Whitening anti-oxidation perfumed soap based on PQQ repairing function and preparation method of whitening anti-oxidation perfumed soap

Abstract

The invention relates to the technical field of daily chemical products, and discloses a whitening antioxidant soap based on a PQQ repair function, which comprises olive oil, coconut oil, avocado butter, sweet almond oil, PQQ and other component materials. The preparation method of the whitening anti-oxidation perfumed soap based on the PQQ repairing function comprises the following steps: S1, mixing grease, heating and stirring; s2, adding fatty acid and alkali, saponifying and cooling; s3, dissolving water-soluble components: dissolving glycerol, PQQ and the like, stirring and filtering; s4, adding the soap base into the solution, and uniformly stirring; s5, cooling, adding essence, and pouring into a mold for curing; and S6, ventilating and curing to finish the preparation of the soap. Through the technical scheme of compounding the PQQ and the vegetable oil, the antioxidant ability of the skin is enhanced, cell repair is promoted, the technical effects of reducing free radical damage and improving the skin barrier function are achieved, and the problems that a traditional antioxidant component is insufficient in permeability and not lasting in effect are effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of daily chemical products, and specifically to a whitening and antioxidant soap based on the repair function of PQQ and its preparation method. Background Art

[0002] In the prior art, handmade soaps and industrial soaps usually adopt a soap base system, supplemented with common antioxidant components such as plant extracts or vitamin E, aiming to meet basic cleaning and certain skin care needs. The oil formulations mainly use palm oil, coconut oil or animal fat, and some high-end products will also try to introduce vegetable oils such as olive oil and jojoba oil to improve the skin feel and foam fineness. In terms of process, the traditional soap-making process mostly relies on the curing process in the natural environment or simple cooling treatment to form the product structure. The overall process of such products is mature, can meet general daily use scenarios, and has a wide market application.

[0003] However, there are still certain limitations in the prior art in further pursuing high-order skin care effects and use durability. The commonly used plant antioxidant components or vitamin E are limited by their permeability and activity retention ability, and it is difficult to achieve deep antioxidant and metabolic optimization at the cellular level, with a short action cycle and being easily affected by the outside world and reducing the effect. At the same time, single or insufficiently optimized oil combinations are not ideal in terms of foam richness, rinsability and post-wash moisturizing feeling, and it is easy to have problems such as dry skin after cleaning or a strong residual feeling after short-term lubrication. In addition, the traditional normal temperature or natural curing process has insufficient precision in moisture control and shrinkage uniformity, and the soap is prone to cracks, softening or pasting during long-term storage or repeated use, affecting the product appearance and use experience. Therefore, how to optimize the antioxidant depth, balance of multi-component oil ratio and fine control of the curing process is the direction that needs to be further broken through in the current technological development. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a whitening and antioxidant soap based on the repair function of PQQ and its preparation method, which solves the problems of insufficient antioxidant depth, poor balance between cleaning and skin care, and poor curing stability of existing soaps.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: A whitening and antioxidant soap based on the repair function of PQQ and its preparation method, including the following component materials:

[0006] Olive oil: 2 parts - 5 parts;

[0007] Coconut oil: 1 part - 3 parts;

[0008] Jojoba oil: 1 part - 2 parts;

[0009] Shea butter: 1 part - 3 parts;

[0010] Sweet almond oil: 1 part - 2 parts;

[0011] Glycerol: 1 part - 3 parts;

[0012] Sorbitol: 0.5 part - 2 parts;

[0013] White sugar: 0.2 part - 1 part;

[0014] Amino acid: 0.2 part - 0.5 part;

[0015] PQQ: 0.01 part - 0.05 part;

[0016] Alkaline compound: 1 part - 3 parts;

[0017] Purified water: 5 parts - 15 parts;

[0018] Low - concentration solvent: 0.1 part - 0.5 part;

[0019] Fatty acid: 0.5 part - 2 parts;

[0020] Fragrance: 0.01 part - 0.05 part.

[0021] Furthermore, vegetable oils such as olive oil, coconut oil, jojoba oil, shea butter, and sweet almond oil provide rich unsaturated fatty acids, having good moisturizing and repairing effects. Among them, olive oil is rich in vitamin E, which can antioxidant and enhance the skin barrier; coconut oil has excellent detergency and foam stability; jojoba oil is similar to the sebum structure and can balance skin oil secretion; shea butter contains phytosterols, which can improve skin softness; sweet almond oil has soothing and moisturizing effects. Glycerol, sorbitol, and white sugar as humectants can absorb moisture and prevent skin dryness; amino acids improve foam fineness and enhance skin barrier function. PQQ, namely pyrroloquinoline quinone disodium salt, is a powerful antioxidant, which can reduce the damage of free radicals to the skin, and at the same time promote the energy metabolism of skin cells and improve skin repair ability. Alkaline compounds (such as sodium hydroxide or sodium carbonate) are used for saponification reaction to convert oils into soap bases and determine the pH value of the final product. Fatty acids (such as stearic acid) enhance foam stability and make the soap more mild and skin - friendly. Low - concentration solvents (such as ethanol or propylene glycol) assist in dissolving PQQ, improving its stability and penetration effect. Fragrance is used to improve the smell of the soap and enhance the user experience.

