Efficient plant type sterilization deodorant and preparation method thereof

Abstract

The invention relates to the field of deodorants, and particularly discloses an efficient plant type sterilization deodorant and a preparation method thereof.The efficient plant type sterilization deodorant is prepared from, by weight, 18-30% of plant extracting solution, 9-15% of emulsifying agent and the balance deionized water. Adsorption of malodorous gas and activation of plant extraction active substances are enhanced through the emulsifier, and the deodorization speed of the plant type sterilization deodorant is increased; and in combination with an atomization technology, odor generated in places such as chemical plants, pharmaceutical factories, kitchen waste treatment plants, slaughter houses, bean product factories, farms, sewage treatment plants, waste transfer stations, waste treatment plants and the like can be effectively removed.

Description

Technical Field

[0001] The invention belongs to the field of deodorants, and in particular relates to a high-efficiency plant-based sterilizing deodorant and a preparation method thereof. Background Art

[0002] Malodorous gases refer to all gaseous substances that stimulate the olfactory organs and cause discomfort to people and damage the living environment. They are produced in chemical plants, pharmaceutical plants, food waste treatment plants, slaughterhouses, bean product factories, farms, sewage treatment plants, garbage transfer stations, garbage treatment plants and other places. These gases contain odor pollutants such as hydrogen sulfide, ammonia, sulfides, thiols, aromatic compounds, polyoxygen compounds, etc., which are highly volatile, hydrophilic and lipophilic. According to the "Analysis of National Malodor / Odor Pollution Complaints from 2018 to 2020" issued by my country's Ministry of Ecology and Environment, the national ecological environment complaint and reporting management platform received complaints about malodor / odor from 2018 to 2020, which is one of the most strongly complained environmental issues by the public.

[0003] At present, spraying deodorant is the most typical odor control measure. Deodorants are mainly divided into four categories: physical deodorant, chemical deodorant, biological deodorant and plant deodorant. Physical and chemical deodorants are mainly composed of activated carbon, zeolite, acidic and alkaline chemical substances, etc., with adsorption, neutralization reaction and oxidation reaction as the main mechanism of action; biological deodorant is mainly composed of microbial components, using microbial metabolism of odor components or biological enzyme catalysis to degrade odor components; plant deodorant is mainly composed of plant extracted oil, juice, liquid and other components, with surfactants, flavors and other auxiliary agents to make aqueous solution, among which the active ingredients are polyphenols, terpenes, organic acids and other substances, which can be formed into droplets with large specific surface area through atomization, and deodorize by adsorbing odor substances, using unsaturated chemical bonds to change the chemical structure of odor molecules, adsorption sedimentation and other principles. Among these four types of deodorants, plant deodorant has become the mainstream due to its wide source, low cost and low environmental requirements.

[0004] For example, patent CN 102698303 B discloses a plant-based composite deodorant, which uses extracts of aloe, hemp seeds, and sophora flavescens for deodorization; another example is patent CN 111557885 B, which uses Tribulus terrestris, Sanshozi, aloe, Xanthoceras sorbifolia shell, Acanthopanax senticosus, and mint as raw materials to make a deodorant with bactericidal effect. The main body of the above deodorants is plant extracts, but the deodorization efficiency of plant-based deodorants is affected by the contact time. As the contact time increases, the deodorization efficiency will increase, but it takes a certain amount of time to achieve the optimal removal effect. Therefore, there is an urgent need for a plant-based deodorant with obvious deodorization effect in a short time on the market. Summary of the invention

