Plant composite extract with soothing efficacy and use
By percolation extraction and refining of a compound of purslane, pine needles, and centella asiatica, the problem of unstable mixing of plant extracts was solved, achieving high-efficiency soothing effects and stability, and producing an excellent plant compound extract.
Patent Information
- Application Number
- CN202310598239.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-05-25
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2043-05-25
AI Technical Summary
In existing technologies, it is difficult to form a stable binding state when multiple plant extracts are mixed, resulting in lower-than-expected soothing effects and poor storage stability.
A compound plant extract was prepared by percolation extraction using a mixture of purslane, pine needle leaves, and centella asiatica, combined with a specific concentration of 1,3-butanediol solvent and a refining agent. The percolation extraction and refining process formed a stable bound state, and the temperature and filtration conditions were controlled.
This achieves stable and excellent soothing effects of plant compound extracts during application and high stability during storage, thus improving the quality and efficacy of the extract.
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Abstract
Description
Technical Field
[0001] This application relates to the field of plant compound extraction technology, and more specifically, it relates to a plant compound extract with soothing effects and its application. Background Technology
[0002] Plant extracts are substances extracted or processed from plants (whole or part of a plant) using appropriate solvents or methods. They can be used in the pharmaceutical, food, daily chemical, and other industries.
[0003] One of the main benefits of plant extracts is their soothing effect. These extracts help improve skin irritation and other conditions, and are particularly effective in inhibiting the formation of TRPV1 protein, showing broad application prospects. Related technical solutions often involve extracting and combining multiple plants containing soothing components. First, each plant is extracted individually to obtain its corresponding extract, and then these extracts are combined in appropriate proportions.
[0004] Regarding the aforementioned technologies, the inventors believe that although this method can completely dissolve the soothing components from different plants and obtain high-quality extracts, it is often found that it is difficult to form a stable mixture when combining multiple extracts. This results in the soothing effects being lower than expected during subsequent applications, and the stability is also often poor during application and storage. Therefore, there is an urgent need to propose a solution to address the above-mentioned technical problems. Summary of the Invention
[0005] In order to enable the soothing components of various plants to exert outstanding and stable effects in the mixture and maintain excellent stability during storage, this application provides a plant compound extract with soothing effects and its application.
[0006] In the first aspect, this application provides a plant compound extract with soothing effects, using the following technical solution:
[0007] A plant-based complex extract with soothing properties, made from ingredients comprising the following weight ratios:
[0008] Formula: Purslane = 1:(3-5);
[0009] The formula is composed of raw materials including pine needles and centella asiatica leaves;
[0010] It is prepared and obtained through the following steps:
[0011] S1. Prepare the ingredients containing pine needles, centella asiatica and purslane according to the specified ratio;
[0012] S2. After crushing the raw material in step S1, add 15-20 times its weight of solvent for percolation extraction to obtain the extract.
[0013] S3. Add a refining agent to the extract from step S2 for decolorization and purification. After centrifugation and filtration, a plant compound extract with soothing effects can be obtained.
[0014] By adopting the above technical solutions, the effective components extracted from pine needle plum leaves have excellent antibacterial, anti-inflammatory, and cell-repairing effects; the effective components extracted from centella asiatica have soothing, irritation-reducing, and healing effects, and are rich in various natural components with anti-inflammatory effects, which can inhibit various pathogenic bacteria and viruses in the human body, thereby playing an auxiliary role in anti-inflammatory effects; the effective components extracted from purslane have broad-spectrum antibacterial effects and excellent anti-inflammatory and repairing effects. The applicant has discovered that by mixing and extracting the three raw materials using percolation extraction, not only can the effective components be completely dissolved, but the concentration difference characteristic of percolation extraction can also be utilized to form a relatively stable binding state between the three raw materials during the continuous dissolution process. Furthermore, by using a refining agent for decolorization and purification, the final plant compound extract can exert excellent and outstanding soothing effects when applied. Meanwhile, the obtained extract can maintain excellent stability during storage due to the stable combination of the effective components of each raw material. Moreover, this application overcomes the application disadvantages of separate extraction and mixing, and uses a one-pot method to obtain a high-quality plant compound extract, which has outstanding and significant progress overall.
