrance harmonious. Methyl dihydrojasmonate has an elegant jasmine aroma and a fresh and soft lemon fruit aroma, and the aroma is permeable and long-lasting. Linalool has a lily of the valley aroma, similar to lavender, accompanied by the aroma of citrus. In fragrance essences, a large amount of linalool can be added as the main aroma, or a small amount of linalool can be added as a modifier. Modifiers are also called modifiers, and their function is to modify and sublimate other aromas, change the overall style, and add some special smell effects. Although the modifier is used in a small amount in the component formula, it is very effective. For example, high-grade aliphatic aldehydes are used as modifiers to highlight the strong aldehyde aroma and enhance the diffusion performance of the fragrance. Diethyl malonate has a slight sweet ester and fruity aroma. Cedarwood acetate has a strong woody aroma accompanied by a leather aroma, and the aroma is long-lasting and stable.

[0046] In one embodiment, the aroma fragrance also includes 3% to 5% benzyl alcohol, 1% to 2% methyl dihydrojasmonate, 1% to 2% linalool, 0.5% to 1% diethyl malonate, 0.1% to 0.5% cedar acetate and 0.1% to 0.5% benzyl acetate in terms of mass fraction. The richness and layering of the aroma are increased through the mutual coordination between different fragrance components.

[0047] In one embodiment, the solvent includes dipropylene glycol methyl ether. Further, the mass percentage of dipropylene glycol methyl ether is 50% to 70%.

[0048] Understandably, the solvent of the flavor refers to the flavor and fragrance solvent, which is an organic solvent that can dissolve the flavor and fragrance. The solvent can dissolve the components of the flavor and fragrance in the liquid phase, and make the components cooperate with each other to form a flavor with a strong fragrance and lasting release. The solvent includes at least one of diethylene glycol butyl ether, dipropylene glycol methyl ether and propylene glycol, preferably dipropylene glycol methyl ether. In one embodiment, 50% to 70% of dipropylene glycol methyl ether is added as a solvent. In addition to being a solvent, dipropylene glycol methyl ether is also used as a fixative. The fixative improves the fragrance of the entire flavor by changing the vapor pressure, viscosity, relative molecular mass, solubility and molecular attraction of the flavor. Due to the addition of the fixative, the molecular electrostatic attraction and hydrogen bonding between the flavor components are changed, which reduces the vapor pressure of the flavor and slows down the evaporation rate, thereby achieving the purpose of lasting fragrance.

[0049] In this embodiment, dipropylene glycol methyl ether is used as a solvent and a fixative to dissolve various flavor components of the flavor and at the same time prolong the volatilization time of each flavor component in the flavor, so that the aroma of the flavor is stable and lasting.

[0050] In a second aspect, an embodiment of the present invention further discloses a method for preparing the fragrance essence of the first aspect, comprising:

[0051] The components of the solvent, the aroma fragrance and the functional fragrance are mixed and stirred evenly to obtain the aroma fragrance with the function of relieving fatigue.

[0052] Further, in one embodiment, when preparing the fragrance essence, 50% to 70% of dipropylene glycol methyl ether, 5% to 10% of 4-cyclohexyl-4-methylpentane-2-one, 3% to 5% of cis-2-(1,1-dimethylethyl) cyclohexanol acetate, 3% to 5% of o-tert-butyl cyclohexyl acetate, 1% to 2% of tricyclodecenyl propionate, 0.1% to 0.5% of tricyclodecenyl acetate, 1% to 2% of 3A,4,5,6,7,7A-hexahydro-4,7-methylene-1H-indene propionate, 0.5% to 1% of citral, 0.5% to 1% of eucalyptus oil, 5% to 10% of cedarwood oil, 1% to 2% of cedarwood brain, 1% to 2% of pine alcohol, 0.1% to 0.5% of galaxol, 3% to 5% of benzyl alcohol, 1% to 2% of methyl dihydrojasmonate, 1% to 2% of linalool, 0.5% to 1% of diethyl malonate, 0.1% to 0.5% of cedarwood acetate and 0.1% to 0.5% of benzyl acetate, etc., and then the components are mixed and stirred evenly to obtain a fragrance essence with the function of relieving fatigue.

[0053] In a third aspect, an embodiment of the present invention further discloses a vehicle-mounted fragrance, comprising the fragrance essence of the first aspect.

[0054] Furthermore, between essence and fragrance, essence is a substance with a higher concentration of fragrance, which can be regarded as one of the raw materials for making fragrance, and can also be used to make perfume and added to daily necessities. Fragrance is a substance with a lower concentration of fragrance, which can be obtained by diluting essence in a specific proportion (such as 10%, 50% or 100%), or by mixing essence with other substances to make the fragrance softer.

