Natural plant essential oil compound and application thereof

Abstract

The present application relates to a kind of natural plant essential oil compound and its application, belong to compound essential oil technical field.The compound includes volatile repellent essential oil 4070 parts, fixed fragrance type essential oil 315 parts and auxiliary essential oil 1030 parts.The compound is loaded on natural porous mineral carrier, is sequentially coated with sodium alginate, is crosslinked to form calcium alginate gel film with calcium lactate, and then micro-encapsulated with beeswax ethanol solution atomization spraying, to obtain functional core body.The present application realizes long-acting stable release of repellent component by the synergistic compounding of high volatile essential oil and fixed fragrance type essential oil, combined with mineral carrier and gel film controlled-release system, 28 days repellent rate is greater than or equal to 60%, suitable for outdoor, mass and multi-scenarios such as mother and infant, and does not depend on chemical synthetic insecticide.

Description

Technical Field

[0001] This invention belongs to the field of compound essential oil technology, and relates to a natural plant essential oil compound and its application. Background Technology

[0002] In summer, mosquitoes are rampant, bringing us endless troubles. Mosquitoes not only cause noise, but also suck blood and release toxins, causing unbearable itching at the bite sites. They also carry bacteria and viruses, spreading diseases.

[0003] Currently, the main force in mosquito control is pyrethroid-based synthetic / semi-synthetic chemical agents, including mosquito repellent tablets, liquids, and sprays. However, as people become more aware of green and safe products, the market demand for safer, pure plant-based mosquito repellent products is becoming increasingly urgent, leading to a proliferation of patented products.

[0004] Currently, there are mosquito repellent patches / bracelets on the market that directly absorb essential oils using polymers. They are convenient to use and inexpensive, but they have the following drawbacks: they are disposable products, not renewable, and are discarded after the essential oils evaporate. The core cannot be replaced, resulting in serious resource waste and environmental pollution; the products have a short duration of effectiveness because the essential oils evaporate quickly when directly exposed or absorbed through a simple carrier, with effective protection lasting no more than a week; most products rely on chemicals such as DEET, IR3535, Picaridin, or permethrin, which are not friendly to sensitive groups such as infants and young children; and the appearance design is poor, lacking market appeal and willingness to wear them. Summary of the Invention

[0005] In view of this, the purpose of this invention is to provide a natural plant essential oil compound and its application.

[0006] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a natural plant essential oil compound, which contains 40-70 parts by weight of a highly volatile repellent essential oil, 3-15 parts by weight of a fixative essential oil, and 10-30 parts by weight of an auxiliary essential oil. The volatile repellent essential oil has a small molecular weight (<200g / moL) and a boiling point ≤250℃. It mainly forms an initial repellent barrier through rapid volatilization. It includes at least one of lemongrass oil, lemon eucalyptus oil, and pine oil, totaling 40-70 parts. The fixative essential oil has a relatively large molecular weight (>250g / mol) and a boiling point ≥250℃. It is adsorbed into the pores of a porous mineral carrier, and its release is delayed under the synergistic effect of the calcium alginate gel membrane, thus balancing the overall volatility curve. It includes at least one of patchouli oil, vetiver oil, and sandalwood oil, totaling 3-15 parts. The auxiliary essential oils have both repellent and soothing functions, and optimize the user experience. They include at least one of clove leaf oil, peppermint oil, patchouli oil, lavender oil, tea tree oil, and Roman chamomile oil, totaling 10-30 parts.

[0007] Preferably, the essential oil compound is composed of the following ingredients: 30-40 parts by weight of lemon eucalyptus oil, 20-30 parts by weight of pine oil, 15-20 parts by weight of lemongrass oil, 5-10 parts by weight of peppermint oil, 5-8 parts by weight of patchouli oil, and 3-5 parts by weight of clove oil.

[0008] Preferably, the essential oil compound consists of the following components: 50-70 parts by weight of lemongrass oil, 10-15 parts by weight of clove leaf oil, 10-15 parts by weight of peppermint oil, and 5-10 parts by weight of patchouli essential oil.

[0009] Preferably, the essential oil compound consists of the following components: 50-60 parts by weight of lemongrass oil, 3-5 parts by weight of patchouli essential oil, 10-15 parts by weight of Roman chamomile oil, 10-15 parts by weight of sweet orange essential oil, and 10-15 parts by weight of lavender oil.

[0010] The present invention also provides a functional core, the functional core comprising: Porous mineral carrier; Any one of the natural essential oil compounds is loaded into the pores of the porous mineral carrier; The open ends of the pores in the porous mineral carrier are covered with a layer of calcium alginate gel membrane.