[0022] Preferably, the olive oil is virgin olive oil or refined olive oil, and the coconut oil is fractionated coconut oil or hydrogenated coconut oil.

[0023] Preferably, the fatty acids include at least one of stearic acid, palmitic acid, and lauric acid, and the amino acids include at least one of glutamic acid, serine, and glycine.

[0024] Preferably, the PQQ exists in the form of PQQ disodium salt, and the fragrance is selected from natural plant extracts, including at least one of lavender essential oil, tea tree essential oil and lemon essential oil.

[0025] Preferably, the low-concentration solvent is ethanol or propylene glycol, the alkaline compound is sodium hydroxide or sodium carbonate, and the conductivity of the purified water does not exceed 10 μS / cm.

[0026] A preparation method of a whitening and antioxidant soap based on the repair function of PQQ includes the following steps:

[0027] S1. Oil pretreatment: Pour olive oil, coconut oil, jojoba oil, shea butter and sweet almond oil into a stirring reaction kettle, mix them in proportion, heat and stir until in a uniform state to obtain an oil mixture;

[0028] S2. Soap base preparation: Continuously add fatty acid and alkaline compound to the oil mixture, raise the temperature of the stirring reaction kettle, carry out saponification reaction, and after the soap base is formed, cool the equipment;

[0029] S3. Dissolution of water-soluble components: Pour purified water into a new stirring reaction kettle, add glycerol, sorbitol and white sugar, stir until completely dissolved, and at the same time add an aqueous solution containing dissolved PQQ and a low-concentration solvent for mixing, and stir for 5 min - 10 min, and obtain a mixed solution after filtration;

[0030] S4. Mixing and homogenization: Slowly pour the mixed solution into the stirring reaction kettle where the soap base is stored, stir for 10 min - 15 min to obtain mixture A;

[0031] S5. Molding and cooling: When the temperature drops below 35°C, add fragrance to mixture A, stir well, pour it into a mold, and let it stand in an environment of 20°C - 25°C until completely solidified, and demold to obtain a preliminarily formed soap;

[0032] S6. Solidification and drying: Cure the preliminarily formed soap in a ventilated environment for 14 days - 30 days, and obtain the final soap product after determination.

[0033] Furthermore, in step S1, appropriate heating can reduce the viscosity of the oil, improve the efficiency of the subsequent saponification reaction, and at the same time ensure that the active ingredients in the vegetable oil will not be damaged by high temperature;

[0034] In step S2, the mechanism of the saponification reaction is an ester exchange reaction, that is, the ester group of the oil and fat is hydrolyzed in an alkaline environment to produce fatty acid salts (i.e., soap base) and glycerol. By controlling the reaction temperature and time, the texture of the soap base can be optimized, the cleaning ability can be improved, and the alkaline residue can be reduced to avoid irritation to the skin. Subsequently, the soap base needs to be cooled to prevent overreaction and ensure structural stability;

[0035] In step S3, to ensure the uniform dispersion of all water-soluble components, especially the dissolution of PQQ, an appropriate low-concentration solvent (such as ethanol or propylene glycol) can increase its solubility and enhance its antioxidant capacity. The filtration process helps to remove impurities that may affect the uniformity of the final product and improve the appearance and quality of the soap;

[0036] In step S4, it enhances the interaction between the soap base and the water-soluble components through high-intensity stirring of the reaction kettle to form a uniform mixing system;

[0037] In step S5, in order to control the cooling rate and avoid uneven internal stress caused by sudden temperature drop, which affects the texture of the soap. At the same time, adding fragrance under low-temperature conditions can prevent its volatilization and improve the fragrance persistence of the soap;

[0038] In step S6, through slow water evaporation, the structure of the soap is stabilized, the water content is reduced, the service life is improved, and cracks or deformation caused by rapid drying are avoided. Controlling the humidity at 40%-60% can prevent the soap body from shrinking excessively and improve the product quality.

