Pigment extraction process for lipstick production

Abstract

The present invention relates to the technical field of cosmetics production. Provided is a pigment extraction process for lipstick production. The process comprises: S1, raw material preparation and treatment: taking a fruit or a plant material that is rich in natural pigments as a pigment extraction raw material, and treating same, so as to obtain a raw material extracting solution; S2, pigment extraction: using an ultrasonic-assisted ethanol gradient extraction method, in combination with a dynamic temperature regulation and control technology; and S3, concentration and pulverization: concentrating the extracting solution, which has been subjected to gradient extraction, by means of a rotary evaporator, so as to obtain a concentrated pigment solution, and then subjecting the concentrated pigment solution to a vacuum drying treatment until a target pigment powder is obtained. In the pigment extraction process for lipstick production, using the ultrasonic-assisted ethanol gradient extraction method in combination with the dynamic temperature regulation and control technology significantly improves the extraction efficiency and purity of the pigment, and also ensures the brightness and stability of the lipstick color.

Description

A pigment extraction process for lipstick production TECHNICAL FIELD

[0001] The present application relates to the technical field of cosmetic production, in particular to a natural pigment extraction process for high-efficiency and high-quality lipstick production. BACKGROUND

[0002] In the production process of lipstick, pigments are key factors that determine the color, texture and stability of lipstick. The selection and optimization of the extraction process of pigments are crucial. Traditional pigment extraction methods often have low extraction efficiency, low pigment purity, poor stability and environmental pollution, which cannot meet the requirements of modern lipstick production for high quality, high efficiency and environmental protection. Especially for the extraction of natural pigments, how to ensure the purity and stability of pigments while effectively avoiding pigment degradation and discoloration has become a technical problem to be solved in the field of lipstick production.

[0003] In the prior art, although methods such as ultrasonic-assisted extraction and ethanol extraction have been used, these methods still have some deficiencies in practical application, such as ultrasonic extraction may cause pigment degradation due to improper temperature control, and ethanol extraction may affect the purity and extraction efficiency of pigments due to insufficient extraction conditions. Therefore, developing a pigment extraction process that can efficiently and stably extract high-quality natural pigments while reducing environmental pollution and production costs is of great significance to improve the quality and market competitiveness of lipstick products. SUMMARY

[0004] To solve the problems mentioned in the background, the present application provides a pigment extraction process for lipstick production, which uses ultrasonic-assisted ethanol gradient extraction method combined with dynamic temperature regulation technology, significantly improves the extraction efficiency and purity of pigments, and ensures the brightness and stability of lipstick color.

[0005] The above technical purpose of the present application is realized by the following technical scheme: a pigment extraction process for lipstick production, comprising the following steps:

[0006] S1, raw material preparation and treatment: taking fruits or plant materials rich in natural pigments as pigment extraction raw materials, and obtaining raw material extraction liquid after treatment;

[0007] S2, pigment extraction: using ultrasonic-assisted ethanol gradient extraction method combined with dynamic temperature regulation technology, the specific steps include:

[0008] a) mixing the raw material extraction liquid with ethanol at a volume ratio of 6:4 to obtain a mixed liquid;

[0009] b) placing the mixed liquid in an ultrasonic extractor to obtain an extraction liquid;

[0010] c) gradually increasing the volume fraction of ethanol in the extraction liquid, increasing by 10%-20% each time, until the volume fraction of ethanol reaches 80%, and performing ultrasonic extraction at each concentration stage;

[0011] S3, concentrating and powdering: concentrating the extraction liquid after completing the gradient extraction through a rotary evaporator to obtain concentrated pigment liquid, and then performing vacuum drying treatment on the concentrated pigment liquid until the target pigment powder is obtained.

[0012] In some embodiments, in step S1, the raw material processing includes peeling, cutting, chopping, and filtering.

