CN110215532A - A kind of plants essential oil water solvent combinations object and preparation method thereof - Google Patents

Abstract

The invention discloses a plant essential oil water solvent with air purification effect and a preparation method thereof. The composition of the plant essential oil water solvent in parts by weight is as follows: 1-2 parts of plant essential oil, 3-12 parts of fatty alcohol polyoxyethylene ether 7, 2-12 parts of absolute ethanol, and 74-94 parts of distilled water. Among them, the plant essential oils are composed of 20-40 parts of cinnamon essential oil, 20-40 parts of Radix vulgaris essential oil, 5-15 parts of thyme essential oil, 5-15 parts of peppermint essential oil, 5-15 parts of Melaleuca alternifolia essential oil, 5-15 parts of lemon Essential oil composition. In the plant essential oil water solvent preparation process, above-mentioned parts by weight plant essential oil, fatty alcohol polyoxyethylene ether 7, and ethanol are first added to the container and mixed, then the distilled water of the above-mentioned parts by weight is added, and stirred until clear and transparent. The essential oil water solvent of the present invention has a broad-spectrum antibacterial effect, and can be diffused into the air by means of spraying and aromatherapy to purify the air. The prepared essential oil water solvent has clear and transparent appearance, fragrant smell, and can play the role of fresh air at the same time.

Description

A kind of plant essential oil water solvent composition and preparation method thereof

technical field

The invention relates to a plant essential oil water solvent composition and a preparation method thereof, belonging to the technical field of air purifiers.

Background technique

At present, people spend an average of 57% and 75% of the 24 hours a day in the indoor environment at work and during holidays, so indoor air quality is one of the factors that cannot be ignored that affects people's health. The number of bacteria in the air is an important indicator of air quality. Excessive bacteria in the indoor air will not only irritate the eyes of the human body, cause allergies to the skin and respiratory system, but also may make people feel unwell, causing headache, chest pain, cough, diarrhea and other symptoms. Certain bacteria in the air may also cause a variety of respiratory infections when the body's immunity is low. It can be seen that controlling the number of bacteria in indoor air within a certain range will help improve people's quality of life.

At present, in addition to air purifiers, ultraviolet disinfection and other methods, chemical air bactericides are still widely used. The main active ingredients of these chemical air bactericides include various aldehydes, alcohols, quaternary ammonium salt compounds, chlorine-containing compounds, polyhexamethylene guanidine and the like. Long-term spraying of chemical air bactericides indoors may also stimulate the human body to a certain extent, and may cause certain damage to the human eyes and human respiratory tract.

Extracted from plants, essential oils have an aromatic smell and are a mixture of many volatile small-molecule compounds. Many natural plant essential oils have good bactericidal properties. The development of air bactericides with natural plant essential oils as the main components can not only play a significant bactericidal effect on bacteria in the air, but also can freshen the air with its fragrant smell.

At present, there are many essential oils with bactericidal effects reported by scientific research, and there are differences in the antibacterial objects of different essential oils. Single use of one essential oil cannot achieve a relatively broad-spectrum antibacterial effect. On the other hand, the odor acceptance of a single essential oil is often not high, so it is often necessary to formulate compound essential oils in daily life.

In order to avoid irritation to the human body due to the high concentration of essential oils, diluting essential oils with water as a medium is the safest and cheapest way. Dissolving the essential oil in water and fully diluting it can make the essential oil have more utilization methods, such as direct spraying, making aromatherapy liquid, etc., which not only facilitates the utilization of essential oils, improves the utilization efficiency, but also reduces the cost. Since the essential oil itself is not water-soluble, a suitable solubilizer must be used to increase its solubility in water, so that the essential oil can be sprayed evenly in the indoor air. In addition to good solubilizing properties, the application requirements for solubilizers should be non-toxic, harmless, and non-irritating, so as to avoid adverse effects on the human body after the essential oil water solvent is sprayed in the air. Whether the solubilizer itself will affect the antibacterial ability of essential oils is also a question that must be demonstrated experimentally.

At present, Tween series are often used as essential oil solubilizers, among which Tween 20 is the most widely used. However, due to the complex composition of plant essential oils, the solubilization effect of the same solubilizer on different essential oils is quite different. For example, the use of Tween 20 can well solubilize peppermint essential oil, making its water solvent clear and transparent, but it cannot make lemon essential oil and tea tree essential oil achieve the same solubilizing effect. Therefore, it is very necessary to select a suitable and efficient solubilizer for preparing the water solvent of a specific essential oil combination.

