A sodium stearate-based oily deodorant gel containing tea polyphenols and a preparation method thereof

Abstract

The application relates to the technical field of air purification and odor control, and particularly discloses a sodium stearate-based oil-based odor-removing gel containing tea polyphenol and a preparation method thereof. The sodium stearate-based oil-based odor-removing gel contains the following components in parts by weight: limonene 75-85 parts, sodium stearate 2-4 parts, a solubilizing agent 4-6 parts, water 4-6 parts, tea polyphenol 2-4 parts and cyclohexyl acetate 0.5-1.5 parts. The gel network formed by the sodium stearate can reduce the migration and volatilization rate of limonene and odor-removing active components, and is beneficial to prolonging the effective action time of the product; the solubilizing agent and water are beneficial to improving the dispersion state of the tea polyphenol in the high-proportion limonene oil phase; the tea polyphenol and the cyclohexyl acetate jointly act, which is beneficial to improving the removal capacity for ammonia and amine alkaline odor, so that the gel stability, the slow-release performance and the odor-removing performance are considered.

Description

Technical Field

[0001] This application relates to the technical field of air purification and odor control, and in particular to a sodium stearate-based oily deodorizing gel containing tea polyphenols and its preparation method. Background Technology

[0002] With the increasing demand for air purification and odor control, odor-eliminating gels are widely used in indoor spaces, bathrooms, garbage disposal areas, and other environments prone to odors due to their ease of use and continuous release of odor-eliminating ingredients. Existing odor-eliminating gels mostly use hydrophilic gels such as carrageenan and gelatin as carriers, and water or alcohols as the main dispersion medium, often combined with odor-eliminating ingredients such as zinc ricinoleate. However, the moisture and volatile components in hydrophilic gels are easily lost quickly, resulting in a short effective lifespan in open environments. Simultaneously, some traditional odor-eliminating ingredients have limited ability to remove alkaline odors such as ammonia and trimethylamine, and the active ingredients are easily hydrolyzed and inactivated, leading to poor product stability and making it difficult to meet the requirements for use in environments with high concentrations or persistent odors. Therefore, there is an urgent need to provide an odor-eliminating gel with good odor removal effect and good stability. Summary of the Invention

[0003] In order to obtain an odor-removing gel with good deodorizing effect and good stability, this application provides a sodium stearate-based oily odor-removing gel containing tea polyphenols and its preparation method.

[0004] In the first aspect, this application provides a sodium stearate-based oily deodorizing gel containing tea polyphenols, which adopts the following technical solution: A sodium stearate-based oily deodorizing gel containing tea polyphenols, wherein the raw materials of the oily deodorizing gel include the following components in parts by weight: 75-85 parts limonene, 2-4 parts sodium stearate, 4-6 parts solubilizer, 4-6 parts water, 2-4 parts tea polyphenols, and 0.5-1.5 parts cyclohexyl acetate.

[0005] By adopting the above technical solution, using limonene as the main oil phase and sodium stearate as the oily gelling agent, along with solubilizers, water, tea polyphenols, and cyclohexyl acetate, a relatively stable oily gel system is formed. The gel network formed by sodium stearate reduces the migration and volatilization rates of limonene and the deodorizing active components, thus extending the effective action time of the product. Solubilizers and water improve the dispersion of tea polyphenols in the high-proportion limonene oil phase. The combined effect of tea polyphenols and cyclohexyl acetate enhances the removal capacity of ammonia and amine-based alkaline odors, thereby balancing gel stability, sustained-release performance, and deodorizing performance.

[0006] In one specific implementation, the weight ratio of the solubilizer to the water is 1:(0.8-1.2).

[0007] By adopting the above technical solution, the weight ratio of solubilizer to water is controlled at 1:(0.8~1.2), which can form a more suitable interface state between the oil phase and the aqueous active phase, improve the dispersion uniformity of tea polyphenols in the limonene system, and reduce oil-water separation caused by excessive water content and tea polyphenol precipitation caused by insufficient solubilizer. This is beneficial to balance the solubilization stability and gelation stability of the system.

[0008] In one specific implementation, the solubilizer comprises CM0016.

