Preparation method of ampelopsis grossedentata essential oil bath soap
By using high-frequency extraction to break down the cell walls of vine tea and then condensing it, combined with freeze-curing and step-by-step temperature-controlled oiling, a uniform and stable vine tea essential oil bath soap was prepared. This method solves the problems of insufficient performance and skin care effects of traditional bath soaps, and achieves efficient preservation of the active ingredients of vine tea and a good user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-03-04
- Publication Date
- 2026-04-07
AI Technical Summary
In the traditional bath soap manufacturing process, saturated and unsaturated fatty acids have difficulty reacting fully, and the natural plant ingredients have poor compatibility with the soap base. This results in uneven hardness of the finished soap, poor foam stability, an imbalance between cleaning power and gentleness, and difficulty in effectively retaining natural skin care ingredients, leading to insufficient performance and skin care effects.
High-frequency extraction is used to break down the cell walls of vine tea and then condense it. The vine tea extract is then frozen and mixed with sodium hydroxide. The oil is added in seven steps with controlled temperature. After adding vine tea essential oil, defoaming and solidification are carried out in a standardized manner to form a uniform and stable soap structure.
It effectively retains the active ingredients of vine tea, and the soap has a uniform and stable structure, combining good performance and skin care effects, thus solving the problems of insufficient performance and skin care effects of traditional bath soaps.
Smart Images
Figure CN121801653A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of daily chemical products, and more specifically, it relates to a method for preparing a vine tea essential oil bath soap. Background Technology
[0002] In the field of daily chemical product technology, with the continuous increase in consumer demand for natural and functional personal care products, the preparation technology of bath soap with plant active ingredients as the core has become a research hotspot. As a basic personal care product, the core function of bath soap has been upgraded from simple cleansing to a synergistic upgrade of cleansing-skin care-efficacy. Natural plant extracts, due to their gentleness, biocompatibility, and potential skin care activity, are widely used in the optimization of bath soap formulations.
[0003] Traditional bath soaps are mostly made by a single or simple mixture of animal and plant oils and lye through a one-time saponification reaction, supplemented with chemically synthesized fragrances, preservatives, and other additives. However, saturated and unsaturated fatty acids are difficult to fully react under the same saponification conditions, and natural plant ingredients are often simply added in the later stages of saponification, which can easily become inactive due to poor compatibility with the soap base. This results in uneven hardness, poor foam stability, an imbalance between cleansing power and gentleness, and difficulty in effectively retaining natural skin-care ingredients, leading to insufficient performance and skin-care effects. Summary of the Invention
[0004] To address the shortcomings of traditional bath soaps in terms of performance and skincare benefits, this application provides a method for preparing vine tea essential oil bath soap.
[0005] This application provides a method for preparing vine tea essential oil bath soap, which adopts the following technical solution: A method for preparing vine tea essential oil bath soap includes the following steps: Preparation of raw liquid: Take fresh vine tea, and extract it at a high frequency of 25-30kHz to break the vine tea cells and release cell sap. After the cell sap is condensed to 21-31℃, the raw vine tea liquid is collected and frozen to solidify it into vine tea liquid ice cubes. Mixed preparation: Take sodium hydroxide and vine tea concentrate ice cubes in a 1:1 mass ratio, mix and stir until sodium hydroxide is completely dissolved and ice cubes melt to form a mixed solution; Saponification with oil: After cooling the mixture to 35-40℃, add the oil in at least seven batches. The temperature of the mixture should be 15-17℃ for the first four batches and 20-22℃ for the last three batches. Stir the mixture after each batch until it becomes silky smooth to obtain a silky material. Defoaming molding: Add vine tea essential oil to the silky material, stir evenly, and then defoam. Put the defoamed material into the mold, let it stand and solidify, then demold and cut to obtain vine tea essential oil bath soap.
