Essential oil deodorizing liquid based on natural plant extract and preparation method thereof

Abstract

The invention discloses essential oil deodorizing liquid based on natural plant extracts and a preparation method of the essential oil deodorizing liquid, and relates to the technical field of air. The essential oil deodorizing liquid based on the natural plant extracts is prepared from the following components: natural plant extract essential oil, low-carbon alcohol, perfume, a tea leaf extract, polyethylene glycol and purified water. The preparation method of the essential oil deodorizing liquid based on the natural plant extract comprises the following steps: step 1, preparing raw materials; step 2, mixing low-carbon alcohol with purified water to form a basic solution, then adding the tea leaf extract, and continuously stirring until the tea leaf extract is completely dissolved; step 3, slowly adding polyethylene glycol into the mixed solution while stirring, and homogenizing the mixed solution by using a homogenizer after stirring to eliminate particles or bubbles; and step 4, filtering, packaging and quality detection are carried out. The deodorization rate of the deodorization liquid is greatly improved, and meanwhile, the production cost is reduced.

Description

Technical Field

[0001] The present invention is based on the technical field of air purification, and more specifically relates to an essential oil deodorizing liquid based on natural plant extracts and a preparation method thereof. Background Art

[0002] With the improvement of modern living standards, people have higher and higher requirements for air quality in their living environment and workplace. Various odor sources such as kitchen fumes, bathroom odors, harmful gases released by decoration materials, and various odors produced in daily life have seriously affected people's quality of life and health. Traditional deodorization methods such as physical adsorption, chemical neutralization, and masking deodorizers have the following shortcomings: (1) Existing deodorizing liquids are not ideal in removing specific odors; (2) The purity of the active ingredients in the existing deodorizing liquid is low during the extraction process, resulting in large fluctuations in the deodorizing effect; (3) Existing deodorizing liquids have unstable effects, are prone to secondary pollution, and are harmful to the human body.

[0003] Therefore, the present invention discloses an essential oil deodorizing liquid based on natural plant extracts and a preparation method thereof, which solves the problems existing in the prior art through natural plant extracts and a novel extraction process, effectively removes a variety of odors, has a simple preparation process and high extraction purity, and is non-toxic and harmless, does not generate pollution, and meets market demand. Summary of the invention

[0004] In view of the deficiencies of the above-mentioned technologies, the deficiencies of traditional deodorizing liquids in removing odors, preparation processes, stability and environmental pollution, the present invention discloses an essential oil deodorizing liquid based on natural plant extracts and a preparation method thereof, which can effectively remove a variety of odors, has a simple preparation process and high extraction purity, and is non-toxic and harmless, thus meeting user needs.

[0005] The invention discloses an essential oil deodorizing liquid based on natural plant extracts, which adopts the following components: 60-70 parts of natural plant extract essential oils, 15-25 parts of low-carbon alcohols, 2-8 parts of spices, 2-8 parts of tea extracts, 5-10 parts of polyethylene glycol and 20-30 parts of purified water.

[0006] As a further embodiment of the present invention, the natural plant extract essential oil includes 30-50 parts of spearmint essential oil, 20-40 parts of lemon essential oil, 10-20 parts of citrus essential oil, 10-20 parts of sandalwood essential oil and 10-20 parts of ylang-ylang essential oil.

[0007] As a further embodiment of the present invention, the formula ratio of the natural plant extract essential oil is 4:3:1:1:1:1: spearmint essential oil: lemon essential oil: citrus essential oil: sandalwood essential oil: ylang-ylang essential oil; according to the formula ratio, spearmint essential oil, lemon essential oil, citrus essential oil, sandalwood essential oil and ylang-ylang essential oil are added to the container in sequence, stirred for 10 to 15 minutes, and the stirring speed is 20 to 30 r / min. After the stirring is completed, it is allowed to stand for 24 to 36 hours.