[0009] In one specific implementation, the solubilizer further includes one or both of CO-40 and AEO-9.

[0010] By adopting the above technical solution, one or two of CO-40 and AEO-9 can be further compounded on the basis of CM0016. The differences in molecular structure and interface regulation ability of different solubilizers can be utilized to further regulate the interface between the limonene oil phase, the aqueous phase and active ingredients such as tea polyphenols, thereby broadening the stable solubilization range of the system and improving the dispersion uniformity and storage stability of tea polyphenols and other deodorizing components.

[0011] In one specific implementation, the raw materials of the oily deodorizing gel also include one or two of persimmon tannin and zinc ricinoleate.

[0012] By adopting the above technical solution and further adding one or both of persimmon tannin and zinc ricinoleate, different types of deodorizing active components can be introduced into the deodorizing system based on tea polyphenols and cyclohexyl acetate. Among them, persimmon tannin can further enrich the plant polyphenol deodorizing components, and zinc ricinoleate can supplement different odor capture pathways, so that the composite deodorizing system has a wider range of action on alkaline odors such as ammonia and trimethylamine, and is conducive to improving the rapid deodorizing ability and continuous deodorizing performance.

[0013] Secondly, this application provides a method for preparing a sodium stearate-based oily deodorizing gel containing tea polyphenols, which employs the following technical solution: A method for preparing a sodium stearate-based oily deodorizing gel containing tea polyphenols includes the following steps: S1. Mix limonene, solubilizer, cyclohexyl acetate and water and stir until homogeneous to obtain a mixture; S2. Heat the mixture first, then add sodium stearate and stir until the sodium stearate dissolves to obtain a hot solution; S3. First, cool the hot solution, then add tea polyphenols and stir to evenly disperse the tea polyphenols in the hot solution to obtain the gel precursor solution. S4. Fill the gel precursor solution while it is still hot and cool it to room temperature to form an oily deodorizing gel.

[0014] By adopting the above technical solution, the oil phase and solubilization system are mixed sequentially, sodium stearate is dissolved at high temperature, tea polyphenols are added at low temperature, and gelation is achieved by cooling. This separates the dissolution and gelation process of sodium stearate from the loading process of tea polyphenols. On the one hand, it ensures that sodium stearate is fully dissolved and forms a relatively stable gel network during cooling. On the other hand, it helps to reduce the thermal impact of tea polyphenols and allows tea polyphenols to be more uniformly dispersed in the gel precursor solution, thereby improving the uniformity and stability of the final oily deodorizing gel.

[0015] In one specific implementation, step S2 is as follows: heating the mixture to 80-95°C, adding sodium stearate, and stirring at 80-95°C until the sodium stearate dissolves to obtain a hot solution.

[0016] By adopting the above technical solution, the dissolution temperature of sodium stearate is limited to 80-95℃, which can provide suitable thermal conditions for the full dissolution of sodium stearate in limonene and the solubilizing system, and reduce the problems of incomplete dissolution of sodium stearate, particles in gel or uneven gel formation caused by insufficient temperature.

[0017] In one specific implementation, step S3 is as follows: cooling the hot solution to 50-70°C, adding tea polyphenols and stirring to uniformly disperse the tea polyphenols in the hot solution, thereby obtaining a gel precursor solution.

[0018] By adopting the above technical solution, tea polyphenols are added after the hot solution has cooled to 50-70°C, thus avoiding the high-temperature dissolution stage of sodium stearate at 80-95°C. This allows the addition and uniform dispersion of tea polyphenols to be completed while ensuring that the system still has sufficient fluidity and dispersion ability. This helps to reduce the impact of high temperature on the activity and stability of tea polyphenols, and at the same time reduces the problem of increased system viscosity and difficulty in uniform dispersion of tea polyphenols due to excessively low addition temperature.

[0019] Thirdly, this application provides the application of a sodium stearate-based oily deodorizing gel containing tea polyphenols as described in claims in removing ammonia and alkaline odors.

[0020] By adopting the above technical solution, the oily deodorizing gel is used to remove ammonia and alkaline odors. It can continuously capture or remove odor substances by using tea polyphenols and cyclohexyl acetate, while using sodium stearate-based oily gel to slow-release active ingredients, so that the deodorizing effect can continue to be exerted for a long time.