[0039] Preferably, in step S1, the heating temperature of the oil mixture is controlled at 40°C - 45°C, and the stirring time is 20 min - 30 min;

[0040] In step S2, the saponification reaction temperature is controlled at 60°C - 75°C, the reaction time is 30 min - 60 min, and the formation of the soap base needs to be detected by pH to ensure that the pH value is between 9 and 11, and the cooling temperature is controlled below 40°C.

[0041] Preferably, in step S3, when mixing PQQ and the low-concentration solvent, the temperature is controlled at 40°C, the stirring time is 5 min - 10 min, the stirring speed is controlled at 2000 rpm - 5000 rpm, and filtration is carried out using a microporous filter with a pore size not exceeding 0.22 μm to remove insoluble substances.

[0042] Preferably, in step S4, the rotation speed of the stirring reaction kettle is 2000 rpm - 5000 rpm, the time is controlled at 10 min - 15 min, and the stirring environment is in a vacuum state;

[0043] In the step S5, the mold material includes silicone or stainless steel, and mild cooling is required before demolding. The range of the mild cooling is 0°C - 10°C.

[0044] Preferably, in the step S6, the relative humidity for curing and drying is controlled at 40% - 60%, and the determination is made by weight change or hardness test.

[0045] The present invention provides a whitening and antioxidant soap based on the repair function of PQQ and its preparation method.

[0046] It has the following beneficial effects:

[0047] 1. Through the technical solution of compounding PQQ with vegetable oil, the present invention enhances the antioxidant capacity of the skin and promotes cell repair. It achieves the technical effects of reducing free radical damage and improving the skin barrier function. Compared with the existing antioxidant solutions that only rely on vitamin E or plant extracts, the present invention optimizes skin metabolism at the cellular level through PQQ, a highly efficient coenzyme-level antioxidant component, and effectively solves the problems of insufficient penetration and short-lasting effect of traditional antioxidant components.

[0048] 2. Through the optimized combination of various vegetable oils such as olive oil, coconut oil, and jojoba oil, the soap not only retains good detergency but also reduces the irritation of the soap base to the skin and keeps the skin moist. It achieves the effects of deep cleaning without tightness and moisturizing without residue after washing. Compared with traditional soap base products that generally use single oil or animal fat, the multi-oil structure of the present invention makes the foam delicate and easy to rinse, avoiding the disadvantages of conventional soap base products that are prone to cause skin dryness and barrier damage.

[0049] 3. Through the process of constant temperature cooling + slow curing at low humidity, the internal structure of the soap is stable, reducing cracks and softening problems. It achieves the effects of no deformation during long-term storage and durability without gelatinization during use. Traditional handmade soaps or ordinary industrial soaps are prone to uneven shrinkage and short service life due to inaccurate moisture control during the curing process. The present invention effectively improves the hardness and durability of the soap through humidity control and slow cooling process, ensuring excellent long-term use experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a flow chart of the preparation method of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0051] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0052] Please refer to the attached Figure 1 , Example 1: High-efficiency antioxidant soap (enhancing skin repair ability)

[0053] Raw material ratio:

[0054] Olive oil: 4 parts;

[0055] Coconut oil: 2 parts;

[0056] Jojoba oil: 1 part;

[0057] Shea butter: 3 parts;

[0058] Sweet almond oil: 2 parts;

[0059] Glycerol: 3 parts;

[0060] Sorbitol: 1 part;

[0061] White sugar: 1 part;

[0062] Amino acid: 0.3 part;

[0063] PQQ: 0.03 part;

[0064] Alkaline compound (sodium hydroxide): 2 parts;

[0065] Purified water: 10 parts;

[0066] Low-concentration solvent (ethanol): 0.3 part;

[0067] Fatty acid (stearic acid): 1 part;

[0068] Fragrance: 0.03 part;

[0069] Process flow:

[0070] Pretreatment of oils and fats:

[0071] Mix coconut oil, olive oil, shea butter, jojoba oil, and sweet almond oil. Set the temperature to 42 °C and stir at low speed for 30 minutes to ensure uniform fusion.

[0072] Soap base preparation:

[0073] Slowly add stearic acid and sodium hydroxide solution to the oil mixture. Control the stirring rate at 300 rpm and maintain the reaction temperature at 65 °C. Saponification lasts for 50 minutes and then cools to 38 °C after completion.

[0074] Dissolution of PQQ:

[0075] Dissolve PQQ in 1% ethanol, stir for 8 minutes, and keep the temperature not exceeding 40 °C. Filter and set aside.

[0076] Dissolution of water-soluble components:

[0077] Heat pure water to 32°C, and sequentially add glycerol, sorbitol, and white sugar. Stir at a uniform speed of 1000 rpm for 15 minutes until completely dissolved. Finally, pour in the PQQ solution and mix well.