[0006] By employing the above-mentioned technical solution, high-frequency extraction is used to break down the cell walls of vine tea, combined with condensation, and the original liquid is simultaneously frozen and solidified. This approach not only fully releases the active substances within the cells but also reduces their loss. Furthermore, the proportionate mixing of sodium hydroxide and ice cubes in the original liquid slows down the exothermic dissolution of the alkali solution, preventing the destruction of active ingredients. Simultaneously, oil is added in seven stages with controlled temperature to adapt to the different oil properties and ensure full saponification. After adding essential oils, defoaming and solidification are standardized, allowing the bath soap to effectively retain the active ingredients of vine tea. The soap body has a uniform and stable structure, combining excellent performance and skincare effects, thus solving the problems of insufficient performance and skincare effects of traditional bath soaps.
[0007] Preferably, in the preparation of the stock solution: the amount of fresh vine tea used is 3 kg, the high-frequency extraction time is 90-100 minutes, and the temperature of the cell sap before condensation is 65-82℃.
[0008] By adopting the above technical solution, the high-frequency extraction time of fresh vine tea can ensure that the vine tea cells are fully broken down and release cell fluid, while avoiding insufficient cell fluid release due to too short an extraction time or degradation of active ingredients due to too long an extraction time. At the same time, the temperature before cell fluid condensation reduces the impact of temperature fluctuations on active ingredients, making the yield of vine tea concentrate stable and the retention rate of active ingredients high, laying a high-quality raw material foundation for the subsequent preparation of high-quality bath soap.
[0009] Preferably, in the preparation of the stock solution: the freezing and solidification temperature of the vine tea stock solution is -18℃ to -20℃, the freezing time is 4-6 hours, and the hardness of the solidified vine tea stock solution ice cube is not less than 2H.
[0010] By adopting the above technical solution, the vine tea extract is frozen and solidified, which not only ensures that the heat of the alkali solution is absorbed by the slow melting of ice when mixed with sodium hydroxide, but also ensures that the proportion of raw materials added during the mixing process is accurate due to the stable hardness. This makes the alkali solution and the extract mix evenly and gently, effectively protecting the active ingredients of the vine tea from damage and ensuring the stable start of the subsequent saponification reaction.
[0011] Preferably, in the mixing process, when the sodium hydroxide is mixed with the vine tea concentrate ice cubes, the sodium hydroxide is added to the vine tea concentrate ice cubes in three portions, with a 2-minute interval between each addition, and the stirring speed is 300 r / min.
[0012] By adopting the above technical solution, sodium hydroxide is added to the ice cubes in batches with intervals between each addition, and stirring is performed. This avoids the local heat release concentration and sudden temperature rise caused by adding sodium hydroxide all at once, and allows the sodium hydroxide to gradually dissolve and uniformly mix with the original solution through a stable stirring speed. This prevents the formation of undissolved alkali particles and makes the mixture of alkali solution and original solution homogeneous and stable.
[0013] Preferably, in the oil saponification step, the first four oil additions are: the first addition is wheat germ oil accounting for 10% of the total oil phase; the second addition is grape seed small molecule oil accounting for 10% of the total oil phase; the third addition is milk essential oil accounting for 5% of the total oil phase; and the fourth addition is green tea seed and green fruit small molecule oil accounting for 30% of the total oil phase. In addition, vine tea essential oil is added simultaneously during the first oil addition, and its dosage is 1% of the total material mass.
[0014] By adopting the above technical solution, the first four oil additions use wheat germ oil, grape seed oil, and other oils with limited proportions in the total oil phase, allowing oils rich in unsaturated fatty acids and functional components to be added in an orderly manner. At the same time, 1% of vine tea essential oil by mass is added during the first oil addition, allowing the essential oil to gradually integrate into the system with the saponification reaction. Therefore, the oils and alkali react fully, and the functional components and essential oils are evenly dispersed, which not only gives full play to the skin care synergy of various oils, but also lays the foundation for the activity and fragrance of the bath soap.
[0015] Preferably, in the oiling and saponification step, the stirring time after the first oiling is 3 hours, the stirring time after the second oiling is 2 hours, the stirring time after the third oiling is 30-40 minutes, and the stirring time after the fourth oiling is 2 hours, with a stirring speed of 350 r / min for all four oiling steps.
