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Application medicago sativa extract in product with blue light protection effect and preparation of medicago sativa extract

An alfalfa and extract technology, which is applied to medical preparations containing active ingredients, skin care preparations, cosmetic preparations, etc., can solve the problems of no blue light-blocking components in alfalfa extracts, and achieve improved purity. and stability, strong antioxidant activity

Active Publication Date: 2020-08-07
上海珈凯生物股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing anti-blue light product patents, there is no record about using alfalfa extract as the anti-blue light component

Method used

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  • Application medicago sativa extract in product with blue light protection effect and preparation of medicago sativa extract
  • Application medicago sativa extract in product with blue light protection effect and preparation of medicago sativa extract
  • Application medicago sativa extract in product with blue light protection effect and preparation of medicago sativa extract

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] An alfalfa extract with blue light protection effect obtained by the following preparation method:

[0047] (1) Take 200g of dried medicinal material of alfalfa, cut it into 3-5 cm long sections, use deionized water 10 times the weight of alfalfa, and extract twice at 70°C for 1.5 hours each time to obtain about 3.2L of extract ( 3.4kg).

[0048] (2) Adjust the pH of the above extract to 4.6 with 20% citric acid aqueous solution, place it in a water bath at 95°C for 1 hour, let it cool and filter, and collect 3.1L (3.2kg) of the filtrate;

[0049] (3) At room temperature, add 30 g of type IIB clarifying agent to the filtrate of step (2), stir evenly, add 30 g of type IIA clarifying agent, stir evenly, and let stand for 4 hours. Then add 3.5 g of activated carbon, stir at 40° C. for 30 minutes, filter, and collect 3.1 kg of filtrate. Then add 120 g of D101 macroporous adsorption resin to the filtrate, stir and adsorb for 1 hour at room temperature, filter with a 0.22 μ...

Embodiment 2

[0052] An alfalfa extract with blue light protection effect obtained by the following preparation method:

[0053] (1) Take 300 g of dried medicinal material of alfalfa, cut into 3-5 cm long pieces, extract with deionized water 10 times the weight of alfalfa at 80°C for 2 times, each time for 1 hour, and obtain about 4.4 L of extract.

[0054] (2) Adjust the pH of the above extract to 4.5 with 20% citric acid aqueous solution, heat at 100°C for 45 minutes, let cool and filter, and collect 4.1L (4.3kg) of the filtrate;

[0055] (3) At room temperature, add 50 g of type IIB clarifying agent to the filtrate of step (2), stir evenly, add 50 g of type IIA clarifying agent, stir evenly, and let stand for 5 hours. Then add 15 g of diatomaceous earth, stir at 50° C. for 15 minutes, filter, and collect about 4.2 kg of filtrate. Then, 150 g of polyamide was added to the filtrate, stirred and adsorbed for 1 hour at room temperature, filtered with a 0.22 μm filter membrane, and about 4 L...

Embodiment 3

[0058] An alfalfa extract with blue light protection effect obtained by the following preparation method:

[0059] (1) Take 300g of dried medicinal material of alfalfa, cut it into 3-5 cm long pieces, extract with deionized water 5 times the weight of alfalfa at 50°C for 3 times, each time for 2 hours, and obtain about 3.8L of extract.

[0060] (2) Adjust the pH of the above extract to 5 with 20% citric acid aqueous solution, heat it in water at 90°C for 3 hours, let it cool and filter, and collect about 3.5L (3.6kg) of the filtrate;

[0061] (3) At room temperature, add 18 g of type IIB clarifying agent to the filtrate of step (2), stir evenly, add 18 g of type IIA clarifying agent, stir evenly, and let stand for 2 hours. Add 3.6 g of diatomaceous earth, stir at 60° C. for 10 minutes, filter, and collect 3.4 kg of filtrate. Then, 68 g of polyamide was added to the filtrate, stirred and adsorbed for 2 hours at room temperature, filtered with a 0.22 μm filter membrane, and 3.2...

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Abstract

The invention discloses application of a medicago sativa extract in a product with a blue light protection effect and preparation of the medicago sativa extract. The medicago sativa extract is found to have a blue light protection effect for the first time, so that cosmetics with the blue light protection effect can be obtained by applying the medicago sativa extract to the cosmetics; and the addition weight ratio is 0.5-5%. The preparation method of the medicago sativa extract comprises the following steps: performing thermal extraction with water or an alcohol solvent; adjusting the pH valueof an extracting solution to 4-5; and performing heat treatment to obtain the medicago sativa extract. The ultraviolet-visible light spectrum of the medicago sativa extract provided by the inventionhas an absorption peak in a range of 400-500nm (blue light waveband), so that the medicago sativa extract has an excellent blue light absorption effect. The medicago sativa extract provided by the invention also has very strong antioxidant activity, has a very good repairing effect on existing skin injuries caused by blue light, and has the broad application prospects when being applied to anti-blue-light skin care products.

Description

technical field [0001] The present invention relates to the technical field of Chinese herbal medicine extraction, in particular to the application and preparation of an alfalfa extract in a product with blue light protection effect, and in particular to an alfalfa extract with blue light protection effect combined with heat treatment and clarification treatment The preparation method and the application of the obtained alfalfa extract in cosmetics with blue light protection effect. Background technique [0002] Alfalfa (Medicago sativa L, also known as Alfalfa), is a plant of the genus Alfalfa of the Fabaceae Papilionaceae. It originates in Iran and is now widely distributed all over the world. It is the main forage grass that is popularized and applied in our country. Alfalfa has the characteristics of high grass yield, long utilization period, strong regeneration, strong adaptability and rich nutrition, so it is known as the "king of grass". [0003] Medicinal value of ...

Claims

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Application Information

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IPC IPC(8): A61K8/9789A61Q17/04A61Q19/08A61Q19/00
CPCA61K2800/805A61Q17/04A61Q19/00A61Q19/08A61K8/9789
Inventor 刘青周秋娜黄芳王新亮周利丹齐秋月马毅刚卢伊娜
Owner 上海珈凯生物股份有限公司
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