[0078] Homogeneous mixing:

[0079] Slowly pour the solution into the soap base mixture. Set the high-shear homogenizing mixer to 3500 rpm and mix for 12 minutes to ensure uniform dispersion.

[0080] Molding and cooling:

[0081] When the temperature drops to 34°C, add fragrance and stir for 3 minutes. Pour into a silicone mold and let it stand and cool and solidify for 48 hours.

[0082] Solidification and drying:

[0083] Naturally solidify in a ventilated environment for 21 days with the humidity controlled at 45% to ensure stable hardness and not easy to soften. Finally, a light yellow solid soap is obtained, which is delicate, smooth, and has a warm touch.

[0084] Example 2: Deep moisturizing soap (prevent skin dryness and maintain moisture)

[0085] Raw material ratio:

[0086] Olive oil: 3 parts;

[0087] Coconut oil: 2 parts;

[0088] Jojoba oil: 2 parts;

[0089] Shea butter: 2 parts;

[0090] Sweet almond oil: 2 parts;

[0091] Glycerol: 3 parts;

[0092] Sorbitol: 1.5 parts;

[0093] White sugar: 0.8 part;

[0094] Amino acid: 0.3 part;

[0095] PQQ: 0.02 part;

[0096] Alkaline compound (sodium carbonate + sodium hydroxide): 2 parts;

[0097] Pure water: 8 parts;

[0098] Low-concentration solvent (propylene glycol): 0.5 part;

[0099] Fatty acids (palmitic acid + stearic acid): 1 part;

[0100] Fragrance: 0.05 part;

[0101] Process flow:

[0102] Oil pretreatment:

[0103] Pour olive oil, jojoba oil, shea butter, sweet almond oil, and coconut oil into a stainless-steel reactor, stir at low speed for 25 minutes, and keep the temperature at 40 °C.

[0104] Soap base preparation:

[0105] Add fatty acids (palmitic acid + stearic acid) and alkaline compounds in sequence. Raise the temperature to 68 °C and continue stirring for 45 minutes. After the reaction ends, cool down to 36 °C and let it stand for 30 minutes.

[0106] Dissolution of water-soluble components:

[0107] Heat pure water to 30 °C, add glycerol, sorbitol, and white sugar, control the stirring speed at 1200 rpm, and stir for 12 minutes.

[0108] PQQ pre-dissolution:

[0109] Dissolve PQQ in propylene glycol, keep the temperature not exceeding 38 °C, stir for 7 minutes, filter and add it to the aqueous solution, and continue stirring for 5 minutes.

[0110] Mixing and homogenization:

[0111] Slowly pour the water-soluble components into the soap base, set the homogenizing mixer at 3800 rpm, and stir for 14 minutes to ensure uniformity.

[0112] Molding and cooling:

[0113] After the temperature drops to 33 °C, add fragrance and stir for 2 minutes. Pour it into a mold and let it stand for 48 hours to solidify.

[0114] Solidification and drying:

[0115] Place it in an environment with a humidity of 50%, slowly solidify for 28 days, and finally obtain a milky-white soap with a soft and delicate texture and dense foam.

[0116] Example 3: Long-acting skin cleansing soap (enhanced cleaning power, avoiding tightness)

[0117] Raw material ratio:

[0118] Olive oil: 2 parts;

[0119] Coconut oil: 3 parts;

[0120] Jojoba oil: 1 part;

[0121] Avocado fruit butter: 2 parts;

[0122] Sweet almond oil: 1 part;

[0123] Glycerol: 2 parts;

[0124] Sorbitol: 1 part;

[0125] White sugar: 0.5 part;

[0126] Amino acid: 0.4 part;

[0127] PQQ: 0.04 part;

[0128] Alkaline compound (sodium hydroxide + sodium carbonate): 2 parts;

[0129] Purified water: 12 parts;

[0130] Low-concentration solvent (ethanol): 0.3 part;

[0131] Fatty acid (coconut fatty acid + stearic acid): 1.5 parts;

[0132] Fragrance: 0.02 part;

[0133] Process flow:

[0134] Oil pretreatment:

[0135] Mix all the oils, heat to 43 °C, and stir at low speed for 28 minutes.

[0136] Soap base preparation:

[0137] Add fatty acid (coconut fatty acid + stearic acid) and alkaline compound in sequence, set the reaction temperature at 70 °C, the stirring rate at 320 rpm, and react for 50 minutes.

[0138] Dissolution of water-soluble components:

[0139] Heat the purified water to 33 °C, add glycerol, sorbitol, and white sugar, and stir for 10 minutes.