[0016] By adopting the above technical solution, the stirring time set for the first four oil additions, combined with a stable rotation speed, can not only adjust the stirring time according to the viscosity and reactivity of different oils to ensure that each oil and the mixture are fully in contact and complete saponification, but also avoid over-stirring which would cause temperature fluctuations in the system or under-stirring which would cause uneven mixing by maintaining a constant rotation speed, so that the material after the first four oil additions is in a stable and silky state.
[0017] Preferably, in the oil saponification step, the last three oil additions are: the fifth addition of mango kernel small molecule oil accounting for 10% of the total oil phase, the sixth addition of palm oil accounting for 10% of the total oil phase, and the seventh addition of coconut small molecule oil accounting for 20% of the total oil phase. The palm oil needs to be heated to 40°C to melt before being added.
[0018] By adopting the above technical solution, the subsequent three oil additions use mango kernel small molecule oil, palm oil, and coconut small molecule oil, and limit the proportion of each in the total oil phase, which is compatible with the previous saponification system. At the same time, the palm oil is preheated to 40°C to melt, which avoids the difficulty of dispersing after the solid palm oil is added. This allows the oils added in the subsequent three additions to be fully integrated with the silky materials in the previous process, and the saturated fatty acid oils are fully saponified, which further improves the stability and performance of the soap and makes the functions of various oils synergistic.
[0019] Preferably, in the oiling and saponification step, the stirring time after the fifth oiling is 20 minutes, the stirring time after the sixth oiling is 1 hour, and the stirring time after the seventh oiling is 1 hour, with a stirring speed of 400 r / min for each step.
[0020] By adopting the above technical solution, the stirring time and stirring speed are set separately for the last three oil additions. This not only adapts to the reaction characteristics of oils such as mango kernel small molecule oil and palm oil, ensuring that they quickly integrate with the system and complete saponification, but also promotes the dispersion of high-viscosity oils by using a slightly higher speed, avoiding oil stratification. This keeps the material in a uniform and silky state after the last three oil additions, ultimately forming a stable and uniform saponification system and ensuring consistent soap quality.
[0021] Preferably, in the degassing and molding step, the amount of added vine tea essential oil is 4% of the total material mass, the stirring time is 5-10 minutes, the rotation speed is 300 r / min, the degassing treatment is carried out using a degassing machine with a vacuum degree of -0.085 to -0.095 MPa, the evacuation time does not exceed 15 minutes, the pressure holding time is 20 minutes, and during the pressure holding process, when the pressure inside the degassing machine rises back to -0.07 MPa, intermittent evacuation is started, with each evacuation time being 1 minute, until there are no bubbles in the material.
[0022] By adopting the above technical solution, 4% of the total material mass of vine tea essential oil is added and stirred to ensure that the essential oil is evenly dispersed in the saponification system. At the same time, a defoaming machine is used to defoam according to the set vacuum degree, evacuation time and pressure holding intermittent evacuation process, which effectively removes air bubbles from the material, making the bath soap have a uniform and long-lasting fragrance and a dense soap structure without air holes, thus improving the product appearance and user experience.
[0023] Preferably, in the degassing molding step, the static curing is performed by static curing for 24 hours in an environment with a temperature of 22-25℃ and a relative humidity of 40%-50%.
[0024] By adopting the above technical solution, the material is allowed to stand and solidify for 24 hours in an environment of 22-25℃ and 40%-50% relative humidity. This provides a stable environment for the final completion of the saponification reaction, avoids slow solidification due to excessively low temperature or cracking of the soap due to excessively high temperature, and prevents the soap surface from losing water too quickly and forming cracks through appropriate humidity. This ensures that the soap solidifies evenly, and the surface is smooth and crack-free after molding, with the hardness and stability meeting the standards, thus guaranteeing the consistency and excellence of the finished product quality.
