Anti-carsickness fragrance essential oil composition as well as preparation method and application thereof

Abstract

The invention discloses an anti-carsickness fragrant essential oil composition as well as a preparation method and application thereof. The essential oil composition is prepared from the following components in parts by mass: 10 parts of ginger essential oil, 25 parts of peppermint essential oil, 10 parts of citronella oil, 5 parts of bergamot oil and 50 parts of white lemon oil. Systematized aroma evaluation and in-vehicle function test prove that the essential oil composition can immediately relieve the carsickness symptom, has beautiful aroma, is natural and harmonious, has the functions of relieving emotion and refreshing, and provides a non-drug alternative scheme for the carsickness symptom; the composition has the characteristics of being natural, safe and long-acting and slow-release, and is especially suitable for sensitive people such as children and pregnant women. The essential oil composition disclosed by the invention is suitable for preparing a vehicle-mounted fragrance diffusion system, a personal smearing preparation and the like.

Description

Technical Field

[0001] The present invention belongs to the technical field of functional fragrances, and in particular relates to an anti-motion sickness fragrance essential oil composition, a preparation method and an application thereof. Background Art

[0002] As people's living standards improve, the demand for travel increases. Many people suffer from motion sickness during travel, and current treatments for motion sickness have significant flaws. Existing anti-motion sickness medications, such as antihistamines and scopolamine patches, can relieve symptoms, but they are accompanied by side effects such as drowsiness and dry mouth, and they take a long time to take effect, making them difficult to treat in the event of sudden motion sickness. Single essential oils commonly used for anti-motion sickness also have the problem of insufficient efficacy. For example, ginger and peppermint essential oils can relieve some symptoms, but the onset of action is as long as 8-10 minutes, and the aroma coordination is poor, which can easily cause headaches. On the other hand, odors in the car, such as gasoline and volatile organic compounds in the interior, can also affect the autonomic nervous system by stimulating the olfactory system, reducing the body's tolerance to bumps and thus aggravating motion sickness reactions. Therefore, it is of great significance to develop a fragrance essential oil that has both anti-motion sickness and deodorizing functions. Summary of the Invention

[0003] To address the above-mentioned deficiencies in the prior art, the present invention aims to provide a pure natural anti-motion sickness fragrance essential oil composition that can alleviate motion sickness and alleviate unpleasant odors in vehicles, as well as its preparation method and application. The anti-motion sickness fragrance essential oil composition prepared by the present invention has a beautiful, natural, and harmonious aroma that can quickly and effectively alleviate motion sickness symptoms.

[0004] The anti-motion sickness fragrance essential oil composition of the present invention is a motion sickness prevention solution that synergistically regulates the vestibular nerves, emotional centers, and autonomic nervous system through a combination of specific essential oils. It is used to alleviate motion sickness symptoms and is naturally safe, with a long-lasting sustained release. Experiments have shown that this essential oil composition can instantly relieve motion sickness symptoms, both soothing and refreshing, providing a non-drug alternative for motion sickness.

[0005] The anti-motion sickness fragrance essential oil composition of this invention, by integrating aromatherapy with air purification technology, fills the market gap for functional in-vehicle fragrances. It meets consumers' dual needs for healthy travel and comfortable experiences, and has promising applications, particularly in long-distance travel and new energy vehicle applications. Using natural essential oils as a carrier, the composition works through both olfactory and transdermal absorption pathways, making it suitable for in-vehicle fragrance diffusion systems (volatile type) and personal application preparations (roller-on / spray-on type).

[0006] The first object of the present invention is to provide an anti-motion sickness fragrance essential oil composition, which is an essential oil composition A or an essential oil composition B. The essential oil composition A is composed, by mass, of 10 parts of ginger essential oil, 25 parts of peppermint essential oil, 10 parts of citronella oil, 5 parts of bergamot oil, and 50 parts of white lime oil; the essential oil composition B is composed, by mass, of 40 parts of peppermint essential oil, 10 parts of ginger essential oil, 10 parts of white lime oil, 10 parts of cinnamon essential oil, and 30 parts of sweet orange oil.

[0007] A second object of the present invention is to provide a method for preparing an anti-motion sickness fragrance essential oil composition, comprising the following steps: Weigh 10 parts of ginger essential oil, 25 parts of peppermint essential oil, 10 parts of citronella oil, 5 parts of bergamot oil and 50 parts of white lime oil in a container according to their mass, stir and mix them evenly to obtain an essential oil composition.

