Composite plant deodorant and preparation method thereof

Abstract

The invention provides a composite plant deodorant and a preparation method thereof. The composite plant deodorant comprises the following components: a persimmon extract, a coptis chinensis extract, a propolis extract, cellulose nanocrystals, betaine, potassium carbonate and water. According to the invention, the three plant extracts are compounded according to a certain proportion, the cellulose nanocrystal is used as a carrier of the deodorant, the zwitterionic compound betaine is used as a surfactant, and a plurality of deodorization components are stably combined and have a synergistic effect, so that the prepared composite plant deodorant has the characteristics of wide deodorization range, high deodorization efficiency, natural property and environmental protection. The components of the composite deodorant are derived from natural plants, so that the composite deodorant is simple to produce, harmless to the environment and human body, and can be applied to various deodorization occasions.

Description

Technical Field

[0001] The invention belongs to the technical field of deodorant preparation, and particularly relates to a composite plant deodorant and a preparation method thereof. Background Art

[0002] With the development and progress of society, people have begun to pay attention to the impact of malodorous gases on the environment and human body. Malodor comes from a wide range of sources, including malodorous gases emitted from factory environments, unpleasant odors from toilets and other public places, and odors from human or pet excrement.

[0003] Deodorants can be divided into physical deodorants, chemical deodorants and plant deodorants, etc. They can inhibit and purify the main components that produce environmental odors, including ammonia, hydrogen sulfide, mercaptan, methyl mercaptan and other malodorous gases.

[0004] Physical deodorants mainly use adsorption and masking effects to achieve the purpose of deodorization; chemical deodorants achieve the purpose of deodorization by chemical reactions with odor molecules, but the effect is not long-lasting and is prone to secondary pollution; plant deodorants are mainly a type of deodorant with plant extracts as active ingredients. They have the advantage of being natural and harmless, but their efficiency is slow and their applicable places are limited. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, the object of the present invention is to provide a composite plant deodorant and a preparation method thereof.

[0006] The technical solution of the present invention is as follows:

[0007] The plant deodorant comprises persimmon extract, coptis root extract, propolis extract, cellulose nanocrystal, betaine, potassium carbonate and water.

[0008] Furthermore, the plant deodorant, by weight, comprises:

[0009] 10-20 parts of persimmon extract, 5-10 parts of coptis root extract, 5-10 parts of propolis extract, 0.2-2 parts of cellulose nanocrystals, 1-5 parts of betaine, 1-2 parts of potassium carbonate, and 55-75 parts of water.

[0010] Furthermore, the preparation method of the plant deodorant comprises the following steps:

[0011] S1. Under constant stirring, a certain concentration of cellulose nanocrystals is uniformly dispersed in water to prepare a 0.2-2% cellulose nanocrystal dispersion, the stirring speed is 300-800 r / min, and the stirring time is 10-20 min;

[0012] S2. Add 10-20% persimmon extract to the solution under constant stirring, continue stirring for 10-20 min, slowly add 1-2% potassium carbonate to the solution, adjust the pH of the solution to 8.5-9, and continue stirring for 20-30 min;

[0013] S3. Add 5-10% of Coptis chinensis extract to the solution under continuous stirring, and continue stirring for 10-30 minutes to make it evenly dispersed;

[0014] S4. While stirring continuously, continue to add 5-10% propolis extract to the solution and continue stirring for 30-60 minutes to make it evenly dispersed;

[0015] S5. Add 1-5% betaine to the mixed solution, and continue stirring for 10-30 minutes to obtain a uniformly mixed solution, thereby obtaining a composite plant deodorant.

[0016] Furthermore, the persimmon extract is a mixture of effective ingredients obtained by fermenting and extracting persimmon pulp and peel and undergoing multiple treatments; further, potassium carbonate is slowly added to the persimmon extract solution in multiple times to adjust the pH of the solution to 8.5-9.

[0017] Furthermore, the Coptidis rhizome extract is a mixture of active ingredients extracted from Coptidis rhizome.