[0005] In order to overcome the shortcomings of the above-mentioned prior art, the present invention obtains a plant-based sterilizing deodorant with high deodorizing efficiency by strengthening the adsorption of malodorous gases and activating the active substances extracted from plants. The sterilizing deodorant can promote the decomposition of organic pollutants, reduce BOD / COD, purify water quality, eliminate environmental odors, and inhibit the proliferation of harmful pathogens. Combined with atomization technology, it can effectively remove odors generated in chemical plants, pharmaceutical factories, restaurant kitchen waste treatment plants, slaughterhouses, bean product factories, farms, sewage treatment plants, garbage transfer stations, garbage treatment plants and other places.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] On one hand, the present invention provides a high-efficiency plant-based sterilizing and deodorizing agent, which comprises the following raw materials, calculated by 100wt%, 18-30wt% of plant extract, 9-15wt% of emulsifier, and the balance of deionized water;

[0008] The steps for preparing the plant extract are as follows:

[0009] The plant is dried and crushed, sieved to obtain powder, the powder is refluxed with 70v% ethanol and an activator at 40-50°C for 1-3h, cooled to room temperature and filtered to obtain a plant extract.

[0010] The deodorant provided by the present invention can decompose and transform the odor source, effectively degrade the organic matter in the odor source, reduce the content of ammonia and nitrogen, and has significant deodorizing and antibacterial effects.

[0011] The present invention adds an activator when extracting plant active ingredients, and the obtained plant extract contains rich active groups such as aldehydes, ketones, terpenes, epoxy groups, etc., which can react with odor molecules such as ammonia and organic amines to eliminate odors by acid-base neutralization, and the alkaloids contained can react with acidic odor molecules such as hydrogen sulfide to deodorize; and can inhibit the growth of microorganisms and reduce the activity of microorganisms in decomposing organic matter, thereby reducing the generation and emission of odors.

[0012] In some embodiments, the plants include pine needles, mint, camphor leaves, eucalyptus leaves, and cloves.

[0013] The plant extracts can be selected from a wide range of plants, including plants from the Pinaceae, Lauraceae, Zingiberaceae, Cupressaceae, Rutaceae, Lamiaceae, Fabaceae, Oleaceae, Caprifoliaceae, Theaceae, Fabaceae, etc. The present invention combines several extracts to achieve a synergistic effect.

[0014] In some embodiments, the mass ratio of the powder, 70v% ethanol and the activator is 1:(10-16):(2-5).

[0015] The invention increases the content of active ingredients in the plant extract by controlling the mass ratio of powder, 70v% ethanol and activator.

[0016] In some embodiments, the preparation steps of the activator are as follows:

[0017] Prepare hydrochloric acid solution, add glutamic acid, stir at 50-60°C for 6-8h, distill under reduced pressure, wash with ethyl acetate, filter, and vacuum dry to constant weight to obtain the activator.

[0018] The activator raw material provided by the present invention is non-biotoxic, eco-friendly, and can improve the extraction rate of certain natural products. On the one hand, the activator will form a double liquid phase structure with 70v% ethanol after being dissolved in water, and shows a good effect in the extraction of active ingredients, and can improve the extraction efficiency and selectivity; on the other hand, the double liquid phase structure can reduce the extraction temperature, ensure the optimal leaching and activation of the effective ingredients, and save production costs at the same time; on the third hand, the activator is not easy to volatilize, and can improve the stability of the plant extract.

[0019] In some embodiments, the concentration of the hydrochloric acid solution is 9-14 wt %.

[0020] In some embodiments, the mass ratio of the hydrochloric acid solution to glutamic acid is 1:(0.1-0.3).

[0021] In the mixed solution formed by the activator and 70v% ethanol, the strong interaction between the carboxyl group of glutamic acid and the water molecules promotes the formation of a two-liquid phase structure. In the process of preparing the activator, the present invention controls the amount of glutamic acid to ensure that it exhibits suitable distribution behavior in the activator-70v% ethanol system, thereby improving the extraction of active ingredients.

[0022] In some embodiments, the preparation steps of the emulsifier are as follows:

[0023] Dissolve ethyleneamine and dodecanoic acid in DMF respectively to obtain two solutions, stir the two solutions at 80-90°C for 3-5h, and distill under reduced pressure to constant weight to obtain an emulsifier base, add rapeseed amide propyl dimethylamine thereto and mix evenly to obtain an emulsifier.