[0008] Preferably, the ginger essential oil is prepared by the following method: washing the ginger rhizome, drying it, and crushing it; adding an appropriate amount of water to a distillation kettle; reflux distilling at 100° C., condensing at 20° C.; collecting the upper oily liquid; and dehydrating it with a neutral desiccant to obtain the ginger essential oil; The peppermint essential oil is prepared by the following method: crushing whole peppermint, adding an appropriate amount of 70% by volume ethanol aqueous solution and peppermint powder and stirring evenly, extracting by supercritical carbon dioxide extraction at an extraction temperature of 35°C, a pressure of 25 MPa, and a flow rate of 18 kg / h, extracting for 3 hours, and separating in a separation kettle to obtain the peppermint essential oil; The citronella oil is prepared by the following method: taking fresh citronella, chopping and then grinding, adding an appropriate amount of water in a distillation kettle, reflux distilling at 100°C, condensing at 20°C, collecting the upper oily liquid, and dehydrating with a neutral desiccant to obtain citronella oil; The bergamot oil is prepared by the following method: taking mature bergamot peel, washing it and cutting it into pieces of 1 to 2 cm³, soaking the peel pieces in an appropriate amount of water for 15 minutes, and squeezing them using a centrifugal press at a pressing temperature of ≤25°C for 40 minutes. The oil-water mixture is centrifuged and separated, and the upper layer is the bergamot oil stock solution, which is collected and dehydrated with a neutral desiccant to obtain the bergamot oil. The white lemon oil is prepared by the following method: taking ripe white lemon peel, washing it, chopping it, and drying it; adding an appropriate amount of water to a distillation kettle; reflux distilling it at 100° C., with a condensation temperature of 20° C.; collecting the upper oily liquid; and dehydrating it with a neutral desiccant to obtain the white lemon oil.

[0009] A third object of the present invention is to provide another method for preparing an anti-motion sickness fragrance essential oil composition, comprising the following steps: Weigh 40 parts of peppermint essential oil, 10 parts of ginger essential oil, 10 parts of white lemon oil, 10 parts of cinnamon essential oil and 30 parts of sweet orange oil in a container by mass, stir and mix evenly to obtain an essential oil composition.

[0010] Preferably, the peppermint essential oil is prepared by the following method: crushing the whole peppermint plant, adding an appropriate amount of 70% by volume ethanol aqueous solution and the peppermint powder and stirring evenly, extracting using supercritical carbon dioxide extraction at an extraction temperature of 35°C, a pressure of 25 MPa, and a flow rate of 18 kg / h, extracting for 3 hours, and then separating in a separation kettle to obtain the peppermint essential oil; The ginger essential oil is prepared by the following method: washing ginger rhizomes, drying and crushing them, adding an appropriate amount of water to a distillation kettle, reflux distilling at 100° C., condensing at 20° C., collecting the upper oily liquid, and dehydrating with a neutral desiccant to obtain the ginger essential oil; The white lemon oil is prepared by the following method: taking ripe white lemon peel, washing it, chopping it, and drying it, adding an appropriate amount of water to a distillation kettle, reflux distilling it at 100°C, and condensing it at 20°C, collecting the upper oily liquid, and dehydrating it with a neutral desiccant to obtain the white lemon oil; The cinnamon essential oil is prepared by the following method: fresh cinnamon bark is washed, freeze-dried, and crushed, an appropriate amount of water is added to a container, and pre-treated with an ultrasonic cell disruptor for 75 minutes at an ultrasonic power of 1500 W, a frequency of 20 to 25 kHz, and a temperature of ≤30°C. The bark is then placed in a distillation kettle, refluxed and distilled at 100°C, with a condensation temperature of 20°C, and the upper layer of oily liquid is collected and dehydrated with a neutral desiccant to obtain the cinnamon essential oil. The sweet orange oil is prepared by the following method: fresh sweet orange peel is taken, washed and cut into pieces of 1 to 2 cm³, the peel pieces are soaked in an appropriate amount of water for 15 minutes, and squeezed using a centrifugal press at a squeezing temperature of ≤25°C for 40 minutes. The oil-water mixture is centrifuged to separate layers, and the upper layer is the sweet orange oil stock solution. After collection, the upper layer is dehydrated with a neutral desiccant and then left to stand at -15°C for 20 days to remove wax, thereby obtaining the sweet orange oil.