[0018] Furthermore, the propolis extract is a mixture of substances secreted by plant resins; further, the propolis extract is water-soluble propolis extracted using water as solvent.

[0019] Furthermore, the cellulose nanocrystals are rod-shaped nanomaterials extracted from natural plant fiber raw materials, and the plant fibers used in the cellulose nanocrystals are one of coniferous wood fibers, broadleaf wood fibers and cotton fibers; further, the concentration of the cellulose nanocrystals is 6 to 10%, the length is less than 500 nm, and the diameter is 5 to 10 nm.

[0020] Furthermore, the betaine is a zwitterionic compound extracted from roots, stems, leaves and fruits of natural plants and is a surfactant.

[0021] Advantageous Effects of the Invention

[0022] 1. The present invention is compounded with three deodorizing materials from different natural plant sources. The main deodorizing components in persimmon extract are polyphenols, the main deodorizing components in coptis extract are alkaloid compounds, and the main deodorizing components in propolis extract are flavonoids. The condensed tannins contained in the persimmon extract have the characteristics of not losing the original acidity and reducing properties even when an alkaline aqueous solution is added. The present invention adds potassium carbonate to the persimmon extract solution to maintain the pH of the solution at 8.5-9, so that part of the hydroxide in the persimmon tannin is oxidized, and the oxidized part has oxidizing power, while the remaining part continues to show reducing power. Therefore, the deodorant of the present invention not only ensures that the original deodorizing effect of the persimmon extract remains unchanged, but also shows oxidizing power, and has a good removal effect on malodorous gases such as sulfur that are difficult to remove, further expanding the deodorizing range and enhancing the deodorizing effect. Various natural components extracted from plants can react with malodorous gases to produce odorless and harmless substances. There are also natural antibacterial and bactericidal components in the plant extract, which can inhibit the generation of malodorous gases from the root. A variety of natural and highly effective deodorizing ingredients work synergistically to not only remove malodorous gases that have already been produced, but also further inhibit the generation of malodorous gases through antibacterial effects. They can effectively remove various common malodorous gases, have a wide deodorizing range, good deodorizing effects, and are safe and environmentally friendly.

[0023] 2. The present invention uses cellulose nanocrystals from natural plants as carriers of deodorants. The small size and high specific surface area of ​​cellulose nanocrystals can combine plant extracts in the deodorant and stabilize the effective deodorizing and antibacterial substances in the compound deodorant. The use of the amphoteric surfactant betaine utilizes the adsorption effect between charges, further ensures the compatibility and stability of the deodorant solution during use, improves the effect of the deodorant in absorbing odors, exerts the overall deodorizing effect of the deodorant, and greatly improves the deodorizing efficiency. The composite plant deodorant prepared by the present invention has multiple substances that cooperate with each other and work together to make up for the shortcomings of single plant deodorants, such as poor deodorizing effect, short action time, and incomplete deodorizing. At the same time, it improves the safety of the deodorant. Different from general chemical deodorants, it has no burden on the use environment and is friendly to human contact.

[0024] 3. The raw materials used for the plant deodorant of the present invention are all derived from natural plant materials, and have the advantages of being natural and pollution-free, having good biodegradability, having a wide range of applications, being simple to produce, being convenient to use, being environmentally friendly, and not harmful to human health.

[0025] 4. The deodorant prepared by the present invention has a wide range of applications and can be directly sprayed into the environment, such as kitchens, toilets, factories, etc., to safely deodorize the environment; it can also be directly in contact with the human body or pets, and the natural ingredients are non-irritating to the skin, and can directly deodorize and inhibit bacteria; it can also be processed in items such as clothing and disposable sanitary products, and act on the odors emitted by sweat, blood, urine, feces, etc., to play a deodorizing and antibacterial role. DETAILED DESCRIPTION

[0026] The method described in the present invention is further illustrated by specific examples below, but it is not intended that the present invention is limited to these examples.