SUMMARY OF THE INVENTION

In view of the above problems, the present invention provides a method for preparing a compound plant essential oil water solvent with an air purification effect. The essential oil water solvent prepared by the method has fragrant smell, clear and transparent appearance, strong antibacterial effect on indoor air, safety and non-toxicity.

The present invention is achieved through the following technical solutions:

In a first aspect, the present invention provides a plant essential oil water solvent composition, which comprises the following components in parts by weight:

As a preferred solution, the mass ratio of the plant essential oil and the solubilizer is 1:(3-6).

As a preferred solution, the solubilizer is aliphatic alcohol polyoxyethylene ether.

As a preferred solution, the mass ratio of the solubilizer and the cosolvent is (2-3):3.

As a preferred solution, the cosolvent is anhydrous ethanol.

As a preferred version, the plant essential oil includes the following components by weight:

In the second aspect, the present invention also provides a preparation method of the aforementioned plant essential oil water solvent composition, which comprises the steps:

Add solubilizer and co-solvent to the plant essential oil, add distilled water after mixing, and mix until it is clear and transparent.

In the present invention, fatty alcohol polyoxyethylene ether 7 is used as a solubilizer. Fatty alcohol polyoxyethylene ether, referred to as "alcohol ether", is a typical non-ionic solubilizer. This solubilizer is non-toxic, inexpensive, has good surface properties, good wetting and emulsifying properties, is not affected by water hardness, has excellent biodegradability, and has good low-temperature properties. It is used in the pharmaceutical industry and daily chemical industry. and other fields have a wide range of applications.

The essential oil chemical composition and efficacy involved in the present invention are described as follows:

Cinnamon Essential Oil:

Cinnamon essential oil is a yellow to reddish-brown clear liquid with a characteristic pungent odor. In the food and daily chemical industries, cinnamon essential oil is widely used as the essence of spices and cosmetics and daily necessities. The components of cinnamon essential oil are mainly aldehydes, and cinnamaldehyde is the main chemical component of cinnamon essential oil. In addition, cinnamon essential oil also contains a certain amount of esters, alcohols and terpenes.

Ashwagandha essential oil:

Radix japonica is one of the aromatic plant resources specializing in China. The flowers, leaves, fruits, etc. of the whole plant can be used to extract the essential oil, but most of the essential oils are extracted from the fruit. The essential oil is a volatile oily liquid, mostly pale yellow to brownish yellow, with a pleasant lemon fruit fragrance, and has good antibacterial and antiseptic effects. The main chemical constituents of the essential oil of Radix japonica is citral. Studies have shown that the 3% concentration of Radix japonica oil can be applied to human skin to have a good inhibitory effect on dermatophytosis. The essential oil of Radix chinensis also has unique medicinal value, not only has antibacterial ability, but also has a certain therapeutic effect on allergies, thrombosis, arrhythmia and other symptoms.

Thyme essential oil:

Thyme essential oil is mainly extracted from the leaves and flowers of its plants. It is a light yellow liquid with a strong herbal fragrance and has great application value. Thyme essential oil has a certain therapeutic effect on colds, coughs and sore throats, so it is widely used in medical care, daily chemical industry and other industries. The main components thymol and carvacrol contained in thyme have good antibacterial and antiseptic effects. Thyme perfume was habitually sprayed by Europeans in public places such as courts and tribunals, and was used as a disinfectant in European hospitals during the first and second world wars. In recent years, thyme essential oil is often used as an additive in the food industry to use its antibacterial and antioxidant properties to insure food and prevent oxidation and spoilage of food.

Peppermint Essential Oil:

Peppermint essential oil has a cool smell, strong fragrance, freshness and transparency, and has good effects on the human body both psychologically and physiologically. Peppermint essential oil has a certain therapeutic effect on human respiratory tract infections, and can also soothe the body and mind, boost the spirit, and appease the emotions of anger and fear. Peppermint essential oil has a good inhibitory effect on a variety of pathogenic bacteria. The main components of peppermint essential oil are menthol and menthone. Among them, menthol also has obvious choleretic and anti-irritating effects, which can enhance the secretion of trachea, and the mucus attached to the trachea is easy to discharge, thus playing a better effect of expectorating phlegm and relieving cough.

Tea tree oil:

The plant essential oil extracted from the fresh leaves and twigs of Melaleuca alternifolia by steam distillation is called "tea tree essential oil" in the circulation market. Tea tree oil is a colorless to pale yellow, highly volatile essential oil with a fresh, slightly pungent woody odor. Tea tree oil has a good inhibitory effect on a variety of gram-positive bacteria, gram-negative bacteria and fungi. Tea tree oil also has a certain anti-inflammatory effect and is less irritating to the skin, and can be applied directly to the skin in a small area in aromatherapy. The main chemical constituents of tea tree oil are (-)-4-terpineol and terpinene.