[0025] In summary, this application has the following beneficial effects: 1. This application utilizes high-frequency extraction to disrupt the cell walls of vine tea, combined with condensation, and simultaneously freezes and solidifies the original liquid. This process not only fully releases the active substances within the cells but also reduces their loss. Furthermore, the proportionate mixing of sodium hydroxide and ice cubes in the original liquid slows down the exothermic dissolution of the alkali solution, preventing the destruction of active ingredients. Additionally, oil is added in seven stages with controlled temperature to adapt to the different oil properties and ensure thorough saponification. Finally, the addition of essential oils and standardized defoaming and solidification processes ensure that the bath soap effectively retains the active ingredients of vine tea, resulting in a uniform and stable soap structure. This combination of excellent performance and skincare benefits solves the problems of insufficient performance and skincare effects in traditional bath soaps.
[0026] 2. In this application, the cell walls of vine tea are fully broken by high-frequency vibration, releasing active substances such as dihydromyricetin from the cells. At the same time, condensation is used to avoid the oxidation and degradation of active ingredients caused by high temperature. The freezing and solidification of the original solution and the gentle mixing with sodium hydroxide further reduce the damage of active ingredients under the action of alkaline solution, thereby increasing the retention rate of vine tea active ingredients in the bath soap.
[0027] 3. In this application, the first four saponification processes for oils with high unsaturated fatty acid content are carried out at low temperatures to prevent oil oxidation; the last three processes for oils with high saturated fatty acid content are carried out at medium temperatures to promote full reaction and form a uniform and stable saponification system; the defoaming machine removes bubbles from the soap liquid according to the set vacuum degree, evacuation time and intermittent evacuation parameters to avoid the formation of air holes in the soap body, so that the produced soap body has moderate hardness and dense structure, is not easy to break during use, and has rich and uniform foam, thus overcoming the problems of traditional bath soaps being easy to break and having insufficient foam. Attached Figure Description
[0028] Figure 1 This is a flowchart of a method for preparing a vine tea essential oil bath soap provided in this application. Detailed Implementation
[0029] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.
[0030] Technical concept: Vine tea is rich in active ingredients such as dihydromyricetin, which can enhance the skincare value of bath soaps. However, current technologies have significant limitations in incorporating vine tea into bath soap preparation. Traditional vine tea extraction relies on boiling or solvent soaking. High temperatures and organic solvents can destroy heat-sensitive active ingredients, and ordinary grinding cannot fully break down cell walls, resulting in low extraction rates. The saponification process involves a one-time reaction of mixed oils with lye. Different oils have significantly different saponification activities, easily leading to incomplete reactions or over-saponification. Furthermore, vine tea extracts are often simply added in the later stages of saponification, resulting in poor compatibility with soap bases and easy deactivation of active ingredients. Consequently, the functionality of vine tea cannot be effectively utilized in bath soaps.
[0031] Based on the aforementioned issues, the applicant, through extensive research, discovered that the key to preserving the active ingredients of vine tea and stabilizing soap performance lies in the synergistic adaptation of each process step with the characteristics of vine tea. Therefore, a targeted technical solution is proposed, employing high-frequency extraction at a specific frequency combined with precise condensation to reduce the loss of active ingredients while disrupting the cell walls of vine tea; staged temperature-controlled oil addition according to the characteristics of the oils to adapt to the saponification requirements of different oils; freezing the vine tea concentrate before mixing it with alkali solution to mitigate the impact of exothermic reactions on active ingredients; removing bubbles from the soap solution through a defoaming process; and enhancing compatibility with the soap base through a two-stage addition of vine tea essential oil. This ultimately forms a complete preparation method, solving the problems of low vine tea utilization efficiency and unstable soap performance in existing technologies.
[0032] To better understand the above technical solutions, the technical solutions of the present invention will be clearly and completely described below in conjunction with embodiments.