[0013] In some embodiments, in step S2, it further includes the following step d): after each ultrasonic extraction is completed, the extraction liquid is centrifuged using a centrifuge, and the supernatant is collected as the pigment extraction liquid.

[0014] In some embodiments, during steps b) and c) of step S2, dynamic temperature regulation is performed throughout, including temperature setting, temperature monitoring, automatic adjustment, and cycle control.

[0015] In some embodiments, before completing step S2 and performing step S3, the extraction liquid is first subjected to fractional treatment using an ultrafiltration membrane, and then the ultrafiltrated extraction liquid is further treated using a nanofiltration membrane to obtain a relatively pure pigment solution.

[0016] In some embodiments, it further includes step S4, pigment purification: preparing a silica gel column chromatography device, dissolving the pigment powder in an eluent and loading it onto the silica gel column, eluting at a flow rate of 5 ml / min, collecting the eluate, and repeating step S3 on the collected eluate to obtain the purified target pigment powder.

[0017] In some embodiments, it further includes step S5, pigment application: preparing a lipstick base formula, adding high-purity target pigment powder to the lipstick base formula, mixing uniformly, heating to 70℃, thoroughly stirring to uniformity, pouring into a lipstick mold, and cooling to set to obtain a finished lipstick product.

[0018] In some embodiments, during step S2, the used ethanol solvent is collected and sent to a distillation device for distillation treatment to remove impurities and moisture. The distilled ethanol is subjected to condensation treatment, recovered, and stored in a solvent storage tank for subsequent pigment extraction processes.

[0019] Compared with the prior art, the beneficial effects of the present application are:

[0020] The present application adopts ultrasonic-assisted ethanol gradient extraction method, through gradually increasing the ethanol concentration and combining ultrasonic extraction, can efficiently destroy the cell structure, promote the rapid release of pigments, and according to the solubility difference of different pigments, gradually extract the target pigment, significantly improve the extraction efficiency and pigment purity.

[0021] The present application precisely controls the temperature condition in the extraction process through the whole process dynamic temperature regulation technology, avoids the degradation or discoloration of pigments due to too high or too low temperature, and ensures the quality and stability of the extracted pigments.

[0022] The present application further improves the purity and concentration of the pigment solution through ultrafiltration and nanofiltration membrane treatment, provides a good foundation for subsequent concentration and drying operation. At the same time, the solvent recycling step effectively reduces the waste liquid discharge and environmental pollution, and reduces the production cost.

[0023] In summary, the pigment extraction process for lipstick production of the present application solves the problems existing in the prior art through technical innovation and optimization design, provides an efficient, stable and environmentally friendly pigment extraction method for the lipstick production industry, and has significant technical advantages and market application prospects. BRIEF DESCRIPTION OF DRAWINGS

[0024] Fig. 1 is a flow chart of the present application. DETAILED DESCRIPTION

[0025] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0026] As shown in Fig. 1, the present embodiment provides a pigment extraction process for lipstick production, which includes the following steps:

[0027] S1, raw material preparation and treatment: taking fruits or plant materials rich in natural pigments as pigment extraction raw materials, and obtaining raw material extraction liquid after treatment;

[0028] S2, pigment extraction, which is a key link in lipstick production, determines the color quality and stability of the final lipstick. In this step, the pigment extraction process adopts ultrasonic-assisted ethanol gradient extraction method, and combines dynamic temperature regulation technology. Ultrasonic-assisted extraction can efficiently destroy the cell structure and promote the rapid release of pigments; ethanol gradient extraction can extract target pigments according to the solubility of different pigments, improve the extraction efficiency and pigment purity, and the specific steps are as follows:

[0029] a) Mix the raw material extract with ethanol at a volume ratio of 6:4 to obtain a mixed solution. This step is used to protect the pigment structure by means of ethanol. A low concentration (40% by volume) of ethanol can gently extract the pigment while reducing the destruction of the pigment structure, ensuring the quality of the extracted pigment;

