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A kind of dendrobium extract and its application in the preparation of whitening sunscreen

A Dendrobium orchid extract technology, applied in the field of natural plant extraction and cosmetics, can solve the problems of not fully exploiting the output value of the orchid industry, restricting the healthy and sustainable development of the orchid industry, and achieving a strong tyrosinase inhibitory activity and its effect on UV absorption

Active Publication Date: 2020-09-18
HAINAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the development of tropical orchid industry in Hainan is relatively low, mainly focusing on planting and flower sales. However, some high-value-added orchid deep-processing products, such as orchid health care products and orchid cosmetics, have not yet been developed, and the output value of the orchid industry has not been fully explored. Restricting the healthy and sustainable development of the orchid industry

Method used

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  • A kind of dendrobium extract and its application in the preparation of whitening sunscreen
  • A kind of dendrobium extract and its application in the preparation of whitening sunscreen
  • A kind of dendrobium extract and its application in the preparation of whitening sunscreen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Dendrobium orchid is dried, pulverized to 20-40 order, obtains material 1.0kg;

[0026] (2) Add an ethanol solution (1.0g / mL, 500mL) of 1-butyl-3-methylimidazolium bromide to the material obtained in step (1), and after airtight infiltration for 1 hour, add a volume fraction of 60% Ethanol solution, heated to reflux temperature, reflux extraction for 2 hours, filtered, collected filtrate, concentrated to obtain crude extract;

[0027] (3) After diluting the crude extract obtained in step (2) with an appropriate amount of water, adding hydrochloric acid to adjust the pH to 2.0-5.0, extracting twice with ether, combining the organic phases, concentrating under reduced pressure, and drying to obtain the dendrobium extract Material 32g (hereinafter referred to as product A).

Embodiment 2

[0029] (1) Dendrobium orchid is dried, pulverized, obtains material 1.0kg;

[0030] (2) Add an ethanol solution (0.5g / mL, 600mL) of 1-butyl-3-methylimidazolium chloride salt to the material obtained in step (1), and after airtight infiltration for 2 hours, add a volume fraction of 70% Ethanol solution, heated to reflux temperature, reflux extraction for 3 hours, filtered, collected filtrate, concentrated to obtain crude extract;

[0031] (3) After the crude extract obtained in step (2) is diluted with an appropriate amount of water, after adding hydrochloric acid to adjust the pH to 2.0-5.0, extract 3 times with ether, combine the organic phases, concentrate under reduced pressure, and dry to obtain the Dendrobium orchid extract Material 33g (hereinafter referred to as product B).

Embodiment 3

[0033] (1) Dendrobium orchid is dried, pulverized to 20-40 order, obtains material 1.0kg;

[0034] (2) adding an ethanol solution with a volume fraction of 60% to the material obtained in step (1), heating to reflux temperature, reflux extraction for 2 hours, filtering, collecting the filtrate, and concentrating to obtain a crude extract;

[0035] (3) After diluting the crude extract obtained in step (2) with an appropriate amount of water, adding hydrochloric acid to adjust the pH to 2.0-5.0, extracting twice with ether, combining the organic phases, concentrating under reduced pressure, and drying to obtain the dendrobium extract Thing 22g (hereinafter referred to as product C).

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Abstract

The invention relates to a dendrobium extract and application thereof in preparation of a skin-whitening and sun-screening agent. A preparation method of the dendrobium extract comprises the followingsteps: (1) drying and crushing dendrobium to obtain a material; (2) adding a right amount of ionic liquid solution into the material obtained in the step (1), soaking for 1-2h under the airtight condition, then adding an ethanol solution with volume fraction of 60-70%, heating up to reflux temperature, carrying out reflux extraction for 2-3h, filtering, collecting filtrate, and concentrating to obtain a crude extract; (3) diluting the crude extract, obtained in the step (2), with a right amount of water, adding hydrochloric acid to adjust the pH value to 2.0-5.0, then extracting for 2-3 timeswith ethyl ether, combining organic phases, carrying out vacuum concentration, and drying to obtain the dendrobium extract.

Description

technical field [0001] The invention belongs to the field of natural plant extraction and cosmetics, and in particular relates to a dendrobium orchid extract and its application in preparing a whitening sunscreen. Background technique [0002] Dendrobium nobile is a herbaceous plant of the genus Dendrobium in the family Orchidaceae. It is one of the earliest plants recorded in Chinese literature. The whole plant can be used as medicine. Dendrobium in my country is mainly produced in the southeast and southwest regions. It grows in the characteristic tree trunks or stone crevices between 500m and 2000m above sea level. The chemical composition of various medicinal Dendrobium contains various chemical compositions with different pharmacological effects, mainly including Dendrobium polysaccharides, alkaloids, amino acids, etc., and pharmacological effects such as anti-oxidation, anti-aging, antipyretic and pain relief. [0003] At present, the development of tropical orchid i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K8/9794A61Q17/04A61Q19/02
CPCA61K8/97A61K2800/782A61K2800/805A61Q17/04A61Q19/02
Inventor 纪明慧郭飞燕陈光英刘鸿聪何有业
Owner HAINAN NORMAL UNIV