[0140] Dissolution of PQQ:

[0141] Dissolve PQQ in ethanol, keep the temperature not exceeding 39 °C, stir for 6 minutes, filter, and pour it into the aqueous solution.

[0142] Mixing and homogenization:

[0143] Perform high-shear homogenization stirring at 4000 rpm for 13 minutes to ensure the stability of the components.

[0144] Molding and cooling:

[0145] Cool down to 34°C, add fragrance, stir for 3 minutes, pour into a mold and let stand for 48 hours.

[0146] Curing and drying:

[0147] Control the humidity at 48%, ventilate and cure for 22 days, and finally obtain a light yellow soap with strong detergency and no tightness after rinsing.

[0148] Comparative Example 1: Ordinary soap base soap without using PQQ (comparison for Example 1)

[0149] Main differences:

[0150] This comparative example does not add PQQ, only adopts the formula of ordinary vegetable oil and soap base, and other components are the same as those in Example 1.

[0151] Process flow:

[0152] Oil pretreatment:

[0153] Adopt the same oil ratio (olive oil, coconut oil, jojoba oil, shea butter, sweet almond oil), heat to 42°C, and stir for 30 minutes.

[0154] Soap base preparation:

[0155] Add stearic acid and sodium hydroxide, keep the temperature at 65°C, stir for 50 minutes, and cool down to 38°C after the reaction ends.

[0156] Dissolution of water-soluble components:

[0157] Heat pure water to 32°C, add glycerol, sorbitol, and white sugar, stir for 15 minutes to ensure uniform dissolution. However, this comparative example does not add PQQ and low-concentration solvents, and the remaining steps are the same.

[0158] Mixing and homogenization:

[0159] Pour the aqueous solution into the soap base, set the high-shear homogenizing mixer at 3500 rpm, and stir for 12 minutes.

[0160] Molding and cooling:

[0161] Cool down to 34°C, add fragrance, stir for 3 minutes, pour into a mold and let stand for 48 hours to cure.

[0162] Curing and drying:

[0163] Place it in an environment with a humidity of 45%, ventilate and cure for 21 days, and finally obtain a soap with an appearance similar to that of Example 1.

[0164] Comparative Example 2: Use traditional antioxidant (vitamin E) instead of PQQ (comparison for Example 2)

[0165] Main differences:

[0166] In this comparative example, vitamin E (0.05%) is used as the antioxidant component instead of PQQ, and the other components are the same as those in Example 2.

[0167] Process flow:

[0168] Oil pretreatment:

[0169] Heat the oil mixture according to the oil ratio in Example 2 (olive oil, jojoba oil, shea butter, sweet almond oil, coconut oil) to 40 °C and stir for 25 minutes.

[0170] Soap base preparation:

[0171] Add fatty acids (palmitic acid + stearic acid) and alkaline compounds (sodium hydroxide + sodium carbonate), set the temperature to 68 °C, and stir for 45 minutes.

[0172] Dissolution of water-soluble components:

[0173] Heat pure water to 30 °C, add glycerol, sorbitol, and white sugar, stir for 12 minutes to obtain an oily solvent. In this comparative example, PQQ is not added, but vitamin E (0.05%) is added, and the remaining steps are the same.

[0174] Mixing and homogenization:

[0175] Pour the aqueous solution into the soap base, and stir at a high shear homogenization speed of 3800 rpm for 14 minutes.

[0176] Molding and cooling:

[0177] After the temperature drops to 33 °C, add essence, stir for 2 minutes, and pour into the mold and let stand for 48 hours to solidify.

[0178] Solidification and drying:

[0179] Naturally solidify for 28 days in an environment with a humidity of 50% to finally obtain the finished soap.

[0180] Comparative Example 3: Soap base soap without optimizing the solidification process (comparison with Example 3)

[0181] Main differences:

[0182] In this comparative example, the humidity is not controlled during the solidification process, and it is directly solidified at room temperature. The other formulations are the same as those in Example 3.

[0183] Process flow:

[0184] Oil pretreatment:

[0185] Adopt the oil ratio in Example 3 (olive oil, coconut oil, jojoba oil, shea butter, sweet almond oil), heat to 43 °C, and stir for 28 minutes.

[0186] Soap base preparation:

[0187] Add fatty acids (coconut fatty acid + stearic acid) and alkaline compounds (sodium hydroxide + sodium carbonate), set the temperature at 70°C, and stir for 50 minutes.

[0188] Dissolution of water-soluble components:

[0189] Heat pure water to 33°C, add glycerol, sorbitol, and white sugar, and stir for 10 minutes.

[0190] Dissolution of PQQ:

[0191] Dissolve PQQ in ethanol, stir for 6 minutes, filter and pour it into the aqueous solution, and continue to stir for 5 minutes.