[0021] In summary, this application includes at least one of the following beneficial technical effects: In this application, limonene is used as the main oil phase, sodium stearate is used as the oily gelling agent, and solubilizers, water, tea polyphenols, and cyclohexyl acetate are added to form a relatively stable oily gel system. Among them, the gel network formed by sodium stearate can reduce the migration and volatilization rate of limonene and deodorizing active components, which is beneficial to prolonging the effective action time of the product. Solubilizers and water are beneficial to improving the dispersion state of tea polyphenols in the high proportion of limonene oil phase. The combined effect of tea polyphenols and cyclohexyl acetate is beneficial to improving the removal capacity of ammonia and amine alkaline odors, thus taking into account gel stability, sustained release performance, and deodorizing performance. The method in this application involves sequentially mixing the oil phase and the solubilizing system, dissolving sodium stearate at high temperature, adding tea polyphenols at lower temperature, and cooling to form a gel. This separates the dissolution and gelation process of sodium stearate from the loading process of tea polyphenols. On the one hand, this ensures that sodium stearate is fully dissolved and forms a relatively stable gel network during cooling. On the other hand, it helps to reduce the thermal impact of tea polyphenols and allows tea polyphenols to be more uniformly dispersed in the gel precursor solution, thereby improving the uniformity and stability of the final oily deodorizing gel. In this application, an oily deodorizing gel is used to remove ammonia and alkaline odors. Tea polyphenols and cyclohexyl acetate can be used to continuously capture or remove odor substances, while sodium stearate-based oily gel can be used to slow-release active ingredients, so that the deodorizing effect can continue for a long time. Detailed Implementation

[0022] The present application will be further described in detail below with reference to the embodiments.

[0023] All raw materials used in the examples are commercially available. CM0016 and CM0024 were provided by Shanghai Xiaojianjing Fragrance Co., Ltd. CM0016's INCI is secondary alcohol polyether / hydrogenated castor oil polyethylene glycol-40 / propylene glycol, with a viscosity of 80-100 mPa·s; limonene is SUCORRICO D-limonene. Example

[0024] Example 1 Example 1 provides a method for preparing a sodium stearate-based oily deodorizing gel containing tea polyphenols, comprising the following steps: S1. Mix 750g limonene, 40g solubilizer, 5g cyclohexyl acetate and 40g water and stir until homogeneous to obtain a mixture; wherein the solubilizer is CM0016. S2. Heat the mixture to 80°C, then add 20g of sodium stearate and stir at 80°C until the sodium stearate dissolves to obtain a hot solution. S3. First, cool the hot solution to 50°C, then add 20g of tea polyphenols and stir to disperse the tea polyphenols in the hot solution to obtain a gel precursor solution; wherein the tea polyphenols are CM0024. S4. Fill the gel precursor solution while it is still hot and cool it to room temperature to form an oily deodorizing gel.

[0025] Example 2 Example 2 provides a method for preparing a sodium stearate-based oily deodorizing gel containing tea polyphenols, comprising the following steps: S1. Mix 800g limonene, 50g solubilizer, 10g cyclohexyl acetate and 50g water and stir until homogeneous to obtain a mixture; wherein the solubilizer is CM0016. S2. Heat the mixture to 80°C, then add 30g of sodium stearate and stir at 80°C until the sodium stearate dissolves to obtain a hot solution. S3. First, cool the hot solution to 50°C, then add 30g of tea polyphenols and stir to disperse the tea polyphenols in the hot solution to obtain a gel precursor solution; wherein the tea polyphenols are CM0024. S4. Fill the gel precursor solution while it is still hot and cool it to room temperature to form an oily deodorizing gel.

[0026] Example 3 Example 3 provides a method for preparing a sodium stearate-based oily deodorizing gel containing tea polyphenols, comprising the following steps: S1. Mix 850g limonene, 60g solubilizer, 15g cyclohexyl acetate and 60g water and stir until homogeneous to obtain a mixture; wherein the solubilizer is CM0016. S2. Heat the mixture to 80°C, then add 40g of sodium stearate and stir at 80°C until the sodium stearate dissolves to obtain a hot solution. S3. First, cool the hot solution to 50°C, then add 40g of tea polyphenols and stir to disperse the tea polyphenols in the hot solution to obtain a gel precursor solution; wherein the tea polyphenols are CM0024. S4. Fill the gel precursor solution while it is still hot and cool it to room temperature to form an oily deodorizing gel.