[0055] The car fragrance made of fragrance essence with fatigue relief function is applied in the car space, which helps to relieve the driver's driving fatigue. The aroma of the fragrance is constantly changing. The top, middle and base notes of the fragrance are based on the different volatilization speeds of different components, thus creating a sense of layering of the fragrance in time. For the sense of smell of the drivers and passengers in the car, the top note is the first smell of the car fragrance. When the top note dissipates, the middle note will stand out. The smell after the middle note evaporates is the base note. Based on the volatilization of each component of the car fragrance, an associative natural scene atmosphere is created. Among them, the top notes include the aroma of pine, herbs, lemon, eucalyptus, apple, fruit, aldehyde, wormwood, pepper and green leaves, the middle notes include the aroma of cloves, jasmine and geranium, and the base notes include the aroma of wood, cedar, vetiver, musk, amber and patchouli. The in-car fragrance of this embodiment combines scenting and refreshing the mind through the synergistic effect of multiple fragrance components, guiding the driver and passengers to have the exciting feeling of walking in a fresh forest and feeling different scenes of nature.

[0056] Specific examples and comparative examples are as follows:

[0057] Example 1

[0058] Weigh 50% of dipropylene glycol methyl ether, 10% of 4-cyclohexyl-4-methylpentane-2-one, 5% of cis-2-(1,1-dimethylethyl)cyclohexanol acetate, 5% of o-tert-butylcyclohexyl acetate, 2% of tricyclodecenyl propionate, 0.5% of tricyclodecenyl acetate, and 2% of 3A,4,5,6,7,7A-hexahydro-4,7-methylene-1H-indene propionic acid according to mass percentage. ester, 1% citral, 1% eucalyptus oil, 10% cedarwood oil, 2% cedarwood, 2% pineol, 0.5% galaxol, 5% benzyl alcohol, 1% methyl dihydrojasmonate, 1% linalool, 1% diethyl malonate, 0.5% cedarwood acetate and 0.5% benzyl acetate, and then mix and stir the components to obtain a fragrance essence with fatigue relief function. The fragrance essence is directly used as a car fragrance and is marked as Example 1.

[0059] Example 2

[0060] According to the mass percentage, 60% of dipropylene glycol methyl ether, 8% of 4-cyclohexyl-4-methylpentane-2-one, 4% of cis-2-(1,1-dimethylethyl)cyclohexanol acetate, 4% of o-tert-butyl cyclohexyl acetate, 1.5% of tricyclodecenyl propionate, 0.4% of tricyclodecenyl acetate, 1.5% of 3A,4,5,6,7,7A-hexahydro-4,7-methylene-1H-indanol propionate, 0.8 % of citral, 0.8% of eucalyptus oil, 8% of cedarwood oil, 1.5% of cedarwood, 1.5% of pine alcohol, 0.5% of galaxol, 3% of benzyl alcohol, 1.5% of methyl dihydrojasmonate, 1.5% of linalool, 0.9% of diethyl malonate, 0.3% of cedarwood acetate and 0.3% of benzyl acetate, and then the components are mixed and stirred evenly to obtain a fragrance essence with fatigue relief function. The fragrance essence is directly used as a car fragrance and is marked as Example 2.

[0061] Example 3

[0062] According to the mass percentage, 70% of dipropylene glycol methyl ether, 5% of 4-cyclohexyl-4-methylpentane-2-one, 3% of cis-2-(1,1-dimethylethyl)cyclohexanol acetate, 3% of o-tert-butyl cyclohexyl acetate, 1% of tricyclodecenyl propionate, 0.1% of tricyclodecenyl acetate, 1% of 3A,4,5,6,7,7A-hexahydro-4,7-methylene-1H-indene propionate, 0.1% of tricyclodecenyl acetate and 0.1% of tricyclodecenyl propionate were weighed. 0.5% citral, 0.5% eucalyptus oil, 5% cedarwood oil, 1% cedarwood, 1% pine alcohol, 0.1% galaxol, 5% benzyl alcohol, 1% methyl dihydrojasmonate, 2% linalool, 0.6% diethyl malonate, 0.1% cedarwood acetate and 0.1% benzyl acetate, and then mix and stir the components to obtain a fragrance essence with fatigue relief function. The fragrance essence is directly used as a car fragrance and is marked as Example 3.

[0063] Comparative Example 1

[0064] According to the mass percentage, 75.5% of dipropylene glycol methyl ether, 1% of citral, 10% of cedarwood oil, 2% of cedarwood, 2% of pine alcohol, 0.5% of galaxol, 5% of benzyl alcohol, 1% of methyl dihydrojasmonate, 1% of linalool, 1% of diethyl malonate, 0.5% of cedarwood acetate and 0.5% of benzyl acetate were weighed, and then the components were mixed and stirred evenly to obtain a fragrance essence with fatigue relief function. The fragrance essence was directly used as a car fragrance and marked as Comparative Example 1.