[0008] As a further embodiment of the present invention, the preparation process of the spearmint essential oil is: (1) selecting the above-ground parts of spearmint plants in the flowering period as raw materials, washing and drying the harvested spearmint raw materials, crushing the dried spearmint stems and leaves into spearmint powder, and filtering the powder; (2) Place the spearmint powder into a sealed extraction kettle and inject , adjust the temperature range to 35~45℃ and the pressure to 8.1~11.3MPa Reach supercritical state for essential oil extraction, the extraction time is 2.5~4.5h, Flow rate is 150~200kg / h, Concentration is 95%~99%; (3) When the extraction reaches the preset time, stop injecting , the pressure is adjusted to 0.5MPa~1.0MPa, the temperature is adjusted to 45~50℃, and the supercritical Expand to the separation vessel, supercritical Loss of solvent power, thus releasing spearmint essential oil; (4) Open the collection valve to collect the spearmint essential oil, and then perform homogenization, filling and refrigeration to maintain the stability of the spearmint essential oil.

[0009] As a further embodiment of the present invention, the water loss rate of the spearmint plant raw material during the drying process is between 50% and 65%.

[0010] As a further embodiment of the present invention, the preparation process of the lemon essential oil is: (1) Wash the lemons and peel off the lemon peels using a robot; crush the peeled lemon peels into powder, and filter them to obtain lemon peel powder; (2) Evenly mix petroleum ether and lemon peel powder for soaking and extraction; In the first soaking extraction stage, the ratio of lemon peel powder to petroleum ether is 30:1-40:1; the solution mixed with petroleum ether and lemon peel powder is placed in a constant temperature water bath, the temperature is set to 35-45°C, the pressure is 0.5MPa-0.8MPa, and the soaking extraction time is 2.0-3.0h; after the soaking, the extract is separated from the lemon peel powder using a Buchner funnel to collect the first extract; In the second soaking and extraction stage, the lemon peel powder remaining after the first soaking is stirred to remove the petroleum ether attached to the surface, and petroleum ether is added to the treated lemon peel powder again, and the ratio of lemon peel powder to petroleum ether is 40:1~45:1; the temperature is set to 25~35°C, the pressure is 0.5MPa~0.7MPa, and the soaking and extraction time is 1.0~2.0h; after the soaking is completed, the extract is separated from the lemon peel powder using a Buchner funnel to collect the obtained second extract; In the third soaking and extraction stage, the lemon peel powder remaining after the second soaking is stirred to remove the petroleum ether attached to the surface, and petroleum ether is added to the treated lemon peel powder again, and the ratio of lemon peel powder to petroleum ether is 40:1~50:1; the temperature is set to 30~35°C, the pressure is 0.8MPa~1.0MPa, and the soaking and extraction time is 0.5~1.0h; after the soaking is completed, the extract is separated from the lemon peel powder using a Buchner funnel, and the obtained third extract is collected; (3) The three extracts were combined and subjected to rotary evaporation to obtain crude lemon essential oil. The rotary evaporation temperature was set to 60-90°C and the pressure was set to 0.1 MPa-0.2 MPa to obtain crude lemon essential oil. (4) The crude lemon essential oil is distilled and dried to obtain lemon essential oil. The drying temperature is set at 40-50°C. The dried essential oil is stored in a sealed, light-proof environment at a temperature of 10-15°C to maintain the stability of the lemon essential oil.

[0011] As a further embodiment of the present invention, the spearmint powder and lemon peel powder are filtered twice, the first filtration using a sieve with an aperture of 100 meshes, and the second filtration using a sieve with an aperture of 200 meshes.

[0012] As a further embodiment of the present invention, the method for preparing an essential oil deodorizing liquid based on natural plant extracts comprises the following steps: Step 1: Prepare raw materials, natural plant extract essential oil, low-carbon alcohol, spices, tea extract, polyethylene glycol and purified water; Step 2: Mix low-carbon alcohol and purified water at a temperature of 23-28°C to form a basic solution, and stir at a stirring speed of 15-25 r / min for 1-2 minutes. During the stirring process, slowly add natural plant extract essential oils and spices, and continue stirring for 3-5 minutes; then add tea extract and continue stirring until completely dissolved; Step 3: slowly add polyethylene glycol to the mixed solution, stirring while adding, the stirring speed is 15-20r / min, and the stirring time is 3-4min; after stirring, use a homogenizer to homogenize the mixed solution to eliminate particles or bubbles; Step 4: Filter the mixed liquid through a filter and use a vacuum degassing machine to remove bubbles in the mixed liquid; fill the filtered and degassed deodorized liquid into a pre-prepared container and package the filled deodorized liquid; perform quality inspection before or after packaging to ensure that the deodorized liquid meets relevant standards and requirements.