Lemon Essential Oil:

Lemon essential oil is extracted from the peel of lemons. Lemon essential oil has a refreshing and fresh citrus aroma that can provide a certain boost of energy. The main chemical of lemon essential oil is called limonene, and limonene has an inhibitory effect on a variety of pathogenic bacteria.

Compared with the prior art, the present invention has the following beneficial effects:

The essential oil water solvent prepared by the formula and method of the present invention includes aldehyde compounds such as cinnamaldehyde and citral, alcohol compounds such as (-)-4-terpineol and menthol, and terpenes such as limonene and terpinene. Olefins and phenolic compounds such as carvacrol have broad-spectrum antibacterial effects, which can be diffused into the air by spraying and aromatherapy to purify the air. The prepared essential oil water solvent has a clear and transparent appearance and a fragrant smell, and at the same time can play the role of fresh air, has good practical application value, and can be applied and developed into air spray, aromatherapy products and the like.

Detailed ways

The present invention will be described in detail below with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

Example 1

Weigh 0.15 grams of cinnamon essential oil, 0.15 grams of pineapple essential oil, 0.05 grams of lemon essential oil, 0.05 grams of thyme essential oil, 0.05 grams of peppermint essential oil, and 0.05 grams of tea tree essential oil into a 100-ml glass beaker. Add 3 grams of fatty alcohol polyoxyethylene ether 7 and 2.5 grams of absolute ethanol to the beaker. Stir the above essential oil, absolute ethanol and solubilizer with a glass rod evenly. Continue to add 25 grams of distilled water to the beaker. An electric stirrer was used to stir the above aqueous solution at room temperature for 5 minutes to obtain a clear and transparent essential oil water solvent.

Example 2

Weigh 2 grams of cinnamon essential oil, 1 gram of Astragalus essential oil, 0.5 grams of lemon essential oil, 0.5 grams of thyme essential oil, 0.5 grams of peppermint essential oil, and 0.5 grams of tea tree essential oil into a 500-ml glass beaker. Add 25 grams of fatty alcohol polyoxyethylene ether 7 and 25 grams of absolute ethanol to the beaker. Stir the above essential oil, absolute ethanol and solubilizer with an electric mixer. Continue to add 195 grams of distilled water to the beaker. An electric stirrer was used to stir the above aqueous solution at room temperature for 10 minutes to obtain a clear and transparent essential oil water solvent.

Example 3

In this example, the antibacterial effect of the water solvent prepared from each single essential oil contained in the compound essential oil of the present invention was measured. At the same time, an aqueous solvent containing no essential oil but containing ethanol and fatty alcohol polyoxyethylene ether 7 was used as a control group.

Preparation of essential oil water solvent: Weigh 2 grams of essential oils of cinnamon, Radix japonica, tea tree, lemon, peppermint, and thyme into a 500-ml glass beaker. Add 12 grams of fatty alcohol polyoxyethylene ether 7 and 10 grams of absolute ethanol to the beaker. Stir the above essential oil, absolute ethanol and fatty alcohol polyoxyethylene ether 7 with a glass rod evenly. Continue to add 76 grams of distilled water to the beaker. An electric stirrer was used to stir the above aqueous solution at room temperature for 10 minutes to obtain a clear and transparent essential oil water solvent.

Preparation of control solution: 12 grams of fatty alcohol polyoxyethylene ether 7 and 10 grams of absolute ethanol were added to the beaker. Anhydrous ethanol and fatty alcohol polyoxyethylene ether 7 were stirred uniformly with a glass rod. Continue to add 78 grams of distilled water to the beaker. An electric stirrer was used to stir the above aqueous solution at room temperature for 10 minutes to obtain a clear and transparent control solution.

Bacteriostatic experimental method: place a petri dish with 20ml of sterile medium in the toilet, open the lid of the petri dish, and place it in the air for natural inoculation for 2 hours. Place a piece of filter paper in the center of the inner side of the petri dish cover, and drop 0.2g, 1g, 2.5g, 7g, 10g of unilateral essential oil water solvent and 10g of the control treatment solution on the center of the filter paper with a dropper. The dish was formed into a gas-phase atmosphere, sealed with parafilm, incubated in a constant temperature incubator at 37°C for 48 hours, and the number of colonies in the dish was counted.