[0192] Mixing and homogenization:

[0193] Set the high-shear homogenizing mixer at 4000 rpm and stir for 13 minutes.

[0194] Molding and cooling:

[0195] Cool down to 34°C, add essence, stir for 3 minutes, pour into the mold and let it stand for 48 hours.

[0196] Curing and drying:

[0197] Without humidity control, directly cure at room temperature (average humidity 65%-70%) for 20 days to finally obtain a soap with an appearance close to that of Example 3, but without the humidity control process.

[0198] Comparative experiment:

[0199] Experiment 1: Comparative experiment on soap hardness

[0200] Experiment description:

[0201] This experiment aims to compare the hardness differences between soaps cured with humidity control and naturally cured soaps to evaluate the improvement effect of the humidity control curing process on soap hardness. Hardness is an important performance index during the use of soap. High hardness can extend the service life of soap and is not easily softened or deformed due to changes in the external environment. By measuring the hardness of different soap samples, this experiment will verify the influence of the humidity control curing process on soap hardness.

[0202] Experiment steps:

[0203] Sample preparation:

[0204] Example 3 (humidity control curing): In the humidity control equipment, adjust the humidity to 55%-60% and the curing time to 30 days.

[0205] Comparative Example 3 (natural curing): Natural curing was carried out in a conventional environment (humidity of 60%-70%), and the curing time was 30 days.

[0206] Five experimental samples were prepared for each group, and their sizes and weights were made as consistent as possible.

[0207] Hardness measurement:

[0208] The hardness of each soap was measured using a hardness tester (50N load). Hardness measurements were taken for each sample at different time points (1st week, 2nd week, 3rd week, 4th week) to ensure the comparability of the experimental results.

[0209] During the measurement, the specific value of the surface hardness of the soap was recorded each time. The hardness test was carried out 4 times, once a week.

[0210] Data recording and comparison:

[0211] The hardness data of the soap was recorded weekly and compared with the hardness data of Comparative Example 3. By measuring the change in the hardness value, the effect of humidity-controlled curing on the hardness of the soap was evaluated.

[0212] Possible experimental data:

[0213] Table name: Experimental data on the comparison of soap hardness

[0214]

[0215] Experimental summary:

[0216] The hardness of the soap cured with humidity control was always higher than that of the naturally cured soap, and it had better stability. From the hardness data, it can be seen that the hardness of the soap cured with humidity control changed smoothly throughout the test period and was relatively high, indicating that the humidity-controlled curing process played an important role in the soap-making process. Humidity control ensured the uniform evaporation of water in the soap, making its intermolecular structure more compact, with higher hardness and stronger durability.

[0217] The mechanism for this increase in hardness can be attributed to the effect of uniform water evaporation. During the humidity control process, water was gradually released, avoiding cracks and softening on the soap surface caused by excessive water evaporation. Compared with natural curing, humidity control ensured that the molecular chains of the soap cured in a more stable environment, avoiding the loosening of the internal molecular structure caused by uneven water distribution. Therefore, the humidity control process can effectively improve the hardness and stability of the soap, extend its service life, and provide a better user experience.

[0218] Experiment 2: Comparative experiment on the foam duration and cleaning power of soap

[0219] Experiment description:

[0220] The purpose of this experiment is to compare the performance of humidity-controlled cured soap and naturally cured soap in terms of foam duration and cleaning power. The persistence of foam directly affects the usage effect of soap, especially the cleaning power. Fine foam that lasts for a longer time can provide a better cleaning experience. This experiment verifies the improvement effect of the humidity-controlled curing process on the performance of soap by testing the foam duration and cleaning effect.

[0221] Experimental procedures:

[0222] Sample preparation:

[0223] Example 1 (humidity-controlled curing): Cure the soap in a humidity-controlled environment with a humidity setting of 55%-60% and a curing time of 30 days.

[0224] Comparative example 1 (natural curing): Cure the soap in a conventional environment with a humidity of 60%-70% and a curing time of 30 days.

[0225] Prepare 5 soap samples for each group, ensuring that the sample size and weight are consistent.

[0226] Foam duration test:

[0227] Immerse the soap in warm water and observe and record the foam generation time and duration.

[0228] When testing, record the fineness of the foam, the amount of foam, and the duration of the foam.

[0229] Cleaning power test:

[0230] Use the standardized wiping method (10-minute wiping) to test the cleaning power of the soap. Select a surface with stains for cleaning, record the cleaning effect after each wipe, and evaluate the decontamination rate of the soap.

[0231] Compare the relationship between the foam quality and the cleaning effect to ensure the connection between the foam persistence and the cleaning power.