[0013] Positive beneficial effects An essential oil deodorizing liquid based on natural plant extracts and a preparation method thereof utilize natural plant extracts to effectively remove a variety of odors and can also remove harmful gases; an essential oil deodorizing liquid based on natural plant extracts and a preparation method thereof effectively improve the purity of natural plant extract essential oils by extracting natural plant extracts multiple times and optimizing the preparation process; the aroma of natural plant extract essential oils is soft, will not cause allergic reactions to the skin or respiratory system, and is safe and reliable to use; the deodorizing liquid is made of natural plant extracts, is non-toxic and harmless to the human body and the environment, has good biodegradability, will not cause long-term pollution to the environment after use, and is in line with the environmental protection concept of modern society. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work, among which: Figure 1 The present invention is a flow chart of a method for preparing an essential oil deodorizing liquid based on natural plant extracts; Figure 2 This is a schematic diagram of the proportion of raw materials of an essential oil deodorant based on natural plant extracts of the present invention; Figure 3 This is a schematic diagram of the proportion of natural plant extract essential oil raw materials in the essential oil deodorizing liquid based on natural plant extracts of the present invention. DETAILED DESCRIPTION

[0015] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0016] Example 1 Effects of different proportions of natural plant extract essential oils on deodorizing liquid The invention discloses an essential oil deodorizing liquid based on natural plant extracts, which adopts the following components: natural plant extract essential oils, low-carbon alcohols, spices, tea extracts, polyethylene glycol and purified water.

[0017] In the above embodiment, the natural plant extract essential oil includes 40 parts of spearmint essential oil, 30 parts of lemon essential oil, 10 parts of citrus essential oil, 10 parts of sandalwood essential oil and 10 parts of ylang-ylang essential oil.

[0018] In the above embodiment, the natural plant extract essential oils are added into the container in sequence according to the formula ratio, spearmint essential oil, lemon essential oil, citrus essential oil, sandalwood essential oil and ylang-ylang essential oil, stirred for 15 minutes at a stirring speed of 30 r / min, and after stirring, left to stand for 36 hours.

[0019] Comparative Example 1.1 This comparative example is substantially the same as Example 1, except that: 50 parts of spearmint essential oil, 20 parts of lemon essential oil, 10 parts of citrus essential oil, 10 parts of sandalwood essential oil and 10 parts of ylang-ylang essential oil.

[0020] Comparative Example 1.2 This comparative example is substantially the same as Example 1, except that: 30 parts of spearmint essential oil, 50 parts of lemon essential oil, 10 parts of citrus essential oil, 10 parts of sandalwood essential oil and 10 parts of ylang-ylang essential oil.

[0021] Comparative Example 1.3 This comparative example is substantially the same as Example 1, except that: 40 parts of spearmint essential oil, 30 parts of lemon essential oil, 20 parts of citrus essential oil, 10 parts of sandalwood essential oil and 10 parts of ylang-ylang essential oil.

[0022] Comparative Example 1.4 This comparative example is substantially the same as Example 1, except that: 40 parts of spearmint essential oil, 30 parts of lemon essential oil, 10 parts of citrus essential oil, 20 parts of sandalwood essential oil and 10 parts of ylang-ylang essential oil.

[0023] Comparative Example 1.5 This comparative example is substantially the same as Example 1, except that: 40 parts of spearmint essential oil, 30 parts of lemon essential oil, 10 parts of citrus essential oil, 10 parts of sandalwood essential oil and 20 parts of ylang-ylang essential oil.

[0024] The odor intensity table is shown in Table 1.

[0025] Table 1 Odor intensity table

[0026] The freshness level table is shown in Table 2.

[0027] Table 2 Freshness level table

[0028] In a specific embodiment, 30 professional odor assessors are invited, including 15 females and 15 males; the professional odor assessors smell the air treated with the deodorizing liquid and are required to describe the characteristics of the odor they smell, which at least include freshness, aroma persistence and odor intensity.