[0011] A fourth object of the present invention is to provide an in-vehicle aroma diffusion system comprising the anti-motion sickness aroma essential oil composition.

[0012] Preferably, the anti-motion sickness fragrance essential oil composition is dissolved in sweet almond oil or jojoba oil, or dispersed in an aqueous emulsion or alcohol system, or encapsulated in functional microcapsules, particles, powders or beads made of proteins, polysaccharides or synthetic polymer materials (such as polyurethane, ethyl cellulose, etc.), or formed into a semi-solid preparation such as a gel or paste, or adsorbed on a solid adsorption carrier.

[0013] A fifth object of the present invention is to provide a personal care preparation containing the anti-motion sickness fragrance essential oil composition.

[0014] Preferably, the personal care preparation is a spreadable preparation or a sprayable preparation.

[0015] A sixth object of the present invention is to provide a use of the anti-motion sickness fragrance essential oil composition in preventing motion sickness and / or improving the odor in a car.

[0016] The seventh object of the present invention is to provide a method for enhancing the anti-motion sickness effect of in-car aromatherapy, by adding the anti-motion sickness fragrance essential oil composition into the in-car aromatherapy.

[0017] Compared with the prior art, the present invention has the following beneficial effects: This invention provides a pure, natural anti-motion sickness fragrance essential oil composition. Based on the principles of phytopharmacology, different plant essential oils are compounded to synergistically enhance their anti-motion sickness efficacy. Existing anti-motion sickness essential oils often rely on a single ingredient (such as mint or ginger) or simple combinations. This invention, however, utilizes a scientifically formulated blend of multiple essential oils to achieve a synergistic effect, significantly enhancing the anti-motion sickness effect and providing immediate relief.

[0018] The essential oil formula of this invention can be dissolved in a variety of base oils (such as sweet almond oil and jojoba oil), dispersed in aqueous emulsions and alcohol systems, or adsorbed onto other carriers. It is suitable for various uses, including in-car aromatherapy, personal application, and sprays, broadening the product's applicability. Furthermore, the pure plant-based formula avoids chemically synthesized ingredients, making it safer and particularly suitable for sensitive individuals such as children and pregnant women.

[0019] Furthermore, existing products often focus on functionality while neglecting the aroma experience. This invention utilizes essential oil blending technology to adjust the aroma structure, resulting in a product that offers a multifaceted experience of refreshing the mind, relieving stress, and pleasing the senses. Existing anti-motion sickness essential oils often rely on empirical blending. This invention establishes a scientific evaluation system through systematic aroma evaluation and in-vehicle functional testing, ensuring both product effectiveness and an optimized user experience. DETAILED DESCRIPTION

[0020] The following examples are provided to further illustrate the present invention, but are not intended to limit the present invention.

[0021] The preparation method of essential oil used in the following examples is as follows: (1) Preparation method of ginger essential oil: Wash and dry the ginger rhizome, grind it with a grinder to a particle size of ≤1 mm and a water content of ≤12%, add 4 times the mass of water (solid-liquid ratio 1:4) into a distillation kettle, reflux distill at 100°C, condense at 20°C, collect the upper oily liquid until no oil droplets are produced, and dehydrate and purify it with anhydrous sodium sulfate to obtain ginger essential oil.

[0022] (2) Preparation method of peppermint essential oil: The whole mint plant (excluding the roots) was crushed, and 10 times the mass of a 70% ethanol aqueous solution was added to the mint powder and stirred evenly. The mixture was placed in a supercritical extraction kettle and extracted using supercritical carbon dioxide extraction at a temperature of 35°C, a pressure of 25 MPa, and a flow rate of 18 kg / h. After extraction for 3 h, the mint essential oil was separated using a separation kettle.

[0023] (3) Preparation method of perilla essential oil: Take perilla leaves, wash them with clean water, and then dry them to a moisture content of ≤5%. After crushing, pass them through a 40-mesh sieve, add 10 times the mass of 70% ethanol aqueous solution and perilla powder and stir evenly, place them in a supercritical extraction kettle, and use supercritical carbon dioxide extraction method for extraction. The extraction temperature is 40℃, the pressure is 30 MPa, and the flow rate is 25 kg / h. After extraction for 3 hours, separate them in a separation kettle to obtain perilla essential oil.

