Preparation method of hamamelis virginiana extract and application thereof in acne removing cosmetics

A witch hazel extract and the technology of the extract are applied in the application of acne-removing cosmetics, the preparation field of the North American witch hazel extract, can solve the problems of no disclosure, inability to be absorbed and utilized by the skin, unclear pertinence and the like, and achieve The effect of removing acne

Active Publication Date: 2018-11-30
广州帆航贸易有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The crude extract has complex components and low purity, and cannot be better absorbed and utilized by the skin
The application number is: 201410782024.7, and the patent name is "A Deep Penetration and Absorption Skin Care Composition" which discloses a composition containing North American witch hazel extract. Adding these components to skin care products can effectively and quickly improve the skin , lifting and firming the skin, but the patent document does not disclose which components of North American witch hazel are specifically extracted, so the specificity is not clear

Method used

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  • Preparation method of hamamelis virginiana extract and application thereof in acne removing cosmetics
  • Preparation method of hamamelis virginiana extract and application thereof in acne removing cosmetics
  • Preparation method of hamamelis virginiana extract and application thereof in acne removing cosmetics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The preparation method of North American witch hazel extract comprises the following steps:

[0025] (1) Take witch hazel, crush it, add it to water, add boric acid to extract at 60°C for 2 hours, filter, take the supernatant, add citric acid to adjust the pH to 3.5, extract at room temperature for 24 hours, then add hydrochloric acid to adjust the pH to 3.5, Heating to 75°C, keeping warm for 35min, filtering to obtain a precipitate, adding an ethanol solution with a volume fraction of 65% to the precipitate, extracting at 75°C for 1.8h, filtering to obtain a filter residue and a supernatant, and taking the supernatant, concentrated and dried to obtain the first extract;

[0026] (2) Take the filter residue obtained in step (1), add an ethanol solution with a volume fraction of 78%, ultrasonically extract for 60 min, filter, take the supernatant, concentrate, and dry to obtain the second extract;

[0027] (3) Mixing the first extract obtained in step (1) and the second...

Embodiment 2

[0029] The preparation method of North American witch hazel extract comprises the following steps:

[0030] (1) Take witch hazel, crush it, add it to water, add boric acid to extract at 70°C for 1 hour, filter, take the supernatant, add citric acid to adjust the pH to 3.8, extract at room temperature for 20 hours, then add hydrochloric acid to adjust the pH to 3.8, Heat to 85°C, keep warm for 30min, filter to obtain a precipitate, add ethanol solution with a volume fraction of 70% to the precipitate, extract at 70°C for 1.5h, filter to obtain a filter residue and supernatant, take the supernatant, concentrated and dried to obtain the first extract;

[0031] (2) Take the filter residue obtained in step (1), add an ethanol solution with a volume fraction of 85%, ultrasonically extract for 45 minutes, filter, take the supernatant, concentrate, and dry to obtain the second extract;

[0032] (3) Mixing the first extract obtained in step (1) and the second extract obtained in step ...

Embodiment 3

[0034] The preparation method of North American witch hazel extract comprises the following steps:

[0035] (1) Weigh the North American witch hazel, crush it, add 5 times the weight of water, add boric acid and extract at 65°C for 1.5h, filter, take the supernatant, add citric acid to adjust the pH to 3.6, extract at room temperature for 24h, then add Adjust the pH to 3.6 with hydrochloric acid, heat to 80°C, keep warm for 30min, filter to obtain a precipitate, add 12 parts by weight of an ethanol solution with a volume fraction of 68% to the precipitate, extract at 72°C for 1.5h, filter to obtain filter residue and supernatant, take the supernatant, concentrate and dry to obtain the first extract;

[0036] (2) Get the filter residue obtained in step (1), add 1.5 times by weight of ethanol solution with a volume fraction of 85%, ultrasonically extract for 45min, the power of ultrasonic is 300W, filter, take the supernatant, concentrate, dry, and obtain second extract;

[00...

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PUM

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Abstract

The invention provides a preparation method of a hamamelis virginiana extract. The method employs a two-step method to extract quercetin and astragalin in hamamelis virginiana respectively. In the first step, water-acid coarse extraction is carried out, then 65-70% ethanol is utilized for fine extraction at 70-75DEG C so as to obtain quercetin finally, and the quercetin extraction rate reaches 0.75%; the second step adopts ultrasonic alcohol extraction to extract astragalin, under an ultrasonic condition, astragalin in hamamelis virginiana can be dissolved in a high concentration alcohol solution. The method provided by the invention has clear extraction target, can effectively extract quercetin and astragalin in hamamelis virginiana, has high extraction rate, and the obtained extract canbe applied to acne removing cosmetics, can be absorbed by skin, and synergistically reach the efficacy of efficient bacteriostasis, inflammation resistance and acne removal.

Description

technical field [0001] The invention belongs to the field of cosmetics, and in particular relates to a preparation method of a North American witch hazel extract and its application in acne-removing cosmetics. Background technique [0002] With the continuous advancement of society and technology, people's pursuit of quality of life has improved, and their awareness of skin care and health care has also continued to increase. Chinese herbal plant extracts are widely used in cosmetics due to their high safety performance and good efficacy. Witch hazel, originally discovered in North America, is a flower with ornamental value, and North American witch hazel contains a variety of tannins and volatile oils. North American witch hazel contains tannins, they can regulate sebum secretion, have moisturizing and whitening effects; they can promote lymphatic blood circulation, and have the effect of relieving and treating eye pain and dark circles in the morning; Cracks, sunburn, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/9789A61Q19/00A61P17/10
CPCA61Q19/00A61K8/9789A61P17/10
Inventor 余成科
Owner 广州帆航贸易有限公司
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