[0029] The experiment was conducted in a confined space at a temperature of 26°C and a relative humidity of 68%. The evaluators scored according to their feelings, and the scores were summarized and counted to calculate the comprehensive scores of each evaluation aspect. A negative oxygen ion detector was placed in the space to measure the concentration of negative oxygen ions in the air before and after treatment. The effects of different proportions of natural plant extract essential oils on deodorizing liquid are shown in Table 3.

[0030] Table 3 Effects of different proportions of natural plant extract essential oils on deodorizing liquid

[0031] It can be seen from Table 3 that when the spearmint essential oil exceeds 40 parts, although the aroma is fresh, the smell is too strong and makes people feel uncomfortable; when the lemon essential oil exceeds 30 parts, the aroma is relatively strong and the air quality is significantly reduced; when the citrus essential oil, sandalwood essential oil and ylang-ylang essential oil exceed 20 parts, the aroma is too strong, the freshness level is significantly reduced, and the concentration of negative oxygen ions is significantly reduced; it can be seen that when the spearmint essential oil: lemon essential oil: citrus essential oil: sandalwood essential oil: ylang-ylang essential oil is 4:3:1:1:1, there is no odor, the freshness level is the highest, and the deodorization rate is as high as 100%.

[0032] Example 2 Effect of Spearmint Essential Oil Purity on Deodorant Liquid In the above embodiment, the preparation process of the spearmint essential oil is: (1) selecting the above-ground parts of spearmint plants in the flowering period as raw materials, washing and drying the harvested spearmint raw materials, crushing the dried spearmint stems and leaves into spearmint powder, and filtering the powder; (2) Place the spearmint powder into a sealed extraction kettle and inject , adjust the temperature range to 40℃ and the pressure to 10MPa Reach supercritical state for essential oil extraction, the extraction time is 4.5h, Flow rate is 180kg / h; (3) When the extraction reaches the preset time, stop injecting , the pressure was adjusted to 1.0MPa, the temperature was adjusted to 50℃, and the supercritical Expand to the separation vessel, supercritical Loss of solvent power, thus releasing spearmint essential oil; (4) Open the collection valve to collect the spearmint essential oil, and then perform homogenization, filling and refrigeration to maintain the stability of the spearmint essential oil.

[0033] In the above embodiment, the water loss rate of the spearmint plant raw material during the drying process is 60%.

[0034] In the above embodiment, the preparation process of the spearmint essential oil is: (1) selecting the above-ground parts of spearmint plants in the flowering period as raw materials, washing and drying the harvested spearmint raw materials, crushing the dried spearmint stems and leaves into spearmint powder, and filtering the powder; (2) Place the spearmint powder into a sealed extraction kettle and inject , adjust the temperature range to 35℃, 40℃ and 45℃ and the pressure to 10MPa Reach supercritical state for essential oil extraction, the extraction time is 4.5h, Flow rates are 150kg / h, 180kg / h and 200kg / h; (3) When the extraction reaches the preset time, stop injecting , the pressure is adjusted to 0.5MPa~1.0MPa, the temperature is adjusted to 50℃, and the supercritical Expand to the separation vessel, supercritical Loss of solvent power, thus releasing spearmint essential oil; (4) Open the collection valve to collect the spearmint essential oil, and then perform homogenization, filling and refrigeration to maintain the stability of the spearmint essential oil.

[0035] In a specific embodiment, the closed extraction kettle is made of stainless steel, which has good sealing and high pressure resistance. Supply system: Included Tanks, compressors, coolers and flow meters to provide a steady flow of supercritical ; The temperature control system uses an electric heater and a cooling water circulation system to accurately control the temperature in the extraction kettle to 35°C, 40°C and 45°C; during the extraction process, The flow rate is 150kg / h, 180kg / h and 200kg / h; the separation kettle is made of stainless steel and equipped with a cooling device to prevent the essential oil from volatilizing. The collection system includes a collection valve, an oil storage tank and a vacuum pump to collect and store the separated spearmint essential oil. The environment should be kept clean during the collection process to avoid pollution. The purity of the spearmint essential oil after preparation is shown in Table 4.

[0036] Table 4 Purity of spearmint essential oil

[0037] From Table 4, we can see that when the temperature is 40℃, When the flow rate is 180kg / h, the concentration of spearmint essential oil is the highest.