[0011] Preferably, the porous mineral carrier is any one of volcanic rock, pumice, volcanic rock, and zeolite; Preferably, the method for preparing the functional core is as follows: S1: Essential Oil Loading The pretreated porous mineral carrier was immersed in an emulsion consisting of any natural essential oil compound and 60 parts by weight of Tween-80, and immersed for 15 minutes under a vacuum of 0.08 MPa to allow the essential oil to penetrate into the mineral pores. S2: Sodium alginate biofilm formation and calcium lactate cross-linking Remove the porous mineral carrier, gently wipe off the surface oil, immerse it in a 0.5% sodium alginate solution for 5 seconds, and then quickly transfer it into a 5% calcium lactate solution for 15 seconds to form a dense calcium alginate gel film on the surface of the mineral sheet and at the pore entrance. S3: Beeswax micro-sealing The functional core is prepared by atomizing and spraying a 0.6% beeswax-95% food-grade ethanol solution onto the surface of the thin sheet, uniformly covering the pore openings, and then ventilating and air-drying it.

[0012] Preferably, the pretreatment method for the porous mineral carrier is as follows: The porous mineral carrier is cut and polished into 20-25mm circular pieces with a thickness of 0.5-2.5mm. It is then rinsed with running water, ultrasonically cleaned, and deionized water for 10 minutes in sequence. It is then immersed in 1% NaOH solution for 10 minutes to perform surface hydrophilic modification. Finally, it is rinsed with deionized water until neutral and dried at 60℃.

[0013] The beneficial effects of this invention are as follows: This invention discloses a natural plant essential oil compound, a multifunctional plant essential oil sustained-release core based on a natural mineral carrier, and its preparation method. The functional core consists of natural porous mineral sheets, a compound plant essential oil loaded within the mineral pores, and a calcium alginate gel membrane coated on the surface. The compound plant essential oil, through the synergistic blending of highly volatile and low-volatile fixative oils, combined with the calcium alginate gel membrane and beeswax micro-sealing technology, achieves a long-lasting and stable release of the repellent components. It can be flexibly formulated according to the usage scenario, suitable for outdoor environments with high mosquito density, public scenarios such as waiting areas, and for mothers and infants with high safety requirements. This invention does not rely on chemically synthesized insecticides throughout the entire process; the materials used are natural and biodegradable, and it features high repellency, green safety, and the ability to be repeatedly replenished and regenerated.

[0014] The potent essential oil blend of this invention has an avoidance rate of ≥70% after 28 days; the general-purpose essential oil blend has an avoidance rate of ≥65% after 28 days; and the maternal and infant type essential oil blend has an avoidance rate of ≥60% after 28 days, and contains no irritating ingredients.

[0015] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0016] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the functional core. Figure 2 This is a schematic diagram of the cross-sectional structure of the functional core. Detailed Implementation

[0017] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0018] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0019] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0020] Example 1: High-potency outdoor compound essential oil formulation Lemon eucalyptus oil 30-40 parts by weight, pine oil 20-30 parts by weight, lemongrass oil 15-20 parts by weight, peppermint oil 5-10 parts by weight, patchouli oil 5-8 parts by weight, clove oil 3-5 parts by weight.

[0021] Note: This embodiment is suitable for high mosquito density environments such as outdoors, camping, and grassy areas. It utilizes the synergistic and potent repellent effect of p-menthane-3,8-diol (PMD) abundant in lemon eucalyptus oil and terpenoids in pine oil. This formula contains lemon eucalyptus oil and is not recommended for use on infants under 3 years old.

[0022] Example 2: Classic Universal Compound Essential Oil Formula 50-70 parts by weight of lemongrass oil, 10-15 parts by weight of clove leaf oil, 10-15 parts by weight of peppermint oil, and 5-10 parts by weight of patchouli essential oil.

[0023] Example 3: Mild Compound Essential Oil Formula for Mothers and Infants 50-60 parts by weight of lemongrass oil, 3-5 parts by weight of patchouli essential oil, 10-15 parts by weight of Roman chamomile oil, 10-15 parts by weight of sweet orange essential oil, and 10-15 parts by weight of lavender oil.

[0024] Note: In this embodiment, lemon eucalyptus oil and highly toxic phenolic essential oils are avoided. The fixative component is low-irritant patchouli oil or a trace amount of patchouli essential oil.

[0025] Example 4: Preparation of functional core (in-situ gel encapsulation method) 1. Material selection and shaping: Select natural pumice or volcanic rock with well-developed pores and low density, cut and grind it into round thin slices of Φ20-25mm, with the thickness controlled at 0.5-2.5mm.

[0026] 2. Cleaning and activation Rinse with running water and ultrasonically clean (deionized water) for 10 minutes; immerse in 1% NaOH solution for 10 minutes to perform surface hydrophilic modification; rinse with deionized water until neutral, and dry at 60℃ for later use.

[0027] 3. Essential oil load The pretreated mineral flakes were immersed in an emulsion consisting of the following components: 15g lemongrass oil, 3g clove leaf oil, 3g peppermint oil, 2g patchouli oil, and 60g Tween-80. The flakes were immersed for 15 minutes under a vacuum of 0.08MPa (to remove air from the pores and improve the permeability of the essential oils) to allow the essential oils to penetrate into the mineral pores.