[0033] The following is a further description with reference to the embodiments: Example 1
[0034] Please see Figure 1 A method for preparing vine tea essential oil bath soap includes the following steps: Preparation of raw liquid: Fresh vine tea is taken and subjected to high-frequency extraction at 27.5kHz to break the vine tea cells and release cell sap. The cell sap is then condensed to 26℃ and collected to obtain vine tea raw liquid. The vine tea raw liquid is then frozen and solidified into vine tea raw liquid ice cubes. Mixed preparation: Take sodium hydroxide and vine tea concentrate ice cubes in a 1:1 mass ratio, mix and stir until sodium hydroxide is completely dissolved and ice cubes melt to form a mixed solution; Saponification with oil: After cooling the mixture to 37.5℃, add the oil in at least seven batches. The temperature of the mixture should be 16℃ for the first four batches and 21℃ for the last three batches. Stir the mixture after each batch until it becomes silky smooth to obtain a silky material. Defoaming molding: Add vine tea essential oil to the silky material, stir evenly, and then defoam. Put the defoamed material into the mold, let it stand and solidify, then demold and cut to obtain vine tea essential oil bath soap.
[0035] In the preparation of the stock solution: 3 kg of fresh vine tea was used, the high-frequency extraction time was 95 minutes, and the temperature of the cell sap before condensation was 73℃.
[0036] In the preparation of the original solution: the freezing temperature of the vine tea original solution is -19℃, the freezing time is 5 hours, and the hardness of the frozen vine tea original solution ice cube is not less than 2H.
[0037] In the mixing process, when mixing sodium hydroxide with vine tea concentrate ice cubes, sodium hydroxide is added to the vine tea concentrate ice cubes in three batches, with a 2-minute interval between each addition, and the stirring speed is 300 r / min.
[0038] In the saponification process, the first four oil additions are: the first addition is wheat germ oil, which accounts for 10% of the total oil phase; the second addition is grape seed oil, which accounts for 10% of the total oil phase; the third addition is milk oil, which accounts for 5% of the total oil phase; and the fourth addition is green tea seed and green fruit oil, which accounts for 30% of the total oil phase. In addition, vine tea oil is added simultaneously during the first oil addition, and its dosage is 1% of the total material mass.
[0039] In the saponification process, the stirring time after the first oil addition was 3 hours, the stirring time after the second oil addition was 2 hours, the stirring time after the third oil addition was 35 minutes, and the stirring time after the fourth oil addition was 2 hours. The stirring speed was 350 r / min for all four additions.
[0040] In the saponification process, the last three oil additions are: the fifth addition of mango kernel small molecule oil (10% of the total oil phase), the sixth addition of palm oil (10% of the total oil phase), and the seventh addition of coconut small molecule oil (20% of the total oil phase). The palm oil must be heated to 40°C to melt before being added.
[0041] During the saponification process, the stirring time after the fifth oil addition was 20 minutes, after the sixth oil addition was 1 hour, and after the seventh oil addition was 1 hour. The stirring speed was 400 r / min for all three oil additions.
[0042] In the degassing and molding process, the amount of vine tea essential oil added is 4% of the total material mass. The stirring time is 7.5 minutes, the speed is 300 r / min, and the degassing process is carried out using a degassing machine with a vacuum degree of -0.09 MPa. The evacuation time does not exceed 15 minutes, and the pressure holding time is 20 minutes. During the pressure holding process, when the pressure inside the degassing machine rises back to -0.07 MPa, intermittent evacuation is started, with each evacuation time lasting 1 minute, until there are no bubbles in the material.