[0024] In some embodiments, the mass ratio of ethyleneamine to n-dodecanoic acid is 1:(0.32-0.62).

[0025] In some embodiments, the mass ratio of the emulsifier base to rapeseed amide propyl dimethylamine is 1:(0.2-0.5).

[0026] The present invention obtains a hydrophilic and lipophilic emulsifier matrix through the acid-amine condensation reaction of polyethylene polyamine and carboxylic acid. The emulsifier matrix can form emulsion particles in the deodorant to protect the activity of the active components of the plant extract. However, the formed emulsion is prone to stratification after being left standing for a long time. The present invention adds rapeseed oleamidopropyl dimethylamine to the emulsifier matrix to improve the stability of the emulsification performance of the emulsifier. The rapeseed oleamidopropyl dimethylamine contains a mixed carbon chain of more than C10, and the hydrophilic group has a greater polarity and is more likely to form hydrogen bonds in water to bring about a stable structure, so that the emulsifier can improve the solubility and distribution constant of the plant extract to odor molecules. Through an atomizing device, the odor molecules are firmly adsorbed on the surface of the droplets after contacting with the plant extract droplets, and then dissolved in the droplets, so that the odor disappears.

[0027] Another aspect of the present invention provides a method for preparing the above-mentioned high-efficiency plant-based sterilizing deodorant, which specifically comprises the following steps: emulsifying the plant extract and the emulsifier, and then adding deionized water and mixing evenly to obtain the above-mentioned high-efficiency plant-based sterilizing deodorant.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. The present invention provides an environmentally friendly and efficient plant-based sterilizing and deodorizing agent, the raw materials of which mainly include plant extracts and emulsifiers. The deodorizing agent accelerates the deodorizing speed by enhancing the adsorption of malodorous gases and activating the active substances extracted from plants. Combined with atomization technology, it can effectively remove odors generated in chemical plants, pharmaceutical plants, restaurant kitchen waste treatment plants, slaughterhouses, bean product factories, farms, sewage treatment plants, garbage transfer stations, garbage treatment plants and other places.

[0030] 2. The present invention improves the extraction efficiency and selectivity by adding an activator when extracting plant active ingredients. The activator can improve the extraction efficiency and selectivity; and can reduce the extraction temperature to ensure the optimal leaching and activation of the active ingredients, while saving production costs; in addition, it can also improve the stability of the plant extract, so that the obtained plant extract can inhibit the growth of microorganisms and reduce the generation and emission of odor.

[0031] 3. The emulsifier provided by the present invention can form emulsion particles in the deodorant to protect the activity of the active ingredients in the plant extract, and can also improve the solubility and distribution constant of the plant extract for odor molecules. Through the atomization equipment, the odor molecules are firmly adsorbed on the surface of the plant extract droplets after contact with the plant extract droplets, and then dissolved inside the droplets, causing the odor to disappear. DETAILED DESCRIPTION

[0032] The present invention will be described below in conjunction with specific embodiments. It should be noted that the following embodiments are examples of the present invention and are only used to illustrate the present invention, but not to limit the present invention. Other combinations and various modifications within the concept of the present invention may be performed without departing from the spirit or scope of the present invention.

[0033] It is worth noting that the raw materials used in the following preparation examples and embodiments are all from any commercially available manufacturers unless otherwise specified.

[0034] Preparation Example 1

[0035] The preparation steps of activator A are as follows:

[0036] Prepare a hydrochloric acid solution with a concentration of 12wt%, add glutamic acid at a mass ratio of 1:0.2, stir at 55°C for 7h, distill under reduced pressure, wash with ethyl acetate, filter, and vacuum dry to constant weight to obtain activator A.

[0037] Preparation Example 2

[0038] The preparation steps of activator B are as follows:

[0039] The difference between this preparation example and preparation example 1 is that the mass ratio of hydrochloric acid solution to glutamic acid is 1:0.08.