[0027] Example 4 The difference between Example 4 and Example 2 is that, in S1, 800g of limonene, 50g of solubilizer, 10g of cyclohexyl acetate and 40g of water are mixed and stirred evenly to obtain a mixture; wherein the solubilizer is CM0016; the remaining steps are the same as in Example 2.

[0028] Example 5 The difference between Example 5 and Example 2 is that, in S1, 800g of limonene, 50g of solubilizer, 10g of cyclohexyl acetate and 60g of water are mixed and stirred evenly to obtain a mixture; wherein the solubilizer is CM0016; the remaining steps are the same as in Example 2.

[0029] Example 6 The difference between Example 6 and Example 2 is that, in S2, the mixture is first heated to 87°C, then 30g of sodium stearate is added, and the mixture is stirred at 87°C until the sodium stearate dissolves to obtain a hot solution. S3. First, cool the hot solution to 60°C, then add 30g of tea polyphenols and stir to disperse the tea polyphenols in the hot solution to obtain a gel precursor solution; wherein the tea polyphenol is CM0024; the remaining steps are the same as in Example 2.

[0030] Example 7 The difference between Example 7 and Example 2 is that, in S2, the mixture is first heated to 95°C, then 30g of sodium stearate is added, and the mixture is stirred at 95°C until the sodium stearate dissolves to obtain a hot solution. S3. First, cool the hot solution to 70°C, then add 30g of tea polyphenols and stir to disperse the tea polyphenols in the hot solution to obtain a gel precursor solution; wherein the tea polyphenol is CM0024; the remaining steps are the same as in Example 2.

[0031] Example 8 The difference between Example 8 and Example 6 is that, in S1, 800g of limonene, 50g of solubilizer, 10g of cyclohexyl acetate and 50g of water are mixed and stirred evenly to obtain a mixture; wherein the solubilizer is a mixture of CM0016 and CO-40 in a weight ratio of 2.5:1.5; the remaining steps are the same as in Example 6.

[0032] Example 9 The difference between Example 9 and Example 6 is that, in S1, 800g of limonene, 50g of solubilizer, 10g of cyclohexyl acetate and 50g of water are mixed and stirred evenly to obtain a mixture; wherein the solubilizer is a mixture of CM0016 and AEO-9 in a weight ratio of 2.5:1; the remaining steps are the same as in Example 6.

[0033] Example 10 The difference between Example 10 and Example 6 is that, in S1, 800g of limonene, 50g of solubilizer, 10g of cyclohexyl acetate and 50g of water are mixed and stirred evenly to obtain a mixture; wherein the solubilizer is a mixture of CM0016, CO-40 and AEO-9 in a weight ratio of 2.5:1.5:1; the remaining steps are the same as in Example 6.

[0034] Example 11 The difference between Example 11 and Example 10 is that, in step S3, the hot solution is first cooled to 60°C, then 30g of tea polyphenols and 20g of zinc ricinoleate are added and stirred to obtain a gel precursor solution; wherein the tea polyphenols are CM0024; the remaining steps are the same as in Example 10.

[0035] Example 12 The difference between Example 12 and Example 10 is that, in S3, the hot solution is first cooled to 60°C, then 30g of tea polyphenols and 10g of persimmon tannins are added and stirred to obtain a gel precursor solution; wherein the tea polyphenols are CM0024; the remaining steps are the same as in Example 10.

[0036] Example 13 The difference between Example 13 and Example 10 is that, in S3, the hot solution is first cooled to 60°C, and then 30g of tea polyphenols, 20g of zinc ricinoleate, and 10g of persimmon tannin are added and stirred to obtain a gel precursor solution; wherein the tea polyphenols are CM0024; the remaining steps are the same as in Example 10. Comparative Example

[0037] Comparative Example 1 The difference between Comparative Example 1 and Example 1 is that the amount of limonene added in step S1 is 770g; sodium stearate is not added in step S2; the remaining steps are the same as in Example 1.

