Myrica leaf extract, preparation method and application in cosmetics thereof

A technology for extracts and cosmetics, applied in the field of bayberry leaf extract and its preparation method and application in cosmetics, can solve the problems of unclear main components and specific functions of bayberry leaves, achieve improved comprehensive utilization rate, and simple extraction process , the effect of low production cost

Inactive Publication Date: 2019-03-01
HUANAN IND TECH RES INST OF ZHEJIANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Patent CN105919875A discloses a traditional Chinese medicine composition containing red bayberry leaves for whitening cosmetics. It is compounded with red bayberry leaves and other Chinese medicinal materials to achieve a whitening effect, but the main components and specific effects of red bayberry leaves are not the same. don't know

Method used

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  • Myrica leaf extract, preparation method and application in cosmetics thereof
  • Myrica leaf extract, preparation method and application in cosmetics thereof
  • Myrica leaf extract, preparation method and application in cosmetics thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: the preparation of bayberry leaf extract

[0034] Take fresh red bayberry leaves, pick out rotten ones, wash them with deionized water, dry them in an oven at 45°C, and then crush them through a No. 3 sieve to obtain dry red bayberry leaves powder. Weigh 55g of dry powder of red bayberry leaves, place it in a 2000mL round bottom flask, add 1.5L of 40% ethanol solution, heat and reflux for extraction at 65°C for 75min, cool to room temperature, filter, collect the filtrate, and obtain red bayberry leaf extract liquid, the flavonoid content in the obtained bayberry leaf extract is 1.64mg / mL, and the polysaccharide content is 4.64mg / mL.

[0035] Concentrate the bayberry leaf extract in vacuum at 45°C until it has no alcohol smell, then dissolve and dilute it with deionized water to a flavonoid content of 14.21mg / mL, filter, and apply AB-8 macroporous adsorption resin at a flow rate of 2mL / min. When the effluent has a color, it indicates that the adsorption o...

Embodiment 2

[0036] Embodiment 2: the preparation of bayberry leaf extract

[0037] Take fresh red bayberry leaves, pick out rotten ones, wash them with deionized water, dry them in an oven at 45°C, and then crush them through a No. 3 sieve to obtain dry red bayberry leaves powder. Weigh 30g of dried red bayberry leaf powder, place it in a 2000mL round-bottomed flask, add 1.5L of 80% ethanol solution, heat and reflux for extraction at 80°C for 30min, cool to room temperature, filter, collect the filtrate, and obtain red bayberry leaf extract solution, the flavonoid content in the obtained bayberry leaf extract is 3.05mg / mL, and the polysaccharide content is 3.84mg / mL.

[0038]Concentrate the bayberry leaf extract in vacuum at 45°C until it has no alcohol smell, then dissolve and dilute it with deionized water to a flavonoid content of 15.35mg / mL, filter, and apply AB-8 macroporous adsorption resin at a flow rate of 2mL / min. When the effluent has a color, it indicates that the adsorption o...

Embodiment 3

[0039] Embodiment 3: the preparation of bayberry leaf extract

[0040] Take fresh red bayberry leaves, pick out rotten ones, wash them with deionized water, dry them in an oven at 45°C, and then crush them through a No. 3 sieve to obtain dry red bayberry leaves powder. Weigh 55g of dried bayberry leaf powder, put it in a 1000mL round-bottomed flask, add 550mL of 60% ethanol solution, heat and extract at 40°C for 120min, cool to room temperature, filter, collect the filtrate, and repeat the extraction of the filter residue 3 times , combined four filtrates to obtain a bayberry leaf extract, the flavonoid content in the gained bayberry leaf extract was 1.52 mg / mL, and the polysaccharide content was 4.84 mg / mL.

[0041] Concentrate the bayberry leaf extract in vacuum at 45°C until there is no alcohol smell, then dissolve and dilute it with deionized water to a flavonoid content of 13.05mg / mL, filter, and apply AB-8 macroporous adsorption resin at a flow rate of 2mL / min. When the...

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Abstract

The invention discloses a myrica leaf extract, a preparation method and an application in cosmetics thereof. An ethanol heating extraction method is adopted to obtain the myrica leaf extract from bayberry leaves. The preparation method of the myrica leaf extract comprises the steps that the leaves of myrica trees are taken, rotting and metamorphic leaves are removed, cleaning, drying and crushingare carried out, the myrica leaves are mixed with a certain concentration of ethanol solution, and the mixture is heated to a certain temperature, and after continuous extraction for a certain time, extract liquid is obtained; myrica leaf crude extract is obtained by extracting the extract liquid and pressure reducing and recovering the solvent; and the myrica leaf crude extract is purified by macroporous resin and then pressure reducing and recovering and drying. The myrica leaf extract has a good inhibitory effect on tyrosinase, can be used as a plant additive in the development of whiteningand anti-aging cosmetics, the extraction process is simple, the production costs are low, and the industrial production is facilitated; the utilization rate of the myrica leaves is improved, the waste of the marica leaves is turned into treasures, the kinds of cosmetic products are expanded, and the demands for natural cosmetics of people are met.

Description

technical field [0001] The invention belongs to the fields of plant application and cosmetics, in particular to a bayberry leaf extract, a preparation method thereof and an application in cosmetics. Background technique [0002] With the increasing pressure of life and the intensification of environmental pollution, people's skin is under more and more pressure. Dull skin, pigmentation, and early aging have become a kind of trouble faced by many women. Therefore, it has whitening, Cosmetics with effects such as anti-aging are more and more sought after by people. At present, most of the whitening and anti-aging raw materials on the market are chemically synthesized, such as mercury salt with whitening effect and hydroquinone with anti-freckle effect. Although these compounds can quickly achieve whitening effect, they have toxic side effects on the skin, and long-term use will damage the skin. Adverse effects such as causing contact dermatitis or causing permanent depigmenta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/9789A61Q19/02A61Q19/08
CPCA61K2800/782A61K2800/805A61Q19/02A61Q19/08A61K8/9789
Inventor 钟晓明汤丹陈敏
Owner HUANAN IND TECH RES INST OF ZHEJIANG UNIV
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