[0027] Example 1

[0028] Under continuous stirring, 14.29g of 7% cellulose nanocrystal solution was uniformly dispersed in 49.21g of water to prepare a cellulose nanocrystal dispersion, with a stirring speed of 500r / min and a stirring time of 10min. Under continuous stirring, 15g of persimmon extract was added to the cellulose nanocrystal dispersion and stirred continuously for 20min, 1.5g of potassium carbonate was slowly added to the solution in multiple times, the pH value of the solution was adjusted to 8.5, and stirring was continued for 20min; 10g of coptis extract was added to the solution and stirred continuously for 20min; 8g of propolis extract was added and stirred continuously for 60min; finally, 2g of betaine was added to the mixed solution and stirred continuously for 20min to make the components uniformly mixed, thus obtaining a composite plant deodorant.

[0029] Example 2

[0030] Under continuous stirring, 6.25 g of cellulose nanocrystal solution with a concentration of 8% is uniformly dispersed in 57.75 g of water to prepare a cellulose nanocrystal dispersion, with a stirring speed of 800 r / min and a stirring time of 20 min. Under continuous stirring, 20 g of persimmon extract is added to the cellulose nanocrystal dispersion and the stirring is continued for 30 min, 2 g of potassium carbonate is slowly added to the solution in multiple times, the pH value of the solution is adjusted to 8.5, and the stirring is continued for 30 min; 8 g of coptis extract is continuously added to the solution and the stirring is continued for 10 min; 5 g of propolis extract is added and the stirring is continued for 30 min; finally, 1 g of betaine is added to the mixed solution and the stirring is continued for 10 min to uniformly mix the components, thereby obtaining a composite plant deodorant.

[0031] Example 3

[0032] Under continuous stirring, 3.33 g of 6% cellulose nanocrystal solution was uniformly dispersed in 65.42 g of water to prepare a cellulose nanocrystal dispersion, with a stirring speed of 300 r / min and a stirring time of 30 min. Under continuous stirring, 12 g of persimmon extract was added to the cellulose nanocrystal dispersion and the mixture was stirred for 20 min, 1.25 g of potassium carbonate was slowly added to the solution in multiple times, the pH value of the solution was adjusted to 9, and the mixture was stirred for 30 min; 5 g of coptis extract was added to the solution and the mixture was stirred for 20 min; 10 g of propolis extract was added and the mixture was stirred for 80 min; finally, 3 g of betaine was added to the mixed solution and the mixture was stirred for 30 min to uniformly mix the components, thereby obtaining a composite plant deodorant.

[0033] Example 4

[0034] Under continuous stirring, 20g of 10% cellulose nanocrystal solution is uniformly dispersed in 49g of water to prepare a cellulose nanocrystal dispersion, with a stirring speed of 600r / min and a stirring time of 30min. Under continuous stirring, 10g of persimmon extract is added to the cellulose nanocrystal dispersion and the stirring is continued for 30min, 1g of potassium carbonate is slowly added to the solution in multiple times, the pH value of the solution is adjusted to 8.7, and the stirring is continued for 20min; 6g of coptis extract is continuously added to the solution and the stirring is continued for 10min; 9g of propolis extract is added and the stirring is continued for 90min; finally, 5g of betaine is added to the mixed solution and the stirring is continued for 20min to make the components uniformly mixed, thus obtaining a composite plant deodorant.

[0035] Example 5

[0036] Under continuous stirring, 16.67 g of cellulose nanocrystal solution with a concentration of 9% is uniformly dispersed in 43.53 g of water to prepare a cellulose nanocrystal dispersion, with a stirring speed of 400 r / min and a stirring time of 30 min. Under continuous stirring, 18 g of persimmon extract is added to the cellulose nanocrystal dispersion and the stirring is continued for 30 min, 1.8 g of potassium carbonate is slowly added to the solution in multiple times, the pH value of the solution is adjusted to 8.8, and the stirring is continued for 30 min; 9 g of coptis extract is continued to be added to the solution and the stirring is continued for 30 min; 7 g of propolis extract is added and the stirring is continued for 60 min; finally, 4 g of betaine is added to the mixed solution and the stirring is continued for 20 min to make the components uniformly mixed, thus obtaining a composite plant deodorant.