[0040] Preparation Example 3

[0041] The preparation steps of activator C are as follows:

[0042] The difference between this preparation example and preparation example 1 is that the mass ratio of hydrochloric acid solution to glutamic acid is 1:0.32.

[0043] Preparation Example 4

[0044] The preparation steps of plant extract A are as follows:

[0045] The plant was dried and crushed, and passed through a 40-mesh sieve to obtain a powder, and the powder was refluxed with 70v% ethanol and activator A at 45°C for 2h, and then filtered after cooling to room temperature to obtain plant extract A;

[0046] The mass ratio of powder, 70v% ethanol and activator is 1:13:4;

[0047] Based on 100 wt %, the plant includes 22 wt % pine needles, 35 wt % mint, 18 wt % camphor leaves, 15 wt % eucalyptus leaves and 10 wt % cloves.

[0048] Preparation Example 5

[0049] The preparation steps of plant extract B are as follows:

[0050] The difference between this preparation example and preparation example 4 is that activator A is replaced by an equal amount of activator B.

[0051] Preparation Example 6

[0052] The preparation steps of plant extract C are as follows:

[0053] The difference between this preparation example and preparation example 4 is that activator A is replaced by an equal amount of activator C.

[0054] Preparation Example 7

[0055] The preparation steps of plant extract D are as follows:

[0056] The plant was dried and crushed, and passed through a 40-mesh sieve to obtain a powder. The powder was refluxed with 70v% ethanol at 45°C for 2h, and then filtered after cooling to room temperature to obtain plant extract A;

[0057] Among them, the mass ratio of powder to 70v% ethanol is 1:17;

[0058] Based on 100 wt %, the plant includes 22 wt % pine needles, 35 wt % mint, 18 wt % camphor leaves, 15 wt % eucalyptus leaves and 10 wt % cloves.

[0059] Preparation Example 8

[0060] The preparation steps of emulsifier A are as follows:

[0061] 50 g of ethyleneamine was dissolved in 300 mL of DMF, and 25 g of dodecanoic acid was dissolved in 150 mL of DMF to obtain two solutions. The two solutions were stirred at 85° C. for 4 h, and distilled under reduced pressure to constant weight to obtain an emulsifier base. Rapeseed amide propyl dimethylamine was added thereto at a mass ratio of 1:0.35 and mixed evenly to obtain emulsifier A.

[0062] Preparation Example 9

[0063] The preparation steps of emulsifier B are as follows:

[0064] 50 g of ethyleneamine was dissolved in 300 mL of DMF, and 25 g of n-dodecanoic acid was dissolved in 150 mL of DMF to obtain two solutions. The two solutions were stirred at 85° C. for 4 h and distilled under reduced pressure to constant weight to obtain emulsifier B.

[0065] Preparation Example 10

[0066] The preparation steps of emulsifier C are as follows:

[0067] The difference between this preparation example and preparation example 8 is that 15 g of n-dodecanoic acid is used instead of 25 g of n-dodecanoic acid.

[0068] Preparation Example 11

[0069] The preparation steps of emulsifier D are as follows:

[0070] The difference between this preparation example and preparation example 8 is that 32 g of n-dodecanoic acid is used instead of 25 g of n-dodecanoic acid.

[0071] Example 1

[0072] A high-efficiency plant-based sterilizing and deodorizing agent comprises the following raw materials, calculated by 100wt%, including 25wt% of plant extract A, 12wt% of emulsifier A, and the balance being deionized water.

[0073] The preparation method of the high-efficiency plant-based sterilizing deodorant in this embodiment comprises the following steps:

[0074] The plant extract A and the emulsifier A are emulsified, and then deionized water is added and mixed evenly to obtain a high-efficiency plant-based sterilizing and deodorizing agent.