[0232] Data recording and comparison:

[0233] Record the foam duration and cleaning power test results of the soaps in Example 1 and Comparative example 1, and compare the performance differences during their use.

[0234] Possible experimental data:

[0235] Table name: Experimental data of foam duration and cleaning power

[0236] Sample Foam duration (minutes) Cleaning power (detergency rate %) Example 1 18 85 Comparative Example 1 14 78 Example 1 20 88 Comparative Example 1 15 72 Example 1 19 84 Comparative Example 1 16 76 Example 1 21 87 Comparative Example 1 13 70 Example 1 20 85 Comparative Example 1 14 74

[0237] Experimental summary:

[0238] From the experimental data, it can be seen that the foam duration of Example 1 is longer, and the detergency is significantly better than that of Comparative Example 1. This indicates that the humidity-controlled curing process significantly improves the foam quality and cleaning effect of the soap. The soap cured with humidity control has finer and more persistent foam during use, which can last longer and provide a better cleaning effect. In contrast, the foam of the soap without humidity control disappears quickly, and the detergency also decreases.

[0239] The difference in foam duration can be attributed to the uniform evaporation of moisture during the humidity-controlled curing process. Under humidity control, the moisture inside the soap is more evenly distributed, making the pore structure on the soap surface more stable. This uniform structure helps to generate more persistent and better-quality foam, thus providing more lasting detergency. On the contrary, in the naturally cured soap, due to the uneven evaporation of moisture, the foam structure is looser, resulting in easy foam rupture and a consequent decrease in detergency.

[0240] Therefore, humidity-controlled curing not only helps to improve the hardness of the soap but also enhances its foam effect and detergency during use, thereby improving the overall performance of the soap.

[0241] Experiment 3: Comparative Experiment on Soap Stability and Appearance Changes

[0242] Experiment Description:

[0243] This experiment aims to evaluate the stability of the appearance changes of humidity-controlled cured soap and naturally cured soap during storage. The appearance stability of the soap is closely related to its internal structure. Good stability can ensure that the soap is not prone to cracking, softening, or deformation during use, increasing the durability and service life of the soap. By comparing the appearance changes of the two groups of soaps after storage for a period of time, this experiment verifies the influence of the humidity-controlled curing process on the soap stability.

[0244] Experiment Steps:

[0245] Sample Preparation:

[0246] Example 2 (humidity-controlled curing): Place the soap in a humidity-controlled environment with a humidity setting of 55%-60% and a curing time of 30 days.

[0247] Comparative Example 2 (natural curing): Cure the soap in a conventional environment with a humidity of 60%-70% and a curing time of 30 days.

[0248] Prepare 5 experimental samples for each group, ensuring that the size and weight of each sample are the same.

[0249] Appearance Inspection:

[0250] Inspect the appearance of the soap every week and record whether there are phenomena such as cracking, softening, and deformation.

[0251] Pay special attention to whether there is excessive evaporation of moisture or cracks on the surface of the soap.

[0252] Stability assessment:

[0253] By observing the appearance of the soap, record information such as the surface smoothness of the soap, the time of crack occurrence, and the degree of softening.

[0254] Record the appearance changes of the soap after 30 days of storage, and evaluate the influence of humidity-controlled curing on the appearance stability of the soap.

[0255] Data recording and comparison:

[0256] Record the phenomena such as cracks and softening that occur in the soaps of Example 2 and Comparative Example 2 during the weekly inspections, and compare the appearance stabilities of the two.

[0257] Possible experimental data:

[0258] Table name: Experimental data on soap stability and appearance changes

[0259]

[0260]

[0261] Experimental summary:

[0262] Judging from the experimental results, the soap of Example 2 showed excellent appearance stability and a low softening rate during the 30-day storage period, with almost no cracks or softening phenomena occurring. This phenomenon indicates that the humidity-controlled curing process effectively maintains the overall structural stability of the soap and avoids the problems of cracks and softening caused by uneven evaporation of moisture.

[0263] The mechanism of this difference can be attributed to the uniform evaporation of moisture during the humidity-controlled curing process. Under humidity control, the moisture distribution on the surface and inside of the soap is more uniform, which avoids the problems of cracking or softening caused by excessive local moisture. During the natural curing process, the evaporation of moisture is uneven, which easily forms stress points inside and on the surface of the soap, leading to the occurrence of cracks and softening. Therefore, the humidity-controlled curing process enhances the stability of the soap by optimizing the moisture evaporation, enabling it to maintain a good appearance and structure during long-term storage.

[0264] This improvement in appearance stability also reflects the uniformity of the internal molecular arrangement of the soap. Under humidity-controlled curing, the bonding between soap molecular chains is tighter, reducing the structural changes of the soap during storage.