[0024] (4) Preparation method of bergamot essential oil: Take the peel of ripe bergamot (green or yellow), remove the pulp and any remaining pulp, and cut into 1-2 cm³ pieces. Soak the peel pieces in distilled water for 15 minutes to soften the oil sacs and prevent damage during mechanical pressing. Use a centrifugal press for pressing, using a peel-to-water ratio of 1:5, a pressing temperature ≤ 25°C, and a pressing time of 40 minutes. The oil-water mixture is centrifuged (6000 rpm, 10 minutes) to separate the layers. The upper layer, containing the bergamot essential oil stock, is collected and dehydrated with anhydrous sodium sulfate to obtain the bergamot essential oil.

[0025] (5) Preparation method of white lemon oil: Take ripe white lemon ( Citrus aurantifolia ) peel, remove the pulp and pulp residue, wash and chop into particles ≤5 mm, and dry to a moisture content ≤10%; add 10 times the mass of water (material-liquid ratio 1:10) to the distillation kettle, reflux distillation at 100℃, condensation temperature 20℃, collect the upper oily liquid until no oil droplets are produced, and dehydrate and purify with anhydrous sodium sulfate to obtain white lemon oil.

[0026] (6) Preparation method of bergamot oil: Take ripe bergamot ( Citrus bergamia ) peel, remove the pulp and any remaining pulp, wash, and cut into 1-2 cm³ pieces. Soak the peel pieces in distilled water for 15 minutes to soften the oil sacs and prevent damage during mechanical pressing. Press using a centrifugal press, using a peel-to-water ratio of 1:5, a pressing temperature ≤ 25°C, and a pressing time of 40 minutes. The oil-water mixture is centrifuged (6000 rpm, 10 minutes) to separate the layers. The upper layer, the bergamot oil concentrate, is collected and dehydrated with anhydrous sodium sulfate to obtain bergamot oil.

[0027] (7) Preparation method of citronella oil: Take fresh lemongrass (excluding roots), chop it into 2-5 cm segments, crush it and pass it through a 20-mesh sieve, add 10 times the weight of water (solid-liquid ratio 1:10) in a distillation kettle, reflux distill at 100°C, condense at 20°C, collect the upper oily liquid until no oil droplets are produced, and dehydrate and purify it with anhydrous sodium sulfate to obtain citronella oil.

[0028] (8) Preparation method of sweet orange oil: Fresh sweet orange peels were taken, the pulp and pulp residue removed, and then washed and cut into 1-2 cm³ pieces. The peel pieces were soaked in distilled water for 15 minutes to soften the oil sacs and prevent damage during mechanical pressing. The peel pieces were pressed using a centrifugal press with a peel-to-water ratio of 1:5, a pressing temperature of ≤25°C, and a pressing time of 40 minutes. The oil-water mixture was centrifuged (6000 rpm, 10 minutes) to separate the layers. The upper layer, the sweet orange oil concentrate, was collected and dehydrated with anhydrous sodium sulfate for purification. The orange oil was then left to stand at -15°C for 20 days to remove the wax.

[0029] (9) Preparation method of cinnamon essential oil: Fresh cinnamon bark was washed, freeze-dried, crushed, and passed through a 120-mesh sieve. Five times the mass of water (solid-liquid ratio 1:5) was added to a container and pretreated with an ultrasonic cell disruptor for 75 min (power: 1500 W, frequency 20-25 kHz, temperature ≤30°C). The bark was then placed in a distillation kettle and refluxed at 100°C with a condensation temperature of 20°C. The upper oily liquid was collected until no oil droplets were produced and then dehydrated and refined with anhydrous sodium sulfate to obtain cinnamon essential oil.

[0030] Example 1 The following essential oils were accurately weighed according to the mass ratio: 30% ginger essential oil, 20% peppermint essential oil, 10% perilla essential oil, 25% bergamot essential oil, and 15% lemon oil in a container. The mixture was thoroughly stirred and mixed at 25°C using an overhead stirrer to prepare an essential oil composition for subsequent aroma evaluation and anti-dizziness function evaluation.

[0031] In this recipe, the warming, spicy flavor of ginger and the cooling effect of mint create a balance, alleviating nausea and dizziness. Perilla enhances gastrointestinal regulation and suppresses vestibular nerve disorders. The citrus aroma enhances freshness, the tartness of lemon neutralizes the pungency of ginger, and bergamot stabilizes mood.