[0075] Example 2

[0076] A high-efficiency plant-based sterilizing and deodorizing agent comprises the following raw materials, calculated by 100wt%, including 18wt% of plant extract A, 9wt% of emulsifier A, and the balance being deionized water.

[0077] The preparation method of the high-efficiency plant-based sterilizing deodorant in this embodiment is the same as that in Example 1.

[0078] Example 3

[0079] A high-efficiency plant-based sterilizing and deodorizing agent comprises the following raw materials, calculated by 100wt%, including 30wt% of plant extract A, 15wt% of emulsifier A, and the balance of deionized water.

[0080] The preparation method of the high-efficiency plant-based sterilizing deodorant in this embodiment is the same as that in Example 1.

[0081] Example 4

[0082] This embodiment provides a highly efficient plant-based sterilizing deodorant and a preparation method thereof. The specific implementation method is the same as that of Example 1, except that the plant extract A in the raw material is replaced by an equal amount of plant extract B.

[0083] Example 5

[0084] This embodiment provides a highly efficient plant-based sterilizing deodorant and a preparation method thereof. The specific implementation method is the same as that of Example 1, except that the plant extract A in the raw material is replaced by an equal amount of plant extract C.

[0085] Example 6

[0086] This embodiment provides a highly efficient plant-based sterilizing deodorant and a preparation method thereof. The specific implementation method is the same as that of Example 1, except that the emulsifier A in the raw material is replaced by an equal amount of emulsifier B.

[0087] Example 7

[0088] This embodiment provides a highly efficient plant-based sterilizing deodorant and a preparation method thereof. The specific implementation method is the same as that of Example 1, except that the emulsifier A in the raw material is replaced by an equal amount of emulsifier C.

[0089] Example 8

[0090] This embodiment provides a highly efficient plant-based sterilizing deodorant and a preparation method thereof. The specific implementation method is the same as that of Example 1, except that the emulsifier A in the raw material is replaced by an equal amount of emulsifier D.

[0091] Comparative Example 1

[0092] This comparative example provides a highly efficient plant-based sterilizing deodorant and a preparation method thereof. The specific implementation manner is the same as that of Example 1, except that the plant extract A in the raw material is replaced by an equal amount of plant extract D.

[0093] Performance Testing:

[0094] 1. Antibacterial experiment:

[0095] This experiment was carried out in accordance with the quantitative antibacterial test of suspension in the standard WS / T 650-2019 "Antibacterial and Antibacterial Effect Evaluation Method". The strain was Staphylococcus aureus (ATCC 6538), and the evaluation was as follows: if the inhibition rate was ≥50% to 90%, it was judged to have an antibacterial effect; if the inhibition rate was ≥90%, it was judged to have a strong antibacterial effect.

[0096] 2. Deodorization test

[0097] This test refers to QB / T2761-2006 indoor air purification product purification effect determination method, selects hydrogen sulfide as the odor component, simulates the odor environment in the test chamber, sprays the deodorant in the test chamber in the form of atomization through a pressure nozzle, tests the degree of odor reduction in the test chamber after 10s and 30s, and obtains the deodorization rate of the deodorant. This method is consistent with the actual application of plant-based deodorants in open odor sources. The relevant conditions are as follows:

[0098] The volume of the experimental chamber is about 1.5m 3 (0.90m×0.90m×1.85m), atomizing nozzle (model SU16-SS, atomizing particle size range 5~50μm, American Spraying System); deodorant dosage 20mL / m 3; Deodorization rate % = 100% × [(initial concentration - concentration after reaction) / initial concentration].

[0099] The results are shown in Table 1.

[0100] Table 1 Performance test results

[0101]

[0102] It can be seen from the data in Table 1 that the plant-based sterilizing and deodorizing agents of Examples 1 to 3 have an antibacterial effect, and the deodorizing rates after 10 s and 30 s are similar, indicating that the plant-based sterilizing and deodorizing agents can exhibit a good deodorizing effect in a short time.