[0038] In a specific embodiment, 30 professional odor assessors are invited, including 15 females and 15 males; the professional odor assessors smell the air treated with the deodorizing liquid and are required to describe the characteristics of the odor they smell, which at least include freshness, aroma persistence and odor intensity.

[0039] The experiment was conducted in a confined space at a temperature of 26°C and a relative humidity of 68%. The evaluators scored according to their feelings, and the scores were summarized and counted to calculate the comprehensive scores of each evaluation aspect. A negative oxygen ion detector was placed in the space to measure the concentration of negative oxygen ions in the air before and after treatment. The effect of the purity of spearmint essential oil on the deodorizing liquid is shown in Table 5.

[0040] Table 5 Effect of spearmint essential oil purity on deodorizing liquid

[0041] It can be seen from Table 5 that when the purity of spearmint essential oil is 99.9%, the deodorizing effect of the deodorizing liquid is the most obvious, the duration is the longest, the freshness reaches the highest level, the deodorizing rate is as high as 100%, and there is no odor in the air.

[0042] Example 3 Effect of lemon essential oil purity on deodorant liquid In the above embodiment, the preparation process of the lemon essential oil is: (1) Wash the lemons and peel off the lemon peels using a robot; crush the peeled lemon peels into powder, and filter them to obtain lemon peel powder; (2) Evenly mix petroleum ether and lemon peel powder for soaking and extraction; In the first soaking extraction stage, the ratio of lemon peel powder to petroleum ether is 35:1; the solution mixed with petroleum ether and lemon peel powder is placed in a constant temperature water bath, the temperature is set to 40°C, the pressure is 0.6MPa, and the soaking extraction time is 2.5h; after the soaking, the extract is separated from the lemon peel powder using a Buchner funnel to collect the first extract; In the second soaking and extraction stage, the lemon peel powder remaining after the first soaking was stirred to remove the petroleum ether attached to the surface, and petroleum ether was added to the treated lemon peel powder again, with the ratio of lemon peel powder to petroleum ether being 40:1; the temperature was set to 30°C, the pressure was 0.6MPa, and the soaking and extraction time was 1.5h; after the soaking was completed, the extract was separated from the lemon peel powder using a Buchner funnel, and the obtained second extract was collected; In the third soaking and extraction stage, the lemon peel powder remaining after the second soaking is stirred to remove the petroleum ether attached to the surface, and petroleum ether is added to the treated lemon peel powder again, and the ratio of lemon peel powder to petroleum ether is 40:1~50:1; the temperature is set to 30~35°C, the pressure is 0.8MPa~1.0MPa, and the soaking and extraction time is 0.5~1.0h; after the soaking is completed, the extract is separated from the lemon peel powder using a Buchner funnel, and the obtained third extract is collected; (3) The three extracts were combined and subjected to rotary evaporation to obtain crude lemon essential oil. The rotary evaporation temperature was set to 80°C and the pressure was set to 0.15 MPa to obtain crude lemon essential oil. (4) The crude lemon essential oil is distilled and dried to obtain lemon essential oil. The drying temperature is set to 45°C. The dried essential oil is stored in a sealed, light-proof environment at a temperature of 15°C to maintain the stability of the lemon essential oil.

[0043] In the above embodiment, the spearmint powder and lemon peel powder are filtered twice, the first filtration using a sieve with a pore size of 100 meshes, and the second filtration using a sieve with a pore size of 200 meshes.