[0032] Example 2 The following essential oils were accurately weighed in a container according to mass ratio: 10% ginger essential oil, 25% peppermint essential oil, 10% citronella oil, 5% bergamot oil, and 50% lime oil. The mixture was thoroughly stirred and mixed at 25°C using an overhead stirrer to prepare an essential oil composition for subsequent aroma and anti-dizziness evaluation.

[0033] In this example, lemongrass freshens the air and enhances mental alertness, suppressing the stuffy feeling associated with motion sickness. The tart, refreshing aroma of lemon essential oil suppresses the gag reflex, while the mild aroma of white lime reduces irritation. The citrus aroma enhances overall well-being, while the floral fragrance of bergamot and the refreshing notes of white lime create a multi-dimensional olfactory experience.

[0034] Example 3 The following essential oils were accurately weighed according to the mass ratio: 20% peppermint essential oil, 25% bergamot essential oil, 25% bergamot oil, and 30% perilla essential oil in a container and thoroughly stirred and mixed at 25°C using an overhead stirrer to prepare an essential oil composition for subsequent aroma evaluation and anti-dizziness function evaluation.

[0035] In this example, the cooling effects of mint and bergamot, combined with the citrus aroma, synergize to invigorate and alleviate dizziness. Bergamot enhances anti-nausea effects, while its volatile components stabilize inner ear balance. Perilla adds a herbal aroma, harmonizing the overall scent.

[0036] Example 4 The following essential oils were accurately weighed according to mass ratio: 40% peppermint essential oil, 10% ginger essential oil, 10% lime oil, 10% cinnamon essential oil, and 30% sweet orange oil. The mixture was thoroughly stirred and mixed at 25°C using an overhead stirrer to prepare an essential oil composition for subsequent aroma and anti-dizziness evaluation.

[0037] In this embodiment, lemon and ginger relieve nausea, mint refreshes the mind, cinnamon warms the body, and orange regulates mood. The balance of sweetness, warmth, and coolness avoids single stimulation and enhances user comfort.

[0038] Example 5 The following essential oils were accurately weighed in a container according to their mass ratio: 25% perilla oil, 20% ginger oil, 20% sweet orange oil, 10% citronella oil, and 25% lime oil. The mixture was thoroughly stirred and mixed at 25°C using an overhead stirrer to prepare an essential oil composition for subsequent aroma and anti-dizziness evaluation.

[0039] In this example, ginger and perilla warm the stomach and stop vomiting, the sourness of citrus neutralizes the pungency of ginger, and citric acid enhances the anti-nausea effect. Lemongrass freshens the air and regulates respiratory system pressure.

[0040] Example 6 The following essential oils were accurately weighed in a container according to mass ratio: 15% ginger essential oil, 20% peppermint essential oil, 10% citronella oil, 30% lime oil, and 25% sweet orange oil. The mixture was thoroughly stirred and mixed at 25°C using an overhead stirrer to prepare an essential oil composition for subsequent aroma and anti-dizziness evaluation.

[0041] In this embodiment, ginger and white lemon can effectively prevent gastrointestinal rhythm disorders and suppress vomiting reflexes, mint can relieve dizziness and fatigue, lemongrass can purify the air in the car and suppress stuffiness and discomfort, and sweet orange essential oil can relieve anxiety and enhance overall pleasure.

[0042] Example 7: Effect Evaluation 1. Aroma evaluation experiment The aroma of the essential oil compositions prepared in Examples 1-6 was evaluated by 10 professional sensory evaluators who independently scored the compositions. The average score was taken and scored on a scale of 1 to 5 based on the three dimensions of aroma freshness, aroma harmony, and aroma acceptability. The scoring results are shown in Table 1.

[0043] Table 1 Sensory evaluation table of 5 compositions 2. Evaluation of anti-dizziness function The anti-motion sickness function of the essential oil compositions of Example 2 and Example 4, which had higher aroma evaluation scores, was evaluated to test the effect of the fragrance essential oil compositions on alleviating the degree of motion sickness.

[0044] Subjects: First, participants were screened using the Motion Sickness Susceptibility Questionnaire (MSSQ). The MSSQ is typically divided into two sections, covering childhood and adulthood, and records the frequency of participants' use of public transportation or specific facilities (such as cars, boats, and pirate ships), as well as the severity of associated nausea and vomiting. This data was quantified to calculate a motion sickness sensitivity index (SSI) to assess individual susceptibility. MSSQ scores were collected from over 700 automotive customers. Those with a total MSSQ score of ≥19.3 (≥75th percentile) were defined as those susceptible to motion sickness. Six participants, P01-P06, were randomly selected from this susceptible group as participants. See Table 2 for their individual information.

