Plant extract wormwood oil for body oil bath and preparation process thereof

Abstract

The invention belongs to the technical field of health-care products, particularly relates to plant extract wormwood oil for body oil bath and a preparation process thereof, and provides a safe and efficient solution through compounding of natural plant essential oil and low-temperature process innovation. The prunus amygdalus dunn oil and the simmondsia chinensis seed oil are used as mild substrates, and cooperate with the lavender oil, the blumea oil and the rose essential oil to form a double-effect synergistic system for soothing nerves and dredging collaterals; the completeness of plant active molecules is reserved to the maximum extent through gradient mixing and light-shielding curing procedures, an anti-oxidation barrier is constructed by means of natural tocopherol, and the product stability is prolonged. The technical effects comprise that the lavender oil and the rose essential oil calm the nervous centralis, relieve anxiety mood and realize synchronous regulation of mind and body; the simmondsia chinensis seed oil bionic sebum structure promotes zero-burden permeation, and the prunus amygdalus dulcis oil forms a protective film to reduce scraping injury and improve the universality of sensitive skin.

Description

Technical Field

[0001] This invention relates to the field of health care product technology, and more specifically, to a plant-extracted mugwort oil for body oil baths and its preparation process. Background Technology

[0002] Body oil baths, a form of health care that combines aromatherapy with traditional Chinese medicine's external treatment principles, promote deep skin nourishment, accelerate local blood circulation, and help soothe emotions by adding plant essential oils to warm water. Currently, most mainstream products on the market rely on mineral oil or synthetic esters as base carriers. While these materials provide basic lubrication, their poor biocompatibility makes it difficult to fully release the potential efficacy of plant active ingredients. More importantly, many formulations introduce large amounts of chemical emulsifiers or solvents to improve the solubility and stability of essential oils, leading to skin sensitivity reactions during actual use and limiting their potential application in a wide range of people.

[0003] Current technologies also face the dual challenges of limited efficacy and process adaptability. On the one hand, common oil bath products focus too much on single plant active ingredients (such as relying solely on mugwort oil), neglecting the synergistic effect of blended essential oils, thus failing to achieve the ideal effect of simultaneous physical and mental regulation. On the other hand, during extraction and formulation, traditional distillation or mixing processes are easily affected by factors such as high temperature and oxidation, causing degradation of active substances or instability in the oil-water system, which not only reduces the utilization rate of ingredients but also affects the smoothness of the user experience. These shortcomings collectively restrict the innovation and upgrading of oil bath products.

[0004] Therefore, the industry urgently needs to develop a new type of plant-based oil bath formula, the core of which lies in using a natural and mild base oil and a multifunctional essential oil blending system, combined with advanced extraction and stabilization processes, to solve the problems of irritation, limited efficacy and process bottlenecks. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this application is to provide a plant-extracted mugwort oil for body oil baths and its preparation process. By employing a natural and mild base oil and a multifunctional essential oil blending system, combined with advanced extraction and stabilization processes, the application aims to solve the problems of irritation, limited efficacy, and process bottlenecks.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A plant-extracted artemisia oil for body oil baths, comprising the following components by weight percentage: Artemisia argyi oil 12-30%, Jojoba seed oil 8-25%, Base oil 40-70%, Functional essential oils 3-15%, Antioxidant 0.3-1.5%.

[0007] Furthermore, the base oil is selected from at least one of the following: sweet almond oil, camellia seed oil, and grape seed oil, and the amount added is 45-60%.

[0008] Furthermore, the functional essential oils include lavender oil and rose essential oil, with lavender oil accounting for 2-8% of the total and rose essential oil accounting for 1-7% of the total.

[0009] Furthermore, the antioxidant is natural tocopherol, and the addition amount is 0.5-1.2%.

[0010] Furthermore, it also includes 0.2-0.8% frankincense oil.

[0011] Furthermore, it includes the following components by mass percentage: Artemisia argyi oil 15-25%, Jojoba seed oil 10-20%, Sweet almond oil 45-55% 3-6% lavender oil Rose essential oil 2-5%, Natural tocopherol 0.5-1%.

[0012] Furthermore, it includes the following components by weight percentage: 20% Artemisia argyi oil, 15% Jojoba seed oil, 50% sweet almond oil, 5% lavender oil, 3.5% rose essential oil, 0.8% natural tocopherol, and 0.7% frankincense oil.