[0043] In the degassing molding process, static curing is performed by allowing the material to stand and cure for 24 hours at a temperature of 23.5℃ and a relative humidity of 45%. Example 2
[0044] The difference between this embodiment and Embodiment 1 above is that: A method for preparing vine tea essential oil bath soap includes the following steps: Preparation of raw liquid: Fresh vine tea is taken and subjected to high-frequency extraction at 25kHz to break the vine tea cells and release cell sap. The cell sap is then condensed to 21℃ and collected to obtain vine tea raw liquid. The vine tea raw liquid is then frozen and solidified into vine tea raw liquid ice cubes. Mixed preparation: Take sodium hydroxide and vine tea concentrate ice cubes in a 1:1 mass ratio, mix and stir until sodium hydroxide is completely dissolved and ice cubes melt to form a mixed solution; Saponification with oil: After cooling the mixture to 35°C, add the oil in at least seven batches. The temperature of the mixture should be 15°C for the first four batches and 20°C for the last three batches. Stir the mixture after each batch until it becomes silky smooth to obtain a silky smooth material. Defoaming molding: Add vine tea essential oil to the silky material, stir evenly, and then defoam. Put the defoamed material into the mold, let it stand and solidify, then demold and cut to obtain vine tea essential oil bath soap. Example 3
[0045] The difference between this embodiment and Embodiment 1 above is that: A method for preparing vine tea essential oil bath soap includes the following steps: Preparation of raw liquid: Fresh vine tea is taken and subjected to high-frequency extraction at 30kHz to break the vine tea cells and release cell sap. The cell sap is then condensed to 31℃ and collected to obtain vine tea raw liquid. The vine tea raw liquid is then frozen and solidified into vine tea raw liquid ice cubes. Mixed preparation: Take sodium hydroxide and vine tea concentrate ice cubes in a 1:1 mass ratio, mix and stir until sodium hydroxide is completely dissolved and ice cubes melt to form a mixed solution; Saponification with oil: After cooling the mixture to 40°C, add the oil in at least seven batches. The temperature of the mixture should be 17°C for the first four batches and 22°C for the last three batches. Stir the mixture after each batch until it becomes silky smooth to obtain a silky smooth material. Defoaming molding: Add vine tea essential oil to the silky material, stir evenly, and then defoam. Put the defoamed material into the mold, let it stand and solidify, then demold and cut to obtain vine tea essential oil bath soap.
[0046] Comparative Example 1: The difference between this comparative example and Example 1 is as follows: Preparation of stock solution: Take 3kg of fresh vine tea, add 6L of deionized water and boil for 60 minutes. Filter to obtain vine tea extract, which can be used directly without freezing. Mixed preparation: 1.05 kg of sodium hydroxide was mixed with vine tea extract at a ratio of 1:1, stirred and dissolved, and then cooled to 40°C; Saponification with oil: Add 1 kg of total oil phase at once, in the same proportion of the seven oils as in Example 1, and stir at 25°C for 4 hours throughout the process; Defoaming and molding: Add 5% vine tea essential oil to the total materials, stir and let it defoam naturally, pour into the mold and let stand for 24 hours, then cut into 100g / pieces.
[0047] Comparative Example 2 The difference between this comparative example and Example 1 is as follows: Preparation of raw liquid: Take 3 kg of fresh vine tea, grind it into particles with a grinder to a particle size of 500 μm, add 3 L of deionized water and soak for 2 hours, filter to obtain vine tea extract, freeze at -19℃ for 5 hours to form ice blocks; The remaining steps are the same as in Example 1.
[0048] Comparative Example 3 The difference between this comparative example and Example 1 is as follows: Saponification with oil: Cool the mixture to 37.5℃ and add oil in seven batches, but control the temperature at 20℃ for the first four batches and at 25℃ for the last three batches. The remaining steps are the same as in Example 1.
[0049] Performance testing Dihydromyricetin retention rate: High performance liquid chromatography (HPLC) was used to determine the content of active ingredients in the finished product according to the "Quality Standard of Vine Tea", and the retention rate relative to the raw material was calculated.
[0050] Soap hardness (25℃): Shore hardness tester (Type A), take 3 points in the center area of the soap body for testing, and take the average value.
[0051] Foam height (25℃): Roche foam meter method, 500mL 0.2% soap solution, stir for 2 minutes and then measure the foam height.
[0052] pH value (25℃): pH meter, dissolve soap solution in deionized water (1% by mass), and measure after equilibration for 10 minutes.