[0044] Comparative Example 3.1 In the above embodiment, the preparation process of the lemon essential oil is: (1) Wash the lemons and peel off the lemon peels using a robot; crush the peeled lemon peels into powder, and filter them to obtain lemon peel powder; (2) Evenly mix petroleum ether and lemon peel powder for soaking and extraction; In the first soaking extraction stage, the ratio of lemon peel powder to petroleum ether is 35:1; the solution mixed with petroleum ether and lemon peel powder is placed in a constant temperature water bath, the temperature is set to 40°C, the pressure is 0.6MPa, and the soaking extraction time is 2.5h; after the soaking, the extract is separated from the lemon peel powder using a Buchner funnel to collect the first extract; In the second soaking and extraction stage, the lemon peel powder remaining after the first soaking was stirred to remove the petroleum ether attached to the surface, and petroleum ether was added to the treated lemon peel powder again, with the ratio of lemon peel powder to petroleum ether being 40:1; the temperature was set to 30°C, the pressure was 0.6MPa, and the soaking and extraction time was 1.5h; after the soaking was completed, the extract was separated from the lemon peel powder using a Buchner funnel, and the obtained second extract was collected; (3) The two extracts were combined and subjected to rotary evaporation to obtain crude lemon essential oil. The rotary evaporation temperature was set to 80°C and the pressure was set to 0.15 MPa to obtain crude lemon essential oil. (4) The crude lemon essential oil is distilled and dried to obtain lemon essential oil. The drying temperature is set to 45°C. The dried essential oil is stored in a sealed, light-proof environment at a temperature of 15°C to maintain the stability of the lemon essential oil.

[0045] Comparative Example 3.2 In the above embodiment, the preparation process of the lemon essential oil is: (1) Wash the lemons and peel off the lemon peels using a robot; crush the peeled lemon peels into powder, and filter them to obtain lemon peel powder; (2) Evenly mix petroleum ether and lemon peel powder for soaking and extraction; The ratio of lemon peel powder to petroleum ether is 35:1; the solution mixed with petroleum ether and lemon peel powder is placed in a constant temperature water bath, the temperature is set to 40°C, the pressure is 0.6MPa, and the soaking extraction time is 4h; after the soaking is completed, the extract is separated from the lemon peel powder using a Buchner funnel to collect the extract; (3) performing rotary evaporation to obtain crude lemon essential oil, wherein the rotary evaporation temperature is set to 80° C. and the pressure is set to 0.15 MPa to obtain crude lemon essential oil; (4) The crude lemon essential oil is distilled and dried to obtain lemon essential oil. The drying temperature is set to 45°C. The dried essential oil is stored in a sealed, light-proof environment at a temperature of 15°C to maintain the stability of the lemon essential oil.

[0046] In a specific embodiment, a constant temperature water bath is used to control the temperature during the soaking and extraction process to ensure that each extraction is performed at a set temperature; an electric stirrer is used to stir the lemon peel powder before soaking to remove petroleum ether attached to the surface and promote full contact between the solvent and the lemon peel powder; a rotary evaporator is used to rotary evaporate the combined extract to remove the solvent and obtain the lemon crude essential oil, and the rotary evaporator includes a heating system, a rotary evaporation bottle, a condenser and a receiving bottle. The rotary evaporation temperature is set to 80°C and the pressure is set to 0.15MPa.

[0047] Table 6 Purity of lemon essential oil

[0048] It can be seen from Table 6 that the essential oil components in lemon peel can be more fully extracted through three immersion extractions, and the temperature, pressure, time and solvent ratio of each immersion extraction condition are adjusted to meet the extraction needs at different stages. The three-stage extraction can also reduce the introduction of impurities and bad odors, and improve the purity and quality of the essential oil.

[0049] In a specific embodiment, 30 professional odor assessors are invited, including 15 females and 15 males; the professional odor assessors smell the air treated with the deodorizing liquid and are required to describe the characteristics of the odor they smell, which at least include freshness, aroma persistence and odor intensity.

[0050] The experiment was conducted in a confined space at a temperature of 26°C and a relative humidity of 68%. The evaluators scored according to their feelings, and the scores were summarized and counted to calculate the comprehensive scores of each evaluation aspect. A negative oxygen ion detector was placed in the space to measure the concentration of negative oxygen ions in the air before and after treatment. The effect of the purity of lemon essential oil on the deodorizing liquid is shown in Table 7.

[0051] Table 7 Effect of lemon essential oil purity on deodorizing liquid

[0052] It can be seen from Table 7 that when the purity of lemon essential oil is 99.9%, the deodorizing effect of the deodorizing liquid is the most obvious, the durability is the longest, the freshness reaches the highest level, the deodorizing rate is as high as 100%, and there is no odor in the air.