[0013] A process for preparing artemisia oil extracted from plants for body oil baths, comprising the following steps: (1) Preparation of Artemisia argyi oil: The dried Artemisia argyi is pulverized to 80-120 mesh and extracted by steam distillation. The mass-volume ratio of Artemisia argyi to water is 1:5-10. The distillate is collected and separated to obtain Artemisia argyi oil. (2) Base oil pretreatment: Mix sweet almond oil and jojoba seed oil at 40-50℃ and stir for 20-40 minutes; (3) Gradient mixing: Add artemisia oil, lavender oil, rose essential oil, natural tocopherol and frankincense oil in sequence while stirring continuously, with an interval of 10 minutes between each addition; (4) Aging treatment: After the mixture is filtered through a 200-mesh filter membrane, it is left to stand in the dark for 24-48 hours.

[0014] Furthermore, during the distillation in step (1), sodium chloride is added at a concentration of 0.1-0.5% of the total water volume.

[0015] Furthermore, in step (3), the mixing temperature is controlled at 35-45℃ and the stirring speed is 200-400rpm.

[0016] The present invention has the following beneficial effects: This invention achieves a synergistic effect by combining the warming and dispersing properties of Artemisia argyi oil with the deep penetration capabilities of Jojoba seed oil, significantly improving both blood circulation efficiency and mood regulation. Simultaneously, optimized low-temperature distillation and gradient mixing processes maximize the preservation of active ingredients during extraction and formulation. Combined with a natural tocopherol antioxidant system and specific emulsification technology, the essential oils are stably dispersed in hydrothermal environments, preventing oil-water separation. Finally, the all-natural, hypoallergenic formula completely avoids the risks of chemical solvent irritation, providing a highly effective, long-lasting, and burden-free immersive oil bath solution for sensitive skin. Detailed Implementation

[0017] The technical solution of the present invention will be further described below with reference to the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention. Unless otherwise specified, the methods or operations used in the embodiments are conventional methods or operations in the art.

[0018] This application provides a general and / or specific description of the materials and experimental methods used in the experiments. In the following examples, unless otherwise specified, % represents wt%, i.e., weight percentage. Reagents or instruments used, unless otherwise specified, are all commercially available conventional reagent products.

[0019] Example 1 A plant-extracted mugwort oil for body oil baths, comprising the following components by weight percentage: 14g mugwort oil, 10g jojoba seed oil, 65g sweet almond oil, 3g lavender oil, 2g rose essential oil, 0.4g natural tocopherol, 0.6g frankincense oil, and 5g lecithin.

[0020] The preparation process of the above-mentioned plant-extracted mugwort oil for body oil baths includes the following steps: (1) Preparation of Artemisia argyi oil: Dried Artemisia argyi leaves are finely pulverized to 80-120 mesh to form a uniform powder, thereby increasing the extraction surface area. The pulverized leaves are then placed into a distillation apparatus, and water is added at a ratio of 1:8 (Artemisia argyi mass to water volume). An additional 0.5% sodium chloride is added to the water volume to enhance the extraction efficiency of the essential oil. Distillation is carried out at 100℃ under a gentle boiling state for 2-5 hours until the distillate is completely clear. After completion, the mixture is allowed to stand for 1-2 hours using an oil-water separator, and the upper layer of pale yellow Artemisia argyi oil is collected, ensuring that the final water content does not exceed 0.1%. This step significantly improves the yield of active ingredients such as eucalyptol through the ionic effect of sodium chloride, while avoiding the risk of high-temperature degradation.

[0021] (2) Base oil pretreatment: Sweet almond oil and jojoba seed oil were placed in a temperature-controlled stirred reactor. The mixing process was strictly controlled in a water bath environment of 40-50℃, with constant stirring at 200-400 rpm for 20-40 minutes. The endpoint was determined by the transmittance of the mixed system being ≥95%, indicating that the oil phases were completely miscible and without stratification. This step aims to protect the structure of unsaturated fatty acids (such as avoiding isomerization) through a gentle temperature, while establishing a stable base to provide compatibility assurance for subsequent essential oil addition and ensure maximum transdermal absorption efficiency.

