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Willow bark extract and preparation method thereof

A technology of willow bark extract and willow bark, which is applied in the preparation of sugar derivatives, chemical instruments and methods, sugar derivatives, etc., can solve the problems of unsatisfactory industrial production, low purity of salicin products, and long production process cycle , to achieve the effects of short production process cycle, less pollution, and avoiding the use of organic solvents

Inactive Publication Date: 2018-05-29
四川紫灵生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production process cycle of these extraction and separation methods is long, the pollution is relatively large, and the purity of the obtained salicin product is low, which cannot meet the needs of industrial production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A preparation method of willow bark extract, said method comprising the following steps:

[0026] (1) Take a certain amount of white willow bark and grind it, add quicklime water, control the temperature to 50°C, stir the mixture for 10 minutes, then let it stand for 180 minutes, perform ultrasonic treatment for 10 minutes every 20 minutes, and filter;

[0027] (2) the filtrate of step (1) is adsorbed by a single resin column or a plurality of resin columns connected in series;

[0028] (3) Rinse the resin column after adsorption and saturation in step (2) with water, then elute the resin column with ethanol, collect the desorption solution, concentrate the desorption solution under reduced pressure to recover ethanol, and obtain salicin after microwave vacuum drying;

[0029] (4) mixing the dried salicin in step (3) with weakly alkaline water with a pH value of 7 to obtain the product.

[0030] In step (1), the pH value of the quicklime water is 9, the mass ratio of w...

Embodiment 2

[0034] A preparation method of willow bark extract, said method comprising the following steps:

[0035] (1) Take a certain amount of white willow bark and grind it, add quicklime water, control the temperature to 60°C, stir the mixture for 20 minutes, then let it stand for 240 minutes, perform ultrasonic treatment for 10 minutes every 20 minutes, and filter;

[0036] (2) the filtrate of step (1) is adsorbed by a single resin column or a plurality of resin columns connected in series;

[0037] (3) Rinse the resin column after adsorption and saturation in step (2) with water, then elute the resin column with ethanol, collect the desorption solution, concentrate the desorption solution under reduced pressure to recover ethanol, and obtain salicin after microwave vacuum drying;

[0038] (4) mixing the dried salicin in step (3) with weakly alkaline water with a pH value of 8 to obtain the product.

[0039] In step (1), the pH value of the quicklime water is 10, the mass ratio of ...

Embodiment 3

[0043] A preparation method of willow bark extract, said method comprising the following steps:

[0044] (1) Take a certain amount of white willow bark and grind it, add quicklime water, control the temperature to 55°C, stir the mixture for 15 minutes, then let it stand for 210 minutes, perform ultrasonic treatment for 10 minutes every 20 minutes, and filter;

[0045] (2) the filtrate of step (1) is adsorbed by a single resin column or a plurality of resin columns connected in series;

[0046] (3) Rinse the resin column after adsorption and saturation in step (2) with water, then elute the resin column with ethanol, collect the desorption solution, concentrate the desorption solution under reduced pressure to recover ethanol, and obtain salicin after microwave vacuum drying;

[0047] (4) mixing the dried salicin in step (3) with weakly alkaline water with a pH value of 7.5 to obtain the product.

[0048] In step (1), the pH value of the quicklime water is 9.5, the mass ratio ...

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Abstract

The invention relates to the technical field of separation of natural products, and discloses willow bark extract and a preparation method thereof. The preparation method comprises the following steps: (1) crushing a given amount of white willow bark, adding quick lime water, controlling the temperature at 50 to 60 DEG C, stirring a mixture for 10 to 20 min, standing for 180 to 240 minutes, ultrasonically processing for 10 minutes every 20 minutes, and filtering; (2) adsorbing filtrate by virtue of a single resin column or a plurality of resin column connected in series; (3) flushing the saturated resin column by using water, then eluting the resin column by using ethanol, collecting a desorption solution, depressing concentrating the desorption solution to recovery the ethanol, and vacuumdrying by using microwaves to obtain willow bark extract; and (4) mixing salicin and weak alkaline water with a pH value being 7 to 8, thus obtaining a product. The salicin product is obtained by virtue of a process for crushing, stirring, standing, adsorbing, separating and drying white willow barks, the production period is short, the pollution is slighter, and the industrialized production ofhigh-purity salicin products can be facilitated.

Description

technical field [0001] The invention relates to the technical field of natural product separation, in particular to a willow bark extract and a preparation method thereof. Background technique [0002] White willow bark is the bark of the willow bark of the Salicaceae plant. It has a long history of use and is mainly used for anti-inflammatory, analgesic and fever-reducing. Experiments have shown that the combination of the extract of white willow bark and the extracts of citrus citrus citrus, ephedra, and ginger root has the function of losing weight and strengthening the body. At present, dietary supplements and diet foods with white willow bark extract as the main ingredient can be seen in the health food market in the United States and Europe. White willow bark extract can be used to produce preservatives in food because of its rich phenols and flavonoids. White willow bark extract can also be used to treat headaches, low back pain, and arthritis. [0003] Salicin, co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H15/203C07H1/08
CPCC07H1/08C07H15/203
Inventor 李建
Owner 四川紫灵生物科技有限公司
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