[0053] Example 4 A method for preparing an essential oil deodorizing liquid based on natural plant extracts comprises the following steps: Step 1: Prepare raw materials, natural plant extract essential oil, low-carbon alcohol, spices, tea extract, polyethylene glycol and purified water; Step 2: Mix low-carbon alcohol and purified water at 24°C, 26°C and 28°C to form a basic solution, and stir at a stirring speed of 15r / min, 20r / min and 25r / min for 2min, and slowly add natural plant extract essential oil and spices during stirring, and continue stirring for 5min; then add tea extract and continue stirring until completely dissolved; Step 3: slowly add polyethylene glycol to the mixed solution while stirring at a stirring speed of 15 r / min, 20 r / min and 25 r / min, respectively, and the stirring time is 4 min; after stirring, use a homogenizer to homogenize the mixed solution to eliminate particles or bubbles; Step 4: Filter the mixed liquid through a filter and use a vacuum degassing machine to remove bubbles in the mixed liquid; fill the filtered and degassed deodorized liquid into a pre-prepared container and package the filled deodorized liquid; perform quality inspection before or after packaging to ensure that the deodorized liquid meets relevant standards and requirements.

[0054] In a specific embodiment, a constant temperature water bath is used to control the temperature during the soaking and extraction process to ensure that each extraction is carried out at a set temperature, which is set to 24°C, 26°C and 28°C respectively; an electric stirrer is used for stirring, and the stirring speed is set to 15r / min, 20r / min and 25r / min for stirring. By adjusting the stirring speed, the mixing degree and uniformity of the raw materials can be controlled, thereby improving the quality and stability of the product. The effects of temperature and stirring speed on the deodorizing liquid are shown in Table 8.

[0055] Table 8 Effects of temperature and stirring speed on deodorizing liquid

[0056] It can be seen from Table 8 that when the temperature is and the stirring speed is, the deodorization rate is the highest and the deodorization lasts longer; when the temperature exceeds 26°C, it causes the ingredients to denature or degrade, destroying their deodorization ability and reducing the deodorization effect; the faster the stirring speed, the higher the deodorization rate and the longer the duration.

[0057] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that these specific embodiments are only illustrative, and those skilled in the art may omit, replace, and change the details of the above methods and systems in various ways without departing from the principles and essence of the present invention. For example, merging the above method steps so as to perform substantially the same functions in substantially the same manner to achieve substantially the same results is within the scope of the present invention. Therefore, the scope of the present invention is limited only by the appended claims.

Claims

1. An essential oil deodorant based on natural plant extracts, characterized in that: The essential oil deodorant adopts the following components: 60-70 parts of natural plant extract essential oil, 15-25 parts of low-carbon alcohol, 2-8 parts of spices, 2-8 parts of tea extract, 5-10 parts of polyethylene glycol and 20-30 parts of purified water.

2. The essential oil deodorant based on natural plant extracts according to claim 1, characterized in that: The natural plant extract essential oil comprises 30-50 parts of spearmint essential oil, 20-40 parts of lemon essential oil, 10-20 parts of citrus essential oil, 10-20 parts of sandalwood essential oil and 10-20 parts of ylang-ylang essential oil.

3. The essential oil deodorizing liquid based on natural plant extracts according to claim 2, characterized in that: The formula ratio of the natural plant extract essential oil is 4:3:1:1:1:

1. Spearmint essential oil, lemon essential oil, citrus essential oil, sandalwood essential oil and ylang-ylang essential oil are added into the container in sequence according to the formula ratio, and stirred for 10-15 minutes at a stirring speed of 20-30 r / min. After stirring, the container is left to stand for 24-36 hours.

4. The essential oil deodorizing liquid based on natural plant extracts according to claim 2, characterized in that: The preparation process of the spearmint essential oil is: (1) selecting the above-ground parts of spearmint plants in the flowering period as raw materials, washing and drying the harvested spearmint raw materials, crushing the dried spearmint stems and leaves into spearmint powder, and filtering the powder; (2) Place the spearmint powder into a sealed extraction kettle and inject , adjust the temperature range to 35~45℃ and the pressure to 8.1~11.3MPa Reach supercritical state for essential oil extraction, the extraction time is 2.5~4.5h, Flow rate is 150~200kg / h, Concentration is 95%~99%; (3) When the extraction reaches the preset time, stop injecting , the pressure is adjusted to 0.5MPa~1.0MPa, the temperature is adjusted to 45~50℃, and the supercritical Expand to the separation vessel, supercritical Loss of solvent power, thus releasing spearmint essential oil; (4) Open the collection valve to collect the spearmint essential oil, and then perform homogenization, filling and refrigeration to maintain the stability of the spearmint essential oil.