[0022] (3) Gradient mixing: Under the condition of maintaining the base oil temperature at 35-45℃ and the stirring speed at 200-400 rpm, add Artemisia argyi oil, lavender oil, rose essential oil, natural tocopherol, frankincense oil, and lecithin in sequence, with each addition precisely controlled at an interval of 10 minutes. In specific operation: first, add Artemisia argyi oil (temperature 40±2℃), then add lavender oil (stirring speed increased to 350 rpm), rose essential oil (maintained at 350 rpm), natural tocopherol (cooled down to 38℃), frankincense oil (restored to 40℃), and lecithin (restored to 40℃) in sequence at 10-minute intervals. Nitrogen gas is introduced throughout the process (flow rate 0.5 L / min), with a total time of 50-70 minutes to ensure that each molecule is fully dispersed and to prevent oxidation. This design optimizes the interaction between essential oil molecules through time-series control.

[0023] (4) Maturation treatment: The mixture is first filtered under pressure through a 200-mesh filter membrane to remove potential impurities; then it is transferred to a light-proof container and left to stand for 24-48 hours in an environment of 25±3℃ and humidity ≤60% (the time can be extended to 72 hours for sensitive skin formulas). After maturation, the essential oil extraction rate (≥98%) and turbidity (≤5 NTU) need to be tested. After passing the test, it is dispensed into dark glass bottles and sealed with nitrogen. This process forms a stable micelle structure through molecular self-assembly, which not only solves the oil-water separation problem, but also enhances the long-term stability of the formula, providing a reliable guarantee for oil bath applications.

[0024] Example 2 A plant-extracted mugwort oil for body oil baths, comprising the following components by weight percentage: 18g mugwort oil, 15g jojoba seed oil, 52.4g sweet almond oil, 4.3g lavender oil, 4g rose essential oil, 0.8g natural tocopherol, 0.5g frankincense oil, and 5g lecithin.

[0025] The preparation process of the above-mentioned plant-extracted mugwort oil for body oil baths includes the following steps: (1) Preparation of Artemisia argyi oil: Same as in Example 1.

[0026] (2) Base oil pretreatment: Same as in Example 1.

[0027] (3) Gradient mixing: Same as in Example 1.

[0028] (4) Curing treatment: Same as in Example 1.

[0029] Example 3 A plant-extracted mugwort oil for body oil baths, comprising the following components by weight percentage: 22g mugwort oil, 15g jojoba seed oil, 45.6g sweet almond oil, 6g lavender oil, 4.7g rose essential oil, 1g natural tocopherol, 0.7g frankincense oil, and 5g lecithin.

[0030] The preparation process of the above-mentioned plant-extracted mugwort oil for body oil baths includes the following steps: (1) Preparation of Artemisia argyi oil: Same as in Example 1.

[0031] (2) Base oil pretreatment: Same as in Example 1.

[0032] (3) Gradient mixing: Same as in Example 1.

[0033] (4) Curing treatment: Same as in Example 1.

[0034] Example 4 A plant-extracted mugwort oil for body oil baths, comprising the following components by weight percentage: 25g mugwort oil, 19g jojoba seed oil, 43.3g sweet almond oil, 4g lavender oil, 3g rose essential oil, 0.7g natural tocopherol, 0g frankincense oil, and 5g lecithin.

[0035] The preparation process of the above-mentioned plant-extracted mugwort oil for body oil baths includes the following steps: (1) Preparation of Artemisia argyi oil: Same as in Example 1.

[0036] (2) Base oil pretreatment: Same as in Example 1.

[0037] (3) Gradient mixing: Same as in Example 1.

[0038] (4) Curing treatment: Same as in Example 1.

[0039] Example 5 A plant-extracted mugwort oil for body oil baths, comprising the following components by weight percentage: 20g mugwort oil, 15g jojoba seed oil, 50g sweet almond oil, 5g lavender oil, 3.5g rose essential oil, 0.8g natural tocopherol, 0.7g frankincense oil, and 5g lecithin.

[0040] The preparation process of the above-mentioned plant-extracted mugwort oil for body oil baths includes the following steps: (1) Preparation of Artemisia argyi oil: Same as in Example 1.

[0041] (2) Base oil pretreatment: Same as in Example 1.

[0042] (3) Gradient mixing: Same as in Example 1.

[0043] (4) Curing treatment: Same as in Example 1.

[0044] Comparative Example 1 A plant-extracted mugwort oil for body oil baths differs from the formulation in Example 1 in that: an equal weight of mineral oil is used instead of jojoba seed oil, and 2,6-di-tert-butyl-p-cresol is used instead of natural tocopherol; the preparation process is the same as in Example 1.