Table 1 Antibacterial effect of unilateral essential oil water solvent with different dosages

Bacteriostatic test results: the essential oil water solvent prepared by using the single essential oil involved in the present invention can all have a better inhibitory effect on bacteria in the air. The number of colonies in the petri dishes treated with the control group was much higher than that in the essential oil water solvent treatment group. Among them, cinnamon essential oil and linden essential oil have the best antibacterial effect on bacteria in the air.

Example 4

In this example, the inhibitory effect of the essential oil water solvent involved in the present invention on bacteria in the air in practical application is verified through the antibacterial experiment.

Preparation of essential oil water solvent: Weigh 7.6 g of cinnamon essential oil, 7.6 g of Radix japonica essential oil, 1.2 g of lemon essential oil, 1.2 g of thyme essential oil, 1.2 g of peppermint essential oil, and 1.2 g of tea tree essential oil into a 2-liter glass beaker. Add 77.2 grams of fatty alcohol polyoxyethylene ether 7 and 57.2 grams of absolute ethanol to the beaker. Stir the above essential oil, absolute ethanol and fatty alcohol polyoxyethylene ether 7 with an electric stirrer evenly. Continue to add 845.6 grams of distilled water to the beaker. An electric stirrer was used to stir the above aqueous solution at room temperature for 10 minutes to obtain a clear and transparent essential oil water solvent.

Antibacterial test method: 3 toilets (20 square meters in area) were selected for each experiment, and 5 petri dishes with a diameter of 9 cm and 20 ml of sterile culture medium were placed in 4 of the toilets by the five-point sampling method. The corners and the center were exposed to the air in the bathroom for 30 min for bacterial inoculation. The 15 mediums used for bacterial inoculation were then covered, put away, and sealed with a sealing tape. Spray the same amount of compound essential oil solution evenly in the air of the three bathrooms with a sprayer, close the doors and windows after spraying, and fumigate for 1 hour. After fumigation, 5 endless petri dishes were placed in the 4 corners and the center of 3 bathrooms by 5-point sampling method, and exposed to the air in the bathroom for 30 min. After inoculation, the 15 petri dishes were sealed with sealing strips. Put 30 culture media before and after fumigation in an incubator at 37°C, and after culturing for 48 hours, count the number of colonies in the petri dish, take the average of 3 toilet petri dishes, and calculate the sterilization rate.

Sterilization rate=[(the number of colonies before disinfection-the number of colonies after disinfection)/the number of colonies before disinfection]×100%.

In this example, the bacteriostatic effect of 5 doses of essential oil water solvent sprays was determined in total. The results are shown in the table below.

The bacteriostatic effect of the essential oil water solvent of table 2 different dosages

Experimental results: The bathroom is a place where bacteria in the air are relatively concentrated. By spraying the essential oil water solvent, an effective bacteriostatic effect can be achieved on the air in the bathroom. The bacteriostatic effect of the essential oil water solvent was positively correlated with the dosage. When 100 grams of essential oil water solvent is sprayed in every 20 square meters of bathroom, it is equivalent to the dosage of about 0.5% of the volume half of the space, and the antibacterial rate of this dose to bacteria in the air can reach 64.3%. When spraying 300 grams of essential oil water solvent in every 20 square meters of toilet, it is equivalent to the dosage of about 1.5% of the volume half of the space, and the antibacterial rate of this dose on bacteria in the air can reach 92.68%.

Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and those skilled in the art can make various variations or modifications within the scope of the claims, which do not affect the essential content of the present invention.

Claims (7)

1. a kind of plants essential oil water solvent combinations object, which is characterized in that including following component according to parts by weight:

2. plants essential oil water solvent combinations object as described in claim 1, which is characterized in that the plants essential oil and solubilizer Mass ratio is 1:(3~6).

3. plants essential oil water solvent combinations object as claimed in claim 2, which is characterized in that the solubilizer is fatty alcohol polyoxy Vinethene.

4. plants essential oil water solvent combinations object as described in claim 1, which is characterized in that the matter of the solubilizer and cosolvent Amount is than being (2~3): 3.

5. plants essential oil water solvent combinations object as claimed in claim 4, which is characterized in that the cosolvent is dehydrated alcohol.

6. plants essential oil water solvent combinations object as described in claim 1, which is characterized in that the plants essential oil includes by weight The following component of number meter:

7. a kind of preparation method of plants essential oil water solvent combinations object as described in claim 1, which is characterized in that including as follows Step:

Solubilizer and cosolvent are added in plants essential oil, distilled water is added after mixing, mixes to clear.