[0265] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A whitening and antioxidant soap based on the repair function of PQQ, characterized in that: Includes the following mass components: Olive oil: 2-5 parts; Coconut oil: 1-3 parts; Jojoba oil: 1-2 parts; Avocado butter: 1-3 portions; Sweet almond oil: 1-2 parts; Glycerin: 1-3 parts; Sorbitol: 0.5-2 parts; White sugar: 0.2-1 part; Amino acids: 0.2-0.5 parts; PQQ: 0.01-0.05 parts; Basic compound: 1-3 parts; Purified water: 5-15 parts; Low concentration solvent: 0.1-0.5 parts; Fatty acids: 0.5-2 parts; Flavor: 0.01-0.05 parts.

2. A whitening and antioxidant soap based on the repair function of PQQ according to claim 1, characterized in that: The olive oil is virgin olive oil or refined olive oil, and the coconut oil is fractionated coconut oil or hydrogenated coconut oil.

3. The whitening and antioxidant soap based on the PQQ repair function according to claim 1, characterized in that: The fatty acid includes at least one of stearic acid, palmitic acid and lauric acid, and the amino acid includes at least one of glutamic acid, serine and glycine.

4. The whitening and antioxidant soap based on the repair function of PQQ according to claim 1, characterized in that: The PQQ is in the form of PQQ disodium salt, and the fragrance is selected from natural plant extracts, including at least one of lavender essential oil, tea tree essential oil and lemon essential oil.

5. The whitening and antioxidant soap based on the repairing function of PQQ according to claim 1, characterized in that: The low-concentration solvent is ethanol or propylene glycol, the alkaline compound is sodium hydroxide or sodium carbonate, and the conductivity of the pure water does not exceed 10 μS / cm.

6. A method for preparing a whitening and antioxidant soap based on the repair function of PQQ, according to the whitening and antioxidant soap based on the repair function of PQQ according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1, oil pretreatment: pour olive oil, coconut oil, jojoba oil, avocado fat and sweet almond oil into a stirred reactor, mix according to proportion, heat and stir until uniform, to obtain an oil mixture; S2, soap base preparation: continue to add fatty acids and alkaline compounds to the oil mixture, stir the reactor to increase the temperature, perform saponification reaction, continue until the soap base is formed, and then cool the equipment; S3. Dissolving water-soluble components: Pour purified water into a new stirred reactor, add glycerol, sorbitol and sugar, stir until completely dissolved, add an aqueous solution containing PQQ and a low-concentration solvent, mix, and stir for 5-10 minutes, and filter to obtain a mixed solution; S4, mixing and homogenizing: slowly pour the mixed solution into the stirring reactor where the soap base is stored, and stir for 10-15 minutes to obtain a mixture A; S5, molding and cooling: when the temperature drops below 35°C, add essence to mixture A, stir well, pour it into a mold, let it stand at 20°C-25°C until it is completely solidified, and demold to obtain a preliminarily formed soap; S6, curing and drying: the initially formed soap is cured in a ventilated environment for 14 days to 30 days, and the final soap product is obtained after the determination is completed.

7. The method for preparing a whitening and antioxidant soap based on the repairing function of PQQ according to claim 6, characterized in that: In the step S1, the heating temperature of the oil mixture is controlled at 40°C-45°C, and the stirring time is 20min-30min; In the step S2, the saponification reaction temperature is controlled at 60°C-75°C, the reaction time is 30min-60min, the formation of soap base needs to be tested by pH to ensure that the pH value is between 9-11, and the cooling temperature is controlled below 40°C.

8. The method for preparing a whitening and antioxidant soap based on the repairing function of PQQ according to claim 6, characterized in that: In the step S3, the temperature of the mixture of PQQ and the low-concentration solvent is controlled at 40°C, the stirring time is 5 min-10 min, the stirring speed is controlled at 2000 rpm-5000 rpm, and the filtration is performed by microfiltration with a pore size not exceeding 0.22 μm to remove insoluble matter.

9. The method for preparing a whitening and antioxidant soap based on the repair function of PQQ according to claim 6, characterized in that: In the step S4, the speed of the stirred reactor is 2000 rpm-5000 rpm, the time is controlled at 10 min-15 min, and the stirring environment is in a vacuum state; In the step S5, the mold material includes silicone or stainless steel, and slight cooling is required before demoulding, and the slight cooling range is 0°C-10°C.

10. The method for preparing a whitening and antioxidant soap based on the repair function of PQQ according to claim 6, characterized in that: In the step S6, the relative humidity of the curing and drying is controlled at 40%-60%, and the determination is made by weight change or hardness test.

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