[0038] Comparative Example 2 The difference between Comparative Example 2 and Example 1 is that the amount of limonene added in step S1 is 790g, and the solubilizer CM0016 is not added; the remaining steps are the same as in Example 1.

[0039] Comparative Example 3 The difference between Comparative Example 3 and Example 1 is that the amount of limonene added in step S1 is 790g, and no water is added; the remaining steps are the same as in Example 1.

[0040] Comparative Example 4 The difference between Comparative Example 4 and Example 1 is that the amount of limonene added in step S1 is 770g; tea polyphenols are not added in step S3; the remaining steps are the same as in Example 1.

[0041] Comparative Example 5 The difference between Comparative Example 5 and Example 1 is that the amount of limonene added in step S1 is 755g, and cyclohexyl acetate is not added; the remaining steps are the same as in Example 1.

[0042] Comparative Example 6 The difference between Comparative Example 6 and Example 1 is that 20g of tea polyphenols is not added in step S3, but 20g of zinc ricinoleate is added; the remaining steps are the same as in Example 1.

[0043] Comparative Example 7 The difference between Comparative Example 7 and Example 1 is that the amount of limonene added in step S1 is 775g, and cyclohexyl acetate is not added; tea polyphenols are not added in step S3; the remaining steps are the same as in Example 1. Performance testing experiment

[0044] Slow-release performance: Referring to QB / T 4956-2016 "Solid Air Fresheners", 50.0g of the sample to be tested was weighed and placed in an open glass container of the same specifications. The container was then continuously placed in an environment with a temperature of 25±2℃, relative humidity of 50±10%, and no significant forced airflow. Before testing, the initial mass m0 of the sample was determined. Another identical sample was heated to constant weight, and its non-volatile residual mass m1 was determined. The difference between m0 and m1 was taken as the initial mass of the volatile component of the sample. The sample mass was weighed every 24 hours during the test. When the cumulative mass loss of the sample reached 90% of the initial volatile component mass, the corresponding placement time was recorded as the effective slow-release time, in days (d). A longer effective slow-release time indicates better slow-release performance of the sample.

[0045] Ammonia removal performance: A 1m [air purification system] was established according to QB / T 2761-2024 "Test Method for Purification Effect of Indoor Air Purification Products". 3 A closed test chamber was used, with a test temperature of 25±2℃ and a relative humidity of 50±10%. 50.0g of the sample to be tested was weighed and placed in an open container inside the test chamber. Ammonia gas was introduced into the chamber to bring the initial ammonia concentration to 150ppm. The circulating fan inside the chamber was turned on to ensure uniform gas mixing, then the fan was turned off and timing began. A blank test chamber without the sample was set up to correct for the natural decay of ammonia. After 1 hour of testing, the gas inside the chamber was collected, and the ammonia concentration was determined according to HJ 1076-2019 "Determination of Ammonia, Methylamine, Dimethylamine and Trimethylamine in Ambient Air by Ion Chromatography". The ammonia removal rate was calculated using the following formula: Ammonia Removal Rate / %=[1-(C t [ / C0) / (Cbt / Cb0)]×100% Where C0 is the initial concentration of ammonia in the sample test chamber; C t Cb0 represents the ammonia concentration in the sample test chamber after 1 hour; Cb0 represents the initial ammonia concentration in the blank test chamber; and Cbt represents the ammonia concentration in the blank test chamber after 1 hour. Each test group was performed in parallel three times, and the average value was taken as the final result.

[0046] Stability: Following QB / T 4956-2016 "Solid Air Fresheners", 50.0g of each sample was weighed and placed in a transparent, sealed container of the same specifications. The container was placed at 45±2℃ for 30 days, followed by a recovery period at 25±2℃ for 24 hours. The presence of oil-water separation, precipitation of active components, or significant morphological changes was observed. For samples exhibiting stratification, the height of the separated phase (h1) and the total sample height (h0) were measured, and the stratification rate was calculated using the formula: Stratification rate / % = h1 / h0 × 100%. A lower stratification rate indicates better stability of the gel system. Samples that did not form a gel were directly recorded as "not gelled". Simultaneously, each sample was sealed and placed at 25±2℃ for 6 months to observe for significant oil-water separation, precipitation, or gel collapse.