5. The essential oil deodorizing liquid based on natural plant extracts according to claim 4, characterized in that: The water loss rate of the spearmint plant raw material during the drying process is between 50% and 65%.

6. The essential oil deodorizing liquid based on natural plant extracts according to claim 2, characterized in that: The preparation process of the lemon essential oil is: (1) Wash the lemons and peel off the lemon peels using a robot; crush the peeled lemon peels into powder, and filter them to obtain lemon peel powder; (2) Evenly mix petroleum ether and lemon peel powder for soaking and extraction; In the first soaking extraction stage, the ratio of lemon peel powder to petroleum ether is 30:1-40:1; the solution mixed with petroleum ether and lemon peel powder is placed in a constant temperature water bath, the temperature is set to 35-45°C, the pressure is 0.5MPa-0.8MPa, and the soaking extraction time is 2.0-3.0h; after the soaking, the extract is separated from the lemon peel powder using a Buchner funnel to collect the first extract; In the second soaking and extraction stage, the lemon peel powder remaining after the first soaking is stirred to remove the petroleum ether attached to the surface, and petroleum ether is added to the treated lemon peel powder again, and the ratio of lemon peel powder to petroleum ether is 40:1~45:1; the temperature is set to 25~35°C, the pressure is 0.5MPa~0.7MPa, and the soaking and extraction time is 1.0~2.0h; after the soaking is completed, the extract is separated from the lemon peel powder using a Buchner funnel to collect the obtained second extract; In the third soaking and extraction stage, the lemon peel powder remaining after the second soaking is stirred to remove the petroleum ether attached to the surface, and petroleum ether is added to the treated lemon peel powder again, and the ratio of lemon peel powder to petroleum ether is 40:1~50:1; the temperature is set to 30~35°C, the pressure is 0.8MPa~1.0MPa, and the soaking and extraction time is 0.5~1.0h; after the soaking is completed, the extract is separated from the lemon peel powder using a Buchner funnel, and the obtained third extract is collected; (3) The three extracts were combined and subjected to rotary evaporation to obtain crude lemon essential oil. The rotary evaporation temperature was set to 60-90°C and the pressure was set to 0.1 MPa-0.2 MPa to obtain crude lemon essential oil. (4) The crude lemon essential oil is distilled and dried to obtain lemon essential oil. The drying temperature is set at 40-50°C. The dried essential oil is stored in a sealed, light-proof environment at a temperature of 10-15°C to maintain the stability of the lemon essential oil.

7. An essential oil deodorizing liquid based on natural plant extracts according to claim 4 or 6, characterized in that: The spearmint powder and lemon peel powder are filtered twice, the first filtering using a sieve with a pore size of 100 meshes, and the second filtering using a sieve with a pore size of 200 meshes.

8. A method for preparing the essential oil deodorizing liquid of natural plant extracts according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: Prepare raw materials, natural plant extract essential oil, low-carbon alcohol, spices, tea extract, polyethylene glycol and purified water; Step 2: Mix low-carbon alcohol and purified water at a temperature of 23-28°C to form a basic solution, and stir at a stirring speed of 15-25 r / min for 1-2 minutes. During the stirring process, slowly add natural plant extract essential oils and spices, and continue stirring for 3-5 minutes; then add tea extract and continue stirring until completely dissolved; Step 3: slowly add polyethylene glycol to the mixed solution, stirring while adding, the stirring speed is 15-20r / min, and the stirring time is 3-4min; after stirring, use a homogenizer to homogenize the mixed solution to eliminate particles or bubbles; Step 4: Filter the mixed liquid through a filter and use a vacuum degassing machine to remove bubbles in the mixed liquid; fill the filtered and degassed deodorized liquid into a pre-prepared container and package the filled deodorized liquid; perform quality inspection before or after packaging to ensure that the deodorized liquid meets relevant standards and requirements.

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