[0028] 4. Sodium alginate biofilm formation Remove the thin slice, gently wipe off the surface oil, and immerse it in a 0.5% sodium alginate solution for 5 seconds. Quickly transfer it to a 5% calcium lactate solution for 15 seconds to form a dense calcium alginate gel film on the surface of the mineral thin slice and at the pore entrances.

[0029] 5. Beeswax micro-sealing The surface of the thin sheet is atomized and sprayed with a 0.6% beeswax-95% food-grade ethanol solution to evenly cover the pore openings, avoiding clogging the internal channels. After ventilation and air drying, the finished functional core is obtained.

[0030] Example 5 Performance Testing 1. Experimental conditions Test subject: Culex pipiens pallens (Palladium pallens). Test environment: temperature 26±2℃, relative humidity 55±5%, wind speed 0.2m / s; Evaluation method: Contact cylinder method (WHO recommended modified method); Judgment criteria: A repellency rate of ≥60% is considered effective protection.

[0031] 2. Experimental Grouping and Formulation

[0032] Note: The comparative carrier in this application is a cotton core. The core improvement lies in the controlled-release system of mineral carrier + gel membrane + beeswax micro-sealing, rather than a simple essential oil formula.

[0033] 3. Comparison of duration of effectiveness and avoidance rate

[0034] 4. Beneficial effects 4.1 The addition of patchouli oil significantly reduced the burst release effect of highly volatile essential oils; 4.2 High-efficiency type: 28-day avoidance rate ≥70%; 4.2 General-purpose 28-day avoidance rate ≥ 65%; 4.3 The mother-infant type has a 28-day repellency rate of ≥60% and contains no irritating ingredients.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A natural plant essential oil compound, characterized in that: The natural plant essential oil compound contains 40-70 parts by weight of highly volatile repellent essential oil, 3-15 parts by weight of fixative essential oil, and 10-30 parts by weight of auxiliary essential oil; The volatile repellent essential oils include at least one of lemongrass oil, lemon eucalyptus oil, and pine oil; The fixative essential oil includes at least one of patchouli oil, vetiver oil, and sandalwood oil; The auxiliary essential oils include at least one of clove leaf oil, peppermint oil, patchouli oil, lavender oil, tea tree oil, and Roman chamomile oil.

2. The natural plant essential oil compound according to claim 1, characterized in that: The essential oil blend consists of the following ingredients: 30-40 parts by weight of lemon eucalyptus oil, 20-30 parts by weight of pine oil, 15-20 parts by weight of lemongrass oil, 5-10 parts by weight of peppermint oil, 5-8 parts by weight of patchouli oil, and 3-5 parts by weight of clove oil.

3. The natural plant essential oil compound according to claim 1, characterized in that: The essential oil compound consists of the following ingredients: 50-70 parts by weight of lemongrass oil, 10-15 parts by weight of clove leaf oil, 10-15 parts by weight of peppermint oil, and 5-10 parts by weight of patchouli essential oil.

4. The natural plant essential oil compound according to claim 1, characterized in that: The essential oil blend consists of the following ingredients: 50-60 parts by weight of lemongrass oil, 3-5 parts by weight of patchouli essential oil, 10-15 parts by weight of Roman chamomile oil, 10-15 parts by weight of sweet orange essential oil, and 10-15 parts by weight of lavender oil.

5. A functional core, characterized in that: The functional core includes: Porous mineral carrier; The essential oil compound according to any one of claims 1-4 is loaded into the pores of the porous mineral carrier; The open ends of the pores in the porous mineral carrier are covered with a layer of calcium alginate gel membrane.

6. The functional core according to claim 5, characterized in that: The porous mineral carrier is any one of volcanic rock, pumice, volcanic rock, or zeolite.

7. A method for preparing a functional core according to any one of claims 5-6, characterized in that: S1: Essential Oil Loading The pretreated porous mineral carrier is immersed in an emulsion composed of the essential oil compound described in any one of claims 1-4 and 60 parts by mass of Tween-80, and is immersed for 15 minutes under a vacuum of 0.08 MPa to allow the essential oil to penetrate into the mineral pores. S2: Sodium alginate biofilm formation and calcium lactate cross-linking Remove the porous mineral carrier, gently wipe off the surface oil, immerse it in a 0.5% sodium alginate solution for 5 seconds, and then quickly transfer it into a 5% calcium lactate solution for 15 seconds to form a dense calcium alginate gel film on the surface of the mineral sheet and at the pore entrance. S3: Beeswax micro-sealing The functional core is prepared by atomizing and spraying a 0.6% beeswax-95% food-grade ethanol solution onto the surface of the thin sheet, uniformly covering the pore openings, and then ventilating and air-drying it.

8. The preparation method according to claim 7, characterized in that, The pretreatment method for the porous mineral carrier is as follows: The porous mineral carrier is cut and polished into 20-25mm circular pieces with a thickness of 0.5-2.5mm. It is then rinsed with running water, ultrasonically cleaned, and deionized water for 10 minutes in sequence. It is then immersed in 1% NaOH solution for 10 minutes to perform surface hydrophilic modification. Finally, it is rinsed with deionized water until neutral and dried at 60℃.

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