[0045] Table 2 Subject information Three groups, A, B, and C, were set up (Table 3). A was a blank group (no fragrance in the car), B was group 1 with fragrance (the essential oil composition of Example 4) turned on in the car, and C was group 2 with fragrance (the essential oil composition of Example 2) turned on in the car.

[0046] Table 3 Arrangement of experimental rounds for subjects Note: P01-P06: the first to sixth personnel; R1, R2, R3: the first, second and third rounds of testing.

[0047] Test Method: Subjects sit in designated seats (back row or front passenger seat) according to seating assignments. Each test is conducted with one tester. The vehicle runs 6-10 laps (2 minutes per lap, see Table 4) around the Dongfeng Nissan proving grounds, lasting 12-20 minutes. The tester scores the subject using the MISC chart (see Table 5), recording the score once every minute. The test terminates when the MISC score reaches 7 or higher.

[0048] Evaluation indicators: Fragrance activation time: When the in-car evaluation subjects reported MISC>4, the fragrance was immediately activated.

[0049] Average duration of MISC≤7: The average duration of MISC≤7 in the car of 6 subjects was calculated. Countermeasure Effect 1 Minute After Using the Fragrance: If a subject reports a MISC score > 4, record the MISC score (before fragrance application). Immediately activate the fragrance and score the MISC score (after fragrance application) 1 minute later. Countermeasure Improvement Effect = [MISC score (before fragrance application) - MISC score (after fragrance application)] / MISC score (before fragrance application), taking the average across all subjects.

[0050] Table 4 Site parameters Table 5 MISC Scale (Pain Level Scale) Evaluation Results: Tables 6 and 7 show that the essential oil composition of Example 2 is most effective in alleviating motion sickness, with the effect being even greater for passengers in the rear seat than for the front passenger. Using the essential oil composition of Example 2 as a fragrance extended the duration of MSIC ≤ 7 for passengers in the rear seat by 5.3 minutes compared to the control group. The severity of motion sickness was reduced by 14% after one minute of using the fragrance, significantly outperforming the essential oil composition of Example 4. This demonstrates that the essential oil composition of Example 2 can effectively and immediately alleviate motion sickness.

[0051] Table 6 Results of motion sickness alleviation effect Table 7 Comparison of motion sickness alleviation effects

Claims

1. An anti-motion sickness fragrance essential oil composition, characterized in that, The essential oil composition A or the essential oil composition B is composed, by mass, of 10 parts of ginger essential oil, 25 parts of peppermint essential oil, 10 parts of citronella oil, 5 parts of bergamot oil, and 50 parts of white lime oil; and the essential oil composition B is composed, by mass, of 40 parts of peppermint essential oil, 10 parts of ginger essential oil, 10 parts of white lime oil, 10 parts of cinnamon essential oil, and 30 parts of sweet orange oil.

2. A method for preparing an anti-motion sickness fragrance essential oil composition, characterized in that: The following steps are involved: Weigh 10 parts of ginger essential oil, 25 parts of peppermint essential oil, 10 parts of citronella oil, 5 parts of bergamot oil and 50 parts of white lime oil in a container according to their mass, stir and mix them evenly to obtain an essential oil composition.

3. The method according to claim 2, wherein The ginger essential oil is prepared by the following method: washing the ginger rhizome, drying and crushing it, adding an appropriate amount of water to a distillation kettle, reflux distilling at 100°C, condensing at 20°C, collecting the upper oily liquid, dehydrating with a neutral desiccant to obtain the ginger essential oil; the peppermint essential oil is prepared by the following method: crushing the whole peppermint herb, adding an appropriate amount of 70% ethanol aqueous solution and peppermint powder and stirring evenly, extracting by supercritical carbon dioxide extraction at an extraction temperature of 35°C, a pressure of 25 MPa, a flow rate of 18 kg / h, extracting for 3 hours, and separating in a separation kettle to obtain the peppermint essential oil; the citronella oil is prepared by the following method: taking fresh citronella, chopping it and crushing it, adding an appropriate amount of water to a distillation kettle, reflux distilling at 100°C, condensing at 20°C, collecting the upper oily liquid, dehydrating with a neutral desiccant to obtain the citronella oil; the bergamot oil is prepared by the following method: taking mature bergamot peel, washing it, cutting it into pieces of 1-2 cm³, soaking the peel pieces in an appropriate amount of water for 15 min, using a centrifugal press for pressing, the pressing temperature is ≤25°C, the pressing time is: 40 min, the oil-water mixture is centrifuged and separated, the upper layer is the bergamot oil liquid, and the upper layer is collected and dehydrated with a neutral desiccant to obtain bergamot oil; the white lemon oil is prepared by the following method: taking mature white lemon peel, washing it, chopping it, and drying it, adding an appropriate amount of water to a distillation kettle, reflux distilling it at 100°C, and the condensing temperature is 20°C, collecting the upper layer of oily liquid, and dehydrating it with a neutral desiccant to obtain white lemon oil.