[0103] Compared with Example 1, the activators used in Examples 4 to 5 changed the ratio of hydrochloric acid solution to glutamic acid during preparation, affecting the two-liquid structure formed by the activator and 70v% ethanol, and further affecting the extraction of active substances, which is specifically manifested in the slowing down of the deodorization speed; combined with the data obtained in Comparative Example 1 without adding the activator, it can be seen that adding the activator when extracting plant active ingredients can effectively improve the deodorization speed and deodorization effect.

[0104] Compared with Example 1, in Example 6, no rapeseed amide propyl dimethylamine was added to the emulsifier used during preparation. Combined with the deodorization rates after 10s and 30s, it can be seen that if no rapeseed amide propyl dimethylamine is added to the emulsifier of the fresh deodorant, the deodorization speed will be slowed down. The possible reason is that rapeseed amide propyl dimethylamine can make the emulsifier increase the solubility and distribution constant of the plant extract for odor molecules; in Examples 7 to 8, the mass ratio of ethyleneamine to dodecanoic acid was changed when preparing the emulsifier, which also slowed down the deodorization speed.

[0105] The embodiments described above do not impose any form of limitation on the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A highly effective plant-based sterilizing deodorant, characterized in that: The composition comprises the following raw materials based on 100 wt % of the raw materials: 18-30 wt % of plant extract, 9-15 wt % of emulsifier, and the balance of deionized water; The steps for preparing the plant extract are as follows: The plant is dried and crushed, sieved to obtain powder, the powder is refluxed with 70v% ethanol and an activator at 40-50°C for 1-3h, cooled to room temperature and filtered to obtain a plant extract.

2. The high-efficiency plant-based sterilizing and deodorizing agent according to claim 1, characterized in that: The plants include pine needles, mint, camphor leaves, eucalyptus leaves and cloves.

3. The high-efficiency plant-based sterilizing and deodorizing agent according to claim 1, characterized in that: The mass ratio of the powder, 70v% ethanol and the activator is 1:(10-16):(2-5).

4. The high-efficiency plant-based sterilizing and deodorizing agent according to claim 1, characterized in that: The preparation steps of the activator are as follows: Prepare hydrochloric acid solution, add glutamic acid, stir at 50-60°C for 6-8h, distill under reduced pressure, wash with ethyl acetate, filter, and vacuum dry to constant weight to obtain the activator.

5. The high-efficiency plant-based sterilizing and deodorizing agent according to claim 4, characterized in that: The concentration of the hydrochloric acid solution is 9-14 wt %.

6. The high-efficiency plant-based sterilizing and deodorizing agent according to claim 5, characterized in that: The mass ratio of the hydrochloric acid solution to glutamic acid is 1:(0.1-0.3).

7. The high-efficiency plant-based sterilizing and deodorizing agent according to claim 1, characterized in that: The preparation steps of the emulsifier are as follows: Dissolve ethyleneamine and dodecanoic acid in DMF respectively to obtain two solutions, stir the two solutions at 80-90°C for 3-5h, and distill under reduced pressure to constant weight to obtain an emulsifier base, add rapeseed amide propyl dimethylamine thereto and mix evenly to obtain an emulsifier.

8. The high-efficiency plant-based sterilizing and deodorizing agent according to claim 7, characterized in that: The mass ratio of the ethyleneamine to n-dodecanoic acid is 1:(0.32-0.62).

9. The high-efficiency plant-based sterilizing and deodorizing agent according to claim 7, characterized in that: The mass ratio of the emulsifier base to rapeseed oleamidopropyl dimethylamine is 1:(0.2-0.5).

10. A method for preparing the high-efficiency plant-based sterilizing deodorant according to any one of claims 1 to 9, characterized in that: The method specifically comprises the following steps: emulsifying the plant extract and the emulsifier, and then adding deionized water and mixing them evenly to obtain the high-efficiency plant-based sterilizing and deodorizing agent.

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