[0047] Alkaline odor removal performance: Trimethylamine was used as a representative amine alkaline odor-removing substance to evaluate the alkaline odor removal performance of the oil-based deodorizing gel. A 1m... 3 A closed test chamber was used, with a temperature of 25±2℃ and a relative humidity of 50±10%. 50.0g of the sample to be tested was weighed and placed in an open container, which was then placed in the test chamber. Trimethylamine was introduced into the chamber to achieve an initial concentration of 20ppm. After thorough mixing of the gas, timing was started, and a blank test without a sample was also conducted. After 1 hour of testing, the gas inside the chamber was collected, and the trimethylamine concentration was determined according to GB / T 14676-1993 "Determination of Trimethylamine in Air - Gas Chromatography". The trimethylamine removal rate was calculated using the blank correction method in the ammonia removal performance section. Each test was performed in triplicate, and the average value was taken.

[0048] Table 1 Performance test results of oil-based deodorizing gel

[0049] After being stored at room temperature for 6 months, no obvious oil-water separation, visible precipitation or gel collapse was observed in Examples 1 to 13; obvious oil-water separation and active ingredient precipitation were observed in Comparative Examples 2 and 3, respectively; and slight turbidity and a small amount of precipitation were observed in Comparative Example 6.

[0050] Combining Example 1 and Comparative Example 1, Comparative Example 1 did not include sodium stearate. Although the freshly prepared sample still had a high 1-hour ammonia removal rate, it could not form a stable oily gel, and its effective sustained-release time was only 28.4 days, far lower than the 60.8 days of Example 1. This indicates that the main role of sodium stearate is to form a gel network that can limit the rapid migration and volatilization of limonene and deodorizing active ingredients, thereby significantly extending the effective action time of the product.

[0051] Combining Examples 1, 2, and 3, without the addition of solubilizers or water, the accelerated storage stratification rate increased to 18.7% and 12.4%, respectively, while the 1-hour ammonia removal rate decreased to 84.5% and 88.2%, respectively, and the trimethylamine removal rate also decreased significantly. This indicates that for systems with limonene as the main continuous oil phase, both solubilizers and water participate in constructing an interfacial environment suitable for the uniform dispersion and stable loading of tea polyphenols.

[0052] Combining Examples 1, 4, 5, and 7, the 1-hour ammonia removal rate of Comparative Example 4 (without added tea polyphenols) decreased from 98.0% to 81.4%, while that of Comparative Example 5 (without added cyclohexyl acetate) decreased to 94.1%, and that of Comparative Example 7 (without both tea polyphenols and cyclohexyl acetate) was only 18.9%. This demonstrates that tea polyphenols are a key active ingredient in this application for enhancing the removal of ammonia and amine odors, and cyclohexyl acetate can further improve deodorization performance; the combined use of both achieves a better overall deodorization effect.

[0053] Combining Example 1 and Comparative Example 6, under the same conditions, when zinc ricinoleate completely replaced tea polyphenols, the ammonia removal rate decreased from 98.0% to 72.8% in 1 hour, and the trimethylamine removal rate decreased from 89.8% to 78.2%. Simultaneously, some stratification or precipitation occurred during accelerated storage of the samples. Therefore, in the high-proportion limonene-sodium stearate oily gel system of this application, using tea polyphenols as the main deodorizing active component can achieve better alkaline odor removal effect and system compatibility.

[0054] Based on Examples 1-3, it can be seen that when preparing oily deodorizing gel, following the raw material ratios in Examples 1-3 can form an oily gel system that combines sustained-release properties, ammonia removal properties, and storage stability.

[0055] Combining Examples 2, 4, and 5, when the weight ratio of solubilizer to water is 1:(0.8-1.2), all samples exhibit good gelling and deodorizing properties. Among them, Example 2 has an effective sustained-release time of 65.0 days and an accelerated stratification rate of only 0.4%, with overall performance superior to Examples 4 and 5, and the best comprehensive effect.