[0037] Deodorization effect experiment

[0038] Ammonia and hydrogen sulfide deodorization experiments were carried out on the composite plant deodorants prepared in Examples 1 to 5 and Comparative Examples 1 to 5, and the tests were conducted using the detection tube method, with manual samplers used for sampling and gas detection tubes used for detection.

[0039] Comparative Example 1 is a cellulose nanocrystal dispersion with a concentration of 2%;

[0040] Comparative Example 2 is a solution prepared by dissolving 20 g of persimmon extract in 80 g of water;

[0041] Comparative Example 3 is a solution prepared by dissolving 10 g of Coptis chinensis extract in 90 g of water;

[0042] Comparative Example 4 is a solution prepared by dissolving 10 g of propolis extract in 90 g of water;

[0043] Comparative Example 5 is a solution prepared by dissolving 20 g of persimmon extract, 10 g of coptis chinensis extract, and 10 g of propolis extract in 60 g of water.

[0044] Test method: prepare a 500mL conical flask, drop a small amount of fully diluted ammonia solution and sodium sulfide solution into the conical flask respectively, quickly cover the bottle mouth with plastic wrap, seal it with a rubber band, let it stand for 30 minutes, and use a gas detection tube to detect the initial gas concentration V in the conical flask. 0 , the initial concentration range of ammonia is 100±10ppm, and the initial concentration range of hydrogen sulfide is 10±2ppm; continue to drop 2g of the solutions prepared in Examples 1 to 5 and Comparative Examples 1 to 5 into the conical flask containing a certain concentration of malodorous gas, let it stand for 10 minutes, and use the gas detection tube to detect the gas concentration V in the conical flask again. 1 .

[0045] Calculation method of odor removal rate W: W = (V 0 -V 1 ) / V 0 ×100%.

[0046] Table 1 shows the deodorization test results of ammonia and hydrogen sulfide in the above embodiments and comparative examples.

[0047] Table 1 Deodorization test results

[0048]

[0049] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A composite plant deodorant, characterized in that: Contains the following ingredients: Persimmon extract, Coptis chinensis extract, propolis extract, cellulose nanocrystals, betaine, potassium carbonate, water.

2. The plant deodorant formulation according to claim 1, characterized in that: By weight, the invention comprises 10 to 20 parts of persimmon extract, 5 to 10 parts of coptis root extract, 5 to 10 parts of propolis extract, 0.2 to 2 parts of cellulose nanocrystals, 1 to 5 parts of betaine, 1 to 2 parts of potassium carbonate and 55 to 75 parts of water.

3. The plant deodorant formulation according to claim 1, characterized in that: The preparation method comprises the following steps: S1. Under constant stirring, uniformly dispersing cellulose nanocrystals in water to prepare a 0.2-2% cellulose nanocrystal dispersion; S2, adding 10-20% persimmon extract to the solution, stirring continuously, and slowly adding 1-2% potassium carbonate to the solution, adjusting the pH of the solution to 8.5-9, and stirring continuously to make it evenly dispersed; S3, adding 5-10% of Coptis chinensis extract to the solution, and continuously stirring to make it evenly dispersed; S4, adding 5-10% propolis extract to the solution and stirring continuously to make it evenly dispersed; S5. Add 1-5% betaine to the mixed solution and continue stirring to obtain a uniformly mixed solution, thereby obtaining a composite plant deodorant.

4. The plant deodorant formulation according to claim 1, characterized in that: The persimmon extract is a mixture of active ingredients extracted from persimmon pulp and peel; the coptis extract is a mixture of active ingredients extracted from coptis; and the propolis extract is a mixture of active ingredients secreted from plant resins.

5. The plant deodorant formulation according to claim 1, characterized in that: The plant fiber used in the cellulose nanocrystal is one of softwood fiber, hardwood fiber and cotton fiber.

6. The plant deodorant formulation according to claim 1, characterized in that: The betaine is a compound extracted from roots, stems, leaves and fruits of natural plants.

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