[0030] b) Place the mixed solution in an ultrasonic extractor to obtain an extract. The role of ultrasonic waves is to break the cell wall and promote the release of pigments. The strong vibration of ultrasonic waves can effectively break the cell wall, making it easier for pigment molecules to be released from the cell, thereby improving extraction efficiency;

[0031] c) Gradually increase the volume fraction of ethanol in the extract by 10%-20% each time until the volume fraction of ethanol reaches 80%. At each concentration stage, perform ultrasonic extraction once using an ultrasonic extractor (i.e., repeat step b). This gradient extraction can gradually extract target pigments according to the solubility differences of different pigments, improving the purity and extraction efficiency of pigments;

[0032] S3, Concentration and powdering: Concentrate the extract obtained after gradient extraction using a rotary evaporator to obtain a concentrated pigment solution, to remove ethanol and other solvents. Rotary evaporation can efficiently remove solvents, improving the concentration and purity of the pigment solution, while reducing the time and energy consumption of subsequent drying operations. Then, dry the concentrated pigment solution in a vacuum drying oven until the target pigment powder is obtained. Vacuum drying can quickly remove solvents and moisture at low temperatures, resulting in stable pigment powder while avoiding degradation and discoloration of the pigment;

[0033] S4, Pigment purification:

[0034] Prepare a silica gel column chromatography device with an initial water content of 10%-14% in the silica gel;

[0035] Dissolve the pigment powder in the eluent and load it onto the silica gel column;

[0036] Elute at a flow rate of 5 ml / min and collect the eluate;

[0037] Repeat step S3 on the collected eluate to obtain the purified target pigment powder.

[0038] S5, Pigment application:

[0039] Prepare a lipstick base formula: 30g of natural oil, 20g of beeswax, 0.5g of antioxidant, and 0.2g of preservative. Add 25g of high-purity target pigment powder to the lipstick base formula, mix evenly using a stirrer, heat the mixture to 70°C using a heating device, and mix thoroughly to ensure the fusion of the lipstick components. Pour the molten lipstick liquid into a lipstick mold and cool and shape to obtain the finished lipstick product.

[0040] In step S1, 1000g of fresh, mature, and pest-free fruit or plant material rich in natural pigments can be selected as the pigment extraction raw material. These raw materials can include but are not limited to red flesh pitaya, strawberries, blueberries, beetroot, purple kale, etc., ensuring that the raw materials are bright in color and rich in target pigments. Selecting fresh, mature, and pest-free raw materials can ensure high purity and bright color of the extracted pigments, while reducing impurities in subsequent processing and improving the quality and safety of the final product.

[0041] The detailed steps of raw material processing are as follows: using a knife to peel the raw material (if applicable), remove the thorns, impurities and inedible parts on the outer skin. Peeling can effectively remove contaminants and unwanted parts on the surface of the raw material, improving the purity of the pigment extraction solution.

[0042] Cut the processed raw material into small pieces, about 2cm x 2cm x 2cm in size, for subsequent crushing processing. Cutting the raw material into small pieces can evenly distribute the stress of the raw material in the blender, improving the crushing efficiency and facilitating the full release of pigments.

[0043] Put the cut raw material pieces into the blender and add an appropriate amount of water (about 200ml, adjust according to the nature of the raw material). Crush the raw material into fruit pulp. The appropriate amount of water can help the raw material to be crushed better, forming a uniform fruit pulp, which is convenient for subsequent filtration and extraction operations.

[0044] Use a 100-mesh sieve to filter the fruit pulp to remove seeds, coarse fibers and other impurities, obtaining a relatively pure fruit juice or extraction solution with a volume of about 800ml (adjust according to the raw material and water added). Filtration can remove large particle impurities in the fruit pulp, improving the purity of the extraction solution and providing a good basis for subsequent pigment extraction.

[0045] In step S2, step d) can be included: after each ultrasonic extraction, use a centrifuge to separate the extraction solution, and collect the supernatant as the pigment extraction solution. Centrifugal separation can further remove impurities and precipitates in the extraction solution, improving the purity and quality of the pigment extraction solution.

[0046] During steps b and c of step S2, dynamic temperature control can be performed throughout the process. Dynamic temperature control is a key step to ensure the efficiency and quality of pigment extraction. It is based on the principle of heat transfer, by monitoring and adjusting the temperature of the extraction solution in real time, to keep it within the most favorable range for pigment extraction and stability. Dynamic temperature control can accurately control the temperature conditions during extraction, avoiding degradation or discoloration of pigments due to excessive or insufficient temperature, ensuring the quality and stability of the extracted pigments.

[0047] Dynamic temperature control includes:

[0048] Temperature setting, during the ultrasonic extraction process, according to the solubility and stability of pigments, set an initial extraction temperature. For heat-sensitive pigments, the initial temperature may be lower (such as 40℃) to avoid pigment degradation. Reasonable initial temperature setting can protect the structure of pigments from being damaged and ensure the quality of extracted pigments.

[0049] Temperature monitoring, using high-precision temperature sensors to monitor the temperature of the extraction liquid in real time, to ensure the accuracy and real-time of temperature data. This helps to discover temperature deviation in time and take corresponding adjustment measures. Real-time monitoring of temperature can discover temperature deviation in time and take measures to adjust, ensuring that the temperature conditions during the extraction process are always within the optimal range.

[0050] Automatic adjustment, when the sensor detects that the current temperature deviates from the preset range, the controller will automatically adjust the power of the heating or cooling elements according to the size and direction of the temperature deviation. If the temperature is too low, the controller will instruct the heating element to increase power to increase the temperature of the extraction liquid; conversely, if the temperature is too high, the cooling element will be instructed to start to reduce the temperature of the extraction liquid. The automatic adjustment function can quickly respond to temperature deviation, ensuring that the temperature conditions during the extraction process are always within the optimal range, improving the extraction efficiency and quality of pigments.

[0051] Cycle control, during the entire extraction process, the dynamic temperature control system will continuously monitor and adjust the temperature to ensure that the temperature of the extraction liquid is always within the set range. This cycle control mechanism helps to maintain the stability of the extraction environment, thereby improving the extraction efficiency and quality of pigments. The cycle control mechanism can continuously maintain the stability of the extraction environment, reduce the influence of external factors on the extraction process, and improve the extraction efficiency and quality of pigments.

[0052] Before completing step S2 and proceeding to step S3, the extraction liquid can first be subjected to fractional treatment using an ultrafiltration membrane to remove macromolecular impurities and particles, thereby improving the purity and quality of the pigment solution, and then subjected to further treatment using a nanofiltration membrane to remove small molecular interference substances, obtaining a relatively pure pigment solution. Nanofiltration membrane treatment can further remove small molecular interference substances in the extraction liquid, improve the purity and concentration of the pigment solution, and provide a good basis for subsequent concentration and drying operations.

[0053] During step S2, used ethanol solvent can be collected, which can reduce waste liquid discharge and environmental pollution, and reduce production cost;

[0054] The collected ethanol solvent is sent to a distillation device for distillation treatment to remove impurities and moisture, which can remove impurities and moisture in the ethanol solvent, improve the purity and quality of the solvent, and provide a good basis for subsequent recycling;

[0055] The distilled ethanol is subjected to condensation treatment, recovered and stored in a solvent storage tank for subsequent pigment extraction process, realizing efficient recovery and reuse of ethanol, which can reduce solvent consumption and waste liquid discharge, reduce production cost and environmental pollution, and meet the concept of green production. At the same time, recycling ethanol can also improve the stability and reliability of the pigment extraction process.

[0056] Next, taking beetroot as raw material, a specific implementation step of a pigment extraction process for lipstick production is exemplarily provided by using the flowchart shown in Figure 1:

[0057] S1, raw material preparation and treatment

[0058] 1. Select raw materials: select 1000g of fresh, mature, and pest-free beetroot as the pigment extraction raw material. Beetroot is rich in natural red pigment and is suitable for lipstick production.

[0059] 2. Peeling and cutting: use a knife to peel the beetroot and remove impurities and inedible parts on the outer skin. Then cut the treated beetroot into small pieces, about 2cm x 2cm x 2cm in size.

[0060] 3. Stirring and filtering: put the cut beetroot pieces into a blender, add an appropriate amount of water (about 200ml), and stir them into a fruit pulp. Use a 100-mesh sieve to filter the fruit pulp to remove seeds, coarse fibers and other impurities, and obtain a relatively pure beetroot extract with a volume of about 800ml.

[0061] S2, pigment extraction

[0062] 1. Preparation of mixed solution: mix the beetroot extract with ethanol at a volume ratio of 6:4 to obtain a mixed solution. In this step, the initial volume fraction of ethanol is 40%, which is used to protect the structure of the pigment.

[0063] 2. Ultrasonic extraction: place the mixed solution in an ultrasonic extractor for ultrasonic extraction. During the extraction process, dynamic temperature control is performed throughout the process, with an initial temperature of 40°C, and the temperature is monitored and adjusted in real time to maintain it within the optimal extraction range.

[0064] 3. Gradient extraction: gradually increase the volume fraction of ethanol in the extraction liquid by 10% each time, i.e. adjust to 50%, 60%, 70% and 80% respectively, and perform ultrasonic extraction at each concentration stage. After each extraction, use a centrifuge to centrifuge the extraction liquid and collect the supernatant as the pigment extract.

[0065] 4. Dynamic temperature regulation: During the ultrasonic extraction and gradient extraction, dynamic temperature regulation is performed throughout the process, including temperature setting, temperature monitoring, automatic adjustment and cycle control, to ensure that the temperature conditions during the extraction process are always maintained within the optimal range.

[0066] S3. Concentration and powdering

[0067] 1. Ultrafiltration and nanofiltration treatment: After completing the gradient extraction, first use ultrafiltration membrane to fractionally process the extract, remove large molecular impurities and particles. Then use nanofiltration membrane to further process the ultrafiltrated extract, remove small molecular interferents, and obtain a relatively pure pigment solution.

[0068] 2. Rotary evaporation concentration: Concentrate the pigment solution treated by membrane through a rotary evaporator to remove ethanol and other solvents, and obtain a concentrated pigment solution.

[0069] 3. Vacuum drying and powdering: Place the concentrated pigment solution in a vacuum drying oven for drying treatment until the target pigment powder is obtained.

[0070] S4. Pigment purification

[0071] 1. Prepare silica gel column: Prepare silica gel column chromatography device, control the initial water content of silica gel between 10%-14%.

[0072] 2. Sample loading and elution: Dissolve the pigment powder in the eluent and load it onto the silica gel column. Elute at a flow rate of 5 ml / min and collect the eluate.

[0073] 3. Repeat concentration and powdering: Repeat the concentration and drying operations in step S3 for the collected eluate to obtain the purified target pigment powder.

[0074] S5. Pigment application

[0075] 1. Prepare the base formula of the lipstick: Weigh 30g of natural oil, 20g of beeswax, 0.5g of antioxidant and 0.2g of preservative, and mix well.

[0076] 2. Mix and heat: Add 25g of high-purity target pigment powder to the base formula of the lipstick, mix well with a stirrer. Heat the mixture to 70°C and mix well.

[0077] 3. Cooling and shaping: Pour the molten lipstick liquid into the lipstick mold and cool and shape to obtain the finished lipstick product.

[0078] Ethanol solvent recovery

[0079] 1. Collect the used ethanol solvent during step S2.

[0080] 2. Distillation treatment: The collected ethanol solvent is sent into a distillation device for distillation treatment to remove impurities and moisture.

[0081] 3. Condensation recovery: The distilled ethanol is subjected to condensation treatment, recovered and stored in a solvent storage tank for subsequent pigment extraction process.

[0082] In this embodiment, beetroot is used as raw material, and high-quality natural pigment is successfully extracted by ultrasonic-assisted ethanol gradient extraction combined with dynamic temperature regulation technology, and is applied to lipstick production. Through ultrafiltration and nanofiltration membrane treatment, pigment purification and ethanol solvent recycling, the purity and stability of the pigment are improved, and environmental pollution and production cost are reduced. This process provides an efficient, stable and environmentally friendly pigment extraction method for the lipstick production industry.

[0083] This specific embodiment is only an explanation of the present application, and is not a limitation of the present application. Those skilled in the art can make modifications to this embodiment without creative contribution after reading this specification, but as long as it is within the scope of the claims of the present application, it is protected by the patent law.

Claims

1. A pigment extraction process for lipstick production, characterized by, The method comprises the following steps: S1, raw material preparation and processing: taking fruit or plant material rich in natural pigment as the pigment extraction raw material, and obtaining a raw material extraction liquid after processing; S2, pigment extraction: using ultrasonic-assisted ethanol gradient extraction method and combining dynamic temperature regulation technology, the specific steps include: a) mixing the raw material extraction liquid with ethanol at a volume ratio of 6:4 to obtain a mixed liquid; b) placing the mixed liquid in an ultrasonic extractor to obtain an extraction liquid; c) gradually increasing the volume fraction of ethanol in the extraction liquid by 10%-20% each time until the volume fraction of ethanol reaches 80%, and performing ultrasonic extraction at each concentration stage; S3, concentration and powdering: concentrating the extraction liquid after gradient extraction by a rotary evaporator to obtain a concentrated pigment liquid, and then vacuum drying the concentrated pigment liquid until the target pigment powder is obtained.

2. The pigment extraction process for lipstick production according to claim 1, characterized in that: In step S1, the raw material processing includes peeling, cutting, crushing and filtering.

3. The pigment extraction process for lipstick production according to claim 1, characterized in that: In step S2, step d) is further included: after each ultrasonic extraction, the extraction liquid is centrifuged using a centrifuge, and the supernatant is collected as the pigment extraction liquid.

4. The pigment extraction process for lipstick production according to claim 1, characterized in that: During steps b) and c) of step S2, dynamic temperature regulation is performed throughout the process, including temperature setting, temperature monitoring, automatic adjustment and cycle control.

5. The pigment extraction process for lipstick production according to claim 1, characterized in that: Before completing step S2 and performing step S3, the extraction liquid is first subjected to fractional treatment using an ultrafiltration membrane, and then the ultrafiltrated extraction liquid is further treated using a nanofiltration membrane to obtain a relatively pure pigment solution.

6. The pigment extraction process for lipstick production according to claim 1, characterized in that: Step S4, pigment purification, is further included: preparing a silica gel column chromatography device, dissolving the pigment powder in an eluent and loading it onto the silica gel column, eluting at a flow rate of 5 ml / min, collecting the eluate, and repeating step S3 on the collected eluate to obtain the purified target pigment powder.

7. The pigment extraction process for lipstick production according to claim 1, characterized in that: Step S5, pigment application, is further included: preparing a lipstick base formula, adding high-purity target pigment powder to the lipstick base formula, mixing uniformly, heating to 70°C, thoroughly stirring to uniformity, pouring into a lipstick mold, and cooling to set to obtain a finished lipstick product.

8. The pigment extraction process for lipstick production according to claim 1, characterized in that: During step S2, the used ethanol solvent is collected and sent to a distillation device for distillation to remove impurities and moisture. The distilled ethanol is condensed, recovered and stored in a solvent storage tank for subsequent pigment extraction process.

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