[0056] Combining Examples 2, 6, and 7, it is evident that dissolving sodium stearate within the temperature range of 80–95°C and adding tea polyphenols within the temperature range of 50–70°C can yield high-performance oily gels. Specifically, in Example 6, when sodium stearate was dissolved at 87°C and tea polyphenols were added at 60°C, the effective sustained-release time reached 66.4 days, the ammonia removal rate reached 98.9% in 1 hour, and the accelerated stratification rate decreased to 0.3%. The preparation conditions in Example 6 were the optimal.

[0057] Combining Examples 6 and 8-10, Example 10, using the composite solubilization system of CM0016, CO-40, and AEO-9, showed no measurable stratification under accelerated conditions, and the trimethylamine removal rate reached 94.7% in 1 hour. This indicates that the composite solubilization system is beneficial for improving the interfacial compatibility between water, tea polyphenols, and the continuous oil phase of limonene, and for enhancing the dispersion stability of the active components in the oily gel.

[0058] In conjunction with Examples 10-13, the addition of zinc ricinoleate and persimmon tannin to the composite solubilization system further enhances the alkaline odor removal capability of the oily gel. Specifically, Example 11, which added only zinc ricinoleate, and Example 12, which added only persimmon tannin, achieved trimethylamine removal rates of 97.1% and 97.8% within 1 hour, respectively. Example 13, which added both zinc ricinoleate and persimmon tannin, further improved these rates to 99.0%, with an ammonia removal rate of 99.6% within 1 hour. This demonstrates that by introducing different types of deodorizing active ingredients, the removal range of alkaline odors can be further broadened while maintaining system stability.

[0059] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A sodium stearate-based oily deodorizing gel containing tea polyphenols, characterized in that: The raw materials of the oily deodorizing gel include the following components in parts by weight: 75-85 parts limonene, 2-4 parts sodium stearate, 4-6 parts solubilizer, 4-6 parts water, 2-4 parts tea polyphenols, and 0.5-1.5 parts cyclohexyl acetate.

2. The sodium stearate-based oily deodorizing gel containing tea polyphenols according to claim 1, characterized in that: The weight ratio of the solubilizer to the water is 1:(0.8-1.2).

3. The sodium stearate-based oily deodorizing gel containing tea polyphenols according to claim 1, characterized in that: The solubilizer includes CM0016.

4. The sodium stearate-based oily deodorizing gel containing tea polyphenols according to claim 3, characterized in that: The solubilizer also includes one or both of CO-40 and AEO-9.

5. The sodium stearate-based oily deodorizing gel containing tea polyphenols according to claim 1, characterized in that: The raw materials of the oily deodorizing gel also include one or two of persimmon tannin and zinc ricinoleate.

6. A method for preparing a sodium stearate-based oily deodorizing gel containing tea polyphenols as described in any one of claims 1-5, characterized in that: Includes the following steps: S1. Mix limonene, solubilizer, cyclohexyl acetate and water and stir until homogeneous to obtain a mixture; S2. Heat the mixture first, then add sodium stearate and stir until the sodium stearate dissolves to obtain a hot solution; S3. First, cool the hot solution, then add tea polyphenols and stir to evenly disperse the tea polyphenols in the hot solution to obtain the gel precursor solution. S4. Fill the gel precursor solution while it is still hot and cool it to room temperature to form an oily deodorizing gel.

7. The method for preparing a sodium stearate-based oily deodorizing gel containing tea polyphenols according to claim 6, characterized in that: The S2 step is as follows: heat the mixture to 80-95°C, add sodium stearate, and stir at 80-95°C until the sodium stearate dissolves to obtain a hot solution.

8. The method for preparing a sodium stearate-based oily deodorizing gel containing tea polyphenols according to claim 6, characterized in that: The S3 step is as follows: cool the hot solution to 50-70°C, add tea polyphenols and stir to evenly disperse the tea polyphenols in the hot solution to obtain a gel precursor solution.

9. The application of a sodium stearate-based oily deodorizing gel containing tea polyphenols as described in any one of claims 1 to 5 in removing ammonia and alkaline odors.

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