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Comfrey extract for cosmetics and preparation method thereof

A technology of comfrey extract and cosmetics, which is applied in the field of preparation of comfrey extract for cosmetics, can solve the problems of poor stability of plant raw material extracts, increased extraction costs, and high production costs, and achieve better product quality and extraction The effect of condition parameter optimization and extraction efficiency increase

Active Publication Date: 2021-05-07
BEIJING ACAD OF TCM BEAUTY SUPPLEMENTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The application value of comfrey extract in the field of cosmetics has gradually attracted the attention of those skilled in the art, but at present the application of comfrey extract in the field of cosmetics is limited. The reasons for the analysis are as follows: (1) the extraction efficiency is too low, due to the The low extraction effect will increase the extraction cost, so many companies prefer to choose low-cost synthetic chemical raw materials instead of natural plant raw materials to increase economic benefits
(2) Poor stability of plant raw material extracts
At the same time, due to the limitation of extraction efficiency, problems such as high preparation cost and environmental pollution caused by organic solvent emissions are becoming increasingly prominent.

Method used

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  • Comfrey extract for cosmetics and preparation method thereof
  • Comfrey extract for cosmetics and preparation method thereof
  • Comfrey extract for cosmetics and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] (1) The first extraction: 20g of comfrey raw material; add absolute ethanol to the comfrey raw material according to the ratio of material to liquid of 1:10m / m, mix, and extract at 60°C for 1.5h;

[0058] (2) Second extraction: add sunflower seed oil according to the solid-liquid ratio of 1:10m / m, stir and extract at 60°C for 1.5h;

[0059] (3) Concentrate under reduced pressure at 40°C until ethanol is completely removed;

[0060] (4) The pore size of the filter plate is 0.2 μm, and finely filtered until the filtrate is clear.

Embodiment 2

[0062] (1) First extraction: 20g of comfrey raw material; add anhydrous petroleum ether according to the ratio of solid to liquid at 1:50m / m, mix, and extract at 90°C for 0.5h;

[0063] (2) The second extraction: Add white oil (7cSt) according to the ratio of solid to liquid at 1:50m / m, and stir and extract at 90°C for 0.5h;

[0064] (3) Concentrate under reduced pressure at 60°C until petroleum ether is completely removed;

[0065] (4) The pore size of the filter plate is 2 μm, and finely filtered until the filtrate is clear.

Embodiment 3

[0067] (1) First extraction: 20g of comfrey raw material; add anhydrous acetone according to the material-liquid ratio of 1:100m / m, mix, and extract at 40°C for 2h;

[0068] (2) Second extraction: add caprylic acid / capric acid triglyceride according to the solid-liquid ratio of 1:100m / m, stir and extract at 40°C for 2 hours;

[0069] (3) Concentrate under reduced pressure at 80°C until anhydrous acetone is completely removed;

[0070] (4) The pore size of the filter plate is 10 μm, and finely filtered until the filtrate is clear.

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Abstract

The invention discloses a preparation method of comfrey extract for cosmetics. The specific steps are: (1) first extraction: mix comfrey raw materials and solvent 1 according to the ratio of material to liquid at 1:10:1:100m / m, Extract at 40-90°C for 0.5-2h; (2) Second extraction: add solvent 2 according to the solid-liquid ratio of 1:10-1:100m / m, extract at 40-90°C for 0.5-2h; (3 ) to remove solvent one; (4) fine filtration to clarification to obtain the extract; wherein solvent one is a mixture of one or more of ethanol, petroleum ether and acetone; solvent two is white oil, hydrogenated polyisobutylene, hydrogenated polyisobutylene A blend of one or more of Decene, Caprylic / Capric Triglyceride, Isostearyl Isostearate, and Vegetable Oil. The method for effectively extracting comfrey raw materials with different polarity dual solvents provided by the present invention can greatly improve the product quality of the extract and make it have excellent stability as a cosmetic additive.

Description

technical field [0001] The invention relates to a method for preparing a comfrey extract used in cosmetics, in particular to a method for preparing a comfrey extract that can be added to cosmetics and maintain long-term stability, and the extract obtained by the method. Background technique [0002] Lithospermum erythrorhizon (scientific name: Lithospermum erythrorhizon) is a perennial herb of the family Boraginaceae. Comfrey is a commonly used Chinese medicinal material in my country. It is cold in nature and has a heart and liver meridian. It has the effects of clearing away heat and cooling blood, promoting blood circulation and detoxification, penetrating rash and eliminating spots. Comfrey contains a large amount of shikonin, which has anti-inflammatory, immune regulation, bactericidal and antiviral effects. [0003] The application value of comfrey extract in the field of cosmetics has gradually attracted the attention of those skilled in the art, but at present the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K8/9789A61Q19/08A61Q19/00
CPCA61K2800/805A61Q19/00A61Q19/08A61K8/9789
Inventor 董银卯琚瑶曲召辉
Owner BEIJING ACAD OF TCM BEAUTY SUPPLEMENTS
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