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Plant extract for external use, cosmetics and preparation method thereof capable of alleviating dry, cracked and itchy skin of the elderly
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A technology for plant extracts and dry and cracked skin, which is applied to the field of external plant extracts and their preparation, can solve the problems of limited mass production, low extraction efficiency, poor stability of plant raw material extracts, etc., and achieves the composition of plant extracts Stability, increased extraction efficiency and better product quality
Active Publication Date: 2021-07-20
BEIJING DONGFANG MIAOSEN BIOTECH CO LTD
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Problems solved by technology
At present, the main reasons for the difficulties in the application of plant extracts in the field of cosmetics are (1) The extraction efficiency is too low. Due to the characteristics of plant raw materials, the extraction effect is too low and the extraction cost is increased. Therefore, many companies prefer low-cost synthetic chemical raw materials. Replace natural plant raw materials to increase economic benefits
However, complex equipment, high input costs, and high extraction costs limit industrial mass production
And the extract obtained by supercritical extraction generally has poor compatibility with oil, which affects its application in oil-based cosmetics
[0015] There are many defects in the above existing methods, limited by the extraction efficiency, the preparation cost is too high, and the problems of environmental pollution caused by the discharge of organic solvents are becoming more and more prominent.
Method used
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Embodiment 1
[0069] (1) Take each raw material according to the following proportioning by weight, and mix them evenly; Arctium 1g, Wild Chrysanthemum 3g, Kochia chinensis 6g, Schisandra 10g, mung bean 9g;
[0070] (2) The first extraction: add ethanol according to the ratio of solid to liquid at 1:10m / m, mix, and extract at 60°C for 1 hour;
[0071] (3) The second extraction: add sunflower seed oil according to the solid-liquid ratio of 1:10m / m, and stir and extract at 60°C for 1 hour;
[0072] (4) Concentrate under reduced pressure at 40°C until ethanol is completely removed;
[0073] (5) The pore size of the filter plate is 10 μm, and finely filtered until the filtrate is clear.
Embodiment 2
[0075] (1) Take each raw material according to the following proportions by weight and mix them evenly;
[0077] (2) The first extraction: add ethanol according to the ratio of solid to liquid at 1:30m / m, mix, and extract at 40°C for 2 hours;
[0078] (3) The second extraction: add hydrogenated polyisobutene (20cSt) according to the solid-liquid ratio of 1:30m / m, and stir and extract at 40°C for 2h;
[0079] (4) Concentrate under reduced pressure at 50°C until ethanol is completely removed;
[0080] (5) The pore size of the filter plate is 1 μm, and finely filtered until the filtrate is clear.
Embodiment 3
[0082] (1) Take each raw material according to the following proportions by weight and mix them evenly;
[0086] (4) Concentrate under reduced pressure at 80°C until ethanol is completely removed;
[0087] (5) The pore size of the filter plate is 0.2 μm, and finely filtered until the filtrate is clear.
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Abstract
The invention discloses a plant extract for external use which has the effect of alleviating dry, cracked and itchy skin of the elderly. The plant extract for external use is prepared from the raw materials in the following proportions by weight: (1) Weigh and mix the raw materials according to the proportions in parts by weight; 10. Kochia chinensis 1-10, Schisandra chinensis 1-10, mung bean 1-10; (2) The first extraction: mix raw materials and solvent 1 according to the ratio of solid to liquid at 1:10-100m / m, at 40-90°C Lower extraction for 0.5-2 hours; (3) second extraction: add solvent two according to the ratio of solid to liquid at 1:10-100m / m, extract at 40-90°C for 0.5-2 hours; (4) remove solvent one; (5 ) fine filtration to clarification, to obtain the extract; solvent one is a mixture of one or more of ethanol, chloroform and acetone; solvent two is white oil, hydrogenated polyisobutylene, hydrogenated polydecene, caprylic acid / capric triglyceride A mixture of one or more of esters, isostearyl isostearate and vegetable oil.
Description
technical field [0001] The invention relates to a plant extract for external use and a preparation method thereof, in particular to a plant extract for external use with the effect of relieving dry, cracked and itchy skin of the elderly and cosmetics prepared from the plant extract. Background technique [0002] Due to the atrophy of the sebaceous glands, the decrease of sebum secretion, the increase of the pH of the skin surface and the damage of the skin barrier in the elderly skin, the symptoms of dryness, itching, cracking and other symptoms of the elderly skin occur. Traditional Chinese medicine believes that dry and itchy skin in the elderly belongs to blood deficiency and wind dryness, and the medicine should nourish blood and moisten dryness, dispel wind and relieve itching. At present, the existing commercially available related products are mainly moisturizing, which cannot fundamentally relieve and treat itching in the elderly skin. How to obtain a natural and no...
Claims
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Application Information
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