4. A method for preparing an anti-motion sickness fragrance essential oil composition, characterized in that: The following steps are involved: Weigh 40 parts of peppermint essential oil, 10 parts of ginger essential oil, 10 parts of white lemon oil, 10 parts of cinnamon essential oil and 30 parts of sweet orange oil in a container by mass, stir and mix evenly to obtain an essential oil composition.

5. The method according to claim 4, wherein The peppermint essential oil is prepared by the following method: crushing the whole peppermint plant, adding an appropriate amount of 70% ethanol aqueous solution and peppermint powder and stirring evenly, extracting by supercritical carbon dioxide extraction at an extraction temperature of 35°C, a pressure of 25 MPa, a flow rate of 18 kg / h, and extracting for 3 h and then separated by a separation kettle to obtain mint essential oil; the ginger essential oil is prepared by the following method: washing the ginger rhizome, drying and crushing it, adding an appropriate amount of water to a distillation kettle, reflux distilling at 100°C, condensing at 20°C, collecting the upper oily liquid, and dehydrating it with a neutral desiccant to obtain ginger essential oil; the white lemon oil is prepared by the following method: taking ripe white lemon peel, washing, chopping and drying it, adding an appropriate amount of water to a distillation kettle, reflux distilling at 100°C, condensing at 20°C, collecting the upper oily liquid, and dehydrating it with a neutral desiccant to obtain white lemon oil; the cinnamon essential oil is prepared by the following method: taking fresh cinnamon bark, washing it, freeze-drying it, crushing it, adding an appropriate amount of water to a container, and pre-treating it with an ultrasonic cell disruptor for 75 minutes, with an ultrasonic power of 1500 W and a frequency of 20-25 kHz, temperature ≤30°C, then placed in a distillation kettle, reflux distilled at 100°C, condensed at 20°C, the upper oily liquid was collected, and dehydrated with a neutral desiccant to obtain cinnamon essential oil; the sweet orange oil is prepared by the following method: fresh sweet orange peel is taken, washed and cut into pieces of 1 to 2 cm³, the peel pieces are soaked in an appropriate amount of water for 15 minutes, and squeezed using a centrifugal press at a squeezing temperature of ≤25°C and a squeezing time of 40 minutes. The oil-water mixture is centrifuged to separate layers, the upper layer is the sweet orange oil stock solution, which is collected and dehydrated with a neutral desiccant, and then allowed to stand at -15°C for 20 days to remove wax, thereby obtaining the sweet orange oil.

6. A vehicle-mounted fragrance diffusion system, characterized in that: Contains the anti-motion sickness fragrance essential oil composition according to claim 1.

7. The vehicle-mounted aroma diffusion system according to claim 6, characterized in that: The anti-motion sickness fragrance essential oil composition is dissolved in sweet almond oil or jojoba oil, or dispersed in a water emulsion or alcohol system, or encapsulated in functional microcapsules, particles, powders or popping beads made of protein, polysaccharide or synthetic polymer materials, or made into a semi-solid preparation using a gel or paste, or adsorbed on a solid adsorption carrier.

8. A personal care formulation, characterized in that Contains the anti-motion sickness fragrance essential oil composition according to claim 1.

9. Use of the anti-motion sickness fragrance essential oil composition according to claim 1 in preventing motion sickness and / or improving the odor in a car.

10. A method for enhancing the anti-motion sickness effect of in-vehicle aromatherapy, characterized in that: Add the anti-motion sickness fragrance essential oil composition according to claim 1 into the car aromatherapy.

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