[0065] Blank example

[0066] 100% water was used as the car fragrance and marked as a blank case.

[0067] The car fragrances in the embodiments, comparative examples and blank examples were tested, and the test results are shown in Table 1.

[0068] The test subjects were all car owners with more than one year of driving experience. There were 48 people, with an even distribution of age between 20-30, 30-40, and 40-50 years old, and gender distribution of 1 / 3 female and 2 / 3 male. The test subjects had no history of olfactory damage or loss of smell, no respiratory, mental or chronic diseases, and no history of taking anti-anxiety and antidepressant drugs.

[0069] The person being tested enters the driver's seat of the same car and uses the corresponding scent strips of the embodiment, comparative example and blank example to test the product. Each scent is tested 3 times, each time for 3-5 seconds, with an interval of more than 15 seconds. The test is divided into subjective test and objective test.

[0070] The objective test uses an electroencephalogram (EEG) device, which can capture changes in brain activity at different frequencies through electrodes. The number of electrodes in the EEG device is 20, which is used to monitor the test taker's preference, arousal and excitement for the aroma.

[0071] The subjective test was conducted in the form of a short questionnaire, which included questions about aroma preference, intensity, and degree of delayed fatigue relief. The results were calculated after the test takers completed the short questionnaire.

[0072] Table 1 Product test results of embodiments, comparative examples and blank examples

[0073]

[0074] It can be seen from the product test results in Table 1 that the results of the embodiment in both subjective and objective tests are better than those of the comparative example. Among them, the excitement level of each age group in the objective test reaches above 0.3, and the fatigue relief degree of each age group in the subjective test is significantly stronger than that of the comparative example, indicating that the fragrance essence and car fragrance of the present invention have a significant refreshing effect and help relieve driving fatigue.

[0075] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fragrance essence, It is characterized in that The invention comprises solvents, aroma spices and functional spices for relieving fatigue, wherein the functional spices comprise 4-cyclohexyl-4-methylpentane-2-one, cis-2-(1,1-dimethylethyl)cyclohexanol acetate, o-tert-butyl cyclohexyl acetate, tricyclodecenyl propionate, tricyclodecenyl acetate, 3A,4,5,6,7,7A-hexahydro-4,7-methylene-1H-indanol propionate, citral and eucalyptus oil.

2. The fragrance essence according to claim 1, It is characterized in that The mass percentages of the components in the functional fragrance include: 4-Cyclohexyl-4-methylpentane-2-one: 5% to 10%; Cis-2-(1,1-dimethylethyl)cyclohexanol acetate: 3% to 5%; o-tert-Butyl cyclohexyl acetate: 3% to 5%; Tricyclodecenyl propionate: 1% to 2%; Tricyclodecenyl acetate: 0.1% to 0.5%; 3A,4,5,6,7,7A-hexahydro-4,7-methylene-1H-indanol propionate: 1% to 2%; Citral: 0.5%~1%; Eucalyptus oil: 0.5%~1%.

3. The fragrance essence according to claim 2, It is characterized in that The aroma fragrance includes blood cedar oil, cedarwood, terpineol and galaxol.

4. The fragrance essence according to claim 3, It is characterized in that The mass percentages of the components in the aroma fragrance include: Blood cypress oil: 5% to 10%; Cinnamomum camphor: 1% to 2%; Terpineol: 1% to 2%; Galaxan: 0.1%~0.5%.

5. The fragrance essence according to claim 4, It is characterized in that The aroma fragrance also includes benzyl alcohol, methyl dihydrojasmonate, linalool, diethyl malonate, cedryl acetate and benzyl acetate.

6. The fragrance essence according to claim 5, It is characterized in that The mass percentages of the components in the aroma fragrance include: Benzyl alcohol: 3% to 5%; Methyl dihydrojasmonate: 1% to 2%; Linalool: 1% to 2%; Diethyl malonate: 0.5%~1%; Cedryl acetate: 0.1% to 0.5%; Benzyl acetate: 0.1%~0.5%.

7. The fragrance essence according to claim 6, It is characterized in that The solvent includes dipropylene glycol methyl ether.

8. The fragrance essence according to claim 7, It is characterized in that The mass percentage of dipropylene glycol methyl ether is 50% to 70%.

9. A method for preparing a fragrance essence as claimed in any one of claims 1 to 8, It is characterized in that include: The components of the solvent, the aroma fragrance and the functional fragrance are mixed and stirred evenly to obtain the aroma fragrance with the function of relieving fatigue.

10. A car fragrance, It is characterized in that The invention comprises the fragrance essence as described in any one of claims 1 to 8.

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