[0053] Moisturizing rate (2 hours after use): Skin moisture meter was used to test the rate of change in skin moisture before and after use in volunteers.
[0054] Table 1
[0055]
[0056] According to Table 1, and comparing Examples 1-3 with Comparative Examples 1 and 2, it can be seen that the dihydromyricetin retention rate and moisture retention rate of Examples 1-3 are superior to those of Comparative Examples 1 and 2. Examples 1-3 employ a 25-30kHz high-frequency extraction process, which uses high-frequency vibration to directionally disrupt the cell walls of the vine tea, allowing the cell fluid rich in active ingredients to be fully released, while condensation reduces the loss of active ingredients. In contrast, Comparative Example 1 uses traditional boiling extraction, where high temperatures cause the active ingredients to volatilize and degrade. Comparative Example 2 uses grinding and soaking extraction, which only dissolves a small amount of extracellular active ingredients and cannot fully release intracellular substances. This demonstrates that high-frequency extraction can effectively preserve the active ingredients of vine tea.
[0057] According to Table 1, and comparing Examples 1-3 with Comparative Example 3, the soap hardness and foam height of Examples 1-3 are superior to those of Comparative Example 3. Examples 1-3 employed a step-by-step temperature-controlled oiling method based on the characteristics of the oils. The first four applications used low temperatures for oils with high unsaturated fatty acid content to prevent oxidation and rancidity, while the last three applications used medium temperatures for oils with high saturated fatty acid content to promote complete saponification and form a uniform and stable saponification system. In contrast, Comparative Example 3 had excessively high oiling temperatures, leading to oxidation of unsaturated fatty acids and incomplete saponification of saturated fatty acids, resulting in a loose soap structure. This demonstrates that step-by-step temperature-controlled oiling can improve the physical properties of the soap and the user experience.
[0058] According to Table 1, and comparing Examples 1-2-3, it can be seen that the performance of Examples 1-3 is at a superior and stable level. This is because Examples 1-3 used the median, lower limit, and upper limit of each parameter, and the various process steps were adapted to each other. This ensured the retention of active ingredients, the sufficiency of the saponification reaction, and the stability of the soap's properties, thus consistently achieving excellent product quality.
[0059] According to Table 1, and comparing Examples 1-3 with Comparative Example 1, the soaps of Examples 1-3 exhibit superior hardness, foam height, and pH mildness compared to Comparative Example 1. This is because Examples 1-3 used a freeze-curing process followed by mixing with sodium hydroxide, which slowed down the exothermic reaction during alkali dissolution, preventing localized high temperatures from affecting the saponification reaction. Combined with a defoaming process to remove air bubbles from the soap solution, this ensured a dense soap structure. In contrast, Comparative Example 1 did not freeze the extract and relied on natural defoaming, resulting in uneven saponification, residual air bubbles in the soap, and a loose structure. This demonstrates that the synergistic effect of freezing the extract and defoaming can improve the physical properties and mildness of the soap.
[0060] According to Table 1, and comparing Examples 1-3 with Comparative Examples 1-2-3, it can be seen that the overall performance of Examples 1-3 is superior to that of the comparative examples. Specifically, Examples 1-3 integrate high-frequency extraction, step-by-step temperature-controlled oiling, concentrate freezing, and defoaming processes. These processes work synergistically; high-frequency extraction ensures the source of active ingredients, step-by-step temperature control ensures sufficient saponification, and concentrate freezing and precise defoaming optimize the soap structure. Through the synergistic application of multiple core processes, the vine tea essential oil bath soap possesses excellent overall performance.