[0045] Comparative Example 2 A plant-extracted mugwort oil for body oil baths has the same formula as in Example 1; however, its preparation process differs from that of Example 1 in that all components are mixed at once, stirred at 80°C and 1000 rpm at high speed, without filtration or aging processes.

[0046] Comparative Example 3 A plant-extracted mugwort oil for body oil baths, the formulation of which includes the following components by weight percentage: 6 g of mugwort oil, 10 g of jojoba seed oil, 60 g of sweet almond oil, 10 g of lavender oil, 3 g of rose essential oil, 0.5 g of natural tocopherol and 0.5 g of frankincense oil; its preparation process is the same as that in Example 1.

[0047] Test Example 1 Each sample group included no fewer than 30 subjects aged 18-60 years (with a focus on highly sensitive individuals aged 40-60 years). The gender ratio was set at 70%-90% female and 10%-30% male to reflect the sensitivity characteristics of cosmetics. Subjects who had used antihistamines / immunosuppressants within the past week, had skin lesions at the test site, or had immunodeficiency diseases were excluded. An aluminum closed-spot applicator (≤50mm²) was used, precisely applying 0.020g of solid sample or 0.020mL of liquid sample to the flexor surface of the forearm / back for 24 hours. Observations were taken three times after removal: 30 minutes, 24 hours, and 48 hours. Results were graded according to international standards (negative: no reaction; weakly positive: erythema / infiltration; strongly positive: vesicles / erosion). Results are shown in Table 1.

[0048] Table 1 Comparison of patch test data between the examples and comparative examples As shown in Table 1, Examples 1-5 of the present invention reduced the adverse reaction rate of sensitive skin to ≤1% through the combination of natural components and gradient process innovation. Compared with the formulations of Comparative Example 1 and Comparative Example 3, the safety was improved by more than 2 times, which proves the key role of all-natural formula and temperature-controlled emulsification process in eliminating skin irritation. The data confirms that avoiding synthetic solvents and optimizing the emulsification system can achieve a breakthrough in zero allergenization of oil bath products.

[0049] Test Example 2 10 mL of the essential oil sample to be tested was added to a 40℃ constant temperature water bath (capacity 2L) and stirred continuously at 300 rpm. The particle size distribution of the emulsion was monitored in real time using a laser particle size analyzer (0-60 min), and the emulsification completion time was recorded (D90 particle size ≤ 5 μm was considered complete emulsification). After standing for 24 hours, the volume ratio of the separated oil layer was measured, and the NTU value of the middle layer liquid was measured using a turbidimeter (reflecting the uniformity of dispersion). The results are shown in Table 2.

[0050] Table 2 Comparison of oil bath dispersion stability data Note: Stability rating: ★★★★★ (optimal) → Emulsification time ≤50s, separation rate ≤1.5%, turbidity ≤3.0NTU.

[0051] As shown in Table 2, Examples 1-5 of the present invention, through gradient mixing process and lecithin emulsification system, achieved rapid emulsification in 42-63 seconds and an ultra-low oil-water separation rate of 1.2%-2.3% (turbidity ≤3.8 NTU), with significantly improved stability compared to the formulation of Comparative Example 3. Among them, Example 5, with an emulsification time of 42 seconds and a separation rate of 1.2%, showed the best oil bath compatibility of the formulation. In contrast, Comparative Examples 1-2 failed to emulsify completely due to process deficiencies (separation rate >32%), confirming the decisive role of gradient temperature control and natural emulsifiers in dispersion stability.

[0052] Test Example 3 A double-blind controlled trial using electroencephalography (EEG) and the Self-Rating Anxiety Scale (SAS) was conducted. Fifty participants (aged 25-50 years, 60% of whom were prone to anxiety) used the sample in a 40°C oil bath for 20 minutes. Real-time recording of alpha wave (8-13Hz) power changes in the occipital region (reflecting relaxation) was performed. SAS scores were simultaneously collected before and after use (a score >50 was considered anxiety-related). The increase in alpha wave intensity and the decrease in SAS score were calculated. Results are shown in Table 3.