[0015] Preferably, the compound is composed of pine needles and centella asiatica leaves in a weight ratio of 1:1.
[0016] By adopting the above technical solution, when the formula composed of pine needles and centella asiatica in the above weight ratio is mixed and extracted with purslane, the combination of effective components in the formula is more likely to accept and integrate the effective components in purslane, thereby forming a more stable combination state, and the soothing effect exerted by the combination of each other is better.
[0017] Preferably, the solvent is 1,3-butanediol with a concentration of 40-60%.
[0018] By adopting the above technical solution, using 1,3-butanediol of the above concentration as an extraction solvent can not only enable the soothing components in the raw materials to dissolve quickly, but also promote the formation of a relatively stable binding state between the components during the dissolution process. It can also alleviate the volatilization of the soothing components during the extraction process, thereby enabling the obtained plant compound extract to exert a stable and excellent soothing effect and maintain excellent stability during storage.
[0019] Preferably, the refined preparation comprises the following raw materials in parts by weight:
[0020] 30-40 parts diatomaceous earth;
[0021] 10-20 parts magnesium oxide;
[0022] 5-15 parts of alumina;
[0023] 10-20 parts coconut shell activated carbon;
[0024] 15-25 parts zeolite powder;
[0025] Chitosan powder 1-10 parts.
[0026] By adopting the above technical solution, the refined preparation obtained by mixing the above raw materials can effectively adsorb the pigments generated during the extraction process, enabling the plant compound extract to meet the appearance quality requirements. At the same time, through the combination of the raw materials, the above refined preparation can also remove impurities in the extract, allowing the soothing components dissolved from pine needle plum leaves, centella asiatica, and purslane to form a tighter bond. This, in turn, can enhance the soothing efficacy of the plant compound extract during application to a certain extent, and also improve its storage stability.
[0027] Preferably, the refined preparation comprises the following raw materials in parts by weight:
[0028] 35 parts of diatomaceous earth;
[0029] 15 parts magnesium oxide;
[0030] 10 parts aluminum oxide;
[0031] 15 parts of coconut shell activated carbon;
[0032] 20 parts zeolite powder;
[0033] 5 parts chitosan powder.
[0034] By adopting the above technical solution, the refined preparation composed of the above-mentioned weight of raw materials has a relatively stable and excellent effect when applied, which can ensure that the obtained plant compound extract has excellent quality.
[0035] Preferably, step S2 is specifically set as follows: after pulverizing the raw material in step S1 to 50-100 mesh, add 15-20 times the weight of solvent for percolation extraction to obtain the extract.
[0036] By adopting the above technical solution, in step S2, after pulverizing the leaves of pine needle plum, centella asiatica, and purslane to 50-100 mesh, the soothing components contained in the three raw materials can have a moderate dissolution rate during the subsequent extraction process. The reasonable slow release rate can better enable the different soothing components to be compatible with each other and form a more stable binding state, which is conducive to the plant compound extract exerting excellent soothing effects when applied and ensuring its excellent storage stability, thus resulting in high overall quality.
[0037] Preferably, step S3 is specifically set as follows: adding a refining agent to the extract in step S2 for decolorization and refining at a temperature of 70-80℃, stirring for 1-1.5 hours during the refining process, and then centrifuging and filtering to obtain a plant compound extract with soothing effects.
[0038] By adopting the above technical solution, in the refining process of step S3, the temperature is controlled at 70-80℃, and stirring is carried out for 1-1.5 hours during the refining process. This is conducive to the full effect of the refined preparation. The suitable temperature can also promote better cooperation between the soothing components dissolved from pine needle plum leaves, centella asiatica and purslane during the decolorization and removal of impurities. As a result, the overall soothing effect and storage stability of the obtained plant compound extract are both excellent.
[0039] Preferably, step S3 is specifically set as follows: adding a refining agent to the extract in step S2 for decolorization and purification, centrifuging, first filtering through a 0.45μm filter membrane; then ultrafiltration through a 10000D ultrafiltration membrane; and finally nanofiltration through a 300D nanofiltration membrane; thus obtaining a plant compound extract with soothing effects.
[0040] By adopting the above technical solution, in the filtration operation of step S3, the above membrane separation technology can further remove impurities in the extract, significantly improve the clarity and storage stability of the plant compound extract, and make its soothing effect more excellent.
[0041] Preferably, step S3 is specifically set as follows: the extract from step S2 is decolorized and purified by adding a refining agent, centrifuged, filtered through a 0.45μm filter membrane, then ultrafiltered with a 10000D ultrafiltration membrane at a pressure controlled at 2-4 bar, and ultrafiltered to 80%; finally, nanofiltered with a 300D nanofiltration membrane at a pressure controlled at 2-4 bar, and nanofiltered to 10%; thus, a plant compound extract with soothing effects can be obtained.
[0042] By adopting the above technical solution, after filtration through a 0.45μm filter membrane, the solution is first ultrafiltered to 80% and then nanofiltered to 10%, which ensures that the soothing components dissolved from pine needle plum leaves, centella asiatica and purslane have a low loss, resulting in a higher quality plant compound extract.
[0043] Secondly, this application provides the application of a plant compound extract in the preparation of products with soothing effects, said products including pharmaceuticals, food, and cosmetics.
[0044] By adopting the above technical solution, the plant extract of this application is a natural substance that is easy to absorb and utilize, and can be widely used in the fields of pharmaceuticals, food and cosmetics.
[0045] In summary, this application has the following beneficial effects:
[0046] 1. Since this application mixes and extracts a compound containing pine needles leaves, centella asiatica and purslane, the soothing components in the three raw materials can form a relatively stable binding state with each other during the continuous dissolution process, thereby enabling the obtained plant compound extract to exert a stable and excellent soothing effect and maintain excellent stability during storage.
[0047] 2. This application also selects raw materials of pine needle plum leaves, centella asiatica and purslane with appropriate particle size, uses 1,3-butanediol with a concentration of 40-60% as solvent, and uses specific raw materials to obtain a refined preparation. During the refining process, the temperature is controlled at 70-80℃, and the mixture is first filtered through a 0.45μm filter membrane, then through a 10000D ultrafiltration membrane, and finally through a 300D nanofiltration membrane. The resulting plant compound extract has excellent storage stability and a better soothing effect. Detailed Implementation
[0048] The present application will be further described in detail below with reference to the embodiments.
[0049] Unless otherwise specified, all raw materials used in the preparation examples and embodiments of this application are commercially available.
[0050] The specification for coconut shell activated carbon is 300 mesh;
[0051] The zeolite powder has a mesh size of 100.
[0052] In the percolation extraction operation, an SLG500 percolation tank was used for percolation at normal pressure and temperature (25 degrees Celsius, 101 kPa atmospheric pressure) with a percolation flow rate of 2.5 ml / min.
[0053] Example
[0054] Example 1
[0055] A plant-based complex extract with soothing properties, made from ingredients comprising the following weight ratios:
[0056] Formula: Purslane = 1:4;
[0057] The compound consists of pine needle plum leaves and centella asiatica in a weight ratio of 1:1.
[0058] It is prepared and obtained through the following steps:
[0059] S1. Prepare the ingredients containing pine needles, centella asiatica and purslane according to the specified ratio;
[0060] S2. After crushing the raw material in step S1 to 75 mesh, add 15-20 times its weight of solvent for percolation extraction to obtain the extract.
[0061] S3. Add the refining agent to the extract from step S2 for decolorization and purification at 75℃. Stir for 1.25 hours during the purification process. After centrifugation and filtration, first filter through a 0.45μm filter membrane; then use a 10000D ultrafiltration membrane at a pressure of 3 bar to ultrafiltration to 80%; finally use a 300D nanofiltration membrane at a pressure of 3 bar to nanofiltration to 10%; thus, a plant compound extract with soothing effects can be obtained.
[0062] Note: In the above operation, the solvent is 1,3-butanediol with a concentration of 40-60%. In this embodiment, the solvent concentration is 50%, and the amount added is 18 times that of the raw material in step S1. The amount of the refining agent added is 2-4% of the weight of the extract. In this embodiment, it is 3%. The raw materials contained in the refining agent and their corresponding weights are shown in Table 1.
[0063] Example 2
[0064] A plant compound extract with soothing effects differs from Example 1 in that the raw materials in step S1 are pulverized to 50 mesh, and then 15-20 times their weight of solvent are added for percolation extraction to obtain the extract.
[0065] Example 3
[0066] A plant compound extract with soothing effects differs from Example 1 in that the raw materials in step S1 are pulverized to 100 mesh, and then percolated with 15-20 times their weight of solvent to obtain the extract.
[0067] Example 4
[0068] A plant compound extract with soothing effects differs from Example 1 in that the raw materials in step S1 are pulverized to 40 mesh, and then percolated with 15-20 times their weight of solvent to obtain the extract.
[0069] Example 5
[0070] A plant compound extract with soothing effects differs from Example 1 in that the raw materials in step S1 are pulverized to 110 mesh, and then 15-20 times their weight of solvent are added for percolation extraction to obtain the extract.
[0071] Examples 6-7
[0072] A plant compound extract with soothing effects differs from Example 1 in that the raw materials contained in the refined preparation and their corresponding weights are shown in Table 1.
[0073] Table 1. Raw materials and weight parts (kg / part) of the refined preparations in Examples 1 and 6-7.
[0074]
[0075]
[0076] Example 8
[0077] A plant compound extract with soothing effects, which differs from Example 1 in that the weight ratio of the compound and purslane is 1:3.
[0078] Example 9
[0079] A plant compound extract with soothing effects, which differs from Example 1 in that the weight ratio of the compound and purslane is 1:5.
[0080] Example 10
[0081] A plant compound extract with soothing effects, which differs from Example 1 in that the weight ratio of pine needle plum leaves and centella asiatica is 1:0.9.
[0082] Example 11
[0083] A plant compound extract with soothing effects, which differs from Example 1 in that the weight ratio of pine needle plum leaves and centella asiatica is 1:1.1.
[0084] Example 12
[0085] A plant compound extract with soothing effects differs from Example 1 in that step S3 is specifically set as follows: The extract from step S2 is decolorized and purified by adding a refining agent at 70°C with stirring for 1.5 hours. After centrifugation and filtration, the extract is first filtered through a 0.45 μm membrane; then ultrafiltered through a 10000D ultrafiltration membrane at 3 bar pressure until 80% is achieved; finally, nanofiltered through a 300D nanofiltration membrane at 3 bar pressure until 10% is achieved. This yields the plant compound extract with soothing effects.
[0086] Example 13
[0087] A plant compound extract with soothing effects differs from Example 1 in that step S3 is specifically set as follows: The extract from step S2 is decolorized and purified by adding a refining agent at 80°C with stirring for 1 hour. After centrifugation and filtration, the extract is first filtered through a 0.45μm membrane; then ultrafiltered through a 10000D ultrafiltration membrane at 3 bar pressure until 80% is achieved; finally, nanofiltered through a 300D nanofiltration membrane at 3 bar pressure until 10% is achieved; thus, a plant compound extract with soothing effects is obtained.
[0088] Example 14
[0089] A plant compound extract with soothing effects differs from Example 1 in that step S3 is specifically set as follows: The extract from step S2 is decolorized and purified by adding a refining agent at 75°C and stirring for 1.25 hours. After centrifugation and filtration, the extract is first filtered through a 0.45 μm membrane; then ultrafiltered through a 10000D ultrafiltration membrane at 2 bar pressure until 80% is achieved; finally, nanofiltered through a 300D nanofiltration membrane at 2 bar pressure until 10% is achieved; thus, a plant compound extract with soothing effects is obtained.
[0090] Example 15
[0091] A plant compound extract with soothing effects differs from Example 1 in that step S3 is specifically set as follows: The extract from step S2 is decolorized and purified by adding a refining agent at 75°C and stirring for 1.25 hours. After centrifugation and filtration, the extract is first filtered through a 0.45 μm membrane; then ultrafiltered through a 10000D ultrafiltration membrane at a pressure controlled at 4 bar until 80% is achieved; finally, nanofiltered through a 300D nanofiltration membrane at a pressure controlled at 4 bar until 10% is achieved; thus, a plant compound extract with soothing effects is obtained.
[0092] Example 16
[0093] A plant compound extract with soothing effects, which differs from Example 1 in that the purification temperature in step S3 is 65°C.
[0094] Example 17
[0095] A plant compound extract with soothing effects, which differs from Example 1 in that the purification temperature in step S3 is 85°C.
[0096] Comparative Example
[0097] Comparative Example 1
[0098] A plant compound extract with soothing effects, which differs from Example 1 in that the weight ratio of the compound and purslane is 1:2.8.
[0099] Comparative Example 2
[0100] A plant compound extract with soothing effects, which differs from Example 1 in that the weight ratio of the compound and purslane is 1:5.2.
[0101] Comparative Example 3
[0102] A plant compound extract with soothing effects differs from Example 1 in that, in step S1, the raw materials are pulverized to 50 mesh, extracted with 15 times their weight of 50% butylene glycol at 90°C for 2 hours, filtered, the filtrate is decolorized with 2% activated carbon, stirred at 70°C for 1.5 hours, filtered again, and the filtrate is concentrated using 300D nanofiltration until the retentate is 10% of the total volume, thus obtaining the extract.
[0103] Comparative Example 4.
[0104] A plant compound extract with soothing effects, which differs from Example 1 in that the raw materials in step S1 contain only pine needle leaves.
[0105] Comparative Example 5
[0106] A plant compound extract with soothing effects, which differs from Example 1 in that the raw materials in step S1 contain only Centella asiatica.
[0107] Comparative Example 6
[0108] A plant compound extract with soothing effects, which differs from Example 1 in that the raw materials in step S1 contain only purslane.
[0109] Comparative Example 7
[0110] A plant compound extract with soothing effects, which differs from Example 1 in that the raw materials in step S1 contain only the compound material, and the compound material is composed of pine needle plum leaves and centella asiatica in a weight ratio of 1:1.
[0111] Comparative Example 8
[0112] A plant compound extract with soothing effects, which differs from Example 1 in that the raw materials in step S1 do not contain pine needle leaves.
[0113] Comparative Example 9
[0114] A plant compound extract with soothing effects, which differs from Example 1 in that the raw materials in step S1 do not contain Centella asiatica.
[0115] Performance testing test samples: The plant compound extracts with soothing effects obtained in Examples 1-17 were used as test samples 1-17, and the plant compound extracts with soothing effects obtained in Comparative Examples 1-9 were used as control samples 1-9.
[0116] Test method:
[0117] (1) Stability test: Test samples 1-17 and control samples 1-9 were placed in the same test environment. The test environments were 4℃, 48℃, room temperature 25℃ light and -10℃ freeze-thaw. If the sample changed color or solids precipitated, the duration was recorded and the average value under the four test environments was recorded as the stability time (weeks). Considering practical needs, the overall test duration lasted for 12 weeks. If there was no color change or solids precipitated within 12 weeks, it was recorded as >12.
[0118] (2) Soothing efficacy test, at 4.4×10 4 Keratinocytes were seeded into 24-well plates at a density of cells / well and incubated overnight in an incubator (37℃, 5% CO2). The cells used in this test were keratinocytes (batch number: Ep220707), provided by Guangdong Boxi Biotechnology Co., Ltd. When the cell deposition rate in the 24-well plates reached 40-60%, the cells were injected with a plant compound extract at a concentration of 0.3125% (v / v) and stimulated with 15 μM capsaicin CAP. The cells were then cultured in an incubator (37℃, 5% CO2) for another 24 h. The cells were then fixed with 4% paraformaldehyde for 30 min. Immunofluorescence detection of the capsaicin receptor trpv1 was performed, and images were taken under a microscope to observe and calculate the trpv1 inhibition rate (%).
[0119] Table 2 Test results of test samples 1-17 and control samples 1-9
[0120] sample Stable duration (weeks) trpv1 inhibition rate (%) Test sample 1 ＞12 51.7 Test sample 2 ＞12 48.9 Test sample 3 ＞12 47.3 Test sample 4 ＞12 45.3 Test sample 5 ＞12 46.2 Test sample 6 ＞12 48.2 Test sample 7 ＞12 47.8 Test sample 8 ＞12 49.2 Test sample 9 ＞12 49.8 Test sample 10 ＞12 46.8 Test sample 11 ＞12 47.1 Test sample 12 ＞12 49.4 Test sample 13 ＞12 48.5 Test sample 14 ＞12 50.3 Test sample 15 ＞12 49.7 Test sample 16 ＞12 47.3 Test sample 17 ＞12 47.6 Control sample 1 9 35.1 Control sample 2 8 32.7 Control sample 3 1 26.3 Control sample 4 8 29.8 Control sample 5 7 31.2 Control sample 6 7 24.7 Control sample 7 9 30.7 Control sample 8 8 27.4 Control sample 9 9 28.5
[0121] Combining Examples 1, 8-9, and Comparative Examples 1-2 with Table 2, it can be seen that the plant compound extract obtained by using a formulation composed of *Prunus serrulata* leaves and *Centella asiatica*, and mixing the formulation with *Portulaca oleracea* at a weight ratio of 1:(3-5) for extraction, exhibits excellent storage stability and soothing efficacy. However, when the weight ratio exceeds this range, significant losses are observed in both stability duration and TRPV1 inhibition rate, highlighting the importance of the formulation ratio. Furthermore, combining Examples 10-11 and Table 2, it can be seen that when the weight ratio of *Prunus serrulata* leaves to *Centella asiatica* in the formulation is 1:1, the synergistic effect with *Portulaca oleracea* during the extraction process is optimal, resulting in a plant compound extract with superior storage stability and soothing efficacy. Combined with Comparison 3 and Table 2, it can be seen that if conventional methods are used to extract the mixture of Prunus serrulata leaves, Centella asiatica and Portulaca oleracea, the resulting plant compound extract has poor storage stability and soothing effects. This indicates that the combination of Prunus serrulata leaves, Centella asiatica and Portulaca oleracea requires a specific extraction method to obtain a plant compound extract with outstanding quality.
[0122] Combining Examples 1 and Comparative Examples 4-9 with Table 2, it can be seen that extracting *Prunus serrulata* leaves, *Centella asiatica*, and *Portulaca oleracea* individually resulted in extracts with lower stability duration and TRPV1 inhibition rate compared to the compound plant extract obtained from their combination. Furthermore, extracting the compound plant extract using the formulation alone, or by mixing any one of the formulations with *Portulaca oleracea*, showed no significant change in storage stability and soothing efficacy. Therefore, only when the formulation is combined with *Portulaca oleracea*, and all three are used as raw materials for extraction, can a high-quality compound plant extract be obtained.
[0123] Combining Examples 1 and 2-3 with Table 2, it can be seen that pulverizing the three raw materials—pine needle plum leaves, centella asiatica, and purslane—to 50-100 mesh before extraction can result in plant compound extracts exhibiting superior storage stability and soothing effects. Furthermore, combining Examples 4-5 with Table 2, it can be seen that when the particle size is lower or higher than the aforementioned specifications, the soothing effect of the plant compound extract is reduced. This may be due to differences in the release of soothing components from different raw materials caused by particle size variations. Therefore, pulverizing to 50-100 mesh is more conducive to obtaining plant compound extracts with excellent soothing effects.
[0124] As can be seen from Examples 1 and 6-7, and Table 2, the refined preparations disclosed in this application all exhibit excellent and stable effects during application, resulting in plant compound extracts with excellent storage stability and soothing efficacy. Furthermore, as can be seen from Examples 12-13 and 16-17, and Table 2, controlling the temperature at 70-80℃ during the purification process in step S3 ensures the full volatilization of the refined preparations using specific raw materials. During purification, the refined preparations effectively promote the better synergistic effect of the soothing components dissolved from pine needles, centella asiatica, and purslane. At temperatures below or above this level, the measured trpv1 inhibition rate is significantly reduced, indicating that a higher quality plant compound extract can be obtained at 70-80℃.
[0125] 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 plant compound extract with soothing effects, characterized in that, Made from raw materials comprising the following weight ratios: Formula: Purslane = 1: (3-5); The formula is composed of raw materials including pine needles and centella asiatica leaves; It is prepared and obtained through the following steps: S1. Prepare the ingredients containing pine needles, centella asiatica and purslane according to the specified ratio; S2. After crushing the raw material in step S1 to 50-100 mesh, add 15-20 times the weight of solvent for percolation extraction to obtain the extract. S3. Add the refining agent to the extract from step S2 for decolorization and refining at a temperature of 70-80℃. Stir for 1-1.5 hours during the refining process. After centrifugation and filtration, a plant compound extract with soothing effects can be obtained. The solvent is 1,3-butanediol with a concentration of 40-60%. The refined preparation comprises the following raw materials in parts by weight: 30-40 parts diatomaceous earth; 10-20 parts magnesium oxide; 5-15 parts of alumina; 10-20 parts coconut shell activated carbon; 15-25 parts zeolite powder; 1-10 parts chitosan powder.
2. The plant compound extract with soothing effects according to claim 1, characterized in that: The formula consists of pine needles and centella asiatica leaves in a weight ratio of 1:
1.
3. The plant compound extract with soothing effects according to claim 1, characterized in that: The refined preparation comprises the following raw materials in parts by weight: 35 parts of diatomaceous earth; 15 parts magnesium oxide; 10 parts aluminum oxide; 15 parts of coconut shell activated carbon; 20 parts zeolite powder; 5 parts chitosan powder.
4. The plant compound extract with soothing effects according to claim 1, characterized in that: Step S3 is specifically set as follows: add a refining agent to the extract from step S2 for decolorization and purification, centrifuge, filter through a 0.45μm filter membrane, then ultrafilter through a 10000D ultrafiltration membrane, and finally nanofilter through a 300D nanofiltration membrane to obtain a plant compound extract with soothing effects.
5. The plant compound extract with soothing effects according to claim 4, characterized in that: Step S3 is specifically set as follows: the extract from step S2 is added to a refining agent for decolorization and purification. After centrifugation, it is first filtered through a 0.45μm filter membrane; then ultrafiltered through a 10000D ultrafiltration membrane at a pressure controlled at 2-4 bar until 80% is achieved; finally, it is nanofiltered through a 300D nanofiltration membrane at a pressure controlled at 2-4 bar until 10% is achieved; thus, a plant compound extract with soothing effects can be obtained.
6. The use of the plant compound extract according to any one of claims 1-5 in the preparation of cosmetics with soothing effects.
Citation Information
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