[0061] 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 method for preparing a vine tea essential oil bath soap, characterized in that, Includes the following steps: Preparation of raw liquid: Take fresh vine tea, and extract it at a high frequency of 25-30kHz to break the vine tea cells and release cell sap. After the cell sap is condensed to 21-31℃, the raw vine tea liquid is collected and frozen to solidify it into vine tea liquid ice cubes. Mixed preparation: Take sodium hydroxide and vine tea concentrate ice cubes in a 1:1 mass ratio, mix and stir until sodium hydroxide is completely dissolved and ice cubes melt to form a mixed solution; Saponification with oil: After cooling the mixture to 35-40℃, add the oil in at least seven batches. The temperature of the mixture should be 15-17℃ for the first four batches and 20-22℃ for the last three batches. Stir the mixture after each batch until it becomes silky smooth to obtain a silky material. Defoaming molding: Add vine tea essential oil to the silky material, stir evenly, and then defoam. Put the defoamed material into the mold, let it stand and solidify, then demold and cut to obtain vine tea essential oil bath soap.
2. The method for preparing a vine tea essential oil bath soap according to claim 1, characterized in that: In the preparation of the stock solution: the amount of fresh vine tea used is 3 kg, the high-frequency extraction time is 90-100 minutes, and the temperature of the cell sap before condensation is 65-82℃.
3. The method for preparing a vine tea essential oil bath soap according to claim 1, characterized in that: In the preparation of the original liquid: the freezing and solidification temperature of the vine tea original liquid is -18℃ to -20℃, the freezing time is 4-6 hours, and the hardness of the solidified vine tea original liquid ice cube is not less than 2H.
4. The method for preparing a vine tea essential oil bath soap according to claim 1, characterized in that: In the mixing process, when the sodium hydroxide is mixed with the vine tea concentrate ice cubes, the sodium hydroxide is added to the vine tea concentrate ice cubes in three portions, with a 2-minute interval between each addition, and the stirring speed is 300 r / min.
5. The method for preparing a vine tea essential oil bath soap according to claim 1, characterized in that: In the saponification process, the first four oil additions are: the first addition is wheat germ oil accounting for 10% of the total oil phase; the second addition is grape seed small molecule oil accounting for 10% of the total oil phase; the third addition is milk essential oil accounting for 5% of the total oil phase; and the fourth addition is green tea seed and green fruit small molecule oil accounting for 30% of the total oil phase. In addition, vine tea essential oil is added simultaneously during the first oil addition, and its dosage is 1% of the total material mass.
6. The method for preparing a vine tea essential oil bath soap according to claim 1, characterized in that: In the saponification process, the stirring time after the first oiling is 3 hours, after the second oiling is 2 hours, after the third oiling is 30-40 minutes, and after the fourth oiling is 2 hours. The stirring speed is 350 r / min for all four oiling processes.
7. The method for preparing a vine tea essential oil bath soap according to claim 1, characterized in that: In the saponification process, the last three oil additions are: the fifth addition of mango kernel small molecule oil accounting for 10% of the total oil phase, the sixth addition of palm oil accounting for 10% of the total oil phase, and the seventh addition of coconut small molecule oil accounting for 20% of the total oil phase. The palm oil needs to be heated to 40°C to melt before being added.
8. The method for preparing a vine tea essential oil bath soap according to claim 1, characterized in that: In the saponification process, the stirring time after the fifth oil addition is 20 minutes, the stirring time after the sixth oil addition is 1 hour, and the stirring time after the seventh oil addition is 1 hour. The stirring speed is 400 r / min for all three oil additions.
9. The method for preparing a vine tea essential oil bath soap according to claim 1, characterized in that: In the degassing and molding process, the amount of added vine tea essential oil is 4% of the total material mass. The stirring time is 5-10 minutes, the rotation speed is 300 r / min, and the degassing process is carried out using a degassing machine with a vacuum degree of -0.085 to -0.095 MPa. The evacuation time does not exceed 15 minutes, and the pressure holding time is 20 minutes. During the pressure holding process, when the pressure inside the degassing machine rises back to -0.07 MPa, intermittent evacuation is started, with each evacuation time lasting 1 minute, until there are no more air bubbles in the material.
10. The method for preparing a vine tea essential oil bath soap according to claim 1, characterized in that: In the degassing molding process, the static curing is performed by allowing the material to stand and cure for 24 hours in an environment with a temperature of 22-25℃ and a relative humidity of 40%-50%.