[0053] Test Example 4 Transdermal absorption was tested using the Franz diffusion cell method: Human skin samples (epidermal layer thickness 0.8 mm) were fixed between the supply and receiving cells. A sample solution containing 0.5% Artemisia argyi oil was added to the supply cell, and the receiving solution was physiological saline + 20% ethanol (at a constant temperature of 37℃). Samples were taken at 1, 2, 4, 8, 12, and 24 hours, and the cumulative permeation amount (μg / cm²) and permeation rate (μg / cm² / h) of eucalyptol were determined by HPLC. The results are shown in Table 3.

[0054] Table 3. Data on sedative effects and transdermal absorption rate As shown in Table 3, Example 5 of this invention achieved a 63.5% alpha wave amplification through the combination of lavender oil and rose essential oil. Simultaneously, jojoba seed oil enhanced penetration, resulting in a 24-hour cumulative penetration of eucalyptol in Artemisia argyi oil reaching 382.6 μg / cm² (a 293% increase in transdermal efficiency compared to Comparative Example 1), validating the core advantage of synergistic effects of natural components. Comparative Examples 1-3, however, suffered from a sharp decrease in efficacy due to the lack of emulsification or synthetic solvents (alpha wave amplification ≤ 21.3%, penetration less than 50%), confirming the decisive role of the formulation, low-temperature distillation, and gradient mixing process in the efficacy of this invention. The reason why Example 3 had a higher sedative effect than Example 4 may be that Example 3, with its lavender oil concentration exceeding the 5% sedative threshold and rose essential oil approaching the 4% anti-anxiety threshold, synergistically activated the GABA and 5-HT neural pathways. In contrast, Example 4, with its insufficient lavender / rose concentration (4% / 3%) and the mild camphor stimulation effect of the high-concentration Artemisia argyi oil (25%), partially offset the sedative effect.

[0055] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the original intent of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A plant extract artemisia oil for body oil bath, characterized by, Comprise the following components by mass percentage: Artemisia argyi oil 12-30%, Jojoba seed oil 8-25%, Base oil 40-70%, Functional essential oil 3-15%, Antioxidant 0.3-1.5%.

2. The plant extract artemisia oil according to claim 1, characterized by, The base oil is selected from at least one of the following: sweet almond oil, oil tea seed oil, grape seed oil, and the addition amount is 45-60%.

3. The plant extract artemisia oil according to claim 1, characterized by, The functional essential oil includes lavender oil and rose essential oil, wherein the lavender oil accounts for 2-8% of the total amount, and the rose essential oil accounts for 1-7% of the total amount.

4. The plant-extracted Artemisia argyi oil according to claim 1, characterized in that, The antioxidant is natural tocopherol, and the addition amount is 0.5-1.2%.

5. The plant extract oil of wormwood according to any one of claims 1 to 4, characterized in that, Also including 0.2-0.8% of frankincense oil.

6. The plant extract artemisia oil according to claim 5, characterized by, Comprise the following components by mass percentage: Artemisia argyi oil 15-25%, Jojoba seed oil 10-20%, Sweet almond oil 45-55%, Lavender oil 3-6%, Rose essential oil 2-5%, Natural tocopherol 0.5-1%.

7. The plant extract artemisia oil according to claim 6, characterized in that, Comprise the following components by mass percentage: Artemisia argyi oil 20%, jojoba seed oil 15%, sweet almond oil 50%, lavender oil 5%, rose essential oil 3.5%, natural tocopherol 0.8%, and frankincense oil 0.7%.

8. A process for the preparation of the plant extract oil of artemisia vulgaris as claimed in any one of claims 1 to 7, wherein, Comprise the following steps: (1) Artemisia argyi oil preparation: Artemisia argyi dry product is crushed to 80-120 mesh, and is extracted by steam distillation method, the mass-volume ratio of Artemisia argyi to water is 1:5-10, and the distillate is collected to separate Artemisia argyi oil; (2) Base oil pretreatment: mix and stir sweet almond oil and jojoba seed oil at 40-50℃ for 20-40 minutes; (3) Gradient mixing: add Artemisia argyi oil, lavender oil, rose essential oil, natural tocopherol and frankincense oil in turn under continuous stirring, and the interval between each addition is 10 minutes; (4) Maturation treatment: after the mixed liquid is filtered through a 200 mesh filter, it is placed in the dark for 24-48 hours.

9. The manufacturing process of claim 8, wherein, The step (1) distillation adds 0.1-0.5% of sodium chloride to the total amount of water.

10. The manufacturing process of claim 8, wherein, The mixing temperature of step (3) is controlled at 35-45℃, and the